├── .dockerignore ├── .env_sample ├── .formatter.exs ├── .github ├── dependabot.yml └── workflows │ └── ci.yml ├── .gitignore ├── Dockerfile ├── LICENSE ├── README.md ├── assets ├── css │ └── app.css ├── js │ └── app.js ├── tailwind.config.js └── vendor │ └── topbar.js ├── config ├── config.exs ├── dev.exs ├── prod.exs ├── runtime.exs └── test.exs ├── coveralls.json ├── fly.toml ├── lib ├── live_cursors.ex ├── live_cursors │ └── application.ex ├── live_cursors_web.ex └── live_cursors_web │ ├── channels │ └── presence.ex │ ├── controllers │ └── auth_controller.ex │ ├── endpoint.ex │ ├── gettext.ex │ ├── live │ ├── cursors.ex │ └── cursors.html.heex │ ├── router.ex │ ├── telemetry.ex │ ├── templates │ ├── layout │ │ ├── app.html.heex │ │ ├── live.html.heex │ │ └── root.html.heex │ └── page │ │ └── index.html.heex │ └── views │ ├── error_helpers.ex │ ├── error_view.ex │ ├── layout_view.ex │ └── page_view.ex ├── mix.exs ├── mix.lock ├── priv ├── gettext │ ├── en │ │ └── LC_MESSAGES │ │ │ └── errors.po │ └── errors.pot └── static │ ├── favicon.ico │ ├── images │ └── phoenix.png │ └── robots.txt ├── rel └── overlays │ └── bin │ ├── server │ └── server.bat └── test ├── live_cursors_web ├── controllers │ ├── auth_controller_test.exs │ └── page_controller_test.exs ├── live │ └── cursors_test.exs └── views │ ├── error_view_test.exs │ ├── layout_view_test.exs │ └── page_view_test.exs ├── support └── conn_case.ex └── test_helper.exs /.dockerignore: -------------------------------------------------------------------------------- 1 | # flyctl launch added from .elixir_ls/.gitignore 2 | .elixir_ls/**/* 3 | 4 | # flyctl launch added from .gitignore 5 | # The directory Mix will write compiled artifacts to. 6 | _build 7 | 8 | # If you run "mix test --cover", coverage assets end up here. 9 | cover 10 | 11 | # The directory Mix downloads your dependencies sources to. 12 | deps 13 | 14 | # Where 3rd-party dependencies like ExDoc output generated docs. 15 | doc 16 | 17 | # Ignore .fetch files in case you like to edit your project deps locally. 18 | .fetch 19 | 20 | # If the VM crashes, it generates a dump, let's ignore it too. 21 | **/erl_crash.dump 22 | 23 | # Also ignore archive artifacts (built via "mix archive.build"). 24 | **/*.ez 25 | 26 | # Ignore package tarball (built via "mix hex.build"). 27 | **/live_cursors-*.tar 28 | 29 | # Ignore assets that are produced by build tools. 30 | priv/static/assets 31 | 32 | # Ignore digested assets cache. 33 | priv/static/cache_manifest.json 34 | 35 | # In case you use Node.js/npm, you want to ignore these. 36 | **/npm-debug.log 37 | assets/node_modules 38 | 39 | 40 | **/.DS_Store 41 | 42 | **/.vscode 43 | 44 | **/.elixir_ls 45 | -------------------------------------------------------------------------------- /.env_sample: -------------------------------------------------------------------------------- 1 | export AUTH_API_KEY=2cfxNb3PwJuibpFGfZLFRxw3B18oykn4PiJMGoRsZgeuSJqN1qY/2cfxNarsZzzwNzy9B49417bueRp9D5stKREKNXvp1wiFr14sdbB/authdemo.fly.dev 2 | -------------------------------------------------------------------------------- /.formatter.exs: -------------------------------------------------------------------------------- 1 | [ 2 | import_deps: [:phoenix], 3 | subdirectories: ["priv/*/migrations"], 4 | plugins: [Phoenix.LiveView.HTMLFormatter], 5 | inputs: ["*.{heex,ex,exs}", "{config,lib,test}/**/*.{heex,ex,exs}", "priv/*/seeds.exs"] 6 | ] 7 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: mix 4 | directory: "/" 5 | schedule: 6 | interval: weekly 7 | time: "17:00" 8 | timezone: Europe/London 9 | -------------------------------------------------------------------------------- /.github/workflows/ci.yml: -------------------------------------------------------------------------------- 1 | name: Elixir CI 2 | 3 | on: 4 | push: 5 | branches: [ main ] 6 | pull_request: 7 | branches: [ main ] 8 | 9 | jobs: 10 | build: 11 | name: Build and test 12 | runs-on: ubuntu-latest 13 | steps: 14 | - uses: actions/checkout@v2 15 | - name: Set up Elixir 16 | uses: erlef/setup-beam@v1 17 | with: 18 | elixir-version: '1.14.2' # Define the elixir version [required] 19 | otp-version: '25.1.2' # Define the OTP version [required] 20 | - name: Restore dependencies cache 21 | uses: actions/cache@v4 22 | with: 23 | path: deps 24 | key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }} 25 | restore-keys: ${{ runner.os }}-mix- 26 | - name: Install dependencies 27 | run: mix deps.get 28 | - name: Run Tests 29 | run: mix coveralls.json 30 | env: 31 | MIX_ENV: test 32 | AUTH_API_KEY: ${{ secrets.AUTH_API_KEY }} 33 | ENCRYPTION_KEYS: ${{ secrets.ENCRYPTION_KEYS }} 34 | - name: Upload coverage to Codecov 35 | uses: codecov/codecov-action@v1 36 | 37 | # Continuous Deployment to Fly.io 38 | # https://fly.io/docs/app-guides/continuous-deployment-with-github-actions/ 39 | deploy: 40 | name: Deploy app 41 | runs-on: ubuntu-latest 42 | needs: build 43 | # https://stackoverflow.com/questions/58139406/only-run-job-on-specific-branch-with-github-actions 44 | if: github.ref == 'refs/heads/main' 45 | env: 46 | FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }} 47 | steps: 48 | - uses: actions/checkout@v2 49 | - uses: superfly/flyctl-actions@1.1 50 | with: 51 | args: "deploy" 52 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # The directory Mix will write compiled artifacts to. 2 | /_build/ 3 | 4 | # If you run "mix test --cover", coverage assets end up here. 5 | /cover/ 6 | 7 | # The directory Mix downloads your dependencies sources to. 8 | /deps/ 9 | 10 | # Where 3rd-party dependencies like ExDoc output generated docs. 11 | /doc/ 12 | 13 | # Ignore .fetch files in case you like to edit your project deps locally. 14 | /.fetch 15 | 16 | # If the VM crashes, it generates a dump, let's ignore it too. 17 | erl_crash.dump 18 | 19 | # Also ignore archive artifacts (built via "mix archive.build"). 20 | *.ez 21 | 22 | # Ignore package tarball (built via "mix hex.build"). 23 | live_cursors-*.tar 24 | 25 | # Ignore assets that are produced by build tools. 26 | /priv/static/assets/ 27 | 28 | # Ignore digested assets cache. 29 | /priv/static/cache_manifest.json 30 | 31 | # In case you use Node.js/npm, you want to ignore these. 32 | npm-debug.log 33 | /assets/node_modules/ 34 | 35 | 36 | .DS_Store 37 | 38 | .vscode/ 39 | 40 | .elixir_ls -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | # Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian instead of 2 | # Alpine to avoid DNS resolution issues in production. 3 | # 4 | # https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu 5 | # https://hub.docker.com/_/ubuntu?tab=tags 6 | # 7 | # 8 | # This file is based on these images: 9 | # 10 | # - https://hub.docker.com/r/hexpm/elixir/tags - for the build image 11 | # - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20210902-slim - for the release image 12 | # - https://pkgs.org/ - resource for finding needed packages 13 | # - Ex: hexpm/elixir:1.13.4-erlang-25.0.2-debian-bullseye-20210902-slim 14 | # 15 | ARG ELIXIR_VERSION=1.13.4 16 | ARG OTP_VERSION=25.0.2 17 | ARG DEBIAN_VERSION=bullseye-20210902-slim 18 | 19 | ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}" 20 | ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}" 21 | 22 | FROM ${BUILDER_IMAGE} as builder 23 | 24 | # install build dependencies 25 | RUN apt-get update -y && apt-get install -y build-essential git \ 26 | && apt-get clean && rm -f /var/lib/apt/lists/*_* 27 | 28 | # prepare build dir 29 | WORKDIR /app 30 | 31 | # install hex + rebar 32 | RUN mix local.hex --force && \ 33 | mix local.rebar --force 34 | 35 | # set build ENV 36 | ENV MIX_ENV="prod" 37 | 38 | # install mix dependencies 39 | COPY mix.exs mix.lock ./ 40 | RUN mix deps.get --only $MIX_ENV 41 | RUN mkdir config 42 | 43 | # copy compile-time config files before we compile dependencies 44 | # to ensure any relevant config change will trigger the dependencies 45 | # to be re-compiled. 46 | COPY config/config.exs config/${MIX_ENV}.exs config/ 47 | RUN mix deps.compile 48 | 49 | COPY priv priv 50 | 51 | COPY lib lib 52 | 53 | COPY assets assets 54 | 55 | # compile assets 56 | RUN mix assets.deploy 57 | 58 | # Compile the release 59 | RUN mix compile 60 | 61 | # Changes to config/runtime.exs don't require recompiling the code 62 | COPY config/runtime.exs config/ 63 | 64 | COPY rel rel 65 | RUN mix release 66 | 67 | # start a new build stage so that the final image will only contain 68 | # the compiled release and other runtime necessities 69 | FROM ${RUNNER_IMAGE} 70 | 71 | RUN apt-get update -y && apt-get install -y libstdc++6 openssl libncurses5 locales \ 72 | && apt-get clean && rm -f /var/lib/apt/lists/*_* 73 | 74 | # Set the locale 75 | RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen 76 | 77 | ENV LANG en_US.UTF-8 78 | ENV LANGUAGE en_US:en 79 | ENV LC_ALL en_US.UTF-8 80 | 81 | WORKDIR "/app" 82 | RUN chown nobody /app 83 | 84 | # set runner ENV 85 | ENV MIX_ENV="prod" 86 | 87 | # Only copy the final release from the build stage 88 | COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/live_cursors ./ 89 | 90 | USER nobody 91 | 92 | CMD ["/app/bin/server"] 93 | # Appended by flyctl 94 | ENV ECTO_IPV6 true 95 | ENV ERL_AFLAGS "-proto_dist inet6_tcp" 96 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. 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In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. 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It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | 294 | Copyright (C) 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | , 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 |
2 | 3 | # `Phoenix LiveView` Realtime Cursor Tracking Tutorial 4 | 5 | ![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial/ci.yml?label=build&style=flat-square&branch=main) 6 | [![codecov.io](https://img.shields.io/codecov/c/github/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial/main.svg?style=flat-square)](https://codecov.io/github/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial?branch=main) 7 | [![Hex.pm](https://img.shields.io/hexpm/v/phoenix?color=brightgreen&style=flat-square)](https://hex.pm/packages/phoenix) 8 | [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat-square)](https://github.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial/issues) 9 | [![HitCount](https://hits.dwyl.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial.svg?style=flat-square&show=unique)](https://hits.dwyl.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial) 10 | 11 | Learn how to create a **live cursor tracking app** using **Phoenix LiveView**! 12 | 13 |
14 | 15 |
16 | 17 | - [`Phoenix LiveView` Realtime Cursor Tracking Tutorial](#phoenix-liveview-realtime-cursor-tracking-tutorial) 18 | - [Why? 🤷](#why-) 19 | - [What? 💭](#what-) 20 | - [Who? 👤](#who-) 21 | - [Prerequisites](#prerequisites) 22 | - [How? 💻](#how-) 23 | - [Step 0: Run the finished app locally](#step-0-run-the-finished-app-locally) 24 | - [Clone the repo](#clone-the-repo) 25 | - [Download the Dependencies](#download-the-dependencies) 26 | - [Run the App](#run-the-app) 27 | - [Build It!](#build-it) 28 | - [1. Create the App 🆕](#1-create-the-app-) 29 | - [1a. Setting up `Tailwind CSS`](#1a-setting-up-tailwind-css) 30 | - [Installing TailwindCSS](#installing-tailwindcss) 31 | - [Setup watcher, minification and loading Tailwind](#setup-watcher-minification-and-loading-tailwind) 32 | - [1b. Running the Phoenix app](#1b-running-the-phoenix-app) 33 | - [2. LiveView with cursors 🔺](#2-liveview-with-cursors-) 34 | - [2a. Tracking cursor movement](#2a-tracking-cursor-movement) 35 | - [3. Adding users :adult:](#3-adding-users-adult) 36 | - [3a. Adding usernames](#3a-adding-usernames) 37 | - [3b. Tracking who is online](#3b-tracking-who-is-online) 38 | - [4. Customization 🎨](#4-customization-) 39 | - [4a. Different colors](#4a-different-colors) 40 | - [5. Adding authentication 🔐](#5-adding-authentication-) 41 | - [5a. Add a login button](#5a-add-a-login-button) 42 | - [5b. Add `auth_plug`](#5b-add-auth_plug) 43 | - [5c. Showing username](#5c-showing-username) 44 | - [Credits 📝](#credits-) 45 | 46 |
47 | 48 | # Why? 🤷 49 | 50 | As we're building our 51 | [MVP](https://github.com/dwyl/mvp), 52 | we are always trying to leverage the _awesome_ real-time 53 | features of `Phoenix` and `LiveView`. 54 | 55 | Live cursor tracking will enable _us_ to create a 56 | team-friendly environment 57 | in which `people` can _see_ 58 | what the others are clicking on 59 | when collaborating in a prioritization 60 | (e.g. backlog grooming) exercise. 61 | 62 | # What? 💭 63 | 64 | This tutorial creates a stylized simple landing page 65 | showing the cursor of everyone that is connected 66 | to it. 67 | It should take you **20 minutes** 68 | to follow from start to finish. 69 | 70 | # Who? 👤 71 | 72 | This tutorial is aimed at `LiveView` beginners 73 | who want to understand the ins and outs, 74 | while sparkling a bit of 75 | [`TailwindCSS`](https://tailwindcss.com/) 76 | magic :sparkles:. 77 | 78 | If you are completely new to `Phoenix` and `LiveView`, 79 | we recommend you follow the **`LiveView` _Counter_ Tutorial**: 80 | [dwyl/phoenix-liveview-counter-tutorial](https://github.com/dwyl/phoenix-liveview-counter-tutorial) 81 | 82 | ### Prerequisites 83 | 84 | This tutorial requires you have `Elixir` and `Phoenix` installed. 85 | If you you don't, please see 86 | [how to install Elixir](https://github.com/dwyl/learn-elixir#installation) 87 | and 88 | [Phoenix](https://hexdocs.pm/phoenix/installation.html#phoenix). 89 | 90 | # How? 💻 91 | 92 | ## Step 0: Run the finished app locally 93 | 94 | To get a feel of what you are going to build and 95 | to be _make sure_ it's working in 1 minute, do the 96 | following steps: 97 | 98 | ### Clone the repo 99 | 100 | Run the following commands to clone the repo. 101 | 102 | ``` 103 | git clone https://github.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial.git 104 | cd phoenix-liveview-realtime-cursor-tracking-tutorial 105 | ``` 106 | 107 | ### Download the Dependencies 108 | 109 | Install the dependencies by running the command: 110 | 111 | ```sh 112 | mix setup 113 | ``` 114 | 115 | This will download dependencies 116 | and compile your files. 117 | It might take a few 118 | minutes! 119 | 120 | ### Run the App 121 | 122 | Start the Phoenix server by running the command: 123 | 124 | ```sh 125 | mix phx.server 126 | ``` 127 | 128 | Now you can visit 129 | [`localhost:4000`](http://localhost:4000) 130 | in your web browser. 131 | 132 | > 💡 Open a _second_ browser window or tab 133 | > (**in incognito mode**, if you want to), 134 | > and you will see the a new cursor with a new name! 135 | 136 | 137 | You should expect to see something similar to the following: 138 | 139 | ![cursor-tracking-demo-GIF](https://user-images.githubusercontent.com/194400/197960714-a82e945c-2511-4ff3-bbd1-47ed751ac3ce.gif) 140 | 141 | 142 | # Build It! 143 | 144 | Now that you've seen the app working, 145 | it's time to _build_ it from scratch! 146 | 147 | 148 | ## 1. Create the App 🆕 149 | 150 | In your terminal run the following `mix` command 151 | to generate the new Phoenix app: 152 | 153 | ```sh 154 | mix phx.new live_cursors --no-ecto --no-mailer --no-dashboard --no-gettext 155 | ``` 156 | 157 | This command will create a new `Phoenix` app 158 | and setup the dependencies 159 | (including the `LiveView` dependencies) 160 | The flags: 161 | `--no-ecto --no-mailer --no-dashboard --no-gettext` 162 | just mean we don't want a database, email, dashboard or translation. 163 | These are not needed in a simple demo/experiment app. 164 | 165 | When you see the following prompt in your terminal, 166 | press **`Y` to install the dependencies**. 167 | 168 | ```sh 169 | Fetch and install dependencies? [Yn] 170 | ``` 171 | 172 | Type Y followed by the Enter key. 173 | That will download all the necessary dependencies. 174 | 175 | ### 1a. Setting up `Tailwind CSS` 176 | 177 | We are going to be using `Tailwind` to style our page. 178 | If this is the first time using `Tailwind`, 179 | see: 180 | [dwyl/**learn-tailwind**](https://github.com/dwyl/learn-tailwind) 181 | for a primer. 182 | 183 | The reason we are using TailwindCSS is to showcase you 184 | how to also integrate a *mature* styling library and 185 | get it running with Phoenix so you can create your 186 | own awesome and beautiful web pages :smile:. 187 | 188 | #### Installing TailwindCSS 189 | Let's first add the TailwindCSS dependency to our project, 190 | by opening the `mix.exs` file and adding 191 | the following line to the `deps` section: 192 | 193 | ```elixir 194 | {:tailwind, "~> 0.1.9", runtime: Mix.env() == :dev}, 195 | ``` 196 | 197 | Next, in the `config/config.exs` file, 198 | let's specify the Tailwind version we are 199 | going to be using. 200 | 201 | ```elixir 202 | config :tailwind, 203 | version: "3.2.0", 204 | default: [ 205 | args: ~w( 206 | --config=tailwind.config.js 207 | --input=css/app.css 208 | --output=../priv/static/assets/app.css 209 | ), 210 | cd: Path.expand("../assets", __DIR__) 211 | ] 212 | ``` 213 | 214 | Now, simply run the following command to install 215 | the dependency: 216 | 217 | 218 | ```sh 219 | mix deps.get 220 | ``` 221 | 222 | And then run the following Tailwind tasks. These 223 | will download the standalone Tailwind CLI and 224 | generate a `tailwind.config.js` file 225 | in the `./assets` directory. 226 | 227 | ```sh 228 | mix tailwind.install 229 | mix tailwind default 230 | ``` 231 | 232 | ### Setup watcher, minification and loading Tailwind 233 | 234 | Throughout development we want Tailwind CLI 235 | to track our files for changes. For this, add 236 | the following watcher in `config/dev.exs` file. 237 | 238 | ```elixir 239 | watchers: [ 240 | //... 241 | tailwind: {Tailwind, :install_and_run, [:default, ~w(--watch)]}, 242 | ] 243 | ``` 244 | 245 | After developing our application, we want tailwind to 246 | minify our CSS files in production. For this to happen, 247 | update the following line in the `mix.exs` file. 248 | 249 | ```elixir 250 | defp aliases do 251 | [ 252 | setup: ["deps.get"], 253 | "assets.deploy": ["esbuild default --minify", "tailwind default --minify", "phx.digest"] 254 | ] 255 | end 256 | ``` 257 | 258 | All we have to do now is make sure tailwind classes 259 | are loaded in our `assets/css/app.css`. The tasks 260 | you ran previously probably already took care of this, 261 | but make sure you have these added to your file. 262 | 263 | ```elixir 264 | @import "tailwindcss/base"; 265 | @import "tailwindcss/components"; 266 | @import "tailwindcss/utilities"; 267 | 268 | //@import "./phoenix.css"; -> deleted 269 | ``` 270 | 271 | Also make sure your `assets/js/app.js` 272 | was changed as well. Make sure the 273 | `import "../css/app.css";` line is commented 274 | or removed. 275 | 276 | After all of this, you should be done! You can 277 | start styling your webpages with some sweet CSS :tada:. 278 | 279 | ### 1b. Running the Phoenix app 280 | 281 | To make sure everything is working properly, 282 | run the following: 283 | 284 | ```sh 285 | mix phx.server 286 | ``` 287 | 288 | If you visit [`localhost:4000`](http://localhost:4000), you'll 289 | see the following in your browser. 290 | 291 | phoenix_with_tailwind 292 | 293 | > Don't worry if this looks ugly. It's because 294 | we now use TailwindCSS. We're going to make it 295 | pretty in the next few minutes! 296 | 297 | ## 2. LiveView with cursors 🔺 298 | 299 | Let's start by adding a LiveView to our application. 300 | Let's switch the current default route to a new 301 | `live` route in the `lib/live_cursors_web/router.ex` file. 302 | 303 | ```elixir 304 | scope "/", LiveCursorsWeb do 305 | pipe_through :browser 306 | live "/", Cursors 307 | end 308 | ``` 309 | 310 | Next, we create a `live` folder in `lib/live_cursors_web/live`, 311 | and create a file called `cursors.ex` with the following code. 312 | We are placing assigning `x` and `y` to the socket, 313 | which will refer to the mouse position within the page. 314 | 315 | ```elixir 316 | defmodule LiveCursorsWeb.Cursors do 317 | use LiveCursorsWeb, :live_view 318 | 319 | def mount(_params, _session, socket) do 320 | {:ok, 321 | socket 322 | |> assign(:x, 50) 323 | |> assign(:y, 50) 324 | } 325 | end 326 | end 327 | ``` 328 | 329 | In the same folder, we create a `cursors.html.heex` file with the 330 | follow code: 331 | 332 | ``` 333 |
    334 |
  • 335 | 336 | 337 | 338 | 339 | 340 | 341 | 342 | 343 | 344 |
    • 345 |
346 | ``` 347 | 348 | > The reason we have the HTML template on a different file 349 | instead of using the `render` function with the `~H` sigil 350 | is purely for dev experience purposes. With VS Code, 351 | we can get TailwindCSS hints and code completion 352 | which we wouldn't otherwise using a `render` function 353 | in the `cursors.ex` file. 354 | 355 | Now delete all the code in the 356 | `lib/live_cursors_web/templates/page/index.html.heex` 357 | and change the `lib/live_cursors_web/templates/layout/root.html.heex` file. 358 | We just delete the header 359 | and render the content on our `cursors.html.heex` file. 360 | 361 | ```elixir 362 | 363 | 364 | 365 | 366 | 367 | 368 | 369 | <%= live_title_tag assigns[:page_title] || "LiveCursors", suffix: " · Phoenix Framework" %> 370 | 371 | 372 | 373 | 374 | <%= @inner_content %> 375 | 376 | 377 | ``` 378 | 379 | You should now see a cursor 380 | at the middle of the page. 381 | 382 | simple_cursor_middle 383 | 384 | 385 | > You can change your `svg` object to anything you like. 386 | > This custom cursor was created using [Figma](https://www.figma.com/). 387 | 388 | 389 | ### 2a. Tracking cursor movement 390 | 391 | We are going to use Javascript 392 | to track the mouse movement on the client 393 | and send it over to the Phoenix server 394 | we are building. 395 | 396 | We understand that the idea of LiveView 397 | is to do as much work on the server as possible, 398 | but in this specific scenario, that is not possible. 399 | 400 | Phoenix offers 401 | [options for client/server interoperability](https://hexdocs.pm/phoenix_live_view/js-interop.html), 402 | including **client hooks**. 403 | We are using the `phx-hook` binding for this. 404 | We are going to send events from Javascript 405 | to the server through this binding. 406 | 407 | In this case, we are using the `mousemove` 408 | event to send the updated coordinates to 409 | the server. 410 | For this, add the following code in the `assets/js/app.js`. 411 | 412 | ```javascript 413 | let Hooks = {}; 414 | 415 | Hooks.TrackClientCursor = { 416 | mounted() { 417 | document.addEventListener('mousemove', (e) => { 418 | const mouse_x = (e.pageX / window.innerWidth) * 100; // in % 419 | const mouse_y = (e.pageY / window.innerHeight) * 100; // in % 420 | this.pushEvent('cursor-move', { mouse_x, mouse_y }); 421 | }); 422 | } 423 | }; 424 | 425 | let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content") 426 | let liveSocket = new LiveSocket("/live", Socket, {hooks: Hooks, params: {_csrf_token: csrfToken}}) 427 | ``` 428 | 429 | In the previous code block, 430 | we track the mouse position within the page in percentage. 431 | This way, the mouse position 432 | is displayed correctly in any device. 433 | 434 | The `mousemove` event handler 435 | is added to the `Hook` object which, 436 | in turn, is passed through the `liveSocket`. 437 | 438 | After this, we need to *handle the event* in the 439 | `cursors.ex` file. Let's add the event handler with 440 | the following code: 441 | 442 | ```elixir 443 | def handle_event("cursor-move", %{"mouse_x" => x, "mouse_y" => y}, socket) do 444 | {:noreply, 445 | socket 446 | |> assign(:x, x) 447 | |> assign(:y, y) 448 | } 449 | end 450 | ``` 451 | 452 | In the `cursors.html.heex` file, 453 | let's change the first two lines with the 454 | following piece of code: 455 | 456 | ``` 457 |
    458 |
  • 459 | ``` 460 | 461 | Here, we are using the `phx-hook` binding 462 | with the hook created in the `app.js` file. 463 | Make sure to ann an `id` to the element so that LiveView 464 | can properly identify it. 465 | 466 | If you restart the server and open the browser again, 467 | the cursor should follow your mouse movements. 468 | 469 | cursor_tracking 470 | 471 | 472 | ## 3. Adding users :adult: 473 | We have our own mouse cursor moving. We need to 474 | *broadcast* this movement information to every user 475 | that joins the channel. Additionally, we need to 476 | identify who in the channel so we show their respective 477 | cursor with their name. 478 | 479 | In our application, whenever a user visits the website, 480 | a session will be created and we'll assign a random 481 | username to the user who joined. 482 | 483 | ### 3a. Adding usernames 484 | 485 | To generate random names, we'll be using the 486 | [mnemonic_slugs](https://github.com/devshane/mnemonic_slugs) 487 | library. To do this, let's install it. 488 | Add the following line to the `mix.exs` file. 489 | 490 | ```elixir 491 | {:mnemonic_slugs, "~> 0.0.3"}, 492 | ``` 493 | 494 | and run the command below to install it. 495 | 496 | ```sh 497 | mix deps.get 498 | ``` 499 | 500 | We then change our `cursors.ex` file to 501 | *create* a new username to the person joining 502 | the page and add it to the socket assigns. 503 | Your `mount/3` function should now look 504 | like this. 505 | 506 | ```elixir 507 | def mount(_params, _session, socket) do 508 | 509 | username = MnemonicSlugs.generate_slug 510 | 511 | {:ok, 512 | socket 513 | |> assign(:x, 50) 514 | |> assign(:y, 50) 515 | |> assign(:username, username) 516 | } 517 | end 518 | ``` 519 | 520 | Now let's show this username! Head to 521 | `cursors.html.heex` and let's add a simple 522 | `` with the `@username` assign we just 523 | added to the socket. The file should look 524 | like this. 525 | 526 | ```elixir 527 |
      528 |
    • 529 | 530 | 531 | 532 | 533 | 534 | 535 | 536 | 537 | 538 | 539 | 540 | <%= @username %> 541 | 542 |
      • 543 |
    544 | ``` 545 | 546 | 547 | If you restart the server and open the browser, 548 | you will see the cursor and a random username 549 | moving along with it. 550 | 551 | cursor_with_username 552 | 553 | ### 3b. Tracking who is online 554 | 555 | This is the most exciting part of the tutorial. 556 | We are going to have different users have their 557 | cursors and see them in real-time! For this, we 558 | need to be able to track *who is online in 559 | the channel*. For this, we are going to be 560 | using **Phoenix Presence**. We will use Presence 561 | to store information about the *coordinates* and *username* in the Presence channel. 562 | 563 | > Phoenix Presence is a package within the Phoenix 564 | ecosystem that allows us to track processes and users 565 | that are within a channel. It provides many features. 566 | We recommend reading [their documentation](https://hexdocs.pm/phoenix/Phoenix.Presence.html) 567 | if you are interested in learning more. 568 | 569 | Let's start by adding PResence 570 | to our application. Run the following command. 571 | 572 | ```sh 573 | mix phx.gen.presence 574 | ``` 575 | 576 | After installing, the terminal should ask you to 577 | follow some instructions. 578 | 579 | ```sh 580 | Add your new module to your supervision tree, 581 | in lib/live_cursors/application.ex: 582 | 583 | children = [ 584 | ... 585 | LiveCursorsWeb.Presence 586 | ] 587 | ``` 588 | 589 | Let's follow the instructions and do 590 | exactly that. Open `lib/live_cursors/application.ex` 591 | and add `LiveCursorWeb.Presence` to the `children` array. 592 | 593 | With Presence installed, let's now work on 594 | the `cursors.ex` file. First, let's add 595 | `alias LiveCursorsWeb.Presence` 596 | after declaring the module so it's easier 597 | to write our code. 598 | 599 | In the `mount/3` function, we will initialize Presence 600 | for the channel through the `Presence.track/4` function. 601 | We will define a constant `@channel_topic` 602 | and use it in the function as well. Change the 603 | code in `cursors.ex` file so the mounting function 604 | looks like such: 605 | 606 | ```elixir 607 | defmodule LiveCursorsWeb.Cursors do 608 | alias LiveCursorsWeb.Presence 609 | use LiveCursorsWeb, :live_view 610 | 611 | @channel_topic "cursor_page" 612 | 613 | def mount(_params, _session, socket) do 614 | 615 | username = MnemonicSlugs.generate_slug 616 | 617 | Presence.track(self(), @channel_topic, socket.id, %{ 618 | socket_id: socket.id, 619 | x: 50, 620 | y: 50, 621 | username: username, 622 | }) 623 | 624 | LiveCursorsWeb.Endpoint.subscribe(@channel_topic) 625 | 626 | initial_users = 627 | Presence.list(@channel_topic) 628 | |> Enum.map(fn {_, data} -> data[:metas] |> List.first() end) 629 | 630 | updated = 631 | socket 632 | |> assign(:username, username) 633 | |> assign(:users, initial_users) 634 | |> assign(:socket_id, socket.id) 635 | 636 | {:ok, updated} 637 | end 638 | ``` 639 | 640 | To further explain what we just wrote, 641 | we are telling Presence to track ourselves, within 642 | the channel, the `id` of the socket and adding 643 | metadata we want to track, namely the `username` 644 | and the mouse coordinates (`x` and `y`). 645 | Additionally, whenever the user acecss the page, 646 | it **subscribes** to the channel events 647 | in the `LiveCursorsWeb.Endpoint.subscribe(@channel_topic)`. 648 | After this, we create an `initial_users` variable, 649 | where we use the data from Presence and obtain the list of 650 | connected users and their respective metadata. 651 | At last, we assign the `user` data 652 | and the `initial_users` 653 | and `socket.id` data to the socket assigns, 654 | so we can access this information 655 | in the `cursors.html.heex` file. 656 | 657 | Speaking of which, let's change the `cursors.html.heex` file 658 | to reflect these changes. We are going to iterate over 659 | the list of users that are online and render a cursor and name 660 | for each one. Your file should now look like the following: 661 | 662 | ```elixir 663 |
      664 | <%= for user <- @users do %> 665 |
    • 666 | 667 | 668 | 669 | 670 | 671 | 672 | 673 | 674 | 675 | 676 | <%= user.username %> 677 | 678 |
      • 679 | <% end %> 680 |
    681 | ``` 682 | 683 | After this, we ought to handle the `cursor-move` event coming 684 | from the client and update the coordinates in the list of 685 | active users in the channel with the `socket.id` as an identifier. 686 | Change the `handle_event/1` function to this. 687 | 688 | ```elixir 689 | def handle_event("cursor-move", %{"mouse_x" => x, "mouse_y" => y}, socket) do 690 | key = socket.id 691 | payload = %{x: x, y: y} 692 | 693 | metas = 694 | Presence.get_by_key(@channel_topic, key)[:metas] 695 | |> List.first() 696 | |> Map.merge(payload) 697 | 698 | Presence.update(self(), @channel_topic, key, metas) 699 | 700 | {:noreply, socket} 701 | end 702 | ``` 703 | 704 | The last thing that is left is to make our LiveView *react* 705 | to whenever a user joins or leaves the channel. 706 | Therefore, we sync the socket with the info available 707 | in the Presence channel. The following function 708 | **updates the list of active users** whenever someone 709 | joins or leaves the channel. 710 | 711 | ```elixir 712 | def handle_info(%{event: "presence_diff", payload: _payload}, socket) do 713 | users = 714 | Presence.list(@channel_topic) 715 | |> Enum.map(fn {_, data} -> data[:metas] |> List.first() end) 716 | 717 | updated = 718 | socket 719 | |> assign(users: users) 720 | |> assign(socket_id: socket.id) 721 | 722 | {:noreply, updated} 723 | end 724 | ``` 725 | 726 | That was a lot! Now let's restart the server 727 | and open two different tabs. You will see the cursor 728 | moving in both tabs **in real-time**. Awesome stuff! 729 | 730 | multiple_users 731 | 732 | 733 | ## 4. Customization 🎨 734 | 735 | Now that we got the main feature working, let's customize 736 | our page so it looks better! 🎨 737 | 738 | Let's add a background to the page. 739 | We used [heropatterns.com](https://heropatterns.com/) 740 | to create our background pattern. 741 | You can customize the background to your liking 742 | and then head to `assets/css/app.cs` and create a class 743 | `.bg-pattern` and paste the pattern contents. 744 | 745 | Now, let's change the `cursors.html.heex` to add a text 746 | and add the background. CHange the file so it looks like this: 747 | 748 | ``` 749 |
    750 |
    751 |

    just use your mouse

    752 |
    753 |
      754 | <%= for user <- @users do %> 755 |
    • 756 | 757 | 758 | 759 | 760 | 761 | 762 | 763 | 764 | 765 | 766 | <%= user.username %> 767 | 768 |
      • 769 | <% end %> 770 |
    771 |
    772 | ``` 773 | 774 | Notice the `bg-pattern` class being used in the first line. 775 | 776 | After restarting the server, your webpage should look like this: 777 | 778 | styling_page 779 | 780 | ### 4a. Different colors 781 | Let's add some finishing touches. Each user will have its own 782 | color associated. First, let's add the 783 | [`random_color`](https://hexdocs.pm/random_color/RandomColor.html) 784 | library. 785 | 786 | ```elixir 787 | {:random_color, "~> 0.1.0"} 788 | ``` 789 | 790 | Now, in the `cursors.ex` file, the same way we generate 791 | a random username everytime a user joins and add it to the 792 | socket assigns, let's do the same for the color. 793 | Make the necessary changes to the file so the `mount/3` function 794 | looks like this. 795 | 796 | ```elixir 797 | def mount(_params, _session, socket) do 798 | 799 | username = MnemonicSlugs.generate_slug 800 | color = RandomColor.hex() 801 | 802 | Presence.track(self(), @channel_topic, socket.id, %{ 803 | socket_id: socket.id, 804 | x: 50, 805 | y: 50, 806 | username: username, 807 | color: color 808 | }) 809 | ``` 810 | 811 | Now, all that's left for us to do 812 | is changing the `cursors.html.heex` to get the color and 813 | show it to the client. Change the `` element 814 | of the username and change the background color 815 | according to the `color` assign. It should look look this: 816 | 817 | ``` 818 | 819 | <%= user.username %> 820 | 821 | ``` 822 | 823 | And you should see a different color under each user's username. 824 | 825 | different_colors 826 | 827 | 828 | If you want to remove the cursor pointer and just have the `svg` 829 | element as your cursor, simply add the following piece of code 830 | to the `assets/css/app.css` file: 831 | 832 | ```css 833 | .body { 834 | cursor: none 835 | } 836 | ``` 837 | 838 | ## 5. Adding authentication 🔐 839 | 840 | Right now, the app assigns a random name 841 | to the user once he starts using the app. 842 | However, it would be interesting 843 | for the user to **login** using 844 | a given provider (such as Google or Github) 845 | and show the related username for everyone to see! 846 | 847 | For this, we can leverage the 848 | [`auth_plug`](https://github.com/dwyl/auth_plug) 849 | package to easily integrate this feature. 850 | 851 | Let's do this! 852 | 853 | ### 5a. Add a login button 854 | 855 | We should add a way for the user to login. 856 | Let's add a button to the canvas. 857 | In the `lib/live_cursors_web/live/cursors.html.heex` file, 858 | change it so it looks like the following. 859 | 860 | ```html 861 |
    862 |
    863 |

    just use your mouse

    864 |
    865 | 866 | 867 | 877 | 878 |
      879 | <%= for user <- @users do %> 880 |
    • 881 | 882 | 883 | 884 | 885 | 886 | 887 | 888 | 889 | 890 | 891 | <%= user.username %> 892 | 893 |
      • 894 | <% end %> 895 |
    896 |
    897 | ``` 898 | 899 | We've simply added a button that, 900 | once clicked, creates a `login` event. 901 | We are going to eventually handle this event, 902 | but before that, 903 | we need to add `auth_plug` to our project. 904 | 905 | ### 5b. Add `auth_plug` 906 | 907 | Let's get this up and running fast! 908 | Inside the `mix.exs` file, 909 | add the following inside the `deps` section. 910 | 911 | ```elixir 912 | {:auth_plug, "~> 1.5"}, 913 | ``` 914 | 915 | and run 916 | 917 | ```sh 918 | mix deps.get 919 | ``` 920 | 921 | Afterwards, visit https://authdemo.fly.dev/apps/new, 922 | sign in using a preferred provider 923 | and create an app for the `localhost:4000` URL, 924 | the same URL you are running the app from. 925 | 926 | ![flyapp](https://user-images.githubusercontent.com/17494745/203396767-a73a6c5e-f484-49a2-9ece-225e5b09f740.png) 927 | 928 | After creating an app, 929 | you should be prompted with an image similar 930 | to the following. 931 | 932 | ![token](https://user-images.githubusercontent.com/194400/202419365-e06c43d6-c537-4646-a1a3-90320fb3aa59.png) 933 | 934 | You now are going to run the app with this `AUTH_API_KEY` 935 | environment variable. 936 | To run the app with this environment variable, 937 | 938 | ```sh 939 | export AUTH_API_KEY=2cfxNaMmkvwKmHncbYAL58mLZMs/2cfxNa4RnU12gYYSwPvp2hSPFdVDcbdK/authdemo.fly.dev 940 | 941 | mix phx.server 942 | ``` 943 | 944 | Now, let's create the `AuthController`. 945 | This controller will be used to login 946 | and logout the user in the app. 947 | 948 | Create a file 949 | `lib/live_cursors_web/controllers/auth_controller.ex` 950 | and add the following. 951 | 952 | ```elixir 953 | defmodule LiveCursorsWeb.AuthController do 954 | use LiveCursorsWeb, :controller 955 | import Phoenix.LiveView, only: [assign_new: 3] 956 | 957 | def add_assigns(:default, _params, %{"jwt" => jwt} = _session, socket) do 958 | {:cont, AuthPlug.assign_jwt_to_socket(socket, &assign_new/3, jwt)} 959 | end 960 | 961 | def add_assigns(:default, _params, _session, socket) do 962 | {:cont, assign_new(socket, :loggedin, fn -> false end)} 963 | end 964 | 965 | def login(conn, _params) do 966 | redirect(conn, external: AuthPlug.get_auth_url(conn, "/")) 967 | end 968 | 969 | def logout(conn, _params) do 970 | conn 971 | |> AuthPlug.logout() 972 | |> put_status(302) 973 | |> redirect(to: "/") 974 | end 975 | end 976 | ``` 977 | 978 | The `add_assigns/3` functions will be used 979 | to alter the socket with auth assigns. 980 | We will be using a `loggedin` and `person` assign, 981 | where the latter has information about 982 | the user that is logged in. 983 | 984 | Lastly, open the `router.ex` file. 985 | We are going to create an [*Optional Path*](https://github.com/dwyl/auth_plug#optional-auth) 986 | pipeline, which will allow users to access a route, 987 | even if they are not logged in. 988 | 989 | Change the code so it looks like the following. 990 | 991 | ```elixir 992 | pipeline :authOptional, do: plug(AuthPlugOptional) 993 | 994 | scope "/", LiveCursorsWeb do 995 | pipe_through :browser 996 | pipe_through :protect_from_forgery 997 | pipe_through :authOptional 998 | 999 | live "/", Cursors 1000 | get "/login", AuthController, :login 1001 | get "/logout", AuthController, :logout 1002 | end 1003 | ``` 1004 | 1005 | And you should be sorted! 1006 | If you had any trouble setting `auth_plug` running, 1007 | [check their docs](https://github.com/dwyl/phoenix-chat-example/blob/add-auth/auth.md), 1008 | as the guide is more thorough there. 1009 | 1010 | ### 5c. Showing username 1011 | 1012 | Let's make the necessary changes so, 1013 | after logging in, the username of the user 1014 | is shown next to the cursor. 1015 | 1016 | Firstly, let's handle the `login` event 1017 | we defined earlier. 1018 | 1019 | In the `lib/live_cursors_web/live/cursors.ex` file, 1020 | add the following handler. 1021 | 1022 | ```elixir 1023 | def handle_event("login", _value, socket) do 1024 | {:noreply, push_redirect(socket, to: "/login")} 1025 | end 1026 | 1027 | def handle_event("logout", _value, socket) do 1028 | {:noreply, push_redirect(socket, to: "/logout")} 1029 | end 1030 | ``` 1031 | 1032 | The `login` will redirect the user to the `/login` URL path, 1033 | which is handled by the `AuthController`. 1034 | The same thing happens to the `logout` event. 1035 | 1036 | Now let's change the UI. 1037 | Remember the button we added in the UI previously? 1038 | Let's change it. 1039 | We are going to display a different button 1040 | depending on whether the user is logged in 1041 | or not. 1042 | Change `lib/live_cursors_web/live/cursors.html.heex` 1043 | so it looks like the following. 1044 | 1045 | ```html 1046 |
    1047 |
    1048 |

    just use your mouse

    1049 |
    1050 | 1051 | 1052 | <%= if @loggedin do %> 1053 | 1063 | <% else %> 1064 | 1074 | <% end %> 1075 | 1076 |
      1077 | <%= for user <- @users do %> 1078 |
    • 1079 | 1080 | 1081 | 1082 | 1083 | 1084 | 1085 | 1086 | 1087 | 1088 | 1089 | <%= user.username %> 1090 | 1091 |
      • 1092 | <% end %> 1093 |
    1094 |
    1095 | ``` 1096 | 1097 | We are using the `loggedin` socket assign 1098 | to display a button saying `Login` or `Logout`. 1099 | 1100 | The last thing to do is 1101 | changing the username of the user! 1102 | 1103 | In the `lib/live_cursors_web/live/cursors.ex` file, 1104 | change `mount/3` so it looks like this. 1105 | 1106 | ```elixir 1107 | def mount(params, session, socket) do 1108 | 1109 | # Add auth assigns to socket 1110 | {_cont, socket} = AuthController.add_assigns(:default, params, session, socket) 1111 | 1112 | username = if (socket.assigns.loggedin) do 1113 | socket.assigns.person.username || socket.assigns.person.givenName || "guest" 1114 | else 1115 | MnemonicSlugs.generate_slug 1116 | end 1117 | 1118 | color = RandomColor.hex() 1119 | 1120 | Presence.track(self(), @channel_topic, socket.id, %{ 1121 | socket_id: socket.id, 1122 | x: 50, 1123 | y: 50, 1124 | username: username, 1125 | color: color 1126 | }) 1127 | 1128 | LiveCursorsWeb.Endpoint.subscribe(@channel_topic) 1129 | 1130 | initial_users = 1131 | Presence.list(@channel_topic) 1132 | |> Enum.map(fn {_, data} -> data[:metas] |> List.first() end) 1133 | 1134 | updated = 1135 | socket 1136 | |> assign(:username, username) 1137 | |> assign(:users, initial_users) 1138 | |> assign(:socket_id, socket.id) 1139 | 1140 | {:ok, updated} 1141 | end 1142 | ``` 1143 | 1144 | We are calling the `add_assigns/4` method in `AuthController` 1145 | so it adds the proper auth socket assigns. 1146 | After adding these, 1147 | we check if the user is logged in or not. 1148 | If he is, we use the `username` or `givenName` field. 1149 | 1150 | And that's it! 1151 | You should now see your username on the screen, 1152 | like so! 1153 | 1154 | ![auth_demo](https://user-images.githubusercontent.com/17494745/203618159-0f9ec94f-44b2-4fc9-b5e8-a2c5eb097c53.gif) 1155 | 1156 | # Credits 📝 1157 | 1158 | This tutorial was inspired by 1159 | [Koen van Gilst's](https://koenvangilst.nl/blog/phoenix-liveview-cursors) 1160 | walkthrough. 1161 | Be sure to follow him: 1162 | [**`@vnglst`**](https://github.com/vnglst) 1163 | -------------------------------------------------------------------------------- /assets/css/app.css: -------------------------------------------------------------------------------- 1 | @import "tailwindcss/base"; 2 | @import "tailwindcss/components"; 3 | @import "tailwindcss/utilities"; 4 | 5 | /* This file is for your main application CSS */ 6 | 7 | /* Adding topogrophy for background */ 8 | .body { 9 | cursor: none 10 | } 11 | 12 | .bg-pattern { 13 | background-color: #ffffff; 14 | background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='600' height='600' viewBox='0 0 600 600'%3E%3Cpath fill='%2332d8d6' fill-opacity='0.12' d='M600 325.1v-1.17c-6.5 3.83-13.06 7.64-14.68 8.64-10.6 6.56-18.57 12.56-24.68 19.09-5.58 5.95-12.44 10.06-22.42 14.15-1.45.6-2.96 1.2-4.83 1.9l-4.75 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4.17-.97 5.72l2.26 1.4 1.99 1.28c1.47.93 2.48 1.5 3.47 1.91 4.9 2.07 9.96.07 22.72-9.56 5.02-3.79 11.15-7 19.1-10.28 3.76-1.55 17.3-6.6 20-7.72 9.5-3.97 13.14-7.2 11.73-11.44-.9-2.71-2.25-3.8-4.3-3.79-1.6 0-2.15.17-7.36 2.05-8.17 2.94-13.34 3.14-19.16-1.01z'%3E%3C/path%3E%3C/svg%3E"); 15 | } 16 | 17 | -------------------------------------------------------------------------------- /assets/js/app.js: -------------------------------------------------------------------------------- 1 | // We import the CSS which is extracted to its own file by esbuild. 2 | // Remove this line if you add a your own CSS build pipeline (e.g postcss). 3 | 4 | // If you want to use Phoenix channels, run `mix help phx.gen.channel` 5 | // to get started and then uncomment the line below. 6 | // import "./user_socket.js" 7 | 8 | // You can include dependencies in two ways. 9 | // 10 | // The simplest option is to put them in assets/vendor and 11 | // import them using relative paths: 12 | // 13 | // import "../vendor/some-package.js" 14 | // 15 | // Alternatively, you can `npm install some-package --prefix assets` and import 16 | // them using a path starting with the package name: 17 | // 18 | // import "some-package" 19 | // 20 | 21 | // Include phoenix_html to handle method=PUT/DELETE in forms and buttons. 22 | import "phoenix_html" 23 | // Establish Phoenix Socket and LiveView configuration. 24 | import {Socket} from "phoenix" 25 | import {LiveSocket} from "phoenix_live_view" 26 | import topbar from "../vendor/topbar" 27 | 28 | let csrfToken = document.querySelector("meta[name='csrf-token']").getAttribute("content") 29 | 30 | let Hooks = {}; 31 | 32 | Hooks.TrackClientCursor = { 33 | mounted() { 34 | document.addEventListener('mousemove', (e) => { 35 | const mouse_x = (e.pageX / window.innerWidth) * 100; // in % 36 | const mouse_y = (e.pageY / window.innerHeight) * 100; // in % 37 | this.pushEvent('cursor-move', { mouse_x, mouse_y }); 38 | }); 39 | } 40 | }; 41 | 42 | let liveSocket = new LiveSocket("/live", Socket, {hooks: Hooks, params: {_csrf_token: csrfToken}}) 43 | 44 | // Show progress bar on live navigation and form submits 45 | topbar.config({barColors: {0: "#29d"}, shadowColor: "rgba(0, 0, 0, .3)"}) 46 | window.addEventListener("phx:page-loading-start", info => topbar.show()) 47 | window.addEventListener("phx:page-loading-stop", info => topbar.hide()) 48 | 49 | // connect if there are any LiveViews on the page 50 | liveSocket.connect() 51 | 52 | // expose liveSocket on window for web console debug logs and latency simulation: 53 | // >> liveSocket.enableDebug() 54 | // >> liveSocket.enableLatencySim(1000) // enabled for duration of browser session 55 | // >> liveSocket.disableLatencySim() 56 | window.liveSocket = liveSocket 57 | 58 | -------------------------------------------------------------------------------- /assets/tailwind.config.js: -------------------------------------------------------------------------------- 1 | // See the Tailwind configuration guide for advanced usage 2 | // https://tailwindcss.com/docs/configuration 3 | module.exports = { 4 | content: ['./js/**/*.js', '../lib/*_web.ex', '../lib/*_web/**/*.*ex'], 5 | theme: { 6 | extend: {} 7 | }, 8 | }; -------------------------------------------------------------------------------- /assets/vendor/topbar.js: -------------------------------------------------------------------------------- 1 | /** 2 | * @license MIT 3 | * topbar 1.0.0, 2021-01-06 4 | * https://buunguyen.github.io/topbar 5 | * Copyright (c) 2021 Buu Nguyen 6 | */ 7 | (function (window, document) { 8 | "use strict"; 9 | 10 | // https://gist.github.com/paulirish/1579671 11 | (function () { 12 | var lastTime = 0; 13 | var vendors = ["ms", "moz", "webkit", "o"]; 14 | for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) { 15 | window.requestAnimationFrame = 16 | window[vendors[x] + "RequestAnimationFrame"]; 17 | window.cancelAnimationFrame = 18 | window[vendors[x] + "CancelAnimationFrame"] || 19 | window[vendors[x] + "CancelRequestAnimationFrame"]; 20 | } 21 | if (!window.requestAnimationFrame) 22 | window.requestAnimationFrame = function (callback, element) { 23 | var currTime = new Date().getTime(); 24 | var timeToCall = Math.max(0, 16 - (currTime - lastTime)); 25 | var id = window.setTimeout(function () { 26 | callback(currTime + timeToCall); 27 | }, timeToCall); 28 | lastTime = currTime + timeToCall; 29 | return id; 30 | }; 31 | if (!window.cancelAnimationFrame) 32 | window.cancelAnimationFrame = function (id) { 33 | clearTimeout(id); 34 | }; 35 | })(); 36 | 37 | var canvas, 38 | progressTimerId, 39 | fadeTimerId, 40 | currentProgress, 41 | showing, 42 | addEvent = function (elem, type, handler) { 43 | if (elem.addEventListener) elem.addEventListener(type, handler, false); 44 | else if (elem.attachEvent) elem.attachEvent("on" + type, handler); 45 | else elem["on" + type] = handler; 46 | }, 47 | options = { 48 | autoRun: true, 49 | barThickness: 3, 50 | barColors: { 51 | 0: "rgba(26, 188, 156, .9)", 52 | ".25": "rgba(52, 152, 219, .9)", 53 | ".50": "rgba(241, 196, 15, .9)", 54 | ".75": "rgba(230, 126, 34, .9)", 55 | "1.0": "rgba(211, 84, 0, .9)", 56 | }, 57 | shadowBlur: 10, 58 | shadowColor: "rgba(0, 0, 0, .6)", 59 | className: null, 60 | }, 61 | repaint = function () { 62 | canvas.width = window.innerWidth; 63 | canvas.height = options.barThickness * 5; // need space for shadow 64 | 65 | var ctx = canvas.getContext("2d"); 66 | ctx.shadowBlur = options.shadowBlur; 67 | ctx.shadowColor = options.shadowColor; 68 | 69 | var lineGradient = ctx.createLinearGradient(0, 0, canvas.width, 0); 70 | for (var stop in options.barColors) 71 | lineGradient.addColorStop(stop, options.barColors[stop]); 72 | ctx.lineWidth = options.barThickness; 73 | ctx.beginPath(); 74 | ctx.moveTo(0, options.barThickness / 2); 75 | ctx.lineTo( 76 | Math.ceil(currentProgress * canvas.width), 77 | options.barThickness / 2 78 | ); 79 | ctx.strokeStyle = lineGradient; 80 | ctx.stroke(); 81 | }, 82 | createCanvas = function () { 83 | canvas = document.createElement("canvas"); 84 | var style = canvas.style; 85 | style.position = "fixed"; 86 | style.top = style.left = style.right = style.margin = style.padding = 0; 87 | style.zIndex = 100001; 88 | style.display = "none"; 89 | if (options.className) canvas.classList.add(options.className); 90 | document.body.appendChild(canvas); 91 | addEvent(window, "resize", repaint); 92 | }, 93 | topbar = { 94 | config: function (opts) { 95 | for (var key in opts) 96 | if (options.hasOwnProperty(key)) options[key] = opts[key]; 97 | }, 98 | show: function () { 99 | if (showing) return; 100 | showing = true; 101 | if (fadeTimerId !== null) window.cancelAnimationFrame(fadeTimerId); 102 | if (!canvas) createCanvas(); 103 | canvas.style.opacity = 1; 104 | canvas.style.display = "block"; 105 | topbar.progress(0); 106 | if (options.autoRun) { 107 | (function loop() { 108 | progressTimerId = window.requestAnimationFrame(loop); 109 | topbar.progress( 110 | "+" + 0.05 * Math.pow(1 - Math.sqrt(currentProgress), 2) 111 | ); 112 | })(); 113 | } 114 | }, 115 | progress: function (to) { 116 | if (typeof to === "undefined") return currentProgress; 117 | if (typeof to === "string") { 118 | to = 119 | (to.indexOf("+") >= 0 || to.indexOf("-") >= 0 120 | ? currentProgress 121 | : 0) + parseFloat(to); 122 | } 123 | currentProgress = to > 1 ? 1 : to; 124 | repaint(); 125 | return currentProgress; 126 | }, 127 | hide: function () { 128 | if (!showing) return; 129 | showing = false; 130 | if (progressTimerId != null) { 131 | window.cancelAnimationFrame(progressTimerId); 132 | progressTimerId = null; 133 | } 134 | (function loop() { 135 | if (topbar.progress("+.1") >= 1) { 136 | canvas.style.opacity -= 0.05; 137 | if (canvas.style.opacity <= 0.05) { 138 | canvas.style.display = "none"; 139 | fadeTimerId = null; 140 | return; 141 | } 142 | } 143 | fadeTimerId = window.requestAnimationFrame(loop); 144 | })(); 145 | }, 146 | }; 147 | 148 | if (typeof module === "object" && typeof module.exports === "object") { 149 | module.exports = topbar; 150 | } else if (typeof define === "function" && define.amd) { 151 | define(function () { 152 | return topbar; 153 | }); 154 | } else { 155 | this.topbar = topbar; 156 | } 157 | }.call(this, window, document)); 158 | -------------------------------------------------------------------------------- /config/config.exs: -------------------------------------------------------------------------------- 1 | # This file is responsible for configuring your application 2 | # and its dependencies with the aid of the Config module. 3 | # 4 | # This configuration file is loaded before any dependency and 5 | # is restricted to this project. 6 | 7 | # General application configuration 8 | import Config 9 | 10 | # Configures the endpoint 11 | config :live_cursors, LiveCursorsWeb.Endpoint, 12 | url: [host: "localhost"], 13 | render_errors: [view: LiveCursorsWeb.ErrorView, accepts: ~w(html json), layout: false], 14 | pubsub_server: LiveCursors.PubSub, 15 | live_view: [signing_salt: "NhaSZ5KU"] 16 | 17 | 18 | # Configure esbuild (the version is required) 19 | config :esbuild, 20 | version: "0.14.29", 21 | default: [ 22 | args: 23 | ~w(js/app.js --bundle --target=es2017 --outdir=../priv/static/assets --external:/fonts/* --external:/images/*), 24 | cd: Path.expand("../assets", __DIR__), 25 | env: %{"NODE_PATH" => Path.expand("../deps", __DIR__)} 26 | ] 27 | 28 | # Configures Elixir's Logger 29 | config :logger, :console, 30 | format: "$time $metadata[$level] $message\n", 31 | metadata: [:request_id] 32 | 33 | # Configuring TailwindCSS 34 | config :tailwind, 35 | version: "3.0.7", 36 | default: [ 37 | args: ~w( 38 | --config=tailwind.config.js 39 | --input=css/app.css 40 | --output=../priv/static/assets/app.css 41 | ), 42 | cd: Path.expand("../assets", __DIR__) 43 | ] 44 | 45 | # Use Jason for JSON parsing in Phoenix 46 | config :phoenix, :json_library, Jason 47 | 48 | # Import environment specific config. This must remain at the bottom 49 | # of this file so it overrides the configuration defined above. 50 | import_config "#{config_env()}.exs" 51 | -------------------------------------------------------------------------------- /config/dev.exs: -------------------------------------------------------------------------------- 1 | import Config 2 | 3 | # For development, we disable any cache and enable 4 | # debugging and code reloading. 5 | # 6 | # The watchers configuration can be used to run external 7 | # watchers to your application. For example, we use it 8 | # with esbuild to bundle .js and .css sources. 9 | config :live_cursors, LiveCursorsWeb.Endpoint, 10 | # Binding to loopback ipv4 address prevents access from other machines. 11 | # Change to `ip: {0, 0, 0, 0}` to allow access from other machines. 12 | http: [ip: {127, 0, 0, 1}, port: 4000], 13 | check_origin: false, 14 | code_reloader: true, 15 | debug_errors: true, 16 | secret_key_base: "+ygUFnI/BEb3N4JJBNIurSlZ3tVZJdnKHsqZVedjMTr2j/I6gVrFNmSVFFErV9qp", 17 | watchers: [ 18 | # Start the esbuild watcher by calling Esbuild.install_and_run(:default, args) 19 | tailwind: {Tailwind, :install_and_run, [:default, ~w(--watch)]}, 20 | esbuild: {Esbuild, :install_and_run, [:default, ~w(--sourcemap=inline --watch)]} 21 | ] 22 | 23 | # ## SSL Support 24 | # 25 | # In order to use HTTPS in development, a self-signed 26 | # certificate can be generated by running the following 27 | # Mix task: 28 | # 29 | # mix phx.gen.cert 30 | # 31 | # Note that this task requires Erlang/OTP 20 or later. 32 | # Run `mix help phx.gen.cert` for more information. 33 | # 34 | # The `http:` config above can be replaced with: 35 | # 36 | # https: [ 37 | # port: 4001, 38 | # cipher_suite: :strong, 39 | # keyfile: "priv/cert/selfsigned_key.pem", 40 | # certfile: "priv/cert/selfsigned.pem" 41 | # ], 42 | # 43 | # If desired, both `http:` and `https:` keys can be 44 | # configured to run both http and https servers on 45 | # different ports. 46 | 47 | # Watch static and templates for browser reloading. 48 | config :live_cursors, LiveCursorsWeb.Endpoint, 49 | live_reload: [ 50 | patterns: [ 51 | ~r"priv/static/.*(js|css|png|jpeg|jpg|gif|svg)$", 52 | ~r"priv/gettext/.*(po)$", 53 | ~r"lib/live_cursors_web/(live|views)/.*(ex)$", 54 | ~r"lib/live_cursors_web/templates/.*(eex)$" 55 | ] 56 | ] 57 | 58 | # Do not include metadata nor timestamps in development logs 59 | config :logger, :console, format: "[$level] $message\n" 60 | 61 | # Set a higher stacktrace during development. Avoid configuring such 62 | # in production as building large stacktraces may be expensive. 63 | config :phoenix, :stacktrace_depth, 20 64 | 65 | # Initialize plugs at runtime for faster development compilation 66 | config :phoenix, :plug_init_mode, :runtime 67 | -------------------------------------------------------------------------------- /config/prod.exs: -------------------------------------------------------------------------------- 1 | import Config 2 | 3 | # For production, don't forget to configure the url host 4 | # to something meaningful, Phoenix uses this information 5 | # when generating URLs. 6 | # 7 | # Note we also include the path to a cache manifest 8 | # containing the digested version of static files. This 9 | # manifest is generated by the `mix phx.digest` task, 10 | # which you should run after static files are built and 11 | # before starting your production server. 12 | config :live_cursors, LiveCursorsWeb.Endpoint, 13 | cache_static_manifest: "priv/static/cache_manifest.json" 14 | 15 | # Do not print debug messages in production 16 | config :logger, level: :info 17 | 18 | # ## SSL Support 19 | # 20 | # To get SSL working, you will need to add the `https` key 21 | # to the previous section and set your `:url` port to 443: 22 | # 23 | # config :live_cursors, LiveCursorsWeb.Endpoint, 24 | # ..., 25 | # url: [host: "example.com", port: 443], 26 | # https: [ 27 | # ..., 28 | # port: 443, 29 | # cipher_suite: :strong, 30 | # keyfile: System.get_env("SOME_APP_SSL_KEY_PATH"), 31 | # certfile: System.get_env("SOME_APP_SSL_CERT_PATH") 32 | # ] 33 | # 34 | # The `cipher_suite` is set to `:strong` to support only the 35 | # latest and more secure SSL ciphers. This means old browsers 36 | # and clients may not be supported. You can set it to 37 | # `:compatible` for wider support. 38 | # 39 | # `:keyfile` and `:certfile` expect an absolute path to the key 40 | # and cert in disk or a relative path inside priv, for example 41 | # "priv/ssl/server.key". For all supported SSL configuration 42 | # options, see https://hexdocs.pm/plug/Plug.SSL.html#configure/1 43 | # 44 | # We also recommend setting `force_ssl` in your endpoint, ensuring 45 | # no data is ever sent via http, always redirecting to https: 46 | # 47 | # config :live_cursors, LiveCursorsWeb.Endpoint, 48 | # force_ssl: [hsts: true] 49 | # 50 | # Check `Plug.SSL` for all available options in `force_ssl`. 51 | -------------------------------------------------------------------------------- /config/runtime.exs: -------------------------------------------------------------------------------- 1 | import Config 2 | 3 | # config/runtime.exs is executed for all environments, including 4 | # during releases. It is executed after compilation and before the 5 | # system starts, so it is typically used to load production configuration 6 | # and secrets from environment variables or elsewhere. Do not define 7 | # any compile-time configuration in here, as it won't be applied. 8 | # The block below contains prod specific runtime configuration. 9 | 10 | # ## Using releases 11 | # 12 | # If you use `mix release`, you need to explicitly enable the server 13 | # by passing the PHX_SERVER=true when you start it: 14 | # 15 | # PHX_SERVER=true bin/live_cursors start 16 | # 17 | # Alternatively, you can use `mix phx.gen.release` to generate a `bin/server` 18 | # script that automatically sets the env var above. 19 | if System.get_env("PHX_SERVER") do 20 | config :live_cursors, LiveCursorsWeb.Endpoint, server: true 21 | end 22 | 23 | if config_env() == :prod do 24 | # The secret key base is used to sign/encrypt cookies and other secrets. 25 | # A default value is used in config/dev.exs and config/test.exs but you 26 | # want to use a different value for prod and you most likely don't want 27 | # to check this value into version control, so we use an environment 28 | # variable instead. 29 | secret_key_base = 30 | System.get_env("SECRET_KEY_BASE") || 31 | raise """ 32 | environment variable SECRET_KEY_BASE is missing. 33 | You can generate one by calling: mix phx.gen.secret 34 | """ 35 | 36 | host = System.get_env("PHX_HOST") || "example.com" 37 | port = String.to_integer(System.get_env("PORT") || "4000") 38 | 39 | config :live_cursors, LiveCursorsWeb.Endpoint, 40 | url: [host: host, port: 443, scheme: "https"], 41 | http: [ 42 | # Enable IPv6 and bind on all interfaces. 43 | # Set it to {0, 0, 0, 0, 0, 0, 0, 1} for local network only access. 44 | # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html 45 | # for details about using IPv6 vs IPv4 and loopback vs public addresses. 46 | ip: {0, 0, 0, 0, 0, 0, 0, 0}, 47 | port: port 48 | ], 49 | secret_key_base: secret_key_base 50 | end 51 | -------------------------------------------------------------------------------- /config/test.exs: -------------------------------------------------------------------------------- 1 | import Config 2 | 3 | # We don't run a server during test. If one is required, 4 | # you can enable the server option below. 5 | config :live_cursors, LiveCursorsWeb.Endpoint, 6 | http: [ip: {127, 0, 0, 1}, port: 4002], 7 | secret_key_base: "1b6uOJ4cnFDWYw6RJg86c9oI/zs95JNyp7imTwXS70Idcg8JPsTbc38B/Oy/nq8K", 8 | server: false 9 | 10 | # Print only warnings and errors during test 11 | config :logger, level: :warning 12 | 13 | # Initialize plugs at runtime for faster test compilation 14 | config :phoenix, :plug_init_mode, :runtime 15 | -------------------------------------------------------------------------------- /coveralls.json: -------------------------------------------------------------------------------- 1 | { 2 | "coverage_options": { 3 | "minimum_coverage": 100 4 | }, 5 | "skip_files": [ 6 | "test/", 7 | "lib/live_cursors/application.ex", 8 | "lib/live_cursors_web.ex", 9 | "lib/live_cursors_web/telemetry.ex", 10 | "lib/live_cursors_web/views/" 11 | ] 12 | } -------------------------------------------------------------------------------- /fly.toml: -------------------------------------------------------------------------------- 1 | # fly.toml file generated for live-cursors on 2022-10-26T08:17:01+01:00 2 | 3 | app = "live-cursors" 4 | kill_signal = "SIGTERM" 5 | kill_timeout = 5 6 | processes = [] 7 | 8 | [env] 9 | PHX_HOST = "live-cursors.fly.dev" 10 | PORT = "8080" 11 | 12 | [experimental] 13 | allowed_public_ports = [] 14 | auto_rollback = true 15 | 16 | [[services]] 17 | http_checks = [] 18 | internal_port = 8080 19 | processes = ["app"] 20 | protocol = "tcp" 21 | script_checks = [] 22 | [services.concurrency] 23 | hard_limit = 25 24 | soft_limit = 20 25 | type = "connections" 26 | 27 | [[services.ports]] 28 | force_https = true 29 | handlers = ["http"] 30 | port = 80 31 | 32 | [[services.ports]] 33 | handlers = ["tls", "http"] 34 | port = 443 35 | 36 | [[services.tcp_checks]] 37 | grace_period = "1s" 38 | interval = "15s" 39 | restart_limit = 0 40 | timeout = "2s" 41 | -------------------------------------------------------------------------------- /lib/live_cursors.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursors do 2 | @moduledoc """ 3 | LiveCursors keeps the contexts that define your domain 4 | and business logic. 5 | 6 | Contexts are also responsible for managing your data, regardless 7 | if it comes from the database, an external API or others. 8 | """ 9 | end 10 | -------------------------------------------------------------------------------- /lib/live_cursors/application.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursors.Application do 2 | # See https://hexdocs.pm/elixir/Application.html 3 | # for more information on OTP Applications 4 | @moduledoc false 5 | 6 | use Application 7 | 8 | @impl true 9 | def start(_type, _args) do 10 | children = [ 11 | # Start the Telemetry supervisor 12 | LiveCursorsWeb.Telemetry, 13 | # Start the PubSub system 14 | {Phoenix.PubSub, name: LiveCursors.PubSub}, 15 | # Start the Endpoint (http/https) 16 | LiveCursorsWeb.Endpoint, 17 | # Start a worker by calling: LiveCursors.Worker.start_link(arg) 18 | # {LiveCursors.Worker, arg}, 19 | LiveCursorsWeb.Presence 20 | ] 21 | 22 | # See https://hexdocs.pm/elixir/Supervisor.html 23 | # for other strategies and supported options 24 | opts = [strategy: :one_for_one, name: LiveCursors.Supervisor] 25 | Supervisor.start_link(children, opts) 26 | end 27 | 28 | # Tell Phoenix to update the endpoint configuration 29 | # whenever the application is updated. 30 | @impl true 31 | def config_change(changed, _new, removed) do 32 | LiveCursorsWeb.Endpoint.config_change(changed, removed) 33 | :ok 34 | end 35 | end 36 | -------------------------------------------------------------------------------- /lib/live_cursors_web.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb do 2 | @moduledoc """ 3 | The entrypoint for defining your web interface, such 4 | as controllers, views, channels and so on. 5 | 6 | This can be used in your application as: 7 | 8 | use LiveCursorsWeb, :controller 9 | use LiveCursorsWeb, :view 10 | 11 | The definitions below will be executed for every view, 12 | controller, etc, so keep them short and clean, focused 13 | on imports, uses and aliases. 14 | 15 | Do NOT define functions inside the quoted expressions 16 | below. Instead, define any helper function in modules 17 | and import those modules here. 18 | """ 19 | 20 | def controller do 21 | quote do 22 | use Phoenix.Controller, namespace: LiveCursorsWeb 23 | 24 | import Plug.Conn 25 | import LiveCursorsWeb.Gettext 26 | alias LiveCursorsWeb.Router.Helpers, as: Routes 27 | end 28 | end 29 | 30 | def view do 31 | quote do 32 | use Phoenix.View, 33 | root: "lib/live_cursors_web/templates", 34 | namespace: LiveCursorsWeb 35 | 36 | # Import convenience functions from controllers 37 | import Phoenix.Controller, 38 | only: [get_flash: 1, get_flash: 2, view_module: 1, view_template: 1] 39 | 40 | # Include shared imports and aliases for views 41 | unquote(view_helpers()) 42 | end 43 | end 44 | 45 | def live_view do 46 | quote do 47 | use Phoenix.LiveView, 48 | layout: {LiveCursorsWeb.LayoutView, :live} 49 | 50 | unquote(view_helpers()) 51 | end 52 | end 53 | 54 | def live_component do 55 | quote do 56 | use Phoenix.LiveComponent 57 | 58 | unquote(view_helpers()) 59 | end 60 | end 61 | 62 | def component do 63 | quote do 64 | use Phoenix.Component 65 | 66 | unquote(view_helpers()) 67 | end 68 | end 69 | 70 | def router do 71 | quote do 72 | use Phoenix.Router 73 | 74 | import Plug.Conn 75 | import Phoenix.Controller 76 | import Phoenix.LiveView.Router 77 | end 78 | end 79 | 80 | def channel do 81 | quote do 82 | use Phoenix.Channel 83 | import LiveCursorsWeb.Gettext 84 | end 85 | end 86 | 87 | defp view_helpers do 88 | quote do 89 | # Use all HTML functionality (forms, tags, etc) 90 | import Phoenix.HTML 91 | use PhoenixHTMLHelpers 92 | 93 | # Import LiveView and .heex helpers (live_render, live_patch, <.form>, etc) 94 | import Phoenix.Component 95 | 96 | # Import basic rendering functionality (render, render_layout, etc) 97 | import Phoenix.View 98 | 99 | import LiveCursorsWeb.ErrorHelpers 100 | import LiveCursorsWeb.Gettext 101 | alias LiveCursorsWeb.Router.Helpers, as: Routes 102 | end 103 | end 104 | 105 | @doc """ 106 | When used, dispatch to the appropriate controller/view/etc. 107 | """ 108 | defmacro __using__(which) when is_atom(which) do 109 | apply(__MODULE__, which, []) 110 | end 111 | end 112 | -------------------------------------------------------------------------------- /lib/live_cursors_web/channels/presence.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Presence do 2 | @moduledoc """ 3 | Provides presence tracking to channels and processes. 4 | 5 | See the [`Phoenix.Presence`](https://hexdocs.pm/phoenix/Phoenix.Presence.html) 6 | docs for more details. 7 | """ 8 | use Phoenix.Presence, 9 | otp_app: :live_cursors, 10 | pubsub_server: LiveCursors.PubSub 11 | end 12 | -------------------------------------------------------------------------------- /lib/live_cursors_web/controllers/auth_controller.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.AuthController do 2 | use LiveCursorsWeb, :controller 3 | import Phoenix.Component, only: [assign_new: 3] 4 | 5 | def add_assigns(:default, _params, %{"jwt" => jwt} = _session, socket) do 6 | {:cont, AuthPlug.assign_jwt_to_socket(socket, &assign_new/3, jwt)} 7 | end 8 | 9 | # if there's no JWT present, then set :loggedin to false 10 | def add_assigns(:default, _params, _session, socket) do 11 | {:cont, assign_new(socket, :loggedin, fn -> false end)} 12 | end 13 | 14 | def login(conn, _params) do 15 | redirect(conn, external: AuthPlug.get_auth_url(conn, "/")) 16 | end 17 | 18 | def logout(conn, _params) do 19 | conn 20 | |> AuthPlug.logout() 21 | |> put_status(302) 22 | |> redirect(to: "/") 23 | end 24 | end 25 | -------------------------------------------------------------------------------- /lib/live_cursors_web/endpoint.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Endpoint do 2 | use Phoenix.Endpoint, otp_app: :live_cursors 3 | 4 | # The session will be stored in the cookie and signed, 5 | # this means its contents can be read but not tampered with. 6 | # Set :encryption_salt if you would also like to encrypt it. 7 | @session_options [ 8 | store: :cookie, 9 | key: "_live_cursors_key", 10 | signing_salt: "DUHPBJy+" 11 | ] 12 | 13 | socket "/live", Phoenix.LiveView.Socket, websocket: [connect_info: [session: @session_options]] 14 | 15 | # Serve at "/" the static files from "priv/static" directory. 16 | # 17 | # You should set gzip to true if you are running phx.digest 18 | # when deploying your static files in production. 19 | plug Plug.Static, 20 | at: "/", 21 | from: :live_cursors, 22 | gzip: false, 23 | only: ~w(assets fonts images favicon.ico robots.txt) 24 | 25 | # Code reloading can be explicitly enabled under the 26 | # :code_reloader configuration of your endpoint. 27 | if code_reloading? do 28 | socket "/phoenix/live_reload/socket", Phoenix.LiveReloader.Socket 29 | plug Phoenix.LiveReloader 30 | plug Phoenix.CodeReloader 31 | end 32 | 33 | 34 | plug Plug.RequestId 35 | plug Plug.Telemetry, event_prefix: [:phoenix, :endpoint] 36 | 37 | plug Plug.Parsers, 38 | parsers: [:urlencoded, :multipart, :json], 39 | pass: ["*/*"], 40 | json_decoder: Phoenix.json_library() 41 | 42 | plug Plug.MethodOverride 43 | plug Plug.Head 44 | plug Plug.Session, @session_options 45 | plug LiveCursorsWeb.Router 46 | end 47 | -------------------------------------------------------------------------------- /lib/live_cursors_web/gettext.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Gettext do 2 | @moduledoc """ 3 | A module providing Internationalization with a gettext-based API. 4 | 5 | By using [Gettext](https://hexdocs.pm/gettext), 6 | your module gains a set of macros for translations, for example: 7 | 8 | import LiveCursorsWeb.Gettext 9 | 10 | # Simple translation 11 | gettext("Here is the string to translate") 12 | 13 | # Plural translation 14 | ngettext("Here is the string to translate", 15 | "Here are the strings to translate", 16 | 3) 17 | 18 | # Domain-based translation 19 | dgettext("errors", "Here is the error message to translate") 20 | 21 | See the [Gettext Docs](https://hexdocs.pm/gettext) for detailed usage. 22 | """ 23 | use Gettext, otp_app: :live_cursors 24 | end 25 | -------------------------------------------------------------------------------- /lib/live_cursors_web/live/cursors.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Cursors do 2 | alias LiveCursorsWeb.AuthController 3 | alias LiveCursorsWeb.Presence 4 | use LiveCursorsWeb, :live_view 5 | 6 | @channel_topic "cursor_page" 7 | 8 | def mount(params, session, socket) do 9 | # Add auth assigns to socket 10 | {_cont, socket} = AuthController.add_assigns(:default, params, session, socket) 11 | 12 | username = 13 | if socket.assigns.loggedin do 14 | socket.assigns.person.username || socket.assigns.person.givenName || "guest" 15 | else 16 | MnemonicSlugs.generate_slug() 17 | end 18 | 19 | color = RandomColor.hex() 20 | 21 | Presence.track(self(), @channel_topic, socket.id, %{ 22 | socket_id: socket.id, 23 | x: 50, 24 | y: 50, 25 | username: username, 26 | color: color 27 | }) 28 | 29 | LiveCursorsWeb.Endpoint.subscribe(@channel_topic) 30 | 31 | initial_users = 32 | Presence.list(@channel_topic) 33 | |> Enum.map(fn {_, data} -> data[:metas] |> List.first() end) 34 | 35 | updated = 36 | socket 37 | |> assign(:username, username) 38 | |> assign(:users, initial_users) 39 | |> assign(:socket_id, socket.id) 40 | 41 | {:ok, updated} 42 | end 43 | 44 | def handle_event("cursor-move", %{"mouse_x" => x, "mouse_y" => y}, socket) do 45 | key = socket.id 46 | payload = %{x: x, y: y} 47 | 48 | metas = 49 | Presence.get_by_key(@channel_topic, key)[:metas] 50 | |> List.first() 51 | |> Map.merge(payload) 52 | 53 | Presence.update(self(), @channel_topic, key, metas) 54 | 55 | {:noreply, socket} 56 | end 57 | 58 | def handle_event("login", _value, socket) do 59 | {:noreply, push_redirect(socket, to: "/login")} 60 | end 61 | 62 | def handle_event("logout", _value, socket) do 63 | {:noreply, push_redirect(socket, to: "/logout")} 64 | end 65 | 66 | def handle_info(%{event: "presence_diff", payload: _payload}, socket) do 67 | users = 68 | Presence.list(@channel_topic) 69 | |> Enum.map(fn {_, data} -> data[:metas] |> List.first() end) 70 | 71 | updated = 72 | socket 73 | |> assign(users: users) 74 | |> assign(socket_id: socket.id) 75 | 76 | {:noreply, updated} 77 | end 78 | end 79 | -------------------------------------------------------------------------------- /lib/live_cursors_web/live/cursors.html.heex: -------------------------------------------------------------------------------- 1 |
    2 |
    3 |

    just use your mouse

    4 |
    5 | 6 | 7 | <%= if @loggedin do %> 8 | 18 | <% else %> 19 | 29 | <% end %> 30 | 31 |
      32 | <%= for user <- @users do %> 33 |
    • 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | <%= user.username %> 45 | 46 |
      • 47 | <% end %> 48 |
    49 |
    50 | -------------------------------------------------------------------------------- /lib/live_cursors_web/router.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Router do 2 | use LiveCursorsWeb, :router 3 | 4 | pipeline :browser do 5 | plug :accepts, ["html"] 6 | plug :fetch_session 7 | plug :fetch_live_flash 8 | plug :put_root_layout, {LiveCursorsWeb.LayoutView, :root} 9 | plug :protect_from_forgery 10 | plug :put_secure_browser_headers 11 | end 12 | 13 | pipeline :authOptional, do: plug(AuthPlugOptional) 14 | 15 | scope "/", LiveCursorsWeb do 16 | pipe_through [:browser, :protect_from_forgery, :authOptional] 17 | 18 | live "/", Cursors 19 | get "/login", AuthController, :login 20 | get "/logout", AuthController, :logout 21 | end 22 | end 23 | -------------------------------------------------------------------------------- /lib/live_cursors_web/telemetry.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.Telemetry do 2 | use Supervisor 3 | import Telemetry.Metrics 4 | 5 | def start_link(arg) do 6 | Supervisor.start_link(__MODULE__, arg, name: __MODULE__) 7 | end 8 | 9 | @impl true 10 | def init(_arg) do 11 | children = [ 12 | # Telemetry poller will execute the given period measurements 13 | # every 10_000ms. Learn more here: https://hexdocs.pm/telemetry_metrics 14 | {:telemetry_poller, measurements: periodic_measurements(), period: 10_000} 15 | # Add reporters as children of your supervision tree. 16 | # {Telemetry.Metrics.ConsoleReporter, metrics: metrics()} 17 | ] 18 | 19 | Supervisor.init(children, strategy: :one_for_one) 20 | end 21 | 22 | def metrics do 23 | [ 24 | # Phoenix Metrics 25 | summary("phoenix.endpoint.stop.duration", 26 | unit: {:native, :millisecond} 27 | ), 28 | summary("phoenix.router_dispatch.stop.duration", 29 | tags: [:route], 30 | unit: {:native, :millisecond} 31 | ), 32 | 33 | # VM Metrics 34 | summary("vm.memory.total", unit: {:byte, :kilobyte}), 35 | summary("vm.total_run_queue_lengths.total"), 36 | summary("vm.total_run_queue_lengths.cpu"), 37 | summary("vm.total_run_queue_lengths.io") 38 | ] 39 | end 40 | 41 | defp periodic_measurements do 42 | [ 43 | # A module, function and arguments to be invoked periodically. 44 | # This function must call :telemetry.execute/3 and a metric must be added above. 45 | # {LiveCursorsWeb, :count_users, []} 46 | ] 47 | end 48 | end 49 | -------------------------------------------------------------------------------- /lib/live_cursors_web/templates/layout/app.html.heex: -------------------------------------------------------------------------------- 1 |
    2 | <%= @inner_content %> 3 |
    4 | -------------------------------------------------------------------------------- /lib/live_cursors_web/templates/layout/live.html.heex: -------------------------------------------------------------------------------- 1 |
    2 | 5 | 6 | 9 | 10 | <%= @inner_content %> 11 |
    12 | -------------------------------------------------------------------------------- /lib/live_cursors_web/templates/layout/root.html.heex: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | <%= csrf_meta_tag() %> 8 | <.live_title suffix=" · Phoenix Framework"> 9 | <%= assigns[:page_title] || "LiveCursors" %> 10 | 11 | 12 | 13 | 14 | 15 | <%= @inner_content %> 16 | 17 | -------------------------------------------------------------------------------- /lib/live_cursors_web/templates/page/index.html.heex: -------------------------------------------------------------------------------- 1 |
    2 |

    3 | Hey 4 | there 7 |

    8 |

    You shouldn't really see this page =]

    9 |
    -------------------------------------------------------------------------------- /lib/live_cursors_web/views/error_helpers.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.ErrorHelpers do 2 | @moduledoc """ 3 | Conveniences for translating and building error messages. 4 | """ 5 | 6 | # use Phoenix.HTML 7 | 8 | @doc """ 9 | Generates tag for inlined form input errors. 10 | """ 11 | def error_tag(_form, _field) do 12 | # Enum.map(Keyword.get_values(form.errors, field), fn error -> 13 | # content_tag(:span, translate_error(error), 14 | # class: "invalid-feedback", 15 | # phx_feedback_for: input_name(form, field) 16 | # ) 17 | # end) 18 | end 19 | 20 | @doc """ 21 | Translates an error message using gettext. 22 | """ 23 | def translate_error({msg, opts}) do 24 | # When using gettext, we typically pass the strings we want 25 | # to translate as a static argument: 26 | # 27 | # # Translate "is invalid" in the "errors" domain 28 | # dgettext("errors", "is invalid") 29 | # 30 | # # Translate the number of files with plural rules 31 | # dngettext("errors", "1 file", "%{count} files", count) 32 | # 33 | # Because the error messages we show in our forms and APIs 34 | # are defined inside Ecto, we need to translate them dynamically. 35 | # This requires us to call the Gettext module passing our gettext 36 | # backend as first argument. 37 | # 38 | # Note we use the "errors" domain, which means translations 39 | # should be written to the errors.po file. The :count option is 40 | # set by Ecto and indicates we should also apply plural rules. 41 | if count = opts[:count] do 42 | Gettext.dngettext(LiveCursorsWeb.Gettext, "errors", msg, msg, count, opts) 43 | else 44 | Gettext.dgettext(LiveCursorsWeb.Gettext, "errors", msg, opts) 45 | end 46 | end 47 | end 48 | -------------------------------------------------------------------------------- /lib/live_cursors_web/views/error_view.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.ErrorView do 2 | use LiveCursorsWeb, :view 3 | 4 | # If you want to customize a particular status code 5 | # for a certain format, you may uncomment below. 6 | # def render("500.html", _assigns) do 7 | # "Internal Server Error" 8 | # end 9 | 10 | # By default, Phoenix returns the status message from 11 | # the template name. For example, "404.html" becomes 12 | # "Not Found". 13 | def template_not_found(template, _assigns) do 14 | Phoenix.Controller.status_message_from_template(template) 15 | end 16 | end 17 | -------------------------------------------------------------------------------- /lib/live_cursors_web/views/layout_view.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.LayoutView do 2 | use LiveCursorsWeb, :view 3 | 4 | # Phoenix LiveDashboard is available only in development by default, 5 | # so we instruct Elixir to not warn if the dashboard route is missing. 6 | @compile {:no_warn_undefined, {Routes, :live_dashboard_path, 2}} 7 | end 8 | -------------------------------------------------------------------------------- /lib/live_cursors_web/views/page_view.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.PageView do 2 | use LiveCursorsWeb, :view 3 | end 4 | -------------------------------------------------------------------------------- /mix.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursors.MixProject do 2 | use Mix.Project 3 | 4 | def project do 5 | [ 6 | app: :live_cursors, 7 | version: "0.1.0", 8 | elixir: "~> 1.12", 9 | elixirc_paths: elixirc_paths(Mix.env()), 10 | compilers: Mix.compilers(), 11 | start_permanent: Mix.env() == :prod, 12 | aliases: aliases(), 13 | deps: deps(), 14 | 15 | # Testing 16 | test_coverage: [tool: ExCoveralls], 17 | preferred_cli_env: [ 18 | c: :test, 19 | coveralls: :test, 20 | "coveralls.json": :test, 21 | "coveralls.html": :test, 22 | t: :test 23 | ] 24 | ] 25 | end 26 | 27 | # Configuration for the OTP application. 28 | # 29 | # Type `mix help compile.app` for more information. 30 | def application do 31 | [ 32 | mod: {LiveCursors.Application, []}, 33 | extra_applications: [:logger, :runtime_tools] 34 | ] 35 | end 36 | 37 | # Specifies which paths to compile per environment. 38 | defp elixirc_paths(:test), do: ["lib", "test/support"] 39 | defp elixirc_paths(_), do: ["lib"] 40 | 41 | # Specifies your project dependencies. 42 | # 43 | # Type `mix help deps` for examples and options. 44 | defp deps do 45 | [ 46 | {:phoenix, "~> 1.7.0"}, 47 | {:phoenix_html, "~> 4.0"}, 48 | {:phoenix_html_helpers, "~> 1.0"}, 49 | {:phoenix_live_reload, "~> 1.2", only: :dev}, 50 | {:phoenix_live_view, "~> 1.0.0"}, 51 | {:phoenix_view, "~> 2.0"}, 52 | {:tailwind, "~> 0.3.1", runtime: Mix.env() == :dev}, 53 | {:floki, ">= 0.30.0", only: :test}, 54 | {:esbuild, "~> 0.4", runtime: Mix.env() == :dev}, 55 | {:telemetry_metrics, "~> 1.0"}, 56 | {:telemetry_poller, "~> 1.0"}, 57 | {:gettext, "~> 0.18"}, 58 | {:jason, "~> 1.2"}, 59 | {:plug_cowboy, "~> 2.5"}, 60 | {:mnemonic_slugs, "~> 0.0.3"}, 61 | {:random_color, "~> 0.1.0"}, 62 | {:auth_plug, "~> 1.5.1"}, 63 | 64 | # Testing 65 | {:excoveralls, "~> 0.18.0", only: [:test, :dev]}, 66 | {:mock, "~> 0.3.0", only: :test} 67 | 68 | # Code style/quality checking: 69 | # {:credo, "~> 1.6.4", only: [:dev, :test], runtime: false}, 70 | ] 71 | end 72 | 73 | # Aliases are shortcuts or tasks specific to the current project. 74 | # For example, to install project dependencies and perform other setup tasks, run: 75 | # 76 | # $ mix setup 77 | # 78 | # See the documentation for `Mix` for more info on aliases. 79 | defp aliases do 80 | [ 81 | "assets.deploy": ["esbuild default --minify", "tailwind default --minify", "phx.digest"], 82 | c: ["coveralls.html"], 83 | s: ["phx.server"], 84 | setup: ["deps.get"], 85 | t: ["test"] 86 | ] 87 | end 88 | end 89 | -------------------------------------------------------------------------------- /mix.lock: -------------------------------------------------------------------------------- 1 | %{ 2 | "auth_plug": {:hex, :auth_plug, "1.5.2", "3e330cd9c231a29dc9e0524ac4bf81444168dc3ab09bfe789048d88a06e4908a", [:mix], [{:envar, "~> 1.1.0", [hex: :envar, repo: "hexpm", optional: false]}, {:httpoison, "~> 1.8.0", [hex: :httpoison, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:joken, "~> 2.5", [hex: :joken, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}, {:useful, "~> 1.10.0", [hex: :useful, repo: "hexpm", optional: false]}], "hexpm", "326bedcedce560de37d3606bb85f7124b8e29c7ad892d4d8fe04a3ba14d18b06"}, 3 | "castore": {:hex, :castore, "1.0.12", "053f0e32700cbec356280c0e835df425a3be4bc1e0627b714330ad9d0f05497f", [:mix], [], "hexpm", "3dca286b2186055ba0c9449b4e95b97bf1b57b47c1f2644555879e659960c224"}, 4 | "certifi": {:hex, :certifi, "2.12.0", "2d1cca2ec95f59643862af91f001478c9863c2ac9cb6e2f89780bfd8de987329", [:rebar3], [], "hexpm", "ee68d85df22e554040cdb4be100f33873ac6051387baf6a8f6ce82272340ff1c"}, 5 | "cowboy": {:hex, :cowboy, "2.13.0", "09d770dd5f6a22cc60c071f432cd7cb87776164527f205c5a6b0f24ff6b38990", [:make, :rebar3], [{:cowlib, ">= 2.14.0 and < 3.0.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, ">= 1.8.0 and < 3.0.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "e724d3a70995025d654c1992c7b11dbfea95205c047d86ff9bf1cda92ddc5614"}, 6 | "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.4.0", "f239f68b588efa7707abce16a84d0d2acf3a0f50571f8bb7f56a15865aae820c", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7d98bac1ee4565d31b62d59f8823dfd8356a169e7fcbb83831b8a5397404c9de"}, 7 | "cowlib": {:hex, :cowlib, "2.15.0", "3c97a318a933962d1c12b96ab7c1d728267d2c523c25a5b57b0f93392b6e9e25", [:make, :rebar3], [], "hexpm", "4f00c879a64b4fe7c8fcb42a4281925e9ffdb928820b03c3ad325a617e857532"}, 8 | "envar": {:hex, :envar, "1.1.0", "105bcac5a03800a1eb21e2c7e229edc687359b0cc184150ec1380db5928c115c", [:mix], [], "hexpm", "97028ab4a040a5c19e613fdf46a41cf51c6e848d99077e525b338e21d2993320"}, 9 | "esbuild": {:hex, :esbuild, "0.9.0", "f043eeaca4932ca8e16e5429aebd90f7766f31ac160a25cbd9befe84f2bc068f", [:mix], [{:jason, "~> 1.4", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "b415027f71d5ab57ef2be844b2a10d0c1b5a492d431727f43937adce22ba45ae"}, 10 | "excoveralls": {:hex, :excoveralls, "0.18.5", "e229d0a65982613332ec30f07940038fe451a2e5b29bce2a5022165f0c9b157e", [:mix], [{:castore, "~> 1.0", [hex: :castore, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "523fe8a15603f86d64852aab2abe8ddbd78e68579c8525ae765facc5eae01562"}, 11 | "expo": {:hex, :expo, "1.1.0", "f7b9ed7fb5745ebe1eeedf3d6f29226c5dd52897ac67c0f8af62a07e661e5c75", [:mix], [], "hexpm", "fbadf93f4700fb44c331362177bdca9eeb8097e8b0ef525c9cc501cb9917c960"}, 12 | "file_system": {:hex, :file_system, "1.1.0", "08d232062284546c6c34426997dd7ef6ec9f8bbd090eb91780283c9016840e8f", [:mix], [], "hexpm", "bfcf81244f416871f2a2e15c1b515287faa5db9c6bcf290222206d120b3d43f6"}, 13 | "floki": {:hex, :floki, "0.37.1", "d7aaee758c8a5b4a7495799a4260754fec5530d95b9c383c03b27359dea117cf", [:mix], [], "hexpm", "673d040cb594d31318d514590246b6dd587ed341d3b67e17c1c0eb8ce7ca6f04"}, 14 | "gettext": {:hex, :gettext, "0.26.2", "5978aa7b21fada6deabf1f6341ddba50bc69c999e812211903b169799208f2a8", [:mix], [{:expo, "~> 0.5.1 or ~> 1.0", [hex: :expo, repo: "hexpm", optional: false]}], "hexpm", "aa978504bcf76511efdc22d580ba08e2279caab1066b76bb9aa81c4a1e0a32a5"}, 15 | "hackney": {:hex, :hackney, "1.20.1", "8d97aec62ddddd757d128bfd1df6c5861093419f8f7a4223823537bad5d064e2", [:rebar3], [{:certifi, "~>2.12.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.4.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "fe9094e5f1a2a2c0a7d10918fee36bfec0ec2a979994cff8cfe8058cd9af38e3"}, 16 | "html_entities": {:hex, :html_entities, "0.5.2", "9e47e70598da7de2a9ff6af8758399251db6dbb7eebe2b013f2bbd2515895c3c", [:mix], [], "hexpm", "c53ba390403485615623b9531e97696f076ed415e8d8058b1dbaa28181f4fdcc"}, 17 | "httpoison": {:hex, :httpoison, "1.8.2", "9eb9c63ae289296a544842ef816a85d881d4a31f518a0fec089aaa744beae290", [:mix], [{:hackney, "~> 1.17", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm", "2bb350d26972e30c96e2ca74a1aaf8293d61d0742ff17f01e0279fef11599921"}, 18 | "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"}, 19 | "jason": {:hex, :jason, "1.4.4", "b9226785a9aa77b6857ca22832cffa5d5011a667207eb2a0ad56adb5db443b8a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b"}, 20 | "joken": {:hex, :joken, "2.5.0", "09be497d804b8115eb6f07615cef2e60c2a1008fb89dc0aef0d4c4b4609b99aa", [:mix], [{:jose, "~> 1.11.2", [hex: :jose, repo: "hexpm", optional: false]}], "hexpm", "22b25c89617c5ed8ca7b31026340a25ea0f9ca7160f9706b79be9ed81fdf74e7"}, 21 | "jose": {:hex, :jose, "1.11.5", "3bc2d75ffa5e2c941ca93e5696b54978323191988eb8d225c2e663ddfefd515e", [:mix, :rebar3], [], "hexpm", "dcd3b215bafe02ea7c5b23dafd3eb8062a5cd8f2d904fd9caa323d37034ab384"}, 22 | "meck": {:hex, :meck, "0.9.2", "85ccbab053f1db86c7ca240e9fc718170ee5bda03810a6292b5306bf31bae5f5", [:rebar3], [], "hexpm", "81344f561357dc40a8344afa53767c32669153355b626ea9fcbc8da6b3045826"}, 23 | "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"}, 24 | "mime": {:hex, :mime, "2.0.6", "8f18486773d9b15f95f4f4f1e39b710045fa1de891fada4516559967276e4dc2", [:mix], [], "hexpm", "c9945363a6b26d747389aac3643f8e0e09d30499a138ad64fe8fd1d13d9b153e"}, 25 | "mimerl": {:hex, :mimerl, "1.3.0", "d0cd9fc04b9061f82490f6581e0128379830e78535e017f7780f37fea7545726", [:rebar3], [], "hexpm", "a1e15a50d1887217de95f0b9b0793e32853f7c258a5cd227650889b38839fe9d"}, 26 | "mnemonic_slugs": {:hex, :mnemonic_slugs, "0.0.3", "0c249c4888233cef880bffddd70b6d07656cd7cf546063c2e8049d2beec89083", [:mix], [], "hexpm", "d5dc54475a11a62df7bb686fc2983647f789defaeb0ca9fccdc6dd5c3ad40daf"}, 27 | "mock": {:hex, :mock, "0.3.9", "10e44ad1f5962480c5c9b9fa779c6c63de9bd31997c8e04a853ec990a9d841af", [:mix], [{:meck, "~> 0.9.2", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm", "9e1b244c4ca2551bb17bb8415eed89e40ee1308e0fbaed0a4fdfe3ec8a4adbd3"}, 28 | "parse_trans": {:hex, :parse_trans, "3.4.1", "6e6aa8167cb44cc8f39441d05193be6e6f4e7c2946cb2759f015f8c56b76e5ff", [:rebar3], [], "hexpm", "620a406ce75dada827b82e453c19cf06776be266f5a67cff34e1ef2cbb60e49a"}, 29 | "phoenix": {:hex, :phoenix, "1.7.21", "14ca4f1071a5f65121217d6b57ac5712d1857e40a0833aff7a691b7870fc9a3b", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 2.1", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:phoenix_template, "~> 1.0", [hex: :phoenix_template, repo: "hexpm", optional: false]}, {:phoenix_view, "~> 2.0", [hex: :phoenix_view, repo: "hexpm", optional: true]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.7", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:plug_crypto, "~> 1.2 or ~> 2.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:websock_adapter, "~> 0.5.3", [hex: :websock_adapter, repo: "hexpm", optional: false]}], "hexpm", "336dce4f86cba56fed312a7d280bf2282c720abb6074bdb1b61ec8095bdd0bc9"}, 30 | "phoenix_html": {:hex, :phoenix_html, "4.2.1", "35279e2a39140068fc03f8874408d58eef734e488fc142153f055c5454fd1c08", [:mix], [], "hexpm", "cff108100ae2715dd959ae8f2a8cef8e20b593f8dfd031c9cba92702cf23e053"}, 31 | "phoenix_html_helpers": {:hex, :phoenix_html_helpers, "1.0.1", "7eed85c52eff80a179391036931791ee5d2f713d76a81d0d2c6ebafe1e11e5ec", [:mix], [{:phoenix_html, "~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:plug, "~> 1.5", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm", "cffd2385d1fa4f78b04432df69ab8da63dc5cf63e07b713a4dcf36a3740e3090"}, 32 | "phoenix_live_reload": {:hex, :phoenix_live_reload, "1.6.0", "2791fac0e2776b640192308cc90c0dbcf67843ad51387ed4ecae2038263d708d", [:mix], [{:file_system, "~> 0.2.10 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.4", [hex: :phoenix, repo: "hexpm", optional: false]}], "hexpm", "b3a1fa036d7eb2f956774eda7a7638cf5123f8f2175aca6d6420a7f95e598e1c"}, 33 | "phoenix_live_view": {:hex, :phoenix_live_view, "1.0.11", "76f6416cb31e2e49601c62b79edc9e6fbd0706368bba9f49c4bd13934b785a28", [:mix], [{:floki, "~> 0.36", [hex: :floki, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix, "~> 1.6.15 or ~> 1.7.0", [hex: :phoenix, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 3.3 or ~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: false]}, {:phoenix_template, "~> 1.0", [hex: :phoenix_template, repo: "hexpm", optional: false]}, {:phoenix_view, "~> 2.0", [hex: :phoenix_view, repo: "hexpm", optional: true]}, {:plug, "~> 1.15", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.2 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "522b8c164d1a0009d30fd3364538d17684cb6f8e6a6931f511f82d891c634cdd"}, 34 | "phoenix_pubsub": {:hex, :phoenix_pubsub, "2.1.3", "3168d78ba41835aecad272d5e8cd51aa87a7ac9eb836eabc42f6e57538e3731d", [:mix], [], "hexpm", "bba06bc1dcfd8cb086759f0edc94a8ba2bc8896d5331a1e2c2902bf8e36ee502"}, 35 | "phoenix_template": {:hex, :phoenix_template, "1.0.4", "e2092c132f3b5e5b2d49c96695342eb36d0ed514c5b252a77048d5969330d639", [:mix], [{:phoenix_html, "~> 2.14.2 or ~> 3.0 or ~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}], "hexpm", "2c0c81f0e5c6753faf5cca2f229c9709919aba34fab866d3bc05060c9c444206"}, 36 | "phoenix_view": {:hex, :phoenix_view, "2.0.4", "b45c9d9cf15b3a1af5fb555c674b525391b6a1fe975f040fb4d913397b31abf4", [:mix], [{:phoenix_html, "~> 2.14.2 or ~> 3.0 or ~> 4.0", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:phoenix_template, "~> 1.0", [hex: :phoenix_template, repo: "hexpm", optional: false]}], "hexpm", "4e992022ce14f31fe57335db27a28154afcc94e9983266835bb3040243eb620b"}, 37 | "plug": {:hex, :plug, "1.17.0", "a0832e7af4ae0f4819e0c08dd2e7482364937aea6a8a997a679f2cbb7e026b2e", [:mix], [{:mime, "~> 1.0 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_crypto, "~> 1.1.1 or ~> 1.2 or ~> 2.0", [hex: :plug_crypto, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "f6692046652a69a00a5a21d0b7e11fcf401064839d59d6b8787f23af55b1e6bc"}, 38 | "plug_cowboy": {:hex, :plug_cowboy, "2.7.3", "1304d36752e8bdde213cea59ef424ca932910a91a07ef9f3874be709c4ddb94b", [:mix], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:cowboy_telemetry, "~> 0.3", [hex: :cowboy_telemetry, repo: "hexpm", optional: false]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "77c95524b2aa5364b247fa17089029e73b951ebc1adeef429361eab0bb55819d"}, 39 | "plug_crypto": {:hex, :plug_crypto, "2.1.1", "19bda8184399cb24afa10be734f84a16ea0a2bc65054e23a62bb10f06bc89491", [:mix], [], "hexpm", "6470bce6ffe41c8bd497612ffde1a7e4af67f36a15eea5f921af71cf3e11247c"}, 40 | "ranch": {:hex, :ranch, "2.2.0", "25528f82bc8d7c6152c57666ca99ec716510fe0925cb188172f41ce93117b1b0", [:make, :rebar3], [], "hexpm", "fa0b99a1780c80218a4197a59ea8d3bdae32fbff7e88527d7d8a4787eff4f8e7"}, 41 | "random_color": {:hex, :random_color, "0.1.0", "fe0a7ad9311e7253c422e339c6203824e3b08aab44cc70ef6b5b6bd27021acb0", [:mix], [], "hexpm", "1bf3ef5b350cb84b0374e5e7edc98fe7daac7324f8ea66d8417dbe3475521e24"}, 42 | "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"}, 43 | "tailwind": {:hex, :tailwind, "0.3.1", "a89d2835c580748c7a975ad7dd3f2ea5e63216dc16d44f9df492fbd12c094bed", [:mix], [], "hexpm", "98a45febdf4a87bc26682e1171acdedd6317d0919953c353fcd1b4f9f4b676a2"}, 44 | "telemetry": {:hex, :telemetry, "1.3.0", "fedebbae410d715cf8e7062c96a1ef32ec22e764197f70cda73d82778d61e7a2", [:rebar3], [], "hexpm", "7015fc8919dbe63764f4b4b87a95b7c0996bd539e0d499be6ec9d7f3875b79e6"}, 45 | "telemetry_metrics": {:hex, :telemetry_metrics, "1.1.0", "5bd5f3b5637e0abea0426b947e3ce5dd304f8b3bc6617039e2b5a008adc02f8f", [:mix], [{:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "e7b79e8ddfde70adb6db8a6623d1778ec66401f366e9a8f5dd0955c56bc8ce67"}, 46 | "telemetry_poller": {:hex, :telemetry_poller, "1.2.0", "ba82e333215aed9dd2096f93bd1d13ae89d249f82760fcada0850ba33bac154b", [:rebar3], [{:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7216e21a6c326eb9aa44328028c34e9fd348fb53667ca837be59d0aa2a0156e8"}, 47 | "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"}, 48 | "useful": {:hex, :useful, "1.10.0", "a9377b3d8765d28dbb99332f37ab73f5a85706bef918072383957c9294d7bfbc", [:mix], [], "hexpm", "39c5535370943604ee185f46a5d2d9e6956568e48e0120fcda988653b5acbfc3"}, 49 | "websock": {:hex, :websock, "0.5.3", "2f69a6ebe810328555b6fe5c831a851f485e303a7c8ce6c5f675abeb20ebdadc", [:mix], [], "hexpm", "6105453d7fac22c712ad66fab1d45abdf049868f253cf719b625151460b8b453"}, 50 | "websock_adapter": {:hex, :websock_adapter, "0.5.8", "3b97dc94e407e2d1fc666b2fb9acf6be81a1798a2602294aac000260a7c4a47d", [:mix], [{:bandit, ">= 0.6.0", [hex: :bandit, repo: "hexpm", optional: true]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.6", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "315b9a1865552212b5f35140ad194e67ce31af45bcee443d4ecb96b5fd3f3782"}, 51 | } 52 | -------------------------------------------------------------------------------- /priv/gettext/en/LC_MESSAGES/errors.po: -------------------------------------------------------------------------------- 1 | ## `msgid`s in this file come from POT (.pot) files. 2 | ## 3 | ## Do not add, change, or remove `msgid`s manually here as 4 | ## they're tied to the ones in the corresponding POT file 5 | ## (with the same domain). 6 | ## 7 | ## Use `mix gettext.extract --merge` or `mix gettext.merge` 8 | ## to merge POT files into PO files. 9 | msgid "" 10 | msgstr "" 11 | "Language: en\n" 12 | -------------------------------------------------------------------------------- /priv/gettext/errors.pot: -------------------------------------------------------------------------------- 1 | ## This is a PO Template file. 2 | ## 3 | ## `msgid`s here are often extracted from source code. 4 | ## Add new translations manually only if they're dynamic 5 | ## translations that can't be statically extracted. 6 | ## 7 | ## Run `mix gettext.extract` to bring this file up to 8 | ## date. Leave `msgstr`s empty as changing them here has no 9 | ## effect: edit them in PO (`.po`) files instead. 10 | 11 | -------------------------------------------------------------------------------- /priv/static/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial/b485578ddffb30f6e7df28b085b5dbccf99f6967/priv/static/favicon.ico -------------------------------------------------------------------------------- /priv/static/images/phoenix.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/dwyl/phoenix-liveview-realtime-cursor-tracking-tutorial/b485578ddffb30f6e7df28b085b5dbccf99f6967/priv/static/images/phoenix.png -------------------------------------------------------------------------------- /priv/static/robots.txt: -------------------------------------------------------------------------------- 1 | # See https://www.robotstxt.org/robotstxt.html for documentation on how to use the robots.txt file 2 | # 3 | # To ban all spiders from the entire site uncomment the next two lines: 4 | # User-agent: * 5 | # Disallow: / 6 | -------------------------------------------------------------------------------- /rel/overlays/bin/server: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | cd -P -- "$(dirname -- "$0")" 3 | PHX_SERVER=true exec ./live_cursors start 4 | -------------------------------------------------------------------------------- /rel/overlays/bin/server.bat: -------------------------------------------------------------------------------- 1 | set PHX_SERVER=true 2 | call "%~dp0\live_cursors" start 3 | -------------------------------------------------------------------------------- /test/live_cursors_web/controllers/auth_controller_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.AuthControllerTest do 2 | alias LiveCursorsWeb.AuthController 3 | use LiveCursorsWeb.ConnCase 4 | 5 | test "Logout link displayed when loggedin", %{conn: conn} do 6 | data = %{ 7 | email: "test@dwyl.com", 8 | givenName: "Simon", 9 | picture: "this", 10 | auth_provider: "GitHub", 11 | username: "SimonLabs" 12 | } 13 | 14 | jwt = AuthPlug.Token.generate_jwt!(data) 15 | 16 | conn = get(conn, "/?jwt=#{jwt}") 17 | assert html_response(conn, 200) =~ "logout" 18 | end 19 | 20 | test "get /logout with valid JWT", %{conn: conn} do 21 | data = %{ 22 | email: "al@dwyl.com", 23 | givenName: "Al", 24 | picture: "this", 25 | auth_provider: "GitHub", 26 | sid: 1, 27 | id: 1 28 | } 29 | 30 | jwt = AuthPlug.Token.generate_jwt!(data) 31 | 32 | conn = 33 | conn 34 | |> put_req_header("authorization", jwt) 35 | |> get("/logout") 36 | 37 | assert "/" = redirected_to(conn, 302) 38 | end 39 | 40 | test "test login link redirect to authdemo.fly.dev", %{conn: conn} do 41 | conn = get(conn, "/login") 42 | assert redirected_to(conn, 302) =~ "authdemo.fly.dev" 43 | end 44 | 45 | test "test mount" do 46 | data = %{ 47 | email: "test@dwyl.com", 48 | givenName: "Simon", 49 | picture: "this", 50 | auth_provider: "GitHub", 51 | username: "SimonLabs" 52 | } 53 | 54 | jwt = AuthPlug.Token.generate_jwt!(data) 55 | 56 | {:cont, socket} = 57 | AuthController.add_assigns(:default, nil, %{jwt: jwt}, %Phoenix.LiveView.Socket{}) 58 | 59 | assert socket != nil 60 | end 61 | end 62 | -------------------------------------------------------------------------------- /test/live_cursors_web/controllers/page_controller_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.PageControllerTest do 2 | use LiveCursorsWeb.ConnCase 3 | 4 | test "GET /", %{conn: conn} do 5 | conn = get(conn, "/") 6 | assert html_response(conn, 200) =~ "just use your mouse" 7 | end 8 | end 9 | -------------------------------------------------------------------------------- /test/live_cursors_web/live/cursors_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.CursorsTest do 2 | use LiveCursorsWeb.ConnCase 3 | use ExUnit.Case 4 | alias LiveCursorsWeb.Cursors 5 | import Mock 6 | 7 | # Default presence list response 8 | @presence_list_response %{ 9 | "phx-FyEJCOx5vtCG6QAl" => %{ 10 | metas: [ 11 | %{ 12 | color: "#035CA5", 13 | phx_ref: "FyEJCe_cOATybwvh", 14 | phx_ref_prev: "FyEJCe9jBIPybwvB", 15 | socket_id: "phx-FyEJCOx5vtCG6QAl", 16 | username: "tibet-nebula", 17 | x: 40.682870370370374, 18 | y: 23.435722411831627 19 | } 20 | ] 21 | } 22 | } 23 | @presence_getByKey_response %{ 24 | metas: [ 25 | %{ 26 | color: "#5CC1CE", 27 | phx_ref: "FyEKNvTsug53WgpD", 28 | phx_ref_prev: "FyEKNvRCfsp3Wgoj", 29 | socket_id: "phx-FyEKNeF1WxLc6gAj", 30 | username: "gamma-boston", 31 | x: 72.68518518518519, 32 | y: 11.945392491467576 33 | } 34 | ] 35 | } 36 | 37 | defp create_socket() do 38 | %{socket: %Phoenix.LiveView.Socket{}} 39 | end 40 | 41 | describe "Mount state" do 42 | setup do 43 | create_socket() 44 | end 45 | 46 | test "when on mount assigns", %{socket: socket} do 47 | {:ok, socket} = Cursors.mount(nil, nil, socket) 48 | 49 | assert socket.assigns.username != "" 50 | end 51 | 52 | test "when presence state changes", %{socket: socket} do 53 | with_mock LiveCursorsWeb.Presence, 54 | list: fn _list -> @presence_list_response end do 55 | payload = %Phoenix.Socket.Broadcast{ 56 | topic: "cursor_page", 57 | event: "presence_diff", 58 | payload: %{ 59 | joins: %{ 60 | "phx-FyEHJixUtfvtkBOD" => %{ 61 | metas: [ 62 | %{ 63 | color: "#FFC9C4", 64 | phx_ref: "FyEHJjOkomBpeQuH", 65 | socket_id: "phx-FyEHJixUtfvtkBOD", 66 | username: "magic-global", 67 | x: 50, 68 | y: 50 69 | } 70 | ] 71 | } 72 | }, 73 | leaves: %{} 74 | } 75 | } 76 | 77 | {:noreply, socket} = Cursors.handle_info(payload, socket) 78 | 79 | assert socket.assigns.socket_id != "" 80 | assert socket.assigns.users != [] 81 | end 82 | end 83 | 84 | test "when mouse changes", %{socket: _socket} do 85 | with_mock LiveCursorsWeb.Presence, 86 | get_by_key: fn _topic, _key -> @presence_getByKey_response end, 87 | update: fn _self, _topic, _key, _metas -> :ok end do 88 | event = %{"mouse_x" => 20, "mouse_y" => 2} 89 | socket = %{id: "123"} 90 | 91 | {:noreply, socket} = Cursors.handle_event("cursor-move", event, socket) 92 | 93 | assert socket != nil 94 | end 95 | end 96 | 97 | test "logging in", %{socket: socket} do 98 | {:noreply, socket} = Cursors.handle_event("login", nil, socket) 99 | assert socket != nil 100 | end 101 | 102 | test "logging out", %{socket: socket} do 103 | {:noreply, socket} = Cursors.handle_event("logout", nil, socket) 104 | assert socket != nil 105 | end 106 | end 107 | end 108 | -------------------------------------------------------------------------------- /test/live_cursors_web/views/error_view_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.ErrorViewTest do 2 | use LiveCursorsWeb.ConnCase, async: true 3 | 4 | # Bring render/3 and render_to_string/3 for testing custom views 5 | import Phoenix.View 6 | 7 | test "renders 404.html" do 8 | assert render_to_string(LiveCursorsWeb.ErrorView, "404.html", []) == "Not Found" 9 | end 10 | 11 | test "renders 500.html" do 12 | assert render_to_string(LiveCursorsWeb.ErrorView, "500.html", []) == "Internal Server Error" 13 | end 14 | end 15 | -------------------------------------------------------------------------------- /test/live_cursors_web/views/layout_view_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.LayoutViewTest do 2 | use LiveCursorsWeb.ConnCase, async: true 3 | 4 | # When testing helpers, you may want to import Phoenix.HTML and 5 | # use functions such as safe_to_string() to convert the helper 6 | # result into an HTML string. 7 | # import Phoenix.HTML 8 | end 9 | -------------------------------------------------------------------------------- /test/live_cursors_web/views/page_view_test.exs: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.PageViewTest do 2 | use LiveCursorsWeb.ConnCase, async: true 3 | end 4 | -------------------------------------------------------------------------------- /test/support/conn_case.ex: -------------------------------------------------------------------------------- 1 | defmodule LiveCursorsWeb.ConnCase do 2 | @moduledoc """ 3 | This module defines the test case to be used by 4 | tests that require setting up a connection. 5 | 6 | Such tests rely on `Phoenix.ConnTest` and also 7 | import other functionality to make it easier 8 | to build common data structures and query the data layer. 9 | 10 | Finally, if the test case interacts with the database, 11 | we enable the SQL sandbox, so changes done to the database 12 | are reverted at the end of every test. If you are using 13 | PostgreSQL, you can even run database tests asynchronously 14 | by setting `use LiveCursorsWeb.ConnCase, async: true`, although 15 | this option is not recommended for other databases. 16 | """ 17 | 18 | use ExUnit.CaseTemplate 19 | 20 | using do 21 | quote do 22 | # Import conveniences for testing with connections 23 | import Plug.Conn 24 | import Phoenix.ConnTest 25 | import LiveCursorsWeb.ConnCase 26 | 27 | alias LiveCursorsWeb.Router.Helpers, as: Routes 28 | 29 | # The default endpoint for testing 30 | @endpoint LiveCursorsWeb.Endpoint 31 | end 32 | end 33 | 34 | setup _tags do 35 | {:ok, conn: Phoenix.ConnTest.build_conn()} 36 | end 37 | end 38 | -------------------------------------------------------------------------------- /test/test_helper.exs: -------------------------------------------------------------------------------- 1 | Envar.require_env_file('.env_sample') 2 | ExUnit.start() 3 | --------------------------------------------------------------------------------