├── .gitignore
├── bin
    ├── coindex-check.js
    ├── coindex-key.js
    └── coindex.js
├── commands
    ├── check.js
    └── key.js
├── lib
    ├── CryptoAPI.js
    └── KeyManager.js
├── package-lock.json
├── package.json
├── readme.md
└── utils
    └── validation.js


/.gitignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | node_modules/


--------------------------------------------------------------------------------
/bin/coindex-check.js:
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 1 | const program = require('commander');
 2 | const check = require('../commands/check');
 3 | 
 4 | program
 5 |   .command('price')
 6 |   .description('Check price of coins')
 7 |   .option(
 8 |     '--coin <type>',
 9 |     'Add specific coin types in CSV format',
10 |     'BTC,ETH,XRP'
11 |   )
12 |   .option('--cur <currency>', 'Change the currency', 'USD')
13 |   .action(cmd => check.price(cmd));
14 | 
15 | program.parse(process.argv);
16 | 
17 | // If no args, output help
18 | if (!process.argv[2]) {
19 |   program.outputHelp();
20 | }
21 | 


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/bin/coindex-key.js:
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 1 | const program = require('commander');
 2 | const key = require('../commands/key');
 3 | 
 4 | program
 5 |   .command('set')
 6 |   .description('Set API Key -- Get at https://nomics.com')
 7 |   .action(key.set);
 8 | 
 9 | program
10 |   .command('show')
11 |   .description('Show API Key')
12 |   .action(key.show);
13 | 
14 | program
15 |   .command('remove')
16 |   .description('Remove API Key')
17 |   .action(key.remove);
18 | 
19 | program.parse(process.argv);
20 | 
21 | // If no args, output help
22 | if (!process.argv[2]) {
23 |   program.outputHelp();
24 | }
25 | 


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/bin/coindex.js:
--------------------------------------------------------------------------------
 1 | #!/usr/bin/env node
 2 | const program = require('commander');
 3 | const pkg = require('../package.json');
 4 | 
 5 | program
 6 |   .version(pkg.version)
 7 |   .command('key', 'Manage API Key -- https://nomics.com')
 8 |   .command('check', 'Check Coin Price Info')
 9 |   .parse(process.argv);
10 | 


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/commands/check.js:
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 1 | const KeyManager = require('../lib/KeyManager');
 2 | const CryptoAPI = require('../lib/CryptoAPI');
 3 | 
 4 | const check = {
 5 |   async price(cmd) {
 6 |     try {
 7 |       keyManager = new KeyManager();
 8 |       const key = keyManager.getKey();
 9 | 
10 |       const api = new CryptoAPI(key);
11 | 
12 |       const priceOutputData = await api.getPriceData(cmd.coin, cmd.cur);
13 | 
14 |       console.log(priceOutputData);
15 |     } catch (err) {
16 |       console.error(err.message.red);
17 |     }
18 |   }
19 | };
20 | 
21 | module.exports = check;
22 | 


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/commands/key.js:
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 1 | const inquirer = require('inquirer');
 2 | const colors = require('colors');
 3 | const KeyManager = require('../lib/KeyManager');
 4 | const { isRequired } = require('../utils/validation');
 5 | 
 6 | const key = {
 7 |   async set() {
 8 |     const keyManager = new KeyManager();
 9 |     const input = await inquirer.prompt([
10 |       {
11 |         type: 'input',
12 |         name: 'key',
13 |         message: 'Enter API Key '.green + 'https://nomics.com',
14 |         validate: isRequired
15 |       }
16 |     ]);
17 | 
18 |     const key = keyManager.setKey(input.key);
19 | 
20 |     if (key) {
21 |       console.log('API Key Set'.blue);
22 |     }
23 |   },
24 |   show() {
25 |     try {
26 |       const keyManager = new KeyManager();
27 |       const key = keyManager.getKey();
28 | 
29 |       console.log('Current API Key: ', key.yellow);
30 | 
31 |       return key;
32 |     } catch (err) {
33 |       console.error(err.message.red);
34 |     }
35 |   },
36 |   remove() {
37 |     try {
38 |       const keyManager = new KeyManager();
39 |       keyManager.deleteKey();
40 | 
41 |       console.log('Key Removed'.blue);
42 | 
43 |       return;
44 |     } catch (err) {
45 |       console.error(err.message.red);
46 |     }
47 |   }
48 | };
49 | 
50 | module.exports = key;
51 | 


--------------------------------------------------------------------------------
/lib/CryptoAPI.js:
--------------------------------------------------------------------------------
 1 | const axios = require('axios');
 2 | const colors = require('colors');
 3 | 
 4 | class CryptoAPI {
 5 |   constructor(apiKey) {
 6 |     this.apiKey = apiKey;
 7 |     this.baseUrl = 'https://api.nomics.com/v1/currencies/ticker';
 8 |   }
 9 | 
10 |   async getPriceData(coinOption, curOption) {
11 |     try {
12 |       // Formatter for currency
13 |       const formatter = new Intl.NumberFormat('en-US', {
14 |         style: 'currency',
15 |         currency: curOption
16 |       });
17 | 
18 |       const res = await axios.get(
19 |         `${this.baseUrl}?key=${this.apiKey}&ids=${coinOption}&convert=${curOption}`
20 |       );
21 | 
22 |       let output = '';
23 | 
24 |       res.data.forEach(coin => {
25 |         output += `Coin: ${coin.symbol.yellow} (${coin.name}) | Price: ${
26 |           formatter.format(coin.price).green
27 |         } | Rank: ${coin.rank.blue}\n`;
28 |       });
29 | 
30 |       return output;
31 |     } catch (err) {
32 |       handleAPIError(err);
33 |     }
34 |   }
35 | }
36 | 
37 | function handleAPIError(err) {
38 |   if (err.response.status === 401) {
39 |     throw new Error('Your API key is invalid - Go to https://nomics.com');
40 |   } else if (err.response.status === 404) {
41 |     throw new Error('Your API is not responding');
42 |   } else {
43 |     throw new Error('Something is not working');
44 |   }
45 | }
46 | 
47 | module.exports = CryptoAPI;
48 | 


--------------------------------------------------------------------------------
/lib/KeyManager.js:
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 1 | const Configstore = require('configstore');
 2 | const pkg = require('../package.json');
 3 | 
 4 | class KeyManager {
 5 |   constructor() {
 6 |     this.conf = new Configstore(pkg.name);
 7 |   }
 8 | 
 9 |   setKey(key) {
10 |     this.conf.set('apiKey', key);
11 |     return key;
12 |   }
13 | 
14 |   getKey() {
15 |     const key = this.conf.get('apiKey');
16 | 
17 |     if (!key) {
18 |       throw new Error('No API Key Found - Get a key at https://nomics.com');
19 |     }
20 | 
21 |     return key;
22 |   }
23 | 
24 |   deleteKey() {
25 |     const key = this.conf.get('apiKey');
26 | 
27 |     if (!key) {
28 |       throw new Error('No API Key Found - Get a key at https://nomics.com');
29 |     }
30 | 
31 |     this.conf.delete('apiKey');
32 | 
33 |     return;
34 |   }
35 | }
36 | 
37 | module.exports = KeyManager;
38 | 


--------------------------------------------------------------------------------
/package-lock.json:
--------------------------------------------------------------------------------
  1 | {
  2 |   "name": "coindex",
  3 |   "version": "1.0.0",
  4 |   "lockfileVersion": 1,
  5 |   "requires": true,
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--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "coindex",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "bin": "./bin/coindex.js",
 7 |   "scripts": {
 8 |     "test": "echo \"Error: no test specified\" && exit 1"
 9 |   },
10 |   "author": "Brad Traversy",
11 |   "license": "MIT",
12 |   "dependencies": {
13 |     "axios": "^0.19.2",
14 |     "colors": "^1.4.0",
15 |     "commander": "^5.0.0",
16 |     "configstore": "^5.0.1",
17 |     "inquirer": "^7.1.0"
18 |   }
19 | }
20 | 


--------------------------------------------------------------------------------
/readme.md:
--------------------------------------------------------------------------------
 1 | # Coindex CLI
 2 | 
 3 | Command line interface written in Node.js to check cryptocurrency prices
 4 | 
 5 | Register an API key at https://nomics.com
 6 | 
 7 | ## Usage
 8 | 
 9 | ```
10 | npm install
11 | 
12 | npm link
13 | ```
14 | 
15 | ## Commands
16 | 
17 | ```
18 | # Help & Commands
19 | coindex -h
20 | 
21 | # Version
22 | coindex -V
23 | 
24 | # API Key Commands
25 | coindex key set
26 | coindex key show
27 | coindex key remove
28 | 
29 | # Crypto Check Commands
30 | coindex check price
31 | 
32 | # Check Specific Coins (default: BTN,ETH,XRP)
33 | coindex check --coin=BTC,ETH
34 | 
35 | # Choose Currency (Default: USD)
36 | coindex check --cur=EUR
37 | ```
38 | 
39 | ### Version
40 | 
41 | 1.0.0
42 | 
43 | ### License
44 | 
45 | MIT
46 | 


--------------------------------------------------------------------------------
/utils/validation.js:
--------------------------------------------------------------------------------
1 | // Required fields
2 | const isRequired = input => (input === '' ? 'This value is required' : true);
3 | 
4 | module.exports = { isRequired };
5 | 


--------------------------------------------------------------------------------