├── .envrc
├── .github
    ├── FUNDING.yml
    └── workflows
    │   └── vhs.yaml
├── .gitignore
├── Cargo.lock
├── Cargo.toml
├── LICENSE
├── README.md
├── flake.lock
├── flake.nix
├── meta
    └── vhs.gif
├── src
    ├── app.rs
    ├── config
    │   ├── moccasin.toml
    │   ├── mod.rs
    │   └── theme.rs
    ├── event.rs
    ├── feed
    │   ├── html.rs
    │   └── mod.rs
    ├── handler.rs
    ├── lib.rs
    ├── main.rs
    ├── repo
    │   ├── mod.rs
    │   ├── repo.rs
    │   └── storage
    │   │   ├── mod.rs
    │   │   ├── schema.sql
    │   │   └── sqlite.rs
    ├── tui.rs
    ├── ui
    │   ├── browse.rs
    │   ├── detail.rs
    │   ├── mod.rs
    │   └── themed.rs
    └── util.rs
└── vhs.tape


/.envrc:
--------------------------------------------------------------------------------
1 | use flake
2 | 


--------------------------------------------------------------------------------
/.github/FUNDING.yml:
--------------------------------------------------------------------------------
1 | github: [rektdeckard]
2 | 


--------------------------------------------------------------------------------
/.github/workflows/vhs.yaml:
--------------------------------------------------------------------------------
 1 | name: VHS
 2 | on: [pull_request]
 3 | jobs:
 4 |   vhs:
 5 |     runs-on: ubuntu-latest
 6 |     steps:
 7 |       - uses: actions/checkout@v4
 8 |       - name: Install moccasin
 9 |         run: cargo install --path .
10 |       - uses: charmbracelet/vhs-action@v2
11 |         with:
12 |           path: "vhs.tape"
13 |       - uses: stefanzweifel/git-auto-commit-action@v5
14 |         env:
15 |           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
16 |         with:
17 |           commit_message: "chore(ci): generate gif"
18 |           commit_user_name: vhs-action 📼
19 |           commit_user_email: actions@github.com
20 |           commit_author: vhs-action 📼 <actions@github.com>
21 |           file_pattern: "*.gif"
22 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | /target
2 | .direnv
3 | 


--------------------------------------------------------------------------------
/Cargo.lock:
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "moccasin"
 3 | version = "0.1.3"
 4 | edition = "2021"
 5 | authors = ["Tobias Fried <friedtm@gmail.com>"]
 6 | license = "MIT"
 7 | description = "A TUI feed reader for RSS, Atom, and (aspirationally) Podcasts"
 8 | readme = "README.md"
 9 | homepage = "https://github.com/rektdeckard/moccasin"
10 | repository = "https://github.com/rektdeckard/moccasin"
11 | keywords = ["rss", "atom", "feed-reader", "tui"]
12 | categories = ["command-line-utilities"]
13 | 
14 | [[bin]]
15 | name = "mcsn"
16 | path = "src/main.rs"
17 | 
18 | [dependencies]
19 | anyhow = "1"
20 | chrono = "0.4"
21 | clap = { version = "4.4", features = ["derive"] }
22 | colorsys = "0.6"
23 | crossterm = "0.27"
24 | directories = "5"
25 | futures = "0.3"
26 | html-escape = "0.2"
27 | html_parser = "0.7.0"
28 | log = "0.4.20"
29 | polodb_core = "4.4.0"
30 | reqwest = { version = "0.11", features = ["blocking"] }
31 | rss = { version = "2", features = ["atom"] }
32 | rusqlite = { version = "0.29.0", features = ["bundled", "serde_json"] }
33 | serde = { version = "1", features = ["derive"] }
34 | simplelog = "0.12.1"
35 | tokio = { version = "1", features = ["full"] }
36 | toml = "0.7"
37 | toml_edit = "0.19"
38 | tui = { package = "ratatui", version = "0.22", features = ["all-widgets"] }
39 | 


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2023 Tobias Fried
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | # moccasin
  2 | 
  3 | A TUI feed reader for RSS, Atom, and (eventually) Podcasts. VIM keybindings. Ranger-inspired interface. Configurable.
  4 | 
  5 | ![Crates.io (version)](https://img.shields.io/crates/v/moccasin.svg?style=flat-square)
  6 | ![CI status](https://img.shields.io/github/actions/workflow/status/rektdeckard/moccasin/vhs.yaml?style=flat-square)
  7 | 
  8 | [![GitHub stars](https://img.shields.io/github/stars/rektdeckard/moccasin?style=flat-square&label=Star)](https://github.com/rektdeckard/moccasin)
  9 | [![GitHub forks](https://img.shields.io/github/forks/rektdeckard/moccasin?style=flat-square&label=Fork)](https://github.com/rektdeckard/moccasin/fork)
 10 | [![GitHub watchers](https://img.shields.io/github/watchers/rektdeckard/moccasin?style=flat-square&label=Watch)](https://github.com/rektdeckard/moccasin)
 11 | [![Follow on GitHub](https://img.shields.io/github/followers/rektdeckard?style=flat-square&label=Follow)](https://github.com/rektdeckard)
 12 | 
 13 | ![tabs TUI in action](https://github.com/rektdeckard/moccasin/blob/main/meta/vhs.gif?raw=true)
 14 | 
 15 | ## Installation
 16 | 
 17 | ```bash
 18 | cargo install moccasin
 19 | ```
 20 | 
 21 | ### NetBSD
 22 | 
 23 | If you are on NetBSD, a pre-compiled binary is available from the official repositories. To install it, simply run:
 24 | 
 25 | ```bash
 26 | pkgin install moccasin
 27 | ```
 28 | 
 29 | Or, if you prefer to build from source:
 30 | ```
 31 | cd /usr/pkgsrc/news/moccasin
 32 | make install
 33 | ```
 34 | 
 35 | ### Nix
 36 | 
 37 | moccasin is available as a Nix flake: `github:rektdeckard/moccasin`.
 38 | 
 39 | ## Usage
 40 | 
 41 | Since "moccasin" is hard to spell and has too many letters, the executable is just called `mcsn`.
 42 | 
 43 | ```bash
 44 | mcsn [OPTIONS]
 45 | ```
 46 | 
 47 | ### Options
 48 | 
 49 | Command line arguments will override any values set in your [config file](#moccasintoml) for that session.
 50 | 
 51 | | Short | Long             | Args             | Description                                                                                             |
 52 | | ----- | ---------------- | ---------------- | ------------------------------------------------------------------------------------------------------- |
 53 | | `-c`  | `--config`       | \<PATH\>         | Set a custom config file                                                                                |
 54 | | `-s`  | `--color-scheme` | \<COLOR_SCHEME\> | Set a color scheme, either [built-in](#moccasintoml) or a path to a [custom theme](#color-schemes) file |
 55 | | `-i`  | `--interval`     | \<INTERVAL\>     | Set a custom refresh rate in seconds                                                                    |
 56 | | `-t`  | `--timeout`      | \<TIMEOUT\>      | Set a custom request timeout in seconds                                                                 |
 57 | | `-n`  | `--no-cache`     |                  | Do not cache feeds in local file-backed database                                                        |
 58 | | `-h`  | `--help`         |                  | Print help                                                                                              |
 59 | | `-V`  | `--version`      |                  | Print version                                                                                           |
 60 | 
 61 | ## Config
 62 | 
 63 | On first boot, Moccasin will create both a database and a config file in your default config directory, which varies by platform:
 64 | 
 65 | | Platform | Value                                                      | Example                                                         |
 66 | | -------- | ---------------------------------------------------------- | --------------------------------------------------------------- |
 67 | | Linux    | `$HOME`/.config/moccasin/                                  | /home/alice/.config/moccasin/                                   |
 68 | | macOS    | `$HOME`/Library/Application Support/com.rektsoft.moccasin/ | /Users/Alice/Library/Application Support/com.rektsoft.moccasin/ |
 69 | | Windows  | `{FOLDERID_LocalAppData}`\\rektsoft\moccasin\\config       | C:\Users\Alice\AppData\Local\rektsoft\moccasin\config           |
 70 | 
 71 | The `moccasin.toml` file in this directory can be edited to customize app behavior, add feeds in bulk, change the color scheme, etc. Most of these properties can be changed from within the application as well, which will write to this file. Configuration options are as follows:
 72 | 
 73 | ### `moccasin.toml`
 74 | 
 75 | | Table           | Field              | Type          | Default     | Description                                                                                                                                                                                                         |
 76 | | --------------- | ------------------ | ------------- | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 77 | | `[sources]`     |                    | Table         |             |                                                                                                                                                                                                                     |
 78 | |                 | `feeds`            | Array         | `[]`        | URLs of Atom/RSS feeds you wish to see in-app.                                                                                                                                                                      |
 79 | | `[preferences]` |                    | Table         |             |                                                                                                                                                                                                                     |
 80 | |                 | `color_scheme`     | Enum \| Table | `"default"` | Either a built-in color scheme name, one of `"default"` \| `"borland"` \| `"darcula"` \| `"focus"` \| `"jungle"` \| `"matrix"` \| `"redshift"` \| `"wyse"`, or a table of values described [below](#color-schemes). |
 81 | |                 | `sort_feeds`       | Enum          | `"a-z"`     | Order in which to list feeds, one of `"a-z"` \| `"z-a"` \| `"newest"` \| `"oldest"` \| `"unread"` \| `"custom"`                                                                                                     |
 82 | |                 | `cache_feeds`      | Boolean       | `true`      | Whether or not to write feeds to a local database for faster startup and access. When `false`, the app will use an in-memory database.                                                                              |
 83 | |                 | `refresh_interval` | Integer       | `3600`      | How often to refetch feeds, in seconds.                                                                                                                                                                             |
 84 | |                 | `refresh_timeout`  | Integer       | `5`         | How long to wait for each feed before aborting, in seconds.                                                                                                                                                         |
 85 | 
 86 | ### Color Schemes
 87 | 
 88 | To create a custom color scheme, the `color_scheme` field can be declared as a table in which the keys are interface elements and the values are either a built-in ANSI color (which will inherit from your terminal emulator), a HEX color, or in InlineTable with `fg` and `bg` properties of the same type.
 89 | 
 90 | ```toml
 91 | [preferences.color_scheme]
 92 | base = { fg = "white", bg = "#000080" }
 93 | status = { fg = "gray", bg = "#000080" }
 94 | border = "gray"
 95 | selection_active = { fg = "#000080", bg = "#fefd72" }
 96 | scrollbar = { fg = "white", bg = "gray" }
 97 | ```
 98 | 
 99 | The built-in color names are
100 | 
101 | - `"white"`
102 | - `"black"`
103 | - `"red"`
104 | - `"green"`
105 | - `"yellow"`
106 | - `"blue"`
107 | - `"magenta"`
108 | - `"cyan"`
109 | - `"gray"`
110 | - `"lightred"`
111 | - `"lightgreen"`
112 | - `"lightyellow"`
113 | - `"lightblue"`
114 | - `"lightmagenta"`
115 | - `"lightcyan"`
116 | - `"lightblack"` | `"darkgray"`
117 | 
118 | The styleable properties are all optional, inheriting sensible defaults. Available properties are as follows:
119 | 
120 | | Field              | Default            | Description                                   |
121 | | ------------------ | ------------------ | --------------------------------------------- |
122 | | `base`             | _terminal default_ | Base foreground and background colors         |
123 | | `overlay`          | `base`             | Modal overlays                                |
124 | | `status`           | `base`             | The top menu bar and bottom status bar colors |
125 | | `selection`        | `~base`            | Selected list item                            |
126 | | `selection_active` | `selection`        | Selected list item of active panel            |
127 | | `border`           | `border_active`\*  | Border and titles around panels               |
128 | | `border_active`    | `base`             | Border and title of active panel              |
129 | | `scrollbar`        | `base`             | Thumb (`fg`) and track (`bg`) of scrollbars   |
130 | 
131 | > \* NOTE: it is important to define `border` when the style it inherits (either `base` or `border_active`) is defined as a hex color, otherwise it will be difficult to know which panel is currently active.
132 | 
133 | ## Keybinds
134 | 
135 | The application uses VIM-style keybinds, but arrow keys can also be used for navigation. At the moment, the app has a `NORMAL` mode and a `COMMAND` mode. In future, you should also be able to tag and group feeds and items in `GROUP` mode.
136 | 
137 | ### NORMAL mode
138 | 
139 | | Keys        | Description                       |
140 | | ----------- | --------------------------------- |
141 | | `j`/`k`     | Focus next/previous item          |
142 | | `h`/`l`     | Focus previous/next panel         |
143 | | `Enter`     | Select current item               |
144 | | `Esc`       | Deselect current item/mode        |
145 | | `Tab`       | Cycle tabs                        |
146 | | `b`/`f`/`t` | View Browse/Favorites/Tags tab    |
147 | | `r`         | Refresh all feeds                 |
148 | | `o`         | Open current feed/item in browser |
149 | | `:`         | Enter `COMMAND` mode              |
150 | | `,`         | Open config file                  |
151 | | `?`         | Show keybinds                     |
152 | 
153 | ### COMMAND mode
154 | 
155 | | Command         | Args     | Description                                                                                            |
156 | | --------------- | -------- | ------------------------------------------------------------------------------------------------------ |
157 | | `:a`, `:add`    | \<URL\>  | Add a feed                                                                                             |
158 | | `:d`, `:delete` | [URL]    | Delete feed for `URL`, or current feed if not supplied. Removes this entry from config file and cache. |
159 | | `:s`, `:search` | \<TEXT\> | Search for a feed, item, or text content                                                               |
160 | 
161 | ## License
162 | 
163 | MIT © [Tobias Fried](https://github.com/rektdeckard)
164 | 


--------------------------------------------------------------------------------
/flake.lock:
--------------------------------------------------------------------------------
 1 | {
 2 |   "nodes": {
 3 |     "flake-utils": {
 4 |       "inputs": {
 5 |         "systems": "systems"
 6 |       },
 7 |       "locked": {
 8 |         "lastModified": 1731533236,
 9 |         "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
10 |         "owner": "numtide",
11 |         "repo": "flake-utils",
12 |         "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
13 |         "type": "github"
14 |       },
15 |       "original": {
16 |         "owner": "numtide",
17 |         "repo": "flake-utils",
18 |         "type": "github"
19 |       }
20 |     },
21 |     "naersk": {
22 |       "inputs": {
23 |         "nixpkgs": "nixpkgs"
24 |       },
25 |       "locked": {
26 |         "lastModified": 1721727458,
27 |         "narHash": "sha256-r/xppY958gmZ4oTfLiHN0ZGuQ+RSTijDblVgVLFi1mw=",
28 |         "owner": "nix-community",
29 |         "repo": "naersk",
30 |         "rev": "3fb418eaf352498f6b6c30592e3beb63df42ef11",
31 |         "type": "github"
32 |       },
33 |       "original": {
34 |         "owner": "nix-community",
35 |         "repo": "naersk",
36 |         "type": "github"
37 |       }
38 |     },
39 |     "nixpkgs": {
40 |       "locked": {
41 |         "lastModified": 1723991338,
42 |         "narHash": "sha256-Grh5PF0+gootJfOJFenTTxDTYPidA3V28dqJ/WV7iis=",
43 |         "path": "/nix/store/d9gbq853jvbccrz5g3y0irbwgc57w137-source",
44 |         "rev": "8a3354191c0d7144db9756a74755672387b702ba",
45 |         "type": "path"
46 |       },
47 |       "original": {
48 |         "id": "nixpkgs",
49 |         "type": "indirect"
50 |       }
51 |     },
52 |     "nixpkgs_2": {
53 |       "locked": {
54 |         "lastModified": 1732238832,
55 |         "narHash": "sha256-sQxuJm8rHY20xq6Ah+GwIUkF95tWjGRd1X8xF+Pkk38=",
56 |         "owner": "NixOS",
57 |         "repo": "nixpkgs",
58 |         "rev": "8edf06bea5bcbee082df1b7369ff973b91618b8d",
59 |         "type": "github"
60 |       },
61 |       "original": {
62 |         "owner": "NixOS",
63 |         "ref": "nixpkgs-unstable",
64 |         "repo": "nixpkgs",
65 |         "type": "github"
66 |       }
67 |     },
68 |     "root": {
69 |       "inputs": {
70 |         "flake-utils": "flake-utils",
71 |         "naersk": "naersk",
72 |         "nixpkgs": "nixpkgs_2"
73 |       }
74 |     },
75 |     "systems": {
76 |       "locked": {
77 |         "lastModified": 1681028828,
78 |         "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
79 |         "owner": "nix-systems",
80 |         "repo": "default",
81 |         "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
82 |         "type": "github"
83 |       },
84 |       "original": {
85 |         "owner": "nix-systems",
86 |         "repo": "default",
87 |         "type": "github"
88 |       }
89 |     }
90 |   },
91 |   "root": "root",
92 |   "version": 7
93 | }
94 | 


--------------------------------------------------------------------------------
/flake.nix:
--------------------------------------------------------------------------------
 1 | {
 2 |   inputs = {
 3 |     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
 4 |     flake-utils.url = "github:numtide/flake-utils";
 5 |     naersk.url = "github:nix-community/naersk";
 6 |   };
 7 | 
 8 |   outputs =
 9 |     {
10 |       self,
11 |       flake-utils,
12 |       naersk,
13 |       nixpkgs,
14 |     }:
15 |     flake-utils.lib.eachDefaultSystem (
16 |       system:
17 |       let
18 |         pkgs = (import nixpkgs) { inherit system; };
19 |         naersk' = pkgs.callPackage naersk { };
20 |       in
21 |       {
22 |         # For `nix build` & `nix run`:
23 |         defaultPackage = naersk'.buildPackage { src = ./.; };
24 | 
25 |         # For `nix develop`:
26 |         devShell = pkgs.mkShell {
27 |           nativeBuildInputs = with pkgs; [
28 |             rustc
29 |             cargo
30 |             rust-analyzer
31 |             clippy
32 |             rustfmt
33 |           ];
34 |         };
35 |       }
36 |     );
37 | }
38 | 


--------------------------------------------------------------------------------
/meta/vhs.gif:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/rektdeckard/moccasin/95d223518f2a12bb516f29cf394ca47decd6ec9b/meta/vhs.gif


--------------------------------------------------------------------------------
/src/app.rs:
--------------------------------------------------------------------------------
  1 | use crate::config::Config;
  2 | use crate::feed::{Feed, Item};
  3 | use crate::repo::{Repository, RepositoryEvent};
  4 | use anyhow::Result;
  5 | use clap::Parser;
  6 | use std::error;
  7 | use std::process::{Child, Command, Stdio};
  8 | use std::str::FromStr;
  9 | use std::task::Poll;
 10 | use tokio::sync::mpsc::{self, UnboundedReceiver};
 11 | use tui::widgets::{ListState, ScrollbarState};
 12 | 
 13 | #[derive(Parser, Debug)]
 14 | #[command(author, version, about, long_about = None)]
 15 | pub struct Args {
 16 |     /// Set a custom config file
 17 |     #[arg(short, long)]
 18 |     pub config: Option<String>,
 19 | 
 20 |     /// Set a custom theme, either built-in or a path to a theme file
 21 |     #[arg(short = 's', long)]
 22 |     pub color_scheme: Option<String>,
 23 | 
 24 |     /// Set a custom refresh rate in seconds
 25 |     #[arg(short, long)]
 26 |     pub interval: Option<u64>,
 27 | 
 28 |     /// Set a custom request timeout in seconds
 29 |     #[arg(short, long)]
 30 |     pub timeout: Option<u64>,
 31 | 
 32 |     /// Do not cache feeds in local file-backed database
 33 |     #[arg(short, long)]
 34 |     pub no_cache: bool,
 35 | }
 36 | 
 37 | /// Application result type.
 38 | pub type AppResult<T> = std::result::Result<T, Box<dyn error::Error>>;
 39 | 
 40 | #[derive(Debug)]
 41 | pub enum Status {
 42 |     Loading(usize, usize),
 43 |     Errored(String),
 44 |     Done,
 45 | }
 46 | 
 47 | #[derive(Debug)]
 48 | pub enum ConsoleCommand {
 49 |     AddFeed(String),
 50 |     DeleteFeed(Option<String>),
 51 |     Search(String),
 52 | }
 53 | 
 54 | #[derive(Debug)]
 55 | pub enum ConsoleCommandError {
 56 |     BadCommand,
 57 |     BadArgument,
 58 | }
 59 | 
 60 | impl FromStr for ConsoleCommand {
 61 |     type Err = ConsoleCommandError;
 62 | 
 63 |     fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
 64 |         let parts = s.split_whitespace().collect::<Vec<_>>();
 65 | 
 66 |         if let Some(cmd) = parts.get(0) {
 67 |             match *cmd {
 68 |                 ":a" | ":add" => match parts.get(1) {
 69 |                     Some(url) => Ok(ConsoleCommand::AddFeed(url.to_string())),
 70 |                     None => Err(ConsoleCommandError::BadArgument),
 71 |                 },
 72 |                 ":s" | ":search" => {
 73 |                     let query = parts.iter().skip(1).copied().collect::<String>();
 74 |                     if query.is_empty() {
 75 |                         Err(ConsoleCommandError::BadArgument)
 76 |                     } else {
 77 |                         Ok(ConsoleCommand::Search(query))
 78 |                     }
 79 |                 }
 80 |                 ":d" | ":delete" => match parts.get(1) {
 81 |                     Some(url) => Ok(ConsoleCommand::DeleteFeed(Some(url.to_string()))),
 82 |                     None => Ok(ConsoleCommand::DeleteFeed(None)),
 83 |                 },
 84 |                 _ => Err(ConsoleCommandError::BadCommand),
 85 |             }
 86 |         } else {
 87 |             Err(ConsoleCommandError::BadCommand)
 88 |         }
 89 |     }
 90 | }
 91 | 
 92 | /// Application.
 93 | #[derive(Debug)]
 94 | pub struct App {
 95 |     pub config: Config,
 96 |     pub repo: Repository,
 97 |     pub running: bool,
 98 |     pub active_view: View,
 99 |     pub active_tab: Tab,
100 |     pub feeds: StatefulList<Feed>,
101 |     pub feeds_scroll: ScrollbarState,
102 |     pub items: StatefulList<Item>,
103 |     pub items_scroll: ScrollbarState,
104 |     pub detail_scroll: ScrollbarState,
105 |     pub detail_scroll_index: u16,
106 |     pub show_keybinds: bool,
107 |     pub status: Status,
108 |     pub command_state: InputState,
109 |     dimensions: (u16, u16),
110 |     repo_rx: UnboundedReceiver<RepositoryEvent>,
111 | }
112 | 
113 | impl App {
114 |     pub fn init(dimensions: (u16, u16)) -> Result<Self> {
115 |         let args = Args::parse();
116 |         let config = Config::new(args)?;
117 | 
118 |         let (tx, rx) = mpsc::unbounded_channel::<RepositoryEvent>();
119 |         let mut repo = Repository::init(&config, tx)?;
120 | 
121 |         let items = repo.read_all(&config).unwrap_or_default();
122 |         let feeds_count = items.len() as u16;
123 | 
124 |         Ok(Self {
125 |             config,
126 |             repo,
127 |             running: true,
128 |             dimensions,
129 |             active_view: View::MainList,
130 |             active_tab: Tab::Browse,
131 |             feeds: StatefulList::<Feed>::with_items(items),
132 |             feeds_scroll: ScrollbarState::default().content_length(feeds_count),
133 |             items: StatefulList::<Item>::default(),
134 |             items_scroll: ScrollbarState::default(),
135 |             detail_scroll: ScrollbarState::default(),
136 |             detail_scroll_index: 0,
137 |             status: Status::Done,
138 |             show_keybinds: false,
139 |             command_state: InputState::new(),
140 |             repo_rx: rx,
141 |         })
142 |     }
143 | 
144 |     /// Handles the tick event of the terminal.
145 |     pub fn tick(&mut self) {
146 |         self.repo.tick(&self.config);
147 | 
148 |         let waker = futures::task::noop_waker();
149 |         let mut cx = std::task::Context::from_waker(&waker);
150 | 
151 |         loop {
152 |             match self.repo_rx.poll_recv(&mut cx) {
153 |                 Poll::Ready(m) => match m {
154 |                     Some(RepositoryEvent::Requesting(amount)) => {
155 |                         self.status = match self.status {
156 |                             Status::Loading(curr, total) => Status::Loading(curr, total + amount),
157 |                             _ => Status::Loading(0, amount),
158 |                         };
159 |                     }
160 |                     Some(RepositoryEvent::Requested(counts)) => {
161 |                         let counts = match self.status {
162 |                             Status::Loading(current, total) => ((current + 1).min(total), total),
163 |                             _ => counts,
164 |                         };
165 |                         self.status = Status::Loading(counts.0, counts.1);
166 |                     }
167 |                     Some(RepositoryEvent::RetrievedAll(feeds)) => {
168 |                         self.set_feeds(feeds);
169 |                         self.status = Status::Done;
170 |                         break;
171 |                     }
172 |                     Some(RepositoryEvent::RetrievedOne(feed)) => {
173 |                         match self
174 |                             .feeds
175 |                             .items
176 |                             .iter()
177 |                             .enumerate()
178 |                             .find(|(_, f)| f.link() == feed.link())
179 |                         {
180 |                             Some((i, f)) => {
181 |                                 self.feeds.items[i] = f.clone();
182 |                             }
183 |                             None => {
184 |                                 self.feeds.items.push(feed);
185 |                             }
186 |                         }
187 | 
188 |                         match self.status {
189 |                             Status::Loading(_, _) => {
190 |                                 self.status = Status::Done;
191 |                             }
192 |                             _ => {}
193 |                         }
194 | 
195 |                         break;
196 |                     }
197 |                     Some(RepositoryEvent::Errored) => {
198 |                         self.status = Status::Errored("database transaction failed".into());
199 |                         break;
200 |                     }
201 |                     Some(RepositoryEvent::Refresh) => {}
202 |                     Some(RepositoryEvent::Aborted) => {
203 |                         self.status = Status::Done;
204 |                         break;
205 |                     }
206 |                     None => {
207 |                         break;
208 |                     }
209 |                 },
210 |                 Poll::Pending => {
211 |                     break;
212 |                 }
213 |             }
214 |         }
215 |     }
216 | 
217 |     /// Set running to false to quit the application.
218 |     pub fn quit(&mut self) {
219 |         self.running = false;
220 |     }
221 | 
222 |     pub fn set_dimensions(&mut self, dimensions: (u16, u16)) {
223 |         self.dimensions = dimensions;
224 |     }
225 | 
226 |     pub fn should_render_feeds_scroll(&self) -> bool {
227 |         self.feeds.items().len() as u16 > self.dimensions.1 - 8
228 |     }
229 | 
230 |     pub fn should_render_items_scroll(&self) -> bool {
231 |         self.items.items().len() as u16 > self.dimensions.1 - 8
232 |     }
233 | 
234 |     pub fn should_render_detail_scroll(&self) -> bool {
235 |         // TODO
236 |         false
237 |     }
238 | 
239 |     pub fn should_render_console(&self) -> bool {
240 |         self.command_state.show_input
241 |     }
242 | 
243 |     pub fn current_feed(&self) -> Option<&Feed> {
244 |         self.feeds
245 |             .state
246 |             .selected()
247 |             .and_then(|i| self.feeds.items().get(i))
248 |     }
249 | 
250 |     pub fn current_item(&self) -> Option<&Item> {
251 |         self.items
252 |             .state
253 |             .selected()
254 |             .and_then(|i| self.items.items().get(i))
255 |     }
256 | 
257 |     pub fn next_feed(&mut self) {
258 |         self.feeds.next();
259 |         self.feeds_scroll = self.feeds_scroll.position(
260 |             self.feeds
261 |                 .state
262 |                 .selected()
263 |                 .unwrap_or(self.feeds.state.offset()) as u16,
264 |         );
265 | 
266 |         if let Some(channel) = self.current_feed() {
267 |             self.items.items = channel.items().into();
268 |             self.items_scroll = self
269 |                 .items_scroll
270 |                 .content_length(self.items.items.len() as u16);
271 |         }
272 |     }
273 | 
274 |     pub fn prev_feed(&mut self) {
275 |         self.feeds.previous();
276 |         self.feeds_scroll = self.feeds_scroll.position(
277 |             self.feeds
278 |                 .state
279 |                 .selected()
280 |                 .unwrap_or(self.feeds.state.offset()) as u16,
281 |         );
282 | 
283 |         if let Some(channel) = self.current_feed() {
284 |             self.items.items = channel.items().into();
285 |             self.items_scroll = self
286 |                 .items_scroll
287 |                 .content_length(self.items.items.len() as u16);
288 |         }
289 |     }
290 | 
291 |     pub fn next_item(&mut self) {
292 |         self.items.next();
293 |         self.items_scroll = self.items_scroll.position(
294 |             self.items
295 |                 .state
296 |                 .selected()
297 |                 .unwrap_or(self.items.state.offset()) as u16,
298 |         );
299 |     }
300 | 
301 |     pub fn prev_item(&mut self) {
302 |         self.items.previous();
303 |         self.items_scroll = self.items_scroll.position(
304 |             self.items
305 |                 .state
306 |                 .selected()
307 |                 .unwrap_or(self.items.state.offset()) as u16,
308 |         );
309 |     }
310 | 
311 |     pub fn next_view(&mut self, wrap: bool) {
312 |         let has_current_feed = self.current_feed().is_some();
313 |         let has_current_item = self.current_item().is_some();
314 | 
315 |         if !has_current_feed {
316 |             self.active_view = View::MainList;
317 |             return;
318 |         }
319 | 
320 |         if let Some(next_view) = match self.active_view {
321 |             View::MainList => {
322 |                 if self.items.state.selected().is_none() {
323 |                     self.next_item();
324 |                 }
325 |                 Some(View::SubList)
326 |             }
327 |             View::SubList => {
328 |                 if has_current_item {
329 |                     Some(View::Detail)
330 |                 } else if wrap {
331 |                     Some(View::MainList)
332 |                 } else {
333 |                     None
334 |                 }
335 |             }
336 |             View::Detail => {
337 |                 if wrap {
338 |                     Some(View::MainList)
339 |                 } else {
340 |                     None
341 |                 }
342 |             }
343 |         } {
344 |             self.active_view = next_view;
345 |         }
346 |     }
347 | 
348 |     pub fn prev_view(&mut self, wrap: bool) {
349 |         let has_current_feed = self.current_feed().is_some();
350 |         let has_current_item = self.current_item().is_some();
351 | 
352 |         if !has_current_feed {
353 |             self.active_view = View::MainList;
354 |             return;
355 |         }
356 | 
357 |         if let Some(next_view) = match self.active_view {
358 |             View::MainList => {
359 |                 if wrap && has_current_item {
360 |                     Some(View::Detail)
361 |                 } else if wrap {
362 |                     Some(View::SubList)
363 |                 } else {
364 |                     None
365 |                 }
366 |             }
367 |             View::SubList => Some(View::MainList),
368 |             View::Detail => Some(View::SubList),
369 |         } {
370 |             self.active_view = next_view;
371 |         }
372 |     }
373 | 
374 |     pub fn next(&mut self) {
375 |         match self.active_view {
376 |             View::MainList => {
377 |                 self.reset_items_scroll();
378 |                 self.reset_detail_scroll();
379 |                 self.next_feed();
380 |             }
381 |             View::SubList => {
382 |                 self.reset_detail_scroll();
383 |                 self.next_item();
384 |             }
385 |             View::Detail => {
386 |                 self.detail_scroll_index = self.detail_scroll_index.saturating_add(1);
387 |                 self.detail_scroll.next();
388 |             }
389 |         }
390 |     }
391 | 
392 |     pub fn prev(&mut self) {
393 |         match self.active_view {
394 |             View::MainList => {
395 |                 self.reset_items_scroll();
396 |                 self.reset_detail_scroll();
397 |                 self.prev_feed();
398 |             }
399 |             View::SubList => {
400 |                 self.reset_detail_scroll();
401 |                 self.prev_item();
402 |             }
403 |             View::Detail => {
404 |                 self.detail_scroll_index = self.detail_scroll_index.saturating_sub(1);
405 |                 self.detail_scroll.prev();
406 |             }
407 |         }
408 |     }
409 | 
410 |     pub fn next_tab(&mut self) {
411 |         let next_tab = match self.active_tab {
412 |             Tab::Browse => Tab::Favorites,
413 |             Tab::Favorites => Tab::Tags,
414 |             Tab::Tags => Tab::Browse,
415 |         };
416 | 
417 |         self.active_tab = next_tab;
418 |     }
419 | 
420 |     pub fn prev_tab(&mut self) {
421 |         let prev_tab = match self.active_tab {
422 |             Tab::Browse => Tab::Tags,
423 |             Tab::Favorites => Tab::Browse,
424 |             Tab::Tags => Tab::Favorites,
425 |         };
426 | 
427 |         self.active_tab = prev_tab;
428 |     }
429 | 
430 |     pub fn set_tab(&mut self, index: usize) {
431 |         self.active_tab = Tab::from(index);
432 |     }
433 | 
434 |     pub fn unselect(&mut self) {
435 |         if self.current_item().is_some() {
436 |             self.items.state.select(None);
437 |         } else {
438 |             self.feeds.state.select(None);
439 |         }
440 |         self.prev_view(false);
441 |     }
442 | 
443 |     pub fn open(&mut self) {
444 |         match self.active_view {
445 |             View::MainList => {
446 |                 if let Some(feed) = self.current_feed() {
447 |                     let link = feed.link();
448 |                     let _ = App::open_link(link);
449 |                 }
450 |             }
451 |             View::SubList => {
452 |                 if let Some(item) = self.current_item() {
453 |                     if let Some(link) = item.link() {
454 |                         let _ = App::open_link(link);
455 |                     }
456 |                 }
457 |             }
458 |             _ => {}
459 |         }
460 |     }
461 | 
462 |     pub fn open_config(&self) -> Option<Child> {
463 |         if let Some(cfg_path) = self.config.config_file_path().as_path().to_str() {
464 |             Self::open_link(cfg_path)
465 |         } else {
466 |             None
467 |         }
468 |     }
469 | 
470 |     pub fn refresh_all(&mut self) {
471 |         self.repo.refresh_all(&self.config)
472 |     }
473 | 
474 |     pub fn toggle_keybinds(&mut self) {
475 |         self.show_keybinds = !self.show_keybinds;
476 |     }
477 | 
478 |     pub fn toggle_console(&mut self, cmd: Option<&str>) {
479 |         if let Some(cmd) = cmd {
480 |             self.command_state.input = cmd.into();
481 |             self.command_state.cursor_position = self.clamp_cursor(cmd.len());
482 |         } else {
483 |             self.command_state.input.clear();
484 |             self.reset_cursor();
485 |         }
486 |         self.command_state.show_input = !self.command_state.show_input;
487 |     }
488 | 
489 |     pub fn move_cursor_left(&mut self) {
490 |         let cursor_moved_left = self.command_state.cursor_position.saturating_sub(1);
491 |         self.command_state.cursor_position = self.clamp_cursor(cursor_moved_left);
492 |     }
493 | 
494 |     pub fn move_cursor_right(&mut self) {
495 |         let cursor_moved_right = self.command_state.cursor_position.saturating_add(1);
496 |         self.command_state.cursor_position = self.clamp_cursor(cursor_moved_right);
497 |     }
498 | 
499 |     pub fn enter_char(&mut self, new_char: char) {
500 |         self.command_state
501 |             .input
502 |             .insert(self.command_state.cursor_position, new_char);
503 |         self.move_cursor_right();
504 |     }
505 | 
506 |     pub fn delete_char(&mut self) {
507 |         let is_not_cursor_leftmost = self.command_state.cursor_position != 0;
508 |         if is_not_cursor_leftmost {
509 |             // Method "remove" is not used on the saved text for deleting the selected char.
510 |             // Reason: Using remove on String works on bytes instead of the chars.
511 |             // Using remove would require special care because of char boundaries.
512 | 
513 |             let current_index = self.command_state.cursor_position;
514 |             let from_left_to_current_index = current_index - 1;
515 | 
516 |             // Getting all characters before the selected character.
517 |             let before_char_to_delete = self
518 |                 .command_state
519 |                 .input
520 |                 .chars()
521 |                 .take(from_left_to_current_index);
522 |             // Getting all characters after selected character.
523 |             let after_char_to_delete = self.command_state.input.chars().skip(current_index);
524 | 
525 |             // Put all characters together except the selected one.
526 |             // By leaving the selected one out, it is forgotten and therefore deleted.
527 |             self.command_state.input = before_char_to_delete.chain(after_char_to_delete).collect();
528 |             self.move_cursor_left();
529 |         }
530 |     }
531 | 
532 |     fn clamp_cursor(&self, new_cursor_pos: usize) -> usize {
533 |         new_cursor_pos.clamp(0, self.command_state.input.len())
534 |     }
535 | 
536 |     fn reset_cursor(&mut self) {
537 |         self.command_state.cursor_position = 0;
538 |     }
539 | 
540 |     pub fn submit_command(&mut self) {
541 |         match self.command_state.input.parse::<ConsoleCommand>() {
542 |             Ok(ConsoleCommand::AddFeed(url)) => {
543 |                 self.config.add_feed_url(&url);
544 |                 self.repo.add_feed_url(&url, &self.config);
545 |             }
546 |             Ok(ConsoleCommand::DeleteFeed(maybe_url)) => {
547 |                 if let Some(url) =
548 |                     maybe_url.or(self.current_feed().and_then(|f| Some(f.url().into())))
549 |                 {
550 |                     self.config.remove_feed_url(&url);
551 |                     self.repo.remove_feed_url(&url);
552 | 
553 |                     // TODO: refactor, this is so bad
554 |                     self.feeds.items.retain(|u| u.url() != url);
555 |                     self.feeds.state.select(None);
556 |                     self.reset_items_scroll();
557 |                     self.reset_detail_scroll();
558 |                 }
559 |             }
560 |             Ok(ConsoleCommand::Search(_)) => todo!(),
561 |             _ => self.status = Status::Errored("unrecognized command".into()),
562 |         }
563 | 
564 |         self.command_state.input.clear();
565 |         self.reset_cursor();
566 |         self.toggle_console(None);
567 |     }
568 | 
569 |     fn set_feeds(&mut self, feeds: Vec<Feed>) {
570 |         self.feeds.items = feeds;
571 |         // self.items.state.select(None);
572 |         // self.active_view = ActiveView::Feeds;
573 |     }
574 | 
575 |     fn reset_items_scroll(&mut self) {
576 |         self.items.state.select(None);
577 |         self.items_scroll = self.items_scroll.position(0);
578 |     }
579 | 
580 |     fn reset_detail_scroll(&mut self) {
581 |         self.detail_scroll_index = 0;
582 |         self.detail_scroll = self.detail_scroll.position(0);
583 |     }
584 | 
585 |     fn open_link(link: &str) -> Option<Child> {
586 |         let null = Stdio::null();
587 |         if cfg!(target_os = "windows") {
588 |             Command::new("rundll32")
589 |                 .args(["url.dll,FileProtocolHandler", link])
590 |                 .stdout(null)
591 |                 .spawn()
592 |                 .ok()
593 |         } else if cfg!(target_os = "macos") {
594 |             Command::new("open").arg(link).stdout(null).spawn().ok()
595 |         } else if cfg!(target_os = "linux") {
596 |             Command::new("xdg-open").arg(link).stdout(null).spawn().ok()
597 |         } else {
598 |             None
599 |         }
600 |     }
601 | }
602 | 
603 | #[derive(Debug, PartialEq)]
604 | pub enum View {
605 |     MainList,
606 |     SubList,
607 |     Detail,
608 | }
609 | 
610 | #[derive(Debug, PartialEq)]
611 | pub enum Tab {
612 |     Browse,
613 |     Favorites,
614 |     Tags,
615 | }
616 | 
617 | impl ToString for Tab {
618 |     fn to_string(&self) -> String {
619 |         match self {
620 |             Self::Browse => "Browse".into(),
621 |             Self::Favorites => "Favorites".into(),
622 |             Self::Tags => "Tags".into(),
623 |         }
624 |     }
625 | }
626 | 
627 | impl Tab {
628 |     pub fn index_of(&self) -> usize {
629 |         match self {
630 |             Self::Browse => 0,
631 |             Self::Favorites => 1,
632 |             Self::Tags => 2,
633 |         }
634 |     }
635 | }
636 | 
637 | impl From<usize> for Tab {
638 |     fn from(value: usize) -> Self {
639 |         match value {
640 |             1 => Tab::Favorites,
641 |             2 => Tab::Tags,
642 |             _ => Tab::Browse,
643 |         }
644 |     }
645 | }
646 | 
647 | #[derive(Default, Debug)]
648 | pub struct StatefulList<T> {
649 |     pub state: ListState,
650 |     pub items: Vec<T>,
651 | }
652 | 
653 | impl<T> StatefulList<T> {
654 |     fn with_items(items: Vec<T>) -> StatefulList<T> {
655 |         StatefulList {
656 |             state: ListState::default(),
657 |             items,
658 |         }
659 |     }
660 | 
661 |     fn next(&mut self) {
662 |         if self.items.len() == 0 {
663 |             return;
664 |         }
665 | 
666 |         let i = match self.state.selected() {
667 |             Some(i) => {
668 |                 if i >= self.items.len() - 1 {
669 |                     0
670 |                 } else {
671 |                     i + 1
672 |                 }
673 |             }
674 |             None => 0,
675 |         };
676 |         self.state.select(Some(i));
677 |     }
678 | 
679 |     fn previous(&mut self) {
680 |         if self.items.len() == 0 {
681 |             return;
682 |         }
683 | 
684 |         let i = match self.state.selected() {
685 |             Some(i) => {
686 |                 if i <= 0 {
687 |                     self.items.len() - 1
688 |                 } else {
689 |                     i - 1
690 |                 }
691 |             }
692 |             None => 0,
693 |         };
694 |         self.state.select(Some(i));
695 |     }
696 | 
697 |     #[allow(dead_code)]
698 |     fn unselect(&mut self) {
699 |         self.state.select(None);
700 |     }
701 | 
702 |     pub fn items(&self) -> &Vec<T> {
703 |         &self.items
704 |     }
705 | }
706 | 
707 | #[derive(Debug)]
708 | pub struct InputState {
709 |     pub input: String,
710 |     pub cursor_position: usize,
711 |     show_input: bool,
712 | }
713 | 
714 | impl InputState {
715 |     fn new() -> Self {
716 |         Self {
717 |             input: String::new(),
718 |             cursor_position: 0,
719 |             show_input: false,
720 |         }
721 |     }
722 | }
723 | 


--------------------------------------------------------------------------------
/src/config/moccasin.toml:
--------------------------------------------------------------------------------
 1 | # moccasin config
 2 | # This file may be modified by moccasin when changes are made via software,
 3 | # E.G. importing OPML files or individual feeds and changing colorschemes.
 4 | 
 5 | [sources]
 6 | # List URLs for Atom or RSS feeds here
 7 | feeds = [
 8 |     "https://bigthink.com/feed/all/",
 9 |     "https://feeds.feedburner.com/brainpickings/rss",
10 |     "https://feeds.simplecast.com/dLRotFGk",
11 |     "https://alistapart.com/main/feed/",
12 | ]
13 | 
14 | [preferences]
15 | # The TUI color scheme, either a built-in scheme name:
16 | #     "default" | "borland" | "darcula" | "focus" | "jungle" | "matrix" | "redshift" | "wyse"
17 | # or a table of key-value pairs, in which value is either a hex color string,
18 | # a built-in color string, one of:
19 | #     | "black" | "red" | "yellow" | "blue" | "magenta" | "cyan" | "gray"
20 | #     | "darkgray" | "lightred" | "lightgreen" | "lightyellow" | "lightblue"
21 | #     | "lightmagenta" | "lightcyan" | "white"
22 | # or an inline table of fg and bg colors of the same type:
23 | #     [preferences.color_scheme]
24 | #     name = "borland"
25 | #     base = { fg = "#FFFFFF", bg = "#000080" }
26 | #     overlay = { fg = "#000080", bg = "#bbbbbb" }
27 | #     status = { fg = "#bbbbbb", bg = "#000080" }
28 | #     border = "#bbbbbb"
29 | #     border_active = "#FFFFFF"
30 | #     selection = { fg = "#000080", bg = "#bbbbbb" }
31 | #     selection_active = { fg = "#000080", bg = "#fefd72" }
32 | #     scrollbar = { fg = "#FFFFFF", bg = "#bbbbbb" }
33 | # All values are optional, and will inherit sensible defaults if omitted.
34 | color_scheme = "default"
35 | 
36 | # The default sort order of feeds in the left panel, one of:
37 | #     "a-z" | "z-a" | "newest" | "oldest" | "unread" | "custom"
38 | # where "custom" is the order listed in [sources.feeds], and "unread" is sorted
39 | # first by unread, then by newest.
40 | sort_feeds = "a-z"
41 | 
42 | # Whether or not to cache feeds in a local file-backed database
43 | cache_feeds = true
44 | 
45 | # How often to refresh feeds, in seconds.
46 | # The default is 3600 (1 hour), and 0 means refresh is always manual.
47 | refresh_interval = 3600
48 | 
49 | # How long to wait on a given feed before timing out, in seconds
50 | refresh_timeout = 10
51 | 


--------------------------------------------------------------------------------
/src/config/mod.rs:
--------------------------------------------------------------------------------
  1 | use crate::app::Args;
  2 | use anyhow::Result;
  3 | use directories::ProjectDirs;
  4 | use std::collections::HashSet;
  5 | use std::fs::OpenOptions;
  6 | use std::io::Write;
  7 | use std::path::{Path, PathBuf};
  8 | use std::str::FromStr;
  9 | use std::{fs, fs::File};
 10 | use toml::{Table, Value};
 11 | use toml_edit::{value, Array, Document};
 12 | 
 13 | mod theme;
 14 | 
 15 | const DEFAULT_CONFIG_FILE: &'static str = "moccasin.toml";
 16 | const DEFAULT_DB_FILE: &'static str = "moccasin.db";
 17 | const DEFAULT_REFRESH_INTERVAL: u64 = 300;
 18 | const DEFAULT_REFRESH_TIMEOUT: u64 = 5;
 19 | 
 20 | #[derive(Debug, Default, Clone)]
 21 | pub struct Config {
 22 |     file_path: PathBuf,
 23 |     dir_path: PathBuf,
 24 |     feed_urls: HashSet<String>,
 25 |     sort_order: SortOrder,
 26 |     cache_control: CacheControl,
 27 |     refresh_interval: u64,
 28 |     refresh_timeout: u64,
 29 |     theme: theme::Theme,
 30 | }
 31 | 
 32 | #[derive(Debug, Default, Clone)]
 33 | pub enum SortOrder {
 34 |     #[default]
 35 |     Az,
 36 |     Za,
 37 |     Unread,
 38 |     Newest,
 39 |     Oldest,
 40 |     Custom,
 41 | }
 42 | 
 43 | #[derive(Debug, Default, Clone, PartialEq)]
 44 | pub enum CacheControl {
 45 |     #[default]
 46 |     Always,
 47 |     Never,
 48 | }
 49 | 
 50 | impl From<bool> for CacheControl {
 51 |     fn from(value: bool) -> Self {
 52 |         if value {
 53 |             Self::Always
 54 |         } else {
 55 |             Self::Never
 56 |         }
 57 |     }
 58 | }
 59 | 
 60 | #[derive(Debug)]
 61 | pub struct SortOrderError;
 62 | 
 63 | impl FromStr for SortOrder {
 64 |     type Err = SortOrderError;
 65 | 
 66 |     fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
 67 |         match s {
 68 |             "a-z" => Ok(SortOrder::Az),
 69 |             "z-a" => Ok(SortOrder::Za),
 70 |             "newest" => Ok(SortOrder::Newest),
 71 |             "oldest" => Ok(SortOrder::Oldest),
 72 |             "custom" => Ok(SortOrder::Custom),
 73 |             _ => Ok(SortOrder::Az),
 74 |         }
 75 |     }
 76 | }
 77 | 
 78 | impl Config {
 79 |     pub fn new(args: Args) -> Result<Self> {
 80 |         let (dir_path, file_path): (PathBuf, PathBuf) = if let Some(path) = &args.config {
 81 |             let file_path = Path::new(&path);
 82 |             if !file_path.exists() {
 83 |                 panic!(
 84 |                     "no config file found at '{}'",
 85 |                     file_path.to_owned().to_str().unwrap()
 86 |                 )
 87 |             }
 88 | 
 89 |             let dir_path = file_path.parent().expect("could not find config directory");
 90 |             (dir_path.into(), file_path.into())
 91 |         } else {
 92 |             let dir_path = ProjectDirs::from("com", "rektsoft", "moccasin")
 93 |                 .unwrap()
 94 |                 .config_local_dir()
 95 |                 .to_owned();
 96 |             let file_path = dir_path.join(DEFAULT_CONFIG_FILE).to_owned();
 97 |             fs::create_dir_all(&dir_path)?;
 98 |             (dir_path, file_path)
 99 |         };
100 | 
101 |         if cfg!(debug_assertions) {
102 |             dbg!(&dir_path.join("moccasin.log"));
103 |             let file = OpenOptions::new()
104 |                 .create(true)
105 |                 .write(true)
106 |                 .append(true)
107 |                 .open(dir_path.join("moccasin.log"))
108 |                 .expect("could not open file for witing");
109 |             simplelog::WriteLogger::init(
110 |                 simplelog::LevelFilter::Info,
111 |                 simplelog::Config::default(),
112 |                 file,
113 |             )
114 |             .expect("could not initialize logger");
115 |         }
116 | 
117 |         if file_path.exists() {
118 |             Self::read_from_toml(args, dir_path, file_path)
119 |         } else {
120 |             Self::create_initialized(args, dir_path, file_path)
121 |         }
122 |     }
123 | 
124 |     pub fn config_dir_path(&self) -> PathBuf {
125 |         Path::new(&self.dir_path).to_owned()
126 |     }
127 | 
128 |     pub fn config_file_path(&self) -> PathBuf {
129 |         Path::new(&self.file_path).to_owned()
130 |     }
131 | 
132 |     pub fn db_path(&self) -> PathBuf {
133 |         self.config_dir_path().join(DEFAULT_DB_FILE)
134 |     }
135 | 
136 |     pub fn themes_path(&self) -> PathBuf {
137 |         self.config_dir_path().join("themes")
138 |     }
139 | 
140 |     pub fn theme(&self) -> &theme::Theme {
141 |         &self.theme
142 |     }
143 | 
144 |     pub fn feed_urls(&self) -> &HashSet<String> {
145 |         &self.feed_urls
146 |     }
147 | 
148 |     pub fn sort_order(&self) -> &SortOrder {
149 |         &self.sort_order
150 |     }
151 | 
152 |     pub fn should_cache(&self) -> bool {
153 |         self.cache_control == CacheControl::Always
154 |     }
155 | 
156 |     pub fn refresh_interval(&self) -> u64 {
157 |         self.refresh_interval
158 |     }
159 | 
160 |     pub fn refresh_timeout(&self) -> u64 {
161 |         self.refresh_timeout
162 |     }
163 | 
164 |     pub fn write_config(&self) -> Result<()> {
165 |         let toml = fs::read_to_string(&self.file_path)?;
166 |         let mut toml = toml.parse::<Document>()?;
167 | 
168 |         let mut urls = Array::new();
169 |         for url in self.feed_urls() {
170 |             urls.push_formatted(url.into());
171 |         }
172 |         urls.set_trailing_comma(true);
173 |         toml["sources"]["feeds"] = value(urls);
174 | 
175 |         let _ = fs::write(&self.file_path, toml.to_string())?;
176 |         Ok(())
177 |     }
178 | 
179 |     pub fn add_feed_url(&mut self, url: &str) -> Result<()> {
180 |         if !self.feed_urls().contains(url) {
181 |             log::info!("Adding new feed for {}", url);
182 |             self.feed_urls.insert(url.into());
183 |             self.write_config()?;
184 |         }
185 |         Ok(())
186 |     }
187 | 
188 |     pub fn remove_feed_url(&mut self, url: &str) -> Result<()> {
189 |         if self.feed_urls().contains(url) {
190 |             log::info!("Deleting feed for {}", url);
191 |             self.feed_urls.remove(url);
192 |             self.write_config()?;
193 |         }
194 |         Ok(())
195 |     }
196 | 
197 |     fn read_from_toml(args: Args, dir_path: PathBuf, file_path: PathBuf) -> Result<Self> {
198 |         let toml = fs::read_to_string(&file_path)?;
199 |         let table = toml.parse::<Table>()?;
200 |         let feeds: HashSet<String> = match table.get("sources") {
201 |             Some(Value::Table(sources)) => match sources.get("feeds") {
202 |                 Some(Value::Array(els)) => els
203 |                     .iter()
204 |                     .filter_map(|v| v.as_str().and_then(|v| Some(v.to_owned())))
205 |                     .collect(),
206 |                 Some(_) => {
207 |                     panic!("unexpected config entry for [sources].feeds")
208 |                 }
209 |                 _ => HashSet::new(),
210 |             },
211 |             _ => panic!("unexpected config entry for [sources]"),
212 |         };
213 | 
214 |         let preferences = match table.get("preferences") {
215 |             Some(Value::Table(prefs)) => Some(prefs),
216 |             Some(_) => panic!("invalid config entry for [preferences]"),
217 |             None => None,
218 |         };
219 | 
220 |         // TODO: load from args if present
221 |         let theme = args
222 |             .color_scheme
223 |             .and_then(|scheme| theme::Theme::from_str(&scheme).ok())
224 |             .or(preferences.and_then(|prefs| {
225 |                 prefs
226 |                     .get("color_scheme")
227 |                     .and_then(|scheme| theme::Theme::try_from(scheme).ok())
228 |             }))
229 |             .unwrap_or_default();
230 | 
231 |         let sort_order: SortOrder = preferences
232 |             .and_then(|prefs| {
233 |                 prefs.get("sort_feeds").and_then(|ord| match ord {
234 |                     Value::String(ord) => Some(SortOrder::from_str(ord).unwrap()),
235 |                     _ => None,
236 |                 })
237 |             })
238 |             .unwrap_or_default();
239 | 
240 |         let refresh_interval = args
241 |             .interval
242 |             .or({
243 |                 preferences.and_then(|prefs| {
244 |                     prefs.get("refresh_interval").and_then(|i| match i {
245 |                         Value::Integer(i) => Some(*i as u64),
246 |                         _ => None,
247 |                     })
248 |                 })
249 |             })
250 |             .unwrap_or(DEFAULT_REFRESH_INTERVAL);
251 | 
252 |         let refresh_timeout = args
253 |             .timeout
254 |             .or({
255 |                 preferences.and_then(|prefs| {
256 |                     prefs.get("refresh_timeout").and_then(|i| match i {
257 |                         Value::Integer(i) => Some(*i as u64),
258 |                         _ => None,
259 |                     })
260 |                 })
261 |             })
262 |             .unwrap_or(DEFAULT_REFRESH_TIMEOUT);
263 | 
264 |         let cache_control = if args.no_cache {
265 |             CacheControl::Never
266 |         } else {
267 |             preferences
268 |                 .and_then(|prefs| {
269 |                     prefs.get("cache_feeds").and_then(|i| match i {
270 |                         Value::Boolean(b) => Some(CacheControl::from(*b)),
271 |                         _ => None,
272 |                     })
273 |                 })
274 |                 .unwrap_or(CacheControl::Always)
275 |         };
276 | 
277 |         Ok(Self {
278 |             file_path,
279 |             dir_path,
280 |             feed_urls: feeds,
281 |             sort_order,
282 |             cache_control,
283 |             refresh_interval,
284 |             refresh_timeout,
285 |             theme,
286 |         })
287 |     }
288 | 
289 |     fn create_initialized(args: Args, dir_path: PathBuf, file_path: PathBuf) -> Result<Self> {
290 |         fs::create_dir_all(&dir_path)?;
291 |         let cfg_path = Path::new(dir_path.as_path()).join(DEFAULT_CONFIG_FILE);
292 |         let mut file = File::create(&cfg_path)?;
293 |         let toml = include_str!("moccasin.toml");
294 |         let stub = toml.parse::<Table>()?;
295 |         let feed_urls = stub["sources"]["feeds"]
296 |             .as_array()
297 |             .expect("parse default feeds")
298 |             .iter()
299 |             .filter_map(Value::as_str)
300 |             .map(String::from)
301 |             .collect::<HashSet<_>>();
302 |         file.write(toml.as_bytes())?;
303 | 
304 |         // TODO: load theme from args if present
305 |         Ok(Self {
306 |             dir_path: dir_path.to_owned(),
307 |             file_path: file_path.to_owned(),
308 |             feed_urls,
309 |             refresh_interval: args.interval.unwrap_or(DEFAULT_REFRESH_INTERVAL),
310 |             ..Default::default()
311 |         })
312 |     }
313 | }
314 | 


--------------------------------------------------------------------------------
/src/config/theme.rs:
--------------------------------------------------------------------------------
  1 | use serde::{Deserialize, Serialize};
  2 | use std::fmt;
  3 | use std::{error::Error, str::FromStr};
  4 | use toml::Value;
  5 | use tui::style::{Color, Modifier, Style, Stylize};
  6 | 
  7 | #[derive(Debug)]
  8 | enum ParseColorError {
  9 |     InvalidFormat,
 10 |     #[allow(dead_code)]
 11 |     InvalidDigit,
 12 |     #[allow(dead_code)]
 13 |     Empty,
 14 | }
 15 | 
 16 | #[derive(Debug)]
 17 | pub struct ParseThemeError;
 18 | 
 19 | impl fmt::Display for ParseThemeError {
 20 |     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
 21 |         write!(f, "error parsing theme")
 22 |     }
 23 | }
 24 | 
 25 | impl Error for ParseThemeError {
 26 |     fn source(&self) -> Option<&(dyn Error + 'static)> {
 27 |         None
 28 |     }
 29 | 
 30 |     fn description(&self) -> &str {
 31 |         "description() is deprecated; use Display"
 32 |     }
 33 | 
 34 |     fn cause(&self) -> Option<&dyn Error> {
 35 |         self.source()
 36 |     }
 37 | }
 38 | 
 39 | fn make_color(c: &str) -> Color {
 40 |     if let Ok(c) = colorsys::Rgb::from_hex_str(c) {
 41 |         Color::Rgb(c.red() as u8, c.green() as u8, c.blue() as u8)
 42 |     } else {
 43 |         Color::Reset
 44 |     }
 45 | }
 46 | 
 47 | #[derive(Debug, Clone)]
 48 | pub struct Theme {
 49 |     base: Style,
 50 |     overlay: Option<Style>,
 51 |     status: Option<Style>,
 52 |     selection: Option<Style>,
 53 |     selection_active: Option<Style>,
 54 |     border: Option<Style>,
 55 |     border_active: Option<Style>,
 56 |     scrollbar: Option<Style>,
 57 | }
 58 | 
 59 | impl Theme {
 60 |     pub fn base(&self) -> Style {
 61 |         self.base.clone()
 62 |     }
 63 | 
 64 |     pub fn overlay(&self) -> Style {
 65 |         self.overlay.unwrap_or(self.base).clone()
 66 |     }
 67 | 
 68 |     pub fn status(&self) -> Style {
 69 |         self.status.unwrap_or(self.base()).clone()
 70 |     }
 71 | 
 72 |     pub fn selection(&self) -> Style {
 73 |         if let Some(s) = self.selection {
 74 |             s.to_owned()
 75 |         } else {
 76 |             self.base.clone().add_modifier(Modifier::REVERSED)
 77 |         }
 78 |     }
 79 | 
 80 |     pub fn active_selection(&self) -> Style {
 81 |         if let Some(s) = self.selection_active {
 82 |             s.to_owned()
 83 |         } else {
 84 |             self.selection()
 85 |         }
 86 |     }
 87 | 
 88 |     pub fn border(&self) -> Style {
 89 |         if let Some(s) = self.border {
 90 |             s.to_owned()
 91 |         } else {
 92 |             self.active_border().add_modifier(Modifier::DIM)
 93 |         }
 94 |     }
 95 | 
 96 |     pub fn active_border(&self) -> Style {
 97 |         if let Some(s) = self.border_active {
 98 |             s.to_owned()
 99 |         } else {
100 |             self.base.clone()
101 |         }
102 |     }
103 | 
104 |     pub fn scrollbar_thumb(&self) -> Style {
105 |         if let Some(s) = self.scrollbar {
106 |             if let Some(fg) = s.fg {
107 |                 Style::default().fg(fg)
108 |             } else {
109 |                 Style::default()
110 |             }
111 |         } else {
112 |             Style::default()
113 |         }
114 |     }
115 | 
116 |     pub fn scrollbar_track(&self) -> Style {
117 |         if let Some(s) = self.scrollbar {
118 |             if let Some(bg) = s.bg.or(self.base.bg) {
119 |                 Style::default().fg(bg)
120 |             } else {
121 |                 Style::default().dim()
122 |             }
123 |         } else {
124 |             self.base().dim()
125 |         }
126 |     }
127 | 
128 |     pub fn borland() -> Self {
129 |         let white = make_color("#FFFFFF");
130 |         let gray = make_color("#bbbbbb");
131 |         let midnight = make_color("#000080");
132 |         let yellow = make_color("#fefd72");
133 |         let red = make_color("#850908");
134 | 
135 |         Self {
136 |             base: Style::default().fg(white).bg(midnight),
137 |             overlay: Some(Style::default().fg(midnight).bg(gray)),
138 |             status: Some(Style::default().fg(gray).bg(midnight)),
139 |             border: Some(Style::default().fg(gray)),
140 |             border_active: Some(Style::default().fg(white)),
141 |             selection: Some(Style::default().fg(midnight).bg(gray)),
142 |             selection_active: Some(Style::default().fg(midnight).bg(yellow)),
143 |             scrollbar: Some(Style::default().fg(white).bg(gray)),
144 |         }
145 |     }
146 | 
147 |     pub fn darcula() -> Self {
148 |         let background = make_color("#242424");
149 |         let bright_black = make_color("#707070");
150 |         let bright_blue = make_color("#7A9EC2");
151 |         let bright_white = make_color("#CCCCCC");
152 |         let bright_yellow = make_color("#CD9731");
153 |         let yellow = make_color("#FFC66D");
154 | 
155 |         Self {
156 |             base: Style::default().fg(bright_white).bg(background),
157 |             overlay: Some(Style::default().fg(background).bg(bright_blue)),
158 |             status: Some(Style::default().fg(bright_yellow).bg(background)),
159 |             border: Some(Style::default().fg(bright_black)),
160 |             border_active: Some(Style::default().fg(bright_yellow)),
161 |             selection: Some(Style::default().fg(background).bg(bright_yellow)),
162 |             selection_active: Some(Style::default().fg(background).bg(yellow)),
163 |             scrollbar: Some(Style::default().fg(bright_black)),
164 |         }
165 |     }
166 | 
167 |     pub fn focus() -> Self {
168 |         Self {
169 |             base: Style::default(),
170 |             overlay: Some(Style::default().reversed()),
171 |             status: None,
172 |             border: Some(Style::default().dim()),
173 |             border_active: Some(Style::default().bold()),
174 |             selection: Some(Style::default().reversed().dim()),
175 |             selection_active: Some(Style::default().reversed().bold()),
176 |             scrollbar: Some(Style::default()),
177 |         }
178 |     }
179 | 
180 |     pub fn jungle() -> Self {
181 |         Self {
182 |             base: Default::default(),
183 |             overlay: None,
184 |             status: None,
185 |             border: Some(Style::default().dim()),
186 |             border_active: Some(Style::default().green()),
187 |             selection: Some(Style::default().dim().reversed()),
188 |             selection_active: Some(Style::default().green().reversed()),
189 |             scrollbar: Some(Style::default().dim()),
190 |         }
191 |     }
192 | 
193 |     pub fn matrix() -> Self {
194 |         let bright_green = make_color("#49f27e");
195 |         let mid_green = make_color("#29ad53");
196 |         let dark_green = make_color("#04100a");
197 | 
198 |         Self {
199 |             base: Style::default().fg(bright_green).bg(dark_green),
200 |             overlay: None,
201 |             status: None,
202 |             border: Some(Style::default().fg(mid_green)),
203 |             border_active: Some(Style::default().fg(bright_green)),
204 |             selection: Some(Style::default().fg(dark_green).bg(mid_green)),
205 |             selection_active: Some(Style::default().fg(dark_green).bg(bright_green)),
206 |             scrollbar: Some(Style::default()),
207 |         }
208 |     }
209 | 
210 |     pub fn redshift() -> Self {
211 |         let red = make_color("#d22123");
212 |         let black = make_color("#161616");
213 | 
214 |         Self {
215 |             base: Style::default().fg(red).bg(black),
216 |             overlay: None,
217 |             status: None,
218 |             selection_active: Some(Style::default().fg(red).reversed()),
219 |             border_active: Some(Style::default().fg(red)),
220 |             selection: Some(Style::default().dim().reversed()),
221 |             border: Some(Style::default().dim()),
222 |             scrollbar: Some(Style::default().dim()),
223 |         }
224 |     }
225 | 
226 |     pub fn wyse() -> Self {
227 |         let bright_amber = make_color("#eaac1f");
228 |         let dark_amber = make_color("#936708");
229 |         let black = make_color("#231d17");
230 | 
231 |         Self {
232 |             base: Style::default().fg(bright_amber).bg(black),
233 |             overlay: None,
234 |             status: None,
235 |             border: Some(Style::default().fg(dark_amber)),
236 |             border_active: Some(Style::default().fg(bright_amber)),
237 |             selection: Some(Style::default().fg(black).bg(dark_amber)),
238 |             selection_active: Some(Style::default().fg(black).bg(bright_amber)),
239 |             scrollbar: Some(Style::default()),
240 |         }
241 |     }
242 | }
243 | 
244 | impl Default for Theme {
245 |     fn default() -> Self {
246 |         Self {
247 |             base: Style::default(),
248 |             overlay: None,
249 |             status: None,
250 |             selection_active: None,
251 |             selection: None,
252 |             border_active: None,
253 |             border: None,
254 |             scrollbar: Some(Style::default().dim()),
255 |         }
256 |     }
257 | }
258 | 
259 | impl FromStr for Theme {
260 |     type Err = ParseThemeError;
261 | 
262 |     fn from_str(s: &str) -> Result<Self, Self::Err> {
263 |         match s {
264 |             "default" => Ok(Self::default()),
265 |             "borland" => Ok(Self::borland()),
266 |             "darcula" => Ok(Self::darcula()),
267 |             "focus" => Ok(Self::focus()),
268 |             "jungle" => Ok(Self::jungle()),
269 |             "matrix" => Ok(Self::matrix()),
270 |             "redshift" => Ok(Self::redshift()),
271 |             "wyse" => Ok(Self::wyse()),
272 |             file => {
273 |                 if std::path::Path::new(file).exists() {
274 |                     let contents = std::fs::read_to_string(file).or(Err(ParseThemeError))?;
275 |                     let table = contents.parse::<Value>().or(Err(ParseThemeError))?;
276 |                     Self::try_from(&table).or(Err(ParseThemeError))
277 |                 } else {
278 |                     Err(ParseThemeError)
279 |                 }
280 |             }
281 |         }
282 |     }
283 | }
284 | 
285 | impl TryFrom<&toml::Value> for Theme {
286 |     type Error = ParseThemeError;
287 | 
288 |     fn try_from(value: &toml::Value) -> Result<Self, Self::Error> {
289 |         match value {
290 |             toml::Value::String(name) => match name.as_str() {
291 |                 "default" => Ok(Self::default()),
292 |                 "borland" => Ok(Self::borland()),
293 |                 "darcula" => Ok(Self::darcula()),
294 |                 "focus" => Ok(Self::focus()),
295 |                 "jungle" => Ok(Self::jungle()),
296 |                 "matrix" => Ok(Self::matrix()),
297 |                 "redshift" => Ok(Self::redshift()),
298 |                 "wyse" => Ok(Self::wyse()),
299 |                 file => {
300 |                     if std::path::Path::new(file).exists() {
301 |                         let contents = std::fs::read_to_string(file).or(Err(ParseThemeError))?;
302 |                         let table = contents.parse::<Value>().or(Err(ParseThemeError))?;
303 |                         Self::try_from(&table).or(Err(ParseThemeError))
304 |                     } else {
305 |                         Err(ParseThemeError)
306 |                     }
307 |                 }
308 |             },
309 |             toml::Value::Table(scheme) => Ok(Self {
310 |                 base: scheme
311 |                     .get("base")
312 |                     .and_then(|v| try_style_from_toml(v).ok())
313 |                     .unwrap_or_default(),
314 |                 overlay: scheme
315 |                     .get("overlay")
316 |                     .and_then(|v| try_style_from_toml(v).ok()),
317 |                 status: scheme
318 |                     .get("status")
319 |                     .and_then(|v| try_style_from_toml(v).ok()),
320 |                 selection: scheme
321 |                     .get("selection")
322 |                     .and_then(|v| try_style_from_toml(v).ok()),
323 |                 selection_active: scheme
324 |                     .get("selection_active")
325 |                     .and_then(|v| try_style_from_toml(v).ok()),
326 |                 border: scheme
327 |                     .get("border")
328 |                     .and_then(|v| try_style_from_toml(v).ok()),
329 |                 border_active: scheme
330 |                     .get("border_active")
331 |                     .and_then(|v| try_style_from_toml(v).ok()),
332 |                 scrollbar: scheme
333 |                     .get("scrollbar")
334 |                     .and_then(|v| try_style_from_toml(v).ok()),
335 |             }),
336 |             _ => Err(ParseThemeError),
337 |         }
338 |     }
339 | }
340 | 
341 | fn try_style_from_toml(value: &toml::Value) -> Result<Style, ParseColorError> {
342 |     match value {
343 |         toml::Value::String(name) => match name.to_lowercase().as_str() {
344 |             "black" => Ok(Style::default().black()),
345 |             "red" => Ok(Style::default().red()),
346 |             "green" => Ok(Style::default().green()),
347 |             "yellow" => Ok(Style::default().yellow()),
348 |             "blue" => Ok(Style::default().blue()),
349 |             "magenta" => Ok(Style::default().magenta()),
350 |             "cyan" => Ok(Style::default().cyan()),
351 |             "gray" => Ok(Style::default().gray()),
352 |             "lightblack" | "darkgray" => Ok(Style::default().dark_gray()),
353 |             "lightred" => Ok(Style::default().light_red()),
354 |             "lightgreen" => Ok(Style::default().light_green()),
355 |             "lightyellow" => Ok(Style::default().light_yellow()),
356 |             "lightblue" => Ok(Style::default().light_blue()),
357 |             "lightmagenta" => Ok(Style::default().light_magenta()),
358 |             "lightcyan" => Ok(Style::default().light_cyan()),
359 |             "white" => Ok(Style::default().white()),
360 |             hex if hex.starts_with('#') => Ok(Style::default().fg(make_color(hex))),
361 |             _ => Err(ParseColorError::InvalidFormat),
362 |         },
363 | 
364 |         toml::Value::Table(record) => {
365 |             let style = record
366 |                 .get("fg")
367 |                 .and_then(|v| try_style_from_toml(v).ok())
368 |                 .unwrap_or_default();
369 | 
370 |             if let Some(bg) = record.get("bg").and_then(|v| try_style_from_toml(v).ok()) {
371 |                 Ok(style.bg(bg.fg.unwrap()))
372 |             } else {
373 |                 Ok(style)
374 |             }
375 |         }
376 | 
377 |         _ => Err(ParseColorError::InvalidFormat),
378 |     }
379 | }
380 | 
381 | #[derive(Debug, PartialEq, Serialize, Deserialize)]
382 | pub struct ColorSchemeFile {
383 |     colors: Colors,
384 | }
385 | 
386 | #[derive(Debug, PartialEq, Serialize, Deserialize)]
387 | struct Colors {
388 |     name: Option<String>,
389 |     author: Option<String>,
390 |     primary: Option<PrimaryColors>,
391 |     cursor: Option<CursorColors>,
392 |     normal: Option<VariantColors>,
393 |     bright: Option<VariantColors>,
394 |     dim: Option<VariantColors>,
395 | }
396 | 
397 | #[derive(Debug, PartialEq, Serialize, Deserialize)]
398 | struct PrimaryColors {
399 |     foreground: Option<String>,
400 |     background: Option<String>,
401 |     bright_foreground: Option<String>,
402 |     dim_foreground: Option<String>,
403 | }
404 | 
405 | #[derive(Debug, PartialEq, Serialize, Deserialize)]
406 | struct CursorColors {
407 |     text: Option<String>,
408 |     cursor: Option<String>,
409 | }
410 | 
411 | #[derive(Debug, PartialEq, Serialize, Deserialize)]
412 | struct VariantColors {
413 |     black: Option<String>,
414 |     red: Option<String>,
415 |     green: Option<String>,
416 |     yellow: Option<String>,
417 |     blue: Option<String>,
418 |     magenta: Option<String>,
419 |     cyan: Option<String>,
420 |     white: Option<String>,
421 | }
422 | 


--------------------------------------------------------------------------------
/src/event.rs:
--------------------------------------------------------------------------------
 1 | use crate::app::AppResult;
 2 | use crossterm::event::{self, Event as CrosstermEvent, KeyEvent, MouseEvent};
 3 | use std::sync::mpsc;
 4 | use std::thread;
 5 | use std::time::{Duration, Instant};
 6 | 
 7 | /// Terminal events.
 8 | #[derive(Clone, Copy, Debug)]
 9 | pub enum Event {
10 |     /// Terminal tick.
11 |     Tick,
12 |     /// Key press.
13 |     Key(KeyEvent),
14 |     /// Mouse click/scroll.
15 |     Mouse(MouseEvent),
16 |     /// Terminal resize.
17 |     Resize(u16, u16),
18 | }
19 | 
20 | /// Terminal event handler.
21 | #[allow(dead_code)]
22 | #[derive(Debug)]
23 | pub struct EventHandler {
24 |     /// Event sender channel.
25 |     sender: mpsc::Sender<Event>,
26 |     /// Event receiver channel.
27 |     receiver: mpsc::Receiver<Event>,
28 |     /// Event handler thread.
29 |     handler: thread::JoinHandle<()>,
30 | }
31 | 
32 | impl EventHandler {
33 |     /// Constructs a new instance of [`EventHandler`].
34 |     pub fn new(tick_rate: u64) -> Self {
35 |         let tick_rate = Duration::from_millis(tick_rate);
36 |         let (sender, receiver) = mpsc::channel::<Event>();
37 |         let handler = {
38 |             let sender = sender.clone();
39 |             thread::spawn(move || {
40 |                 let mut last_tick = Instant::now();
41 |                 loop {
42 |                     let timeout = tick_rate
43 |                         .checked_sub(last_tick.elapsed())
44 |                         .unwrap_or(tick_rate);
45 | 
46 |                     if event::poll(timeout).expect("no events available") {
47 |                         match event::read().expect("unable to read event") {
48 |                             CrosstermEvent::Key(e) => sender.send(Event::Key(e)),
49 |                             CrosstermEvent::Mouse(e) => sender.send(Event::Mouse(e)),
50 |                             CrosstermEvent::Resize(w, h) => sender.send(Event::Resize(w, h)),
51 |                             CrosstermEvent::FocusLost => Ok(()),
52 |                             CrosstermEvent::FocusGained => Ok(()),
53 |                             _ => unimplemented!(),
54 |                         }
55 |                         .expect("failed to send terminal event")
56 |                     }
57 | 
58 |                     if last_tick.elapsed() >= tick_rate {
59 |                         sender.send(Event::Tick).expect("failed to send tick event");
60 |                         last_tick = Instant::now();
61 |                     }
62 |                 }
63 |             })
64 |         };
65 |         Self {
66 |             sender,
67 |             receiver,
68 |             handler,
69 |         }
70 |     }
71 | 
72 |     /// Receive the next event from the handler thread.
73 |     ///
74 |     /// This function will always block the current thread if
75 |     /// there is no data available and it's possible for more data to be sent.
76 |     pub fn next(&self) -> AppResult<Event> {
77 |         Ok(self.receiver.recv()?)
78 |     }
79 | }
80 | 


--------------------------------------------------------------------------------
/src/feed/html.rs:
--------------------------------------------------------------------------------
  1 | use anyhow::Result;
  2 | use html_escape::decode_html_entities as decode;
  3 | use html_parser::{Dom, DomVariant, Node};
  4 | 
  5 | pub enum HTMLParseError {
  6 |     NotParseable,
  7 |     NotStringifiable,
  8 | }
  9 | 
 10 | fn flatten_nodes(nodes: &Vec<Node>, trim: bool) -> String {
 11 |     let flat = nodes
 12 |         .iter()
 13 |         .filter_map(|node| match flatten_html(node) {
 14 |             Ok(Some(s)) => Some(s),
 15 |             Ok(None) => None,
 16 |             Err(_) => None,
 17 |         })
 18 |         .collect::<String>();
 19 | 
 20 |     if trim {
 21 |         flat.trim_start().to_owned()
 22 |     } else {
 23 |         flat
 24 |     }
 25 | }
 26 | 
 27 | fn flatten_html(node: &Node) -> Result<Option<String>, HTMLParseError> {
 28 |     match node {
 29 |         Node::Text(s) => Ok(Some(decode(s).into_owned())),
 30 |         Node::Comment(_) => Ok(None),
 31 |         Node::Element(el) => match el.name.as_str() {
 32 |             "h1" | "h2" | "h3" | "h4" | "h5" | "h6" => {
 33 |                 let hashes = el.name.chars().nth(1).unwrap().to_digit(10).unwrap();
 34 |                 let mut heading = "#".repeat(hashes as usize);
 35 |                 let parts = flatten_nodes(&el.children, true);
 36 |                 heading.push(' ');
 37 |                 heading.push_str(&parts);
 38 |                 heading.push_str("\n\n");
 39 |                 Ok(Some(heading))
 40 |             }
 41 |             "p" | "div" => {
 42 |                 let mut parts = flatten_nodes(&el.children, true);
 43 |                 parts.push_str("\n\n");
 44 |                 Ok(Some(parts))
 45 |             }
 46 |             "b" | "i" | "strong" | "em" | "small" | "span" | "pre" | "code" => {
 47 |                 let parts = flatten_nodes(&el.children, true);
 48 |                 Ok(Some(parts))
 49 |             }
 50 |             "ul" | "ol" => {
 51 |                 let mut text = String::from("\n");
 52 |                 let parts = flatten_nodes(&el.children, true);
 53 |                 text.push_str(&parts);
 54 |                 text.push_str("\n");
 55 |                 Ok(Some(parts))
 56 |             }
 57 |             "li" => {
 58 |                 let mut text = String::from("- ");
 59 |                 let parts = flatten_nodes(&el.children, true);
 60 |                 text.push_str(&parts);
 61 |                 text.push_str("\n");
 62 |                 Ok(Some(text))
 63 |             }
 64 |             "a" => {
 65 |                 let parts = flatten_nodes(&el.children, true);
 66 |                 if let Some(href) = el.attributes.get("href") {
 67 |                     Ok(Some(format!(
 68 |                         "{} ({})",
 69 |                         parts,
 70 |                         href.as_deref().unwrap_or_default()
 71 |                     )))
 72 |                 } else {
 73 |                     Ok(Some(parts))
 74 |                 }
 75 |             }
 76 |             // "img" => {
 77 |             //     if let Some(href) = el.attributes.get("src") {
 78 |             //         Ok(Some(
 79 |             //             format!("\n\n[image]({})\n\n", href.as_deref().unwrap_or_default()).into(),
 80 |             //         ))
 81 |             //     } else {
 82 |             //         Ok(None)
 83 |             //     }
 84 |             // }
 85 |             _ => Ok(None),
 86 |         },
 87 |     }
 88 | }
 89 | 
 90 | pub fn parse_html(content: &str) -> Result<String, HTMLParseError> {
 91 |     match Dom::parse(content) {
 92 |         Ok(dom) => match dom.tree_type {
 93 |             DomVariant::DocumentFragment => {
 94 |                 let text = dom
 95 |                     .children
 96 |                     .iter()
 97 |                     .filter_map(|node| match flatten_html(node) {
 98 |                         Ok(Some(s)) => Some(s),
 99 |                         Ok(None) => None,
100 |                         Err(_) => None,
101 |                     })
102 |                     .collect::<String>();
103 |                 Ok(text)
104 |             }
105 |             _ => Err(HTMLParseError::NotStringifiable),
106 |         },
107 |         Err(_) => Err(HTMLParseError::NotParseable),
108 |     }
109 | }
110 | 


--------------------------------------------------------------------------------
/src/feed/mod.rs:
--------------------------------------------------------------------------------
  1 | use anyhow;
  2 | use chrono::prelude::*;
  3 | use rss::{Channel, Item as ChannelItem};
  4 | use serde::{Deserialize, Serialize};
  5 | use std::io::BufRead;
  6 | 
  7 | mod html;
  8 | 
  9 | #[derive(Clone, Debug, Serialize, Deserialize)]
 10 | pub struct Feed {
 11 |     pub(crate) id: String,
 12 |     pub(crate) title: String,
 13 |     pub(crate) description: String,
 14 |     pub(crate) categories: Vec<Category>,
 15 |     pub(crate) url: String,
 16 |     pub(crate) link: String,
 17 |     pub(crate) ttl: Option<String>,
 18 |     #[serde(skip)]
 19 |     pub(crate) items: Vec<Item>,
 20 |     pub(crate) pub_date: Option<String>,
 21 |     pub(crate) last_fetched: Option<String>,
 22 | }
 23 | 
 24 | impl Feed {
 25 |     pub fn id(&self) -> &str {
 26 |         &self.id
 27 |     }
 28 | 
 29 |     pub fn title(&self) -> &str {
 30 |         &self.title
 31 |     }
 32 | 
 33 |     pub fn description(&self) -> &str {
 34 |         &self.description
 35 |     }
 36 | 
 37 |     pub fn categories(&self) -> &[Category] {
 38 |         &self.categories
 39 |     }
 40 | 
 41 |     pub fn url(&self) -> &str {
 42 |         &self.url
 43 |     }
 44 | 
 45 |     pub fn link(&self) -> &str {
 46 |         &self.link
 47 |     }
 48 | 
 49 |     pub fn ttl(&self) -> Option<&str> {
 50 |         self.ttl.as_deref()
 51 |     }
 52 | 
 53 |     pub fn items(&self) -> &[Item] {
 54 |         &self.items
 55 |     }
 56 | 
 57 |     pub fn pub_date(&self) -> Option<&str> {
 58 |         self.pub_date.as_deref()
 59 |     }
 60 | 
 61 |     pub fn last_fetched(&self) -> Option<&str> {
 62 |         self.last_fetched.as_deref()
 63 |     }
 64 | 
 65 |     pub fn with_items(mut self, items: Vec<Item>) -> Self {
 66 |         self.items = items;
 67 |         self
 68 |     }
 69 | 
 70 |     fn from_channel_with_url(value: Channel, url: String) -> Self {
 71 |         let id = value
 72 |             .dublin_core_ext()
 73 |             .and_then(|dc| {
 74 |                 if !dc.identifiers().is_empty() {
 75 |                     Some(dc.identifiers().concat())
 76 |                 } else {
 77 |                     None
 78 |                 }
 79 |             })
 80 |             .unwrap_or(value.link().to_owned());
 81 | 
 82 |         Self {
 83 |             title: value.title.clone(),
 84 |             description: value.description.clone(),
 85 |             url: url,
 86 |             link: value.link.clone(),
 87 |             ttl: value.ttl.clone(),
 88 |             categories: value
 89 |                 .categories
 90 |                 .iter()
 91 |                 .map(|c| Category {
 92 |                     name: c.name.clone(),
 93 |                     domain: c.domain.clone(),
 94 |                 })
 95 |                 .collect(),
 96 |             items: value
 97 |                 .items
 98 |                 .iter()
 99 |                 .map(|i| Item::with_parent(id.as_str(), i))
100 |                 .collect(),
101 |             pub_date: value
102 |                 .pub_date
103 |                 .and_then(|s| DateTime::parse_from_rfc2822(&s).ok())
104 |                 .and_then(|s| Some(DateTime::to_rfc2822(&s))),
105 |             last_fetched: None,
106 |             id,
107 |         }
108 |     }
109 | 
110 |     pub fn read_from<R: BufRead>(reader: R, url: String) -> anyhow::Result<Feed> {
111 |         let channel = Channel::read_from(reader)?;
112 |         let mut feed = Feed::from_channel_with_url(channel, url);
113 |         feed.last_fetched = Some(Local::now().to_rfc2822());
114 |         Ok(feed)
115 |     }
116 | }
117 | 
118 | #[derive(Clone, Default, Debug, Serialize, Deserialize)]
119 | pub struct Item {
120 |     pub(crate) id: String,
121 |     pub(crate) feed_id: String,
122 |     pub(crate) title: Option<String>,
123 |     pub(crate) author: Option<String>,
124 |     pub(crate) content: Option<String>,
125 |     pub(crate) description: Option<String>,
126 |     pub(crate) text_description: Option<String>,
127 |     pub(crate) categories: Vec<Category>,
128 |     pub(crate) link: Option<String>,
129 |     pub(crate) pub_date: Option<String>,
130 | }
131 | 
132 | impl Item {
133 |     pub fn id(&self) -> &str {
134 |         &self.id
135 |     }
136 | 
137 |     pub fn feed_id(&self) -> &str {
138 |         &self.feed_id
139 |     }
140 | 
141 |     pub fn title(&self) -> Option<&str> {
142 |         self.title.as_deref()
143 |     }
144 | 
145 |     pub fn author(&self) -> Option<&str> {
146 |         self.author.as_deref()
147 |     }
148 | 
149 |     pub fn content(&self) -> Option<&str> {
150 |         self.content.as_deref()
151 |     }
152 | 
153 |     pub fn description(&self) -> Option<&str> {
154 |         if self.text_description.is_some() {
155 |             self.text_description.as_deref()
156 |         } else {
157 |             self.description.as_deref()
158 |         }
159 |     }
160 | 
161 |     pub fn categories(&self) -> &[Category] {
162 |         &self.categories
163 |     }
164 | 
165 |     pub fn link(&self) -> Option<&str> {
166 |         self.link.as_deref()
167 |     }
168 | 
169 |     pub fn pub_date(&self) -> Option<&str> {
170 |         self.pub_date.as_deref()
171 |     }
172 | 
173 |     fn with_parent(feed_id: &str, value: &ChannelItem) -> Self {
174 |         let id = value
175 |             .guid()
176 |             .and_then(|g| {
177 |                 if g.is_permalink() {
178 |                     Some(g.value.clone())
179 |                 } else {
180 |                     None
181 |                 }
182 |             })
183 |             .or(value.dublin_core_ext().and_then(|dc| {
184 |                 if !dc.identifiers().is_empty() {
185 |                     Some(dc.identifiers().concat())
186 |                 } else {
187 |                     None
188 |                 }
189 |             }))
190 |             .unwrap_or(format!(
191 |                 "{}:{}",
192 |                 feed_id,
193 |                 value.link().unwrap_or(
194 |                     value
195 |                         .title()
196 |                         .expect("Holy cow there is nothing to identify this post item at all")
197 |                 )
198 |             ));
199 | 
200 |         let author = value
201 |             .author()
202 |             .and_then(|s| Some(s.to_owned()))
203 |             .or(value
204 |                 .itunes_ext()
205 |                 .and_then(|it| it.author().and_then(|auth| Some(auth.to_owned()))))
206 |             .or(value.dublin_core_ext().and_then(|dc| {
207 |                 let creators = dc.creators().join(", ");
208 |                 if creators.is_empty() {
209 |                     None
210 |                 } else {
211 |                     Some(creators)
212 |                 }
213 |             }));
214 | 
215 |         let text_description = if let Some(d) = value.description() {
216 |             html::parse_html(&d).ok()
217 |         } else {
218 |             None
219 |         };
220 | 
221 |         Self {
222 |             id,
223 |             feed_id: feed_id.to_owned(),
224 |             title: value.title.clone(),
225 |             author,
226 |             content: value.content.clone(),
227 |             description: value.description.clone(),
228 |             text_description,
229 |             categories: value
230 |                 .categories
231 |                 .iter()
232 |                 .map(|c| Category {
233 |                     name: c.name.clone(),
234 |                     domain: c.domain.clone(),
235 |                 })
236 |                 .collect(),
237 |             link: value.link.clone(),
238 |             pub_date: value.pub_date.clone(),
239 |         }
240 |     }
241 | }
242 | 
243 | // impl From<&ChannelItem> for Item {
244 | //     fn from(value: &ChannelItem) -> Self {
245 | //         let author = value
246 | //             .author()
247 | //             .and_then(|s| Some(s.to_owned()))
248 | //             .or(value
249 | //                 .itunes_ext()
250 | //                 .and_then(|it| it.author().and_then(|auth| Some(auth.to_owned()))))
251 | //             .or(value.dublin_core_ext().and_then(|dc| {
252 | //                 let creators = dc.creators().join(", ");
253 | //                 if creators.is_empty() {
254 | //                     None
255 | //                 } else {
256 | //                     Some(creators)
257 | //                 }
258 | //             }));
259 | 
260 | //         let text_description = if let Some(d) = value.description() {
261 | //             html::parse_html(&d).ok()
262 | //         } else {
263 | //             None
264 | //         };
265 | 
266 | //         Self {
267 | //             title: value.title.clone(),
268 | //             author,
269 | //             content: value.content.clone(),
270 | //             text_content: None,
271 | //             description: value.description.clone(),
272 | //             text_description,
273 | //             categories: value
274 | //                 .categories
275 | //                 .iter()
276 | //                 .map(|c| Category {
277 | //                     name: c.name.clone(),
278 | //                     domain: c.domain.clone(),
279 | //                 })
280 | //                 .collect(),
281 | //             link: value.link.clone(),
282 | //             pub_date: value.pub_date.clone(),
283 | //         }
284 | //     }
285 | // }
286 | 
287 | #[derive(Clone, Debug, Serialize, Deserialize)]
288 | pub struct Category {
289 |     pub name: String,
290 |     pub domain: Option<String>,
291 | }
292 | 


--------------------------------------------------------------------------------
/src/handler.rs:
--------------------------------------------------------------------------------
  1 | use crate::app::{App, AppResult};
  2 | use crossterm::event::{
  3 |     KeyCode, KeyEvent, KeyEventKind, KeyModifiers, MouseButton, MouseEvent, MouseEventKind,
  4 | };
  5 | 
  6 | /// Handles the key events and updates the state of [`App`].
  7 | pub fn handle_key_events(key_event: KeyEvent, app: &mut App) -> AppResult<()> {
  8 |     if cfg!(target_os = "windows") {
  9 |         match key_event.kind {
 10 |             KeyEventKind::Press => {}
 11 |             _ => return Ok(()),
 12 |         }
 13 |     }
 14 | 
 15 |     if app.should_render_console() {
 16 |         match key_event.code {
 17 |             KeyCode::Char('c') | KeyCode::Char('C')
 18 |                 if key_event.modifiers == KeyModifiers::CONTROL =>
 19 |             {
 20 |                 app.quit();
 21 |             }
 22 |             KeyCode::Enter => app.submit_command(),
 23 |             KeyCode::Char(to_insert) => {
 24 |                 app.enter_char(to_insert);
 25 |             }
 26 |             KeyCode::Backspace => {
 27 |                 app.delete_char();
 28 |             }
 29 |             KeyCode::Left => {
 30 |                 app.move_cursor_left();
 31 |             }
 32 |             KeyCode::Right => {
 33 |                 app.move_cursor_right();
 34 |             }
 35 |             KeyCode::Esc => {
 36 |                 app.toggle_console(None);
 37 |             }
 38 |             _ => {}
 39 |         }
 40 |         return Ok(());
 41 |     }
 42 | 
 43 |     if app.show_keybinds {
 44 |         match key_event.code {
 45 |             // Exit application on `q`
 46 |             KeyCode::Char('q') | KeyCode::Char('Q') => {
 47 |                 app.quit();
 48 |             }
 49 |             _ => {
 50 |                 app.toggle_keybinds();
 51 |                 return Ok(());
 52 |             }
 53 |         }
 54 |     }
 55 | 
 56 |     match key_event.code {
 57 |         // Exit application on `q`
 58 |         KeyCode::Char('q') | KeyCode::Char('Q') => {
 59 |             app.quit();
 60 |         }
 61 |         // Exit application on `Ctrl-C`
 62 |         KeyCode::Char('c') | KeyCode::Char('C') if key_event.modifiers == KeyModifiers::CONTROL => {
 63 |             app.quit();
 64 |         }
 65 |         // Navigation handlers
 66 |         KeyCode::Down | KeyCode::Char('j') => {
 67 |             app.next();
 68 |         }
 69 |         KeyCode::Up | KeyCode::Char('k') => {
 70 |             app.prev();
 71 |         }
 72 |         KeyCode::Right | KeyCode::Enter | KeyCode::Char('l') => {
 73 |             app.next_view(false);
 74 |         }
 75 |         KeyCode::Left | KeyCode::Char('h') => {
 76 |             app.prev_view(false);
 77 |         }
 78 |         KeyCode::Tab => {
 79 |             app.next_tab();
 80 |         }
 81 |         KeyCode::BackTab => {
 82 |             app.prev_tab();
 83 |         }
 84 |         KeyCode::Char('b') => app.set_tab(0),
 85 |         KeyCode::Char('f') => app.set_tab(1),
 86 |         KeyCode::Char('t') => app.set_tab(2),
 87 |         // Other handlers you could add here.
 88 |         KeyCode::Esc => {
 89 |             app.unselect();
 90 |         }
 91 |         KeyCode::Char('a') => {
 92 |             app.toggle_console(Some(":add "));
 93 |         }
 94 |         KeyCode::Char('d') => {
 95 |             app.toggle_console(Some(":delete "));
 96 |         }
 97 |         KeyCode::Char('/') => {
 98 |             app.toggle_console(Some(":search "));
 99 |         }
100 |         KeyCode::Char(':') => {
101 |             app.toggle_console(Some(":"));
102 |         }
103 |         KeyCode::Char('o') => {
104 |             app.open();
105 |         }
106 |         KeyCode::Char('r') => {
107 |             app.refresh_all();
108 |         }
109 |         KeyCode::Char('?') => {
110 |             app.toggle_keybinds();
111 |         }
112 |         KeyCode::Char(',') => {
113 |             app.open_config();
114 |         }
115 |         _ => {}
116 |     }
117 |     Ok(())
118 | }
119 | 
120 | pub fn handle_mouse_events(mouse_event: MouseEvent, app: &mut App) -> AppResult<()> {
121 |     match mouse_event.kind {
122 |         MouseEventKind::ScrollDown => {
123 |             app.next();
124 |         }
125 |         MouseEventKind::ScrollUp => {
126 |             app.prev();
127 |         }
128 |         MouseEventKind::ScrollRight | MouseEventKind::Down(MouseButton::Left) => {
129 |             app.next_view(false);
130 |         }
131 |         MouseEventKind::ScrollLeft | MouseEventKind::Down(MouseButton::Right) => {
132 |             app.prev_view(false);
133 |         }
134 |         _ => {}
135 |     }
136 |     Ok(())
137 | }
138 | 
139 | pub fn handle_resize_events(dimensions: (u16, u16), app: &mut App) -> AppResult<()> {
140 |     app.set_dimensions(dimensions);
141 |     Ok(())
142 | }
143 | 


--------------------------------------------------------------------------------
/src/lib.rs:
--------------------------------------------------------------------------------
 1 | pub mod app;
 2 | pub mod config;
 3 | pub mod repo;
 4 | pub mod event;
 5 | pub mod feed;
 6 | pub mod handler;
 7 | pub mod tui;
 8 | pub mod ui;
 9 | pub mod util;
10 | 


--------------------------------------------------------------------------------
/src/main.rs:
--------------------------------------------------------------------------------
 1 | use crossterm::terminal;
 2 | use moccasin::app::{App, AppResult};
 3 | use moccasin::event::{Event, EventHandler};
 4 | use moccasin::handler::{handle_key_events, handle_mouse_events, handle_resize_events};
 5 | use moccasin::tui::Tui;
 6 | use std::io;
 7 | use tui::backend::CrosstermBackend;
 8 | use tui::Terminal;
 9 | 
10 | #[tokio::main]
11 | async fn main() -> AppResult<()> {
12 |     // Create an application.
13 |     let mut app = App::init(terminal::size().unwrap())?;
14 | 
15 |     // Initialize the terminal user interface.
16 |     let backend = CrosstermBackend::new(io::stderr());
17 |     let terminal = Terminal::new(backend)?;
18 |     let events = EventHandler::new(250);
19 |     let mut tui = Tui::new(terminal, events);
20 |     tui.init()?;
21 | 
22 |     // Start the main loop.
23 |     while app.running {
24 |         // Render the user interface.
25 |         tui.draw(&mut app)?;
26 |         // Handle events.
27 |         match tui.events.next()? {
28 |             Event::Tick => app.tick(),
29 |             Event::Key(key_event) => handle_key_events(key_event, &mut app)?,
30 |             Event::Mouse(mouse_event) => handle_mouse_events(mouse_event, &mut app)?,
31 |             Event::Resize(w, h) => handle_resize_events((w, h), &mut app)?,
32 |         }
33 |     }
34 | 
35 |     // Exit the user interface.
36 |     tui.exit()?;
37 |     Ok(())
38 | }
39 | 


--------------------------------------------------------------------------------
/src/repo/mod.rs:
--------------------------------------------------------------------------------
 1 | pub mod storage;
 2 | mod repo;
 3 | 
 4 | use crate::feed::Feed;
 5 | pub use repo::Repository;
 6 | 
 7 | #[derive(Clone, Debug)]
 8 | pub enum RepositoryEvent {
 9 |     Refresh,
10 |     RetrievedAll(Vec<Feed>),
11 |     RetrievedOne(Feed),
12 |     Requesting(usize),
13 |     Requested((usize, usize)),
14 |     Errored,
15 |     Aborted,
16 | }
17 | 


--------------------------------------------------------------------------------
/src/repo/repo.rs:
--------------------------------------------------------------------------------
  1 | use super::RepositoryEvent;
  2 | use super::storage::sqlite::SQLiteStorage;
  3 | use crate::config::Config;
  4 | use crate::feed::Feed;
  5 | use crate::repo::storage::{StorageError, StorageEvent};
  6 | use crate::report;
  7 | use crate::util::sort_feeds;
  8 | use anyhow::Result;
  9 | use std::fmt::Debug;
 10 | use std::task::Poll;
 11 | use std::thread;
 12 | use std::time::Duration;
 13 | use tokio::{
 14 |     sync::mpsc::{self, UnboundedSender},
 15 |     task::JoinHandle,
 16 | };
 17 | 
 18 | #[derive(Debug)]
 19 | enum FetchErr {
 20 |     Request,
 21 |     Deserialize,
 22 |     Parse,
 23 | }
 24 | 
 25 | pub struct Repository {
 26 |     storage: SQLiteStorage,
 27 |     app_tx: mpsc::UnboundedSender<RepositoryEvent>,
 28 |     storage_tx: mpsc::UnboundedSender<RepositoryEvent>,
 29 |     storage_rx: mpsc::UnboundedReceiver<RepositoryEvent>,
 30 |     handle_one: Option<JoinHandle<()>>,
 31 |     handle_many: Option<JoinHandle<()>>,
 32 | }
 33 | 
 34 | impl Debug for Repository {
 35 |     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 36 |         f.write_str("Database {}")
 37 |     }
 38 | }
 39 | 
 40 | impl Repository {
 41 |     pub fn init(config: &Config, app_tx: UnboundedSender<RepositoryEvent>) -> Result<Self> {
 42 |         let storage = SQLiteStorage::init(config);
 43 | 
 44 |         let (storage_tx, storage_rx) = mpsc::unbounded_channel::<RepositoryEvent>();
 45 | 
 46 |         if config.refresh_interval() > 0 {
 47 |             let tick_rate = Duration::from_secs(config.refresh_interval());
 48 |             let tx = storage_tx.clone();
 49 |             thread::spawn(move || loop {
 50 |                 tx.send(RepositoryEvent::Refresh)
 51 |                     .expect("Failed to send storage message");
 52 |                 thread::sleep(tick_rate);
 53 |             });
 54 |         }
 55 | 
 56 |         Ok(Self {
 57 |             storage,
 58 |             app_tx,
 59 |             storage_tx,
 60 |             storage_rx,
 61 |             handle_one: None,
 62 |             handle_many: None,
 63 |         })
 64 |     }
 65 | 
 66 |     pub fn tick(&mut self, config: &Config) {
 67 |         let waker = futures::task::noop_waker();
 68 |         let mut cx = std::task::Context::from_waker(&waker);
 69 | 
 70 |         match self.storage_rx.poll_recv(&mut cx) {
 71 |             Poll::Ready(m) => match m {
 72 |                 Some(RepositoryEvent::RetrievedAll(feeds)) => {
 73 |                     report!(self.storage.write_feeds(&feeds), "Failed to write feeds");
 74 |                     self.app_tx
 75 |                         .send(RepositoryEvent::RetrievedAll(feeds))
 76 |                         .expect("Failed to send app message");
 77 |                     self.handle_many = None;
 78 |                 }
 79 |                 Some(RepositoryEvent::RetrievedOne(feed)) => {
 80 |                     report!(self.storage.write_feed(&feed, None), "Failed to write feed");
 81 |                     self.app_tx
 82 |                         .send(RepositoryEvent::RetrievedOne(feed))
 83 |                         .expect("Failed to send app message");
 84 |                     self.handle_one = None;
 85 |                 }
 86 |                 Some(RepositoryEvent::Refresh) => {
 87 |                     self.refresh_all(config);
 88 |                 }
 89 |                 Some(_) => {}
 90 |                 None => {}
 91 |             },
 92 |             Poll::Pending => {}
 93 |         }
 94 |     }
 95 | 
 96 |     pub fn read_all(&mut self, config: &Config) -> Result<Vec<Feed>, StorageError> {
 97 |         let res = self.storage.read_all(config);
 98 |         report!(res, "Failed to read from DB");
 99 |         res
100 |     }
101 | 
102 |     pub fn add_feed_url(&mut self, url: &str, config: &Config) {
103 |         let app_tx = self.app_tx.clone();
104 |         if let Some(handle) = &self.handle_one {
105 |             handle.abort();
106 |             app_tx
107 |                 .send(RepositoryEvent::Aborted)
108 |                 .expect("Failed to send app event");
109 |             self.handle_one = None;
110 |         }
111 | 
112 |         let url = url.to_owned();
113 |         let interval = config.refresh_timeout();
114 |         let storage_tx = self.storage_tx.clone();
115 | 
116 |         app_tx
117 |             .send(RepositoryEvent::Requesting(1))
118 |             .expect("Failed to send app event");
119 | 
120 |         self.handle_one = Some(tokio::spawn(async move {
121 |             let client = reqwest::Client::builder()
122 |                 .connect_timeout(Duration::from_secs(interval))
123 |                 .timeout(Duration::from_secs(interval))
124 |                 .build()
125 |                 .expect("failed to build client");
126 | 
127 |             match make_feed_request(client.get(url).send()).await {
128 |                 Ok(feed) => {
129 |                     app_tx
130 |                         .send(RepositoryEvent::Requested((1, 1)))
131 |                         .expect("Failed to send app event");
132 |                     storage_tx
133 |                         .send(RepositoryEvent::RetrievedOne(feed))
134 |                         .expect("Failed to send app event");
135 |                 }
136 |                 Err(_) => {
137 |                     app_tx
138 |                         .send(RepositoryEvent::Errored)
139 |                         .expect("Failed to make feed request");
140 |                 }
141 |             }
142 |         }));
143 |     }
144 | 
145 |     pub fn remove_feed_url(&mut self, url: &str) -> Result<StorageEvent, StorageError> {
146 |         self.storage.delete_feed_with_url(url)
147 |     }
148 | 
149 |     pub fn refresh_all(&mut self, config: &Config) {
150 |         let app_tx = self.app_tx.clone();
151 |         if let Some(handle) = &self.handle_many {
152 |             handle.abort();
153 |             app_tx
154 |                 .send(RepositoryEvent::Aborted)
155 |                 .expect("Failed to send abort message");
156 |             self.handle_many = None;
157 |         }
158 | 
159 |         let storage_tx = self.storage_tx.clone();
160 |         let config: Config = config.clone();
161 |         let urls = config.feed_urls().clone();
162 |         let count = urls.len();
163 | 
164 |         app_tx
165 |             .send(RepositoryEvent::Requesting(count))
166 |             .expect("Could not send app message");
167 | 
168 |         self.handle_many = Some(tokio::spawn(async move {
169 |             let client = reqwest::Client::builder()
170 |                 .connect_timeout(Duration::from_secs(config.refresh_timeout()))
171 |                 .timeout(Duration::from_secs(config.refresh_timeout()))
172 |                 .build()
173 |                 .expect("Failed to build client");
174 |             let futures: Vec<_> = urls.into_iter().map(|url| client.get(url).send()).collect();
175 |             let handles: Vec<_> = futures
176 |                 .into_iter()
177 |                 .enumerate()
178 |                 .map(|(n, req)| {
179 |                     let app_tx = app_tx.clone();
180 |                     tokio::task::spawn(async move {
181 |                         let res = make_feed_request(req).await;
182 |                         app_tx
183 |                             .send(RepositoryEvent::Requested((n, count)))
184 |                             .expect("Failed to send app message");
185 |                         res
186 |                     })
187 |                 })
188 |                 .collect();
189 |             let results = futures::future::join_all(handles).await;
190 |             let mut feeds: Vec<Feed> = results
191 |                 .into_iter()
192 |                 .filter_map(|handle| match handle {
193 |                     Ok(res) => match res {
194 |                         Ok(feed) => Some(feed),
195 |                         _ => None,
196 |                     },
197 |                     _ => None,
198 |                 })
199 |                 .collect();
200 | 
201 |             sort_feeds(&mut feeds, &config);
202 |             storage_tx
203 |                 .send(RepositoryEvent::RetrievedAll(feeds))
204 |                 .expect("Failed to send storage message");
205 |         }));
206 |     }
207 | }
208 | 
209 | async fn make_feed_request(
210 |     req: impl std::future::Future<Output = Result<reqwest::Response, reqwest::Error>>,
211 | ) -> Result<Feed, FetchErr> {
212 |     match req.await {
213 |         Ok(res) => {
214 |             let url = res.url().to_string();
215 |             match &res.bytes().await {
216 |                 Ok(bytes) => match Feed::read_from(&bytes[..], url) {
217 |                     Ok(feed) => Ok(feed),
218 |                     Err(_) => Err(FetchErr::Parse),
219 |                 },
220 |                 Err(_) => Err(FetchErr::Deserialize),
221 |             }
222 |         }
223 |         Err(_) => Err(FetchErr::Request),
224 |     }
225 | }
226 | 


--------------------------------------------------------------------------------
/src/repo/storage/mod.rs:
--------------------------------------------------------------------------------
 1 | pub mod sqlite;
 2 | 
 3 | pub enum StorageEvent {
 4 |     Insert,
 5 |     Update,
 6 |     Delete,
 7 |     NoOp,
 8 | }
 9 | 
10 | pub struct StorageError;
11 | 


--------------------------------------------------------------------------------
/src/repo/storage/schema.sql:
--------------------------------------------------------------------------------
 1 | BEGIN;
 2 | CREATE TABLE IF NOT EXISTS feeds (
 3 |     id TEXT NOT NULL PRIMARY KEY,
 4 |     title TEXT NOT NULL,
 5 |     description TEXT NOT NULL,
 6 |     categories TEXT NOT NULL,
 7 |     url TEXT NOT NULL,
 8 |     link TEXT NOT NULL,
 9 |     ttl TEXT,
10 |     pub_date TEXT,
11 |     last_fetched TEXT
12 | );
13 | CREATE TABLE IF NOT EXISTS items (
14 |     id TEXT NOT NULL PRIMARY KEY,
15 |     feed_id TEXT NOT NULL,
16 |     title TEXT,
17 |     author TEXT,
18 |     content TEXT,
19 |     description TEXT,
20 |     text_description TEXT,
21 |     categories TEXT,
22 |     link TEXT,
23 |     pub_date TEXT,
24 |     FOREIGN KEY(feed_id) REFERENCES feeds(id) ON DELETE CASCADE
25 | );
26 | END;


--------------------------------------------------------------------------------
/src/repo/storage/sqlite.rs:
--------------------------------------------------------------------------------
  1 | use super::{StorageError, StorageEvent};
  2 | use crate::config::Config;
  3 | use crate::feed::{Feed, Item};
  4 | use crate::util;
  5 | use rusqlite::{Connection, Result, Row, Transaction};
  6 | 
  7 | pub struct SQLiteStorage {
  8 |     conn: Connection,
  9 | }
 10 | 
 11 | trait FromRow<'stmt> {
 12 |     fn from_row(row: &'stmt Row) -> Self;
 13 | }
 14 | 
 15 | impl<'stmt> FromRow<'stmt> for Feed {
 16 |     fn from_row(row: &'stmt Row) -> Feed {
 17 |         Feed {
 18 |             id: row.get(0).unwrap(),
 19 |             title: row.get(1).unwrap(),
 20 |             description: row.get(2).unwrap(),
 21 |             categories: vec![],
 22 |             url: row.get(4).unwrap(),
 23 |             link: row.get(5).unwrap(),
 24 |             ttl: row.get(6).ok(),
 25 |             items: vec![],
 26 |             pub_date: row.get(7).ok(),
 27 |             last_fetched: row.get(8).ok(),
 28 |         }
 29 |     }
 30 | }
 31 | 
 32 | impl<'stmt> Item {
 33 |     fn from_row(row: &'stmt Row, feed_id: &str) -> Self {
 34 |         Item {
 35 |             id: row.get(0).unwrap(),
 36 |             feed_id: feed_id.into(),
 37 |             title: row.get(2).ok(),
 38 |             author: row.get(3).ok(),
 39 |             content: row.get(4).ok(),
 40 |             description: row.get(5).ok(),
 41 |             text_description: row.get(6).ok(),
 42 |             categories: vec![], // FIXME
 43 |             link: row.get(8).ok(),
 44 |             pub_date: row.get(9).ok(),
 45 |         }
 46 |     }
 47 | }
 48 | 
 49 | impl SQLiteStorage {
 50 |     pub fn write_feed_tx(
 51 |         &self,
 52 |         feed: &Feed,
 53 |         tx: &Transaction,
 54 |     ) -> Result<StorageEvent, StorageError> {
 55 |         let stmt = "INSERT OR REPLACE INTO feeds(
 56 |             id,
 57 |             title,
 58 |             description,
 59 |             categories,
 60 |             url,
 61 |             link,
 62 |             ttl,
 63 |             pub_date,
 64 |             last_fetched
 65 |         ) VALUES(
 66 |             IFNULL((SELECT id FROM feeds WHERE id = ?1), ?1),
 67 |             ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9
 68 |         )";
 69 | 
 70 |         let mut stmt = tx.prepare_cached(stmt).map_err(|err| {
 71 |             log::warn!("{:?}", err);
 72 |             StorageError
 73 |         })?;
 74 | 
 75 |         match stmt.execute([
 76 |             feed.id(),
 77 |             feed.title(),
 78 |             feed.description(),
 79 |             "[]",
 80 |             feed.url(),
 81 |             feed.link(),
 82 |             feed.ttl().unwrap_or("NULL"),
 83 |             feed.pub_date().unwrap_or("NULL"),
 84 |             feed.last_fetched().unwrap_or("NULL"),
 85 |         ]) {
 86 |             Ok(_) => {
 87 |                 for item in feed.items() {
 88 |                     self.write_item(item)?;
 89 |                 }
 90 | 
 91 |                 Ok(StorageEvent::Insert)
 92 |             }
 93 |             Err(err) => {
 94 |                 log::error!("{:?}", err);
 95 |                 Err(StorageError)
 96 |             }
 97 |         }
 98 |     }
 99 | }
100 | 
101 | impl SQLiteStorage {
102 |     pub fn init(config: &Config) -> Self {
103 |         let conn = if config.should_cache() {
104 |             Connection::open(config.db_path()).expect("Could not open database")
105 |         } else {
106 |             Connection::open_in_memory().expect("Could not open database")
107 |         };
108 | 
109 |         conn.execute_batch(include_str!("schema.sql"))
110 |             .expect("Failed to initialize DB schema");
111 | 
112 |         Self { conn }
113 |     }
114 | 
115 |     pub fn read_all(&mut self, config: &Config) -> Result<Vec<Feed>, StorageError> {
116 |         let stmt = "SELECT * FROM feeds";
117 |         let mut stmt = self.conn.prepare_cached(stmt).map_err(|_| StorageError)?;
118 | 
119 |         let feeds_iter = stmt.query_map([], |row| {
120 |             let mut feed = Feed::from_row(row);
121 |             match self.read_items_for_feed_id(feed.id()) {
122 |                 Ok(items) => feed.items = items,
123 |                 Err(_) => {
124 |                     log::error!("Failed to fetch items for feed {}", feed.id());
125 |                 }
126 |             }
127 |             Ok(feed)
128 |         });
129 |         let mut feeds = feeds_iter
130 |             .expect("Could not unwrap feeds")
131 |             .filter_map(|r| r.ok())
132 |             .collect::<Vec<_>>();
133 | 
134 |         util::sort_feeds(&mut feeds, config);
135 |         Ok(feeds)
136 |     }
137 | 
138 |     pub fn read_items_for_feed_id(&self, id: &str) -> Result<Vec<Item>, StorageError> {
139 |         let stmt = "SELECT * FROM items WHERE feed_id = ?1";
140 |         let mut stmt = self.conn.prepare_cached(stmt).map_err(|_| StorageError)?;
141 | 
142 |         let items_iter = stmt.query_map([id], |r| Ok(Item::from_row(r, id)));
143 |         let items = items_iter
144 |             .expect("Could not unwrap items")
145 |             .filter_map(|r| r.ok())
146 |             .collect::<Vec<_>>();
147 | 
148 |         Ok(items)
149 |     }
150 | 
151 |     pub fn write_feed(
152 |         &self,
153 |         feed: &Feed,
154 |         tx: Option<&Transaction>,
155 |     ) -> Result<StorageEvent, StorageError> {
156 |         let stmt = "INSERT OR REPLACE INTO feeds(
157 |             id,
158 |             title,
159 |             description,
160 |             categories,
161 |             url,
162 |             link,
163 |             ttl,
164 |             pub_date,
165 |             last_fetched
166 |         ) VALUES(
167 |             IFNULL((SELECT id FROM feeds WHERE id = ?1), ?1),
168 |             ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9
169 |         )";
170 | 
171 |         let mut stmt = (if let Some(tx) = tx {
172 |             tx.prepare_cached(stmt)
173 |         } else {
174 |             self.conn.prepare_cached(stmt)
175 |         })
176 |         .map_err(|err| {
177 |             log::warn!("{:?}", err);
178 |             StorageError
179 |         })?;
180 | 
181 |         match stmt.execute([
182 |             feed.id(),
183 |             feed.title(),
184 |             feed.description(),
185 |             "[]",
186 |             feed.url(),
187 |             feed.link(),
188 |             feed.ttl().unwrap_or("NULL"),
189 |             feed.pub_date().unwrap_or("NULL"),
190 |             feed.last_fetched().unwrap_or("NULL"),
191 |         ]) {
192 |             Ok(_) => {
193 |                 for item in feed.items() {
194 |                     self.write_item(item)?;
195 |                 }
196 | 
197 |                 Ok(StorageEvent::Insert)
198 |             }
199 |             Err(err) => {
200 |                 log::error!("{:?}", err);
201 |                 Err(StorageError)
202 |             }
203 |         }
204 |     }
205 | 
206 |     pub fn write_feeds(&mut self, feeds: &Vec<Feed>) -> Result<Vec<StorageEvent>, StorageError> {
207 |         if let Ok(tx) = self.conn.transaction() {
208 |             let feed_stmt = "INSERT OR REPLACE INTO feeds(
209 |                     id,
210 |                     title,
211 |                     description,
212 |                     categories,
213 |                     url,
214 |                     link,
215 |                     ttl,
216 |                     pub_date,
217 |                     last_fetched
218 |                 ) VALUES(
219 |                     IFNULL((SELECT id FROM feeds WHERE id = ?1), ?1),
220 |                     ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9
221 |                 )";
222 | 
223 |             let item_stmt = "INSERT OR REPLACE INTO items(
224 |                     id,
225 |                     feed_id,
226 |                     title,
227 |                     author,
228 |                     content,
229 |                     description,
230 |                     text_description,
231 |                     categories,
232 |                     link,
233 |                     pub_date
234 |                 ) VALUES(
235 |                     IFNULL((SELECT id FROM items WHERE id = ?1), ?1),
236 |                     ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10
237 |                 )";
238 | 
239 |             let mut feed_stmt = tx.prepare_cached(feed_stmt).map_err(|err| {
240 |                 log::warn!("{:?}", err);
241 |                 StorageError
242 |             })?;
243 | 
244 |             let mut item_stmt = tx.prepare_cached(item_stmt).map_err(|err| {
245 |                 log::warn!("{:?}", err);
246 |                 StorageError
247 |             })?;
248 | 
249 |             let mut events = vec![];
250 | 
251 |             for feed in feeds {
252 |                 if let Err(e) = feed_stmt.execute([
253 |                     feed.id(),
254 |                     feed.title(),
255 |                     feed.description(),
256 |                     "[]",
257 |                     feed.url(),
258 |                     feed.link(),
259 |                     feed.ttl().unwrap_or("NULL"),
260 |                     feed.pub_date().unwrap_or("NULL"),
261 |                     feed.last_fetched().unwrap_or("NULL"),
262 |                 ]) {
263 |                     log::error!("{e:?}");
264 |                     return Err(StorageError);
265 |                 }
266 | 
267 |                 for item in feed.items() {
268 |                     if let Err(e) = item_stmt.execute([
269 |                         item.id(),
270 |                         item.feed_id(),
271 |                         item.title().unwrap_or("NULL"),
272 |                         item.author().unwrap_or("NULL"),
273 |                         item.content().unwrap_or("NULL"),
274 |                         item.description().unwrap_or("NULL"),
275 |                         item.description().unwrap_or("NULL"),
276 |                         "[]",
277 |                         item.link().unwrap_or("NULL"),
278 |                         item.pub_date().unwrap_or("NULL"),
279 |                     ]) {
280 |                         log::error!("{e:?}");
281 |                         return Err(StorageError);
282 |                     }
283 |                 }
284 | 
285 |                 events.push(StorageEvent::Insert);
286 |             }
287 |             return Ok(events);
288 |         } else {
289 |             log::error!("");
290 |             Err(StorageError)
291 |         }
292 |     }
293 | 
294 |     pub fn write_item(&self, item: &Item) -> Result<StorageEvent, StorageError> {
295 |         let stmt = "INSERT OR REPLACE INTO items(
296 |             id,
297 |             feed_id,
298 |             title,
299 |             author,
300 |             content,
301 |             description,
302 |             text_description,
303 |             categories,
304 |             link,
305 |             pub_date
306 |         ) VALUES(
307 |             IFNULL((SELECT id FROM items WHERE id = ?1), ?1),
308 |             ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10
309 |         )";
310 | 
311 |         let mut stmt = self.conn.prepare_cached(stmt).map_err(|err| {
312 |             log::warn!("{:?}", err);
313 |             StorageError
314 |         })?;
315 | 
316 |         match stmt.execute([
317 |             item.id(),
318 |             item.feed_id(),
319 |             item.title().unwrap_or("NULL"),
320 |             item.author().unwrap_or("NULL"),
321 |             item.content().unwrap_or("NULL"),
322 |             item.description().unwrap_or("NULL"),
323 |             item.description().unwrap_or("NULL"),
324 |             "[]",
325 |             item.link().unwrap_or("NULL"),
326 |             item.pub_date().unwrap_or("NULL"),
327 |         ]) {
328 |             Ok(_) => Ok(StorageEvent::Insert),
329 |             Err(err) => {
330 |                 log::error!("{:?}", err);
331 |                 Err(StorageError)
332 |             }
333 |         }
334 |     }
335 | 
336 |     pub fn delete_feed_with_url(&self, url: &str) -> Result<StorageEvent, StorageError> {
337 |         let stmt = "DELETE FROM feeds WHERE url = ?1";
338 |         let mut stmt = self.conn.prepare_cached(stmt).map_err(|_| StorageError)?;
339 | 
340 |         match stmt.execute([url]) {
341 |             Ok(delete_count) if delete_count > 0 => Ok(StorageEvent::Delete),
342 |             Ok(_) => Ok(StorageEvent::NoOp),
343 |             Err(_) => {
344 |                 log::error!("Failed to delete feed with url {}", url);
345 |                 Err(StorageError)
346 |             }
347 |         }
348 |     }
349 | }
350 | 


--------------------------------------------------------------------------------
/src/tui.rs:
--------------------------------------------------------------------------------
 1 | use crate::app::{App, AppResult};
 2 | use crate::event::EventHandler;
 3 | use crate::ui;
 4 | use crossterm::event::{DisableMouseCapture, EnableMouseCapture};
 5 | use crossterm::terminal::{self, EnterAlternateScreen, LeaveAlternateScreen};
 6 | use std::io;
 7 | use std::panic;
 8 | use tui::backend::Backend;
 9 | use tui::Terminal;
10 | 
11 | /// Representation of a terminal user interface.
12 | ///
13 | /// It is responsible for setting up the terminal,
14 | /// initializing the interface and handling the draw events.
15 | #[derive(Debug)]
16 | pub struct Tui<B: Backend> {
17 |     /// Interface to the Terminal.
18 |     terminal: Terminal<B>,
19 |     /// Terminal event handler.
20 |     pub events: EventHandler,
21 | }
22 | 
23 | impl<B: Backend> Tui<B> {
24 |     /// Constructs a new instance of [`Tui`].
25 |     pub fn new(terminal: Terminal<B>, events: EventHandler) -> Self {
26 |         Self { terminal, events }
27 |     }
28 | 
29 |     /// Initializes the terminal interface.
30 |     ///
31 |     /// It enables the raw mode and sets terminal properties.
32 |     pub fn init(&mut self) -> AppResult<()> {
33 |         terminal::enable_raw_mode()?;
34 |         crossterm::execute!(io::stderr(), EnterAlternateScreen, EnableMouseCapture)?;
35 | 
36 |         // Define a custom panic hook to reset the terminal properties.
37 |         // This way, you won't have your terminal messed up if an unexpected error happens.
38 |         let panic_hook = panic::take_hook();
39 |         panic::set_hook(Box::new(move |panic| {
40 |             Self::reset().expect("failed to reset the terminal");
41 |             panic_hook(panic);
42 |         }));
43 | 
44 |         self.terminal.hide_cursor()?;
45 |         self.terminal.clear()?;
46 |         Ok(())
47 |     }
48 | 
49 |     /// [`Draw`] the terminal interface by [`rendering`] the widgets.
50 |     ///
51 |     /// [`Draw`]: tui::Terminal::draw
52 |     /// [`rendering`]: crate::ui:render
53 |     pub fn draw(&mut self, app: &mut App) -> AppResult<()> {
54 |         self.terminal.draw(|frame| ui::render(app, frame))?;
55 |         Ok(())
56 |     }
57 | 
58 |     /// Resets the terminal interface.
59 |     ///
60 |     /// This function is also used for the panic hook to revert
61 |     /// the terminal properties if unexpected errors occur.
62 |     fn reset() -> AppResult<()> {
63 |         terminal::disable_raw_mode()?;
64 |         crossterm::execute!(io::stdout(), LeaveAlternateScreen, DisableMouseCapture)?;
65 |         Ok(())
66 |     }
67 | 
68 |     /// Exits the terminal interface.
69 |     ///
70 |     /// It disables the raw mode and reverts back the terminal properties.
71 |     pub fn exit(&mut self) -> AppResult<()> {
72 |         Self::reset()?;
73 |         self.terminal.show_cursor()?;
74 |         Ok(())
75 |     }
76 | }
77 | 


--------------------------------------------------------------------------------
/src/ui/browse.rs:
--------------------------------------------------------------------------------
  1 | use crate::app::{App, View};
  2 | use tui::{
  3 |     backend::Backend,
  4 |     layout::Alignment,
  5 |     prelude::*,
  6 |     style::{Color, Modifier, Style},
  7 |     widgets::{
  8 |         scrollbar, Block, BorderType, Borders, List, ListItem, Padding, Paragraph, Scrollbar, Wrap,
  9 |     },
 10 |     Frame,
 11 | };
 12 | 
 13 | pub fn render_browse_area<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>, area: Rect) {
 14 |     let chunks = Layout::default()
 15 |         .direction(Direction::Horizontal)
 16 |         .constraints(
 17 |             [
 18 |                 Constraint::Max(40),
 19 |                 Constraint::Min(60),
 20 |                 Constraint::Min(60),
 21 |             ]
 22 |             .as_ref(),
 23 |         )
 24 |         .split(area);
 25 | 
 26 |     let left = Block::default()
 27 |         .title("Feeds")
 28 |         .title_alignment(Alignment::Left)
 29 |         .title_style(Style::default().bg(Color::White).fg(Color::Red))
 30 |         .padding(if app.should_render_feeds_scroll() {
 31 |             Padding {
 32 |                 top: 1,
 33 |                 bottom: 1,
 34 |                 left: 1,
 35 |                 right: 2,
 36 |             }
 37 |         } else {
 38 |             Padding::uniform(1)
 39 |         })
 40 |         .borders(Borders::ALL)
 41 |         .border_style(if app.active_view == View::MainList {
 42 |             app.config.theme().active_border()
 43 |         } else {
 44 |             app.config.theme().border()
 45 |         })
 46 |         .border_type(BorderType::Plain);
 47 | 
 48 |     let feeds_list = List::new(
 49 |         app.feeds
 50 |             .items()
 51 |             .iter()
 52 |             .map(|feed| ListItem::new(format!("{} ({})", feed.title(), feed.items().len())))
 53 |             .collect::<Vec<_>>(),
 54 |     )
 55 |     .block(left)
 56 |     .style(app.config.theme().base())
 57 |     .highlight_style(if app.active_view == View::MainList {
 58 |         app.config.theme().active_selection()
 59 |     } else {
 60 |         app.config.theme().selection()
 61 |     });
 62 | 
 63 |     let current_feed = app
 64 |         .feeds
 65 |         .state
 66 |         .selected()
 67 |         .and_then(|i| app.feeds.items().get(i));
 68 | 
 69 |     if let Some(feed) = current_feed {
 70 |         let block = Block::default()
 71 |             .title(feed.title())
 72 |             .title_alignment(Alignment::Left)
 73 |             .padding(if app.should_render_items_scroll() {
 74 |                 Padding {
 75 |                     top: 1,
 76 |                     bottom: 1,
 77 |                     left: 1,
 78 |                     right: 2,
 79 |                 }
 80 |             } else {
 81 |                 Padding::uniform(1)
 82 |             })
 83 |             .borders(Borders::ALL)
 84 |             .border_style(if app.active_view == View::SubList {
 85 |                 app.config.theme().active_border()
 86 |             } else {
 87 |                 app.config.theme().border()
 88 |             })
 89 |             .border_type(BorderType::Plain);
 90 | 
 91 |         let items_list = List::new(
 92 |             feed.items()
 93 |                 .iter()
 94 |                 .map(|item| {
 95 |                     let title = item.title().clone().unwrap_or("default".into());
 96 |                     ListItem::new(title)
 97 |                 })
 98 |                 .collect::<Vec<_>>(),
 99 |         )
100 |         .block(block)
101 |         .style(app.config.theme().base())
102 |         .highlight_style(if app.active_view == View::SubList {
103 |             app.config.theme().active_selection()
104 |         } else {
105 |             app.config.theme().selection()
106 |         });
107 | 
108 |         if app.current_item().is_some() {
109 |             frame.render_stateful_widget(items_list, chunks[1], &mut app.items.state);
110 |             if app.should_render_items_scroll() {
111 |                 frame.render_stateful_widget(
112 |                     Scrollbar::default()
113 |                         .begin_symbol(None)
114 |                         .end_symbol(None)
115 |                         .track_symbol(scrollbar::VERTICAL.thumb)
116 |                         .track_style(app.config.theme().scrollbar_track())
117 |                         .thumb_style(app.config.theme().scrollbar_thumb()),
118 |                     chunks[1].inner(&Margin {
119 |                         vertical: 1,
120 |                         horizontal: 1,
121 |                     }),
122 |                     &mut app.items_scroll,
123 |                 );
124 |             }
125 |         } else {
126 |             frame.render_stateful_widget(
127 |                 items_list,
128 |                 chunks[1].union(chunks[2]),
129 |                 &mut app.items.state,
130 |             );
131 |             if app.should_render_items_scroll() {
132 |                 frame.render_stateful_widget(
133 |                     Scrollbar::default()
134 |                         .begin_symbol(None)
135 |                         .end_symbol(None)
136 |                         .track_symbol(scrollbar::VERTICAL.thumb)
137 |                         .track_style(app.config.theme().scrollbar_track())
138 |                         .thumb_style(app.config.theme().scrollbar_thumb()),
139 |                     chunks[1].union(chunks[2]).inner(&Margin {
140 |                         vertical: 1,
141 |                         horizontal: 1,
142 |                     }),
143 |                     &mut app.items_scroll,
144 |                 );
145 |             }
146 |         }
147 | 
148 |         if let Some(detail) = &app.current_item() {
149 |             let block = Block::default()
150 |                 .title("Detail")
151 |                 .title_alignment(Alignment::Left)
152 |                 .padding(Padding::uniform(1))
153 |                 .style(app.config.theme().base())
154 |                 .borders(Borders::ALL)
155 |                 .border_style(if app.active_view == View::Detail {
156 |                     app.config.theme().active_border()
157 |                 } else {
158 |                     app.config.theme().border()
159 |                 });
160 | 
161 |             frame.render_widget(block, chunks[2]);
162 | 
163 |             let content_chunks = Layout::default()
164 |                 .direction(Direction::Vertical)
165 |                 .constraints([
166 |                     Constraint::Min(1),
167 |                     Constraint::Min(1),
168 |                     Constraint::Min(1),
169 |                     Constraint::Length(1),
170 |                     Constraint::Min(1),
171 |                 ])
172 |                 .margin(2)
173 |                 .split(chunks[2]);
174 | 
175 |             let title = Paragraph::new(detail.title().unwrap_or("[no title]"))
176 |                 .style(Style::default().add_modifier(Modifier::ITALIC))
177 |                 .wrap(Wrap { trim: true })
178 |                 .alignment(Alignment::Center);
179 | 
180 |             let author = Paragraph::new(detail.author().unwrap_or("[anonymous]"))
181 |                 .alignment(Alignment::Center);
182 | 
183 |             let date = Paragraph::new(detail.pub_date().unwrap_or("[no date]"))
184 |                 .alignment(Alignment::Center);
185 | 
186 |             let body = Paragraph::new(detail.description().unwrap_or("[no content]"))
187 |                 .wrap(Wrap { trim: true })
188 |                 .block(Block::default().padding(Padding {
189 |                     top: 0,
190 |                     bottom: 0,
191 |                     left: 1,
192 |                     right: if app.should_render_detail_scroll() {
193 |                         2
194 |                     } else {
195 |                         1
196 |                     },
197 |                 }))
198 |                 .scroll((app.detail_scroll_index, 0));
199 | 
200 |             frame.render_widget(title, content_chunks[0]);
201 |             frame.render_widget(author, content_chunks[1]);
202 |             frame.render_widget(date, content_chunks[2]);
203 |             frame.render_widget(
204 |                 Block::default()
205 |                     .borders(Borders::TOP)
206 |                     .border_style(app.config.theme().border())
207 |                     .padding(Padding::vertical(1)),
208 |                 content_chunks[3],
209 |             );
210 |             frame.render_widget(body, content_chunks[4]);
211 | 
212 |             app.detail_scroll = app.detail_scroll.content_length(48);
213 |             if app.should_render_detail_scroll() {
214 |                 frame.render_stateful_widget(
215 |                     Scrollbar::default()
216 |                         .begin_symbol(None)
217 |                         .end_symbol(None)
218 |                         .track_symbol(scrollbar::VERTICAL.thumb)
219 |                         .track_style(app.config.theme().scrollbar_track())
220 |                         .thumb_style(app.config.theme().scrollbar_thumb()),
221 |                     content_chunks[4],
222 |                     &mut app.detail_scroll,
223 |                 );
224 |             }
225 |         }
226 | 
227 |         frame.render_stateful_widget(feeds_list, chunks[0], &mut app.feeds.state);
228 |         if app.should_render_feeds_scroll() {
229 |             frame.render_stateful_widget(
230 |                 Scrollbar::default()
231 |                     .begin_symbol(None)
232 |                     .end_symbol(None)
233 |                     .track_symbol(scrollbar::VERTICAL.thumb)
234 |                     .track_style(app.config.theme().scrollbar_track())
235 |                     .thumb_style(app.config.theme().scrollbar_thumb()),
236 |                 chunks[0].inner(&Margin {
237 |                     vertical: 1,
238 |                     horizontal: 1,
239 |                 }),
240 |                 &mut app.feeds_scroll,
241 |             );
242 |         }
243 |     } else {
244 |         frame.render_stateful_widget(feeds_list, area, &mut app.feeds.state);
245 |         if app.should_render_feeds_scroll() {
246 |             frame.render_stateful_widget(
247 |                 Scrollbar::default()
248 |                     .begin_symbol(None)
249 |                     .end_symbol(None)
250 |                     .track_symbol(scrollbar::VERTICAL.thumb)
251 |                     .track_style(app.config.theme().scrollbar_track())
252 |                     .thumb_style(app.config.theme().scrollbar_thumb()),
253 |                 area.inner(&Margin {
254 |                     vertical: 1,
255 |                     horizontal: 1,
256 |                 }),
257 |                 &mut app.feeds_scroll,
258 |             );
259 |         }
260 |     }
261 | }
262 | 


--------------------------------------------------------------------------------
/src/ui/detail.rs:
--------------------------------------------------------------------------------
  1 | use html_parser::Dom;
  2 | use tui::layout::Alignment;
  3 | use tui::prelude::*;
  4 | use tui::style::Style;
  5 | use tui::widgets::{Block, Wrap};
  6 | 
  7 | fn get_line_offset(line_width: u16, text_area_width: u16, alignment: Alignment) -> u16 {
  8 |     match alignment {
  9 |         Alignment::Center => (text_area_width / 2).saturating_sub(line_width / 2),
 10 |         Alignment::Right => text_area_width.saturating_sub(line_width),
 11 |         Alignment::Left => 0,
 12 |     }
 13 | }
 14 | 
 15 | struct HTML<'a> {
 16 |     /// A block to wrap the widget in
 17 |     block: Option<Block<'a>>,
 18 |     /// Widget style
 19 |     style: Style,
 20 |     /// How to wrap the text
 21 |     wrap: Option<Wrap>,
 22 |     /// The text to display
 23 |     text: Text<'a>,
 24 |     /// Scroll
 25 |     scroll: (u16, u16),
 26 |     /// Alignment of the text
 27 |     alignment: Alignment,
 28 | }
 29 | 
 30 | impl<'a> HTML<'a> {
 31 |     fn from_dom(fragment: Dom) -> Self {
 32 |         // let text: Vec<Span<'a>> = unimplemented!();
 33 |         let text = Text::raw("asdd\n\nsdfae\nasdfasd");
 34 | 
 35 |         Self {
 36 |             block: None,
 37 |             style: Style::default(),
 38 |             wrap: None,
 39 |             text: text.into(),
 40 |             scroll: (0, 0),
 41 |             alignment: Alignment::Left,
 42 |         }
 43 |     }
 44 | 
 45 |     pub fn block(mut self, block: Block<'a>) -> HTML<'a> {
 46 |         self.block = Some(block);
 47 |         self
 48 |     }
 49 | 
 50 |     pub fn style(mut self, style: Style) -> HTML<'a> {
 51 |         self.style = style;
 52 |         self
 53 |     }
 54 | 
 55 |     pub fn wrap(mut self, wrap: Wrap) -> HTML<'a> {
 56 |         self.wrap = Some(wrap);
 57 |         self
 58 |     }
 59 | 
 60 |     pub fn scroll(mut self, offset: (u16, u16)) -> HTML<'a> {
 61 |         self.scroll = offset;
 62 |         self
 63 |     }
 64 | 
 65 |     pub fn alignment(mut self, alignment: Alignment) -> HTML<'a> {
 66 |         self.alignment = alignment;
 67 |         self
 68 |     }
 69 | }
 70 | 
 71 | // impl<'a> Widget for HTML<'a> {
 72 | //     fn render(mut self, area: Rect, buf: &mut Buffer) {
 73 | //         buf.set_style(area, self.style);
 74 | //         let text_area = match self.block.take() {
 75 | //             Some(b) => {
 76 | //                 let inner_area = b.inner(area);
 77 | //                 b.render(area, buf);
 78 | //                 inner_area
 79 | //             }
 80 | //             None => area,
 81 | //         };
 82 | 
 83 | //         if text_area.height < 1 {
 84 | //             return;
 85 | //         }
 86 | 
 87 | //         let style = self.style;
 88 | //         let styled = self.text.lines.iter().map(|line| {
 89 | //             (
 90 | //                 line.spans
 91 | //                     .iter()
 92 | //                     .flat_map(|span| span.styled_graphemes(style)),
 93 | //                 line.alignment.unwrap_or(self.alignment),
 94 | //             )
 95 | //         });
 96 | 
 97 | //         let mut line_composer: Box<dyn LineComposer> = if let Some(Wrap { trim }) = self.wrap {
 98 | //             Box::new(WordWrapper::new(styled, text_area.width, trim))
 99 | //         } else {
100 | //             let mut line_composer = Box::new(LineTruncator::new(styled, text_area.width));
101 | //             line_composer.set_horizontal_offset(self.scroll.1);
102 | //             line_composer
103 | //         };
104 | //         let mut y = 0;
105 | //         while let Some((current_line, current_line_width, current_line_alignment)) =
106 | //             line_composer.next_line()
107 | //         {
108 | //             if y >= self.scroll.0 {
109 | //                 let mut x =
110 | //                     get_line_offset(current_line_width, text_area.width, current_line_alignment);
111 | //                 for StyledGrapheme { symbol, style } in current_line {
112 | //                     let width = symbol.width();
113 | //                     if width == 0 {
114 | //                         continue;
115 | //                     }
116 | //                     buf.get_mut(text_area.left() + x, text_area.top() + y - self.scroll.0)
117 | //                         .set_symbol(if symbol.is_empty() {
118 | //                             // If the symbol is empty, the last char which rendered last time will
119 | //                             // leave on the line. It's a quick fix.
120 | //                             " "
121 | //                         } else {
122 | //                             symbol
123 | //                         })
124 | //                         .set_style(*style);
125 | //                     x += width as u16;
126 | //                 }
127 | //             }
128 | //             y += 1;
129 | //             if y >= text_area.height + self.scroll.0 {
130 | //                 break;
131 | //             }
132 | //         }
133 | //     }
134 | // }
135 | 
136 | pub fn p(input: &str) -> Result<Dom, html_parser::Error> {
137 |     Dom::parse(input)
138 | 
139 |     // Ok(Dom {
140 |     //     tree_type: DomVariant::DocumentFragment,
141 |     //     children: [
142 |     //         Element(Element {
143 |     //             id: None,
144 |     //             name: "p",
145 |     //             variant: Normal,
146 |     //             attributes: {},
147 |     //             classes: [],
148 |     //             children: [
149 |     //                 Text("We recently launched a new feature at Buffer, called "),
150 |     //                 Element(Element {
151 |     //                     id: None, name: "a",
152 |     //                     variant: Normal,
153 |     //                     attributes: {
154 |     //                         "href": Some("https://buffer.com/ideas?ref=buffer.com"),
155 |     //                         "rel": Some("noreferrer nofollow noopener")
156 |     //                     },
157 |     //                     classes: [],
158 |     //                     children: [Text("Ideas")],
159 |     //                     source_span: SourceSpan {
160 |     //                         text: "<a href=\"https://buffer.com/ideas?ref=buffer.com\" rel=\"noreferrer nofollow noopener\">Ideas</a>",
161 |     //                         start_line: 1,
162 |     //                         end_line: 1,
163 |     //                         start_column: 57,
164 |     //                         end_column: 151
165 |     //                     }
166 |     //                 }),
167 |     //                 Text(". With Ideas, you can store all your best ideas, tweak them until they&#x2019;re ready, and drop them straight into your Buffer queue. Now that Ideas has launched in our web and mobile apps, we have some time to")
168 |     //             ],
169 |     //             source_span: SourceSpan {
170 |     //                 text: "<p>We recently launched a new feature at Buffer, called <a href=\"https://buffer.com/ideas?ref=buffer.com\" rel=\"noreferrer nofollow noopener\">Ideas</a>. With Ideas, you can store all your best ideas, tweak them until they&#x2019;re ready, and drop them straight into your Buffer queue. Now that Ideas has launched in our web and mobile apps, we have some time to</p>",
171 |     //                 start_line: 1,
172 |     //                 end_line: 1,
173 |     //                 start_column: 1,
174 |     //                 end_column: 366
175 |     //             }
176 |     //         })
177 |     //     ],
178 |     //     errors: []
179 |     // })
180 | }
181 | 


--------------------------------------------------------------------------------
/src/ui/mod.rs:
--------------------------------------------------------------------------------
  1 | use crate::app::{App, Status, Tab};
  2 | use tui::{
  3 |     backend::Backend,
  4 |     layout::Alignment,
  5 |     prelude::*,
  6 |     widgets::{Block, BorderType, Borders, Clear, Gauge, Padding, Paragraph, Tabs},
  7 |     Frame,
  8 | };
  9 | 
 10 | pub mod browse;
 11 | pub mod detail;
 12 | pub mod themed;
 13 | 
 14 | /// Renders the user interface widgets.
 15 | pub fn render<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>) {
 16 |     let wrapper = Layout::default()
 17 |         .direction(Direction::Vertical)
 18 |         .constraints([
 19 |             Constraint::Length(2),
 20 |             Constraint::Min(10),
 21 |             Constraint::Length(2),
 22 |         ])
 23 |         .split(frame.size());
 24 | 
 25 |     render_tabs_bar(app, frame, wrapper[0]);
 26 | 
 27 |     match app.active_tab {
 28 |         Tab::Browse => {
 29 |             browse::render_browse_area(app, frame, wrapper[1]);
 30 |         }
 31 |         _ => {}
 32 |     }
 33 | 
 34 |     render_status_bar(app, frame, wrapper[2]);
 35 | 
 36 |     if app.show_keybinds {
 37 |         render_keybinds_overlay(app, frame, frame.size());
 38 |     }
 39 | }
 40 | 
 41 | fn render_tabs_bar<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>, area: Rect) {
 42 |     let browse = Tab::Browse.to_string().clone();
 43 |     let (b, rowse) = browse.split_at(1);
 44 |     let b = b.underlined().to_owned();
 45 |     let browse = Line::from(vec![b, rowse.into()]);
 46 | 
 47 |     let favorites = Tab::Favorites.to_string().clone();
 48 |     let (f, avorites) = favorites.split_at(1);
 49 |     let f = f.underlined().to_owned();
 50 |     let favorites = Line::from(vec![f, avorites.into()]);
 51 | 
 52 |     let tags = Tab::Tags.to_string().clone();
 53 |     let (t, ags) = tags.split_at(1);
 54 |     let t = t.underlined().to_owned();
 55 |     let tags = Line::from(vec![t, ags.into()]);
 56 | 
 57 |     let tabs = Tabs::new(vec![browse, favorites, tags])
 58 |         .block(
 59 |             Block::default()
 60 |                 .style(app.config.theme().status())
 61 |                 .borders(Borders::BOTTOM)
 62 |                 .border_style(app.config.theme().active_border()),
 63 |         )
 64 |         .select(app.active_tab.index_of())
 65 |         .highlight_style(app.config.theme().selection());
 66 |     frame.render_widget(tabs, area);
 67 | }
 68 | 
 69 | fn render_keybinds_overlay<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>, area: Rect) {
 70 |     let area = centered_rect_ratio((5, 9), (5, 9), area);
 71 | 
 72 |     let block = Block::default()
 73 |         .borders(Borders::ALL)
 74 |         .border_style(app.config.theme().overlay())
 75 |         .border_type(BorderType::Plain)
 76 |         .style(app.config.theme().overlay())
 77 |         .padding(Padding {
 78 |             top: 1,
 79 |             bottom: 1,
 80 |             left: 2,
 81 |             right: 2,
 82 |         });
 83 | 
 84 |     let layout = Layout::default()
 85 |         .direction(Direction::Horizontal)
 86 |         .constraints([Constraint::Ratio(1, 2), Constraint::Ratio(1, 2)])
 87 |         .split(area);
 88 | 
 89 |     let basic = vec![
 90 |         Line::from("j/k    scroll down/up"),
 91 |         Line::from("h/l    focus previous/next panel"),
 92 |         Line::from("Ent    select current"),
 93 |         Line::from("Esc    deselect current"),
 94 |         Line::from("Tab    cycle tabs"),
 95 |         Line::from("b/f/t  go to Browse/Favorites/Tags tab"),
 96 |         Line::from(":      console mode"),
 97 |         Line::from("r      refresh all feeds"),
 98 |         Line::from("q      quit"),
 99 |         Line::from("o      open feed/item in browser"),
100 |         Line::from(",      open config file"),
101 |         Line::from("?      toggle this help dialog"),
102 |     ];
103 |     let basic_keybinds = Paragraph::new(basic).block(block.clone().title("Keybinds"));
104 | 
105 |     let console = vec![
106 |         Line::from(":add <URL>      scroll down/up"),
107 |         Line::from(":delete <URL>   focus previous/next panel"),
108 |         Line::from(":search <TERM>  filter feeds"),
109 |         Line::from("Esc             exit console mode"),
110 |     ];
111 |     let console_keybinds = Paragraph::new(console).block(block.title("Console"));
112 | 
113 |     frame.render_widget(Clear, area);
114 |     frame.render_widget(basic_keybinds, layout[0]);
115 |     frame.render_widget(console_keybinds, layout[1]);
116 | }
117 | 
118 | fn render_console_area<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>, area: Rect) {
119 |     let block = Block::default()
120 |         .style(app.config.theme().status())
121 |         .borders(Borders::TOP)
122 |         .border_style(app.config.theme().active_border());
123 | 
124 |     let input_field = Paragraph::new(app.command_state.input.as_str()).block(block);
125 | 
126 |     frame.render_widget(input_field, area);
127 |     frame.set_cursor(
128 |         // Draw the cursor at the current position in the input field.
129 |         // This position is can be controlled via the left and right arrow key
130 |         area.x + app.command_state.cursor_position as u16,
131 |         // Move one line down, from the border to the input line
132 |         area.y + 1,
133 |     )
134 | }
135 | 
136 | fn render_status_bar<B: Backend>(app: &mut App, frame: &mut Frame<'_, B>, area: Rect) {
137 |     let block = Block::default()
138 |         .style(app.config.theme().status())
139 |         .borders(Borders::TOP)
140 |         .border_style(app.config.theme().active_border());
141 | 
142 |     if app.should_render_console() {
143 |         render_console_area(app, frame, area)
144 |     } else {
145 |         match &app.status {
146 |             Status::Loading(n, count) => {
147 |                 if *count > 0 {
148 |                     frame.render_widget(
149 |                         Gauge::default()
150 |                             .block(block)
151 |                             .ratio(*n as f64 / *count as f64)
152 |                             .label(format!("Loading {}/{}", n, count))
153 |                             .use_unicode(true)
154 |                             .gauge_style(app.config.theme().status()),
155 |                         area,
156 |                     );
157 |                 }
158 |             }
159 |             Status::Done => {
160 |                 let text = match app.current_feed().cloned() {
161 |                     Some(feed) => {
162 |                         let mut message = String::from("Last fetched: ");
163 |                         let date = feed.last_fetched().unwrap_or("never").into();
164 |                         message.push_str(date);
165 |                         message
166 |                     }
167 |                     _ => "[no selection]".to_string(),
168 |                 };
169 |                 frame.render_widget(
170 |                     Paragraph::new(text)
171 |                         .alignment(Alignment::Center)
172 |                         .block(block),
173 |                     area,
174 |                 );
175 |             }
176 |             Status::Errored(s) => {
177 |                 frame.render_widget(
178 |                     Paragraph::new(format!("ERROR: {}", s))
179 |                         .alignment(Alignment::Center)
180 |                         .block(block),
181 |                     area,
182 |                 );
183 |             }
184 |         }
185 |     }
186 | }
187 | 
188 | fn centered_rect_ratio(ratio_x: (u32, u32), ratio_y: (u32, u32), r: Rect) -> Rect {
189 |     let each_x = (ratio_x.1 - ratio_x.0) / 2;
190 |     let each_y = (ratio_y.1 - ratio_y.0) / 2;
191 | 
192 |     let popup_layout = Layout::default()
193 |         .direction(Direction::Vertical)
194 |         .constraints(
195 |             [
196 |                 Constraint::Ratio(each_y, ratio_y.1),
197 |                 Constraint::Ratio(ratio_y.0, ratio_y.1),
198 |                 Constraint::Ratio(each_y, ratio_y.1),
199 |             ]
200 |             .as_ref(),
201 |         )
202 |         .split(r);
203 | 
204 |     Layout::default()
205 |         .direction(Direction::Horizontal)
206 |         .constraints(
207 |             [
208 |                 Constraint::Ratio(each_x, ratio_x.1),
209 |                 Constraint::Ratio(ratio_x.0, ratio_x.1),
210 |                 Constraint::Ratio(each_x, ratio_x.1),
211 |             ]
212 |             .as_ref(),
213 |         )
214 |         .split(popup_layout[1])[1]
215 | }
216 | 
217 | fn centered_rect_sized(width: u16, height: u16, r: Rect) -> Rect {
218 |     let each_x = (r.width - width) / 2;
219 |     let each_y = (r.height - height) / 2;
220 | 
221 |     let popup_layout = Layout::default()
222 |         .direction(Direction::Vertical)
223 |         .constraints(
224 |             [
225 |                 Constraint::Length(each_y),
226 |                 Constraint::Length(height),
227 |                 Constraint::Length(each_y),
228 |             ]
229 |             .as_ref(),
230 |         )
231 |         .split(r);
232 | 
233 |     Layout::default()
234 |         .direction(Direction::Horizontal)
235 |         .constraints(
236 |             [
237 |                 Constraint::Length(each_x),
238 |                 Constraint::Length(width),
239 |                 Constraint::Length(each_x),
240 |             ]
241 |             .as_ref(),
242 |         )
243 |         .split(popup_layout[1])[1]
244 | }
245 | 


--------------------------------------------------------------------------------
/src/ui/themed.rs:
--------------------------------------------------------------------------------
 1 | use tui::style::Styled;
 2 | use tui::widgets::Block;
 3 | 
 4 | pub trait Themed<'a, T>
 5 | where
 6 |     T: Styled,
 7 | {
 8 |     fn theme(self) -> Self;
 9 | }
10 | 
11 | impl<'a> Themed<'a, Block<'_>> for Block<'a> {
12 |     fn theme(self) -> Block<'a> {
13 |         self
14 |     }
15 | }
16 | 


--------------------------------------------------------------------------------
/src/util.rs:
--------------------------------------------------------------------------------
 1 | use crate::config::{Config, SortOrder};
 2 | use crate::feed::Feed;
 3 | 
 4 | pub fn sort_feeds(feeds: &mut Vec<Feed>, config: &Config) {
 5 |     match config.sort_order() {
 6 |         SortOrder::Az => {
 7 |             feeds.sort_by(|a, b| a.title().partial_cmp(b.title()).unwrap());
 8 |         }
 9 |         SortOrder::Za => {
10 |             feeds.sort_by(|a, b| b.title().partial_cmp(a.title()).unwrap());
11 |         }
12 |         SortOrder::Custom => {
13 |             let urls = config.feed_urls();
14 |             feeds.sort_by(|a, b| {
15 |                 let a_index = urls.iter().position(|u| a.link() == u).unwrap_or_default();
16 |                 let b_index = urls.iter().position(|u| b.link() == u).unwrap_or_default();
17 |                 a_index.cmp(&b_index)
18 |             })
19 |         }
20 |         SortOrder::Unread => {
21 |             unimplemented!()
22 |         }
23 |         SortOrder::Newest => feeds.sort_by(|a, b| a.last_fetched().cmp(&b.last_fetched())),
24 |         SortOrder::Oldest => feeds.sort_by(|a, b| b.last_fetched().cmp(&a.last_fetched())),
25 |     }
26 | }
27 | 
28 | #[macro_export]
29 | macro_rules! report {
30 |     ($fallible:expr, $message:literal) => {
31 |         match $fallible {
32 |             Err(_) => {
33 |                 use log::error;
34 |                 error!($message)
35 |             }
36 |             _ => {}
37 |         }
38 |     };
39 | }
40 | 


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/vhs.tape:
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  1 | Output meta/vhs.gif
  2 | # Set Theme "Elementary"
  3 | Set FontSize 16
  4 | Set Padding 32
  5 | Set Width 1600
  6 | Set Height 800
  7 | 
  8 | Type "mcsn"
  9 | Hide
 10 | Type " -c ./src/config/moccasin.toml"
 11 | Sleep 1s
 12 | Enter
 13 | Show
 14 | Sleep 2s
 15 | 
 16 | Down
 17 | Sleep 2500ms
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 40 | 
 41 | Type "a"
 42 | Sleep 500ms
 43 | Type "https://feeds.feedburner.com/RockPaperShotgun"
 44 | Sleep 500ms
 45 | Enter
 46 | Sleep 2s
 47 | 
 48 | Left
 49 | Sleep 500ms
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 52 | Down
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 58 | Right
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106 | Down
107 | Sleep 250ms
108 | Down
109 | Sleep 250ms
110 | Down
111 | Sleep 250ms
112 | Down
113 | Sleep 4s


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