├── package.json
├── index.js
└── .gitignore


/package.json:
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 1 | {
 2 |   "name": "url-shortener",
 3 |   "version": "1.0.0",
 4 |   "description": "",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "start": "nodemon ."
 8 |   },
 9 |   "keywords": [],
10 |   "author": "",
11 |   "license": "ISC",
12 |   "dependencies": {
13 |     "nanoid": "^3.1.28"
14 |   }
15 | }
16 | 


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/index.js:
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 1 | const http = require("http");
 2 | const { nanoid } = require("nanoid");
 3 | const url = require("url");
 4 | 
 5 | const server = http.createServer();
 6 | 
 7 | let dataStore = [];
 8 | 
 9 | server.on("request", async (req, res) => {
10 |   const parts = url.parse(req.url, true);
11 |   if (parts.pathname === "/shorten") {
12 |     const buffers = [];
13 |     for await (const chunk of req) {
14 |       buffers.push(chunk);
15 |     }
16 |     const data = Buffer.concat(buffers).toString();
17 |     const url = JSON.parse(data).url;
18 |     const storedModel = dataStore.filter((model) => model.url == url);
19 |     let urlModel;
20 |     if (storedModel.length > 0) {
21 |       urlModel = storedModel[0];
22 |     } else {
23 |       urlModel = {
24 |         url: url,
25 |         shortenUrl: nanoid(),
26 |       };
27 |     }
28 |     dataStore.push(urlModel);
29 |     res.writeHead(201, { "content-type": "application/json" });
30 |     res.end(JSON.stringify(urlModel));
31 |   } else if (parts.query.id) {
32 |     let shortId = parts.query.id;
33 |     const storedModel = dataStore.filter(
34 |       (model) => model.shortenUrl == shortId
35 |     );
36 |     if (storedModel.length > 0) {
37 |       res.writeHead(302, { Location: storedModel[0].url });
38 |       res.end();
39 |     } else {
40 |       res.writeHead(404);
41 |       res.end("Url doesnt exist");
42 |     }
43 |   } else {
44 |     res.writeHead(401);
45 |     res.end("Invalid path");
46 |   }
47 | });
48 | 
49 | server.on("error", (error) => {
50 |   console.error(error.message);
51 | });
52 | 
53 | server.listen(3000);
54 | 


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/.gitignore:
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  1 | # Logs
  2 | logs
  3 | *.log
  4 | npm-debug.log*
  5 | yarn-debug.log*
  6 | yarn-error.log*
  7 | lerna-debug.log*
  8 | .pnpm-debug.log*
  9 | 
 10 | # Diagnostic reports (https://nodejs.org/api/report.html)
 11 | report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 12 | 
 13 | # Runtime data
 14 | pids
 15 | *.pid
 16 | *.seed
 17 | *.pid.lock
 18 | 
 19 | # Directory for instrumented libs generated by jscoverage/JSCover
 20 | lib-cov
 21 | 
 22 | # Coverage directory used by tools like istanbul
 23 | coverage
 24 | *.lcov
 25 | 
 26 | # nyc test coverage
 27 | .nyc_output
 28 | 
 29 | # Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
 30 | .grunt
 31 | 
 32 | # Bower dependency directory (https://bower.io/)
 33 | bower_components
 34 | 
 35 | # node-waf configuration
 36 | .lock-wscript
 37 | 
 38 | # Compiled binary addons (https://nodejs.org/api/addons.html)
 39 | build/Release
 40 | 
 41 | # Dependency directories
 42 | node_modules/
 43 | jspm_packages/
 44 | 
 45 | # Snowpack dependency directory (https://snowpack.dev/)
 46 | web_modules/
 47 | 
 48 | # TypeScript cache
 49 | *.tsbuildinfo
 50 | 
 51 | # Optional npm cache directory
 52 | .npm
 53 | 
 54 | # Optional eslint cache
 55 | .eslintcache
 56 | 
 57 | # Microbundle cache
 58 | .rpt2_cache/
 59 | .rts2_cache_cjs/
 60 | .rts2_cache_es/
 61 | .rts2_cache_umd/
 62 | 
 63 | # Optional REPL history
 64 | .node_repl_history
 65 | 
 66 | # Output of 'npm pack'
 67 | *.tgz
 68 | 
 69 | # Yarn Integrity file
 70 | .yarn-integrity
 71 | 
 72 | # dotenv environment variables file
 73 | .env
 74 | .env.test
 75 | .env.production
 76 | 
 77 | # parcel-bundler cache (https://parceljs.org/)
 78 | .cache
 79 | .parcel-cache
 80 | 
 81 | # Next.js build output
 82 | .next
 83 | out
 84 | 
 85 | # Nuxt.js build / generate output
 86 | .nuxt
 87 | dist
 88 | 
 89 | # Gatsby files
 90 | .cache/
 91 | # Comment in the public line in if your project uses Gatsby and not Next.js
 92 | # https://nextjs.org/blog/next-9-1#public-directory-support
 93 | # public
 94 | 
 95 | # vuepress build output
 96 | .vuepress/dist
 97 | 
 98 | # Serverless directories
 99 | .serverless/
100 | 
101 | # FuseBox cache
102 | .fusebox/
103 | 
104 | # DynamoDB Local files
105 | .dynamodb/
106 | 
107 | # TernJS port file
108 | .tern-port
109 | 
110 | # Stores VSCode versions used for testing VSCode extensions
111 | .vscode-test
112 | 
113 | # yarn v2
114 | .yarn/cache
115 | .yarn/unplugged
116 | .yarn/build-state.yml
117 | .yarn/install-state.gz
118 | .pnp.*
119 | 


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