fetch playlists

.env.example

···
+SPOTIFY_CLIENT_ID=your_client_id_here
+SPOTIFY_CLIENT_SECRET=your_client_secret_here

.gitignore

···
+node_modules/
+.env
+*.log

package.json

···
+{
+  "name": "spotify-albums",
+  "version": "1.0.0",
+  "type": "module",
+  "scripts": {
+    "playlists": "tsx scripts/playlists.ts"
+  },
+  "dependencies": {
+    "dotenv": "^16.4.5",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@types/node": "^20.11.5",
+    "typescript": "^5.3.3",
+    "tsx": "^4.7.0"
+  }
+}

pnpm-lock.yaml

···
+lockfileVersion: '9.0'
+
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
+importers:
+
+  .:
+    dependencies:
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+        specifier: ^16.4.5
+        version: 16.6.1
+      node-fetch:
+        specifier: ^3.3.2
+        version: 3.3.2
+    devDependencies:
+      '@types/node':
+        specifier: ^20.11.5
+        version: 20.19.27
+      tsx:
+        specifier: ^4.7.0
+        version: 4.21.0
+      typescript:
+        specifier: ^5.3.3
+        version: 5.9.3
+
+packages:
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
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+    os: [darwin]
+
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
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+
+  '@esbuild/linux-arm64@0.27.2':
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+    engines: {node: '>=18'}
+    cpu: [arm64]
+    os: [linux]
+
+  '@esbuild/linux-arm@0.27.2':
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
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+  '@esbuild/openbsd-x64@0.27.2':
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+    engines: {node: '>=18'}
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+    engines: {node: '>=18'}
+    cpu: [x64]
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+
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+    engines: {node: '>= 12'}
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+    engines: {node: ^8.16.0 || ^10.6.0 || >=11.0.0}
+    os: [darwin]
+
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+
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+    deprecated: Use your platform's native DOMException instead
+
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+
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+
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+    engines: {node: '>= 8'}
+
+snapshots:
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+
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+    optional: true
+
+  '@esbuild/android-arm@0.27.2':
+    optional: true
+
+  '@esbuild/android-x64@0.27.2':
+    optional: true
+
+  '@esbuild/darwin-arm64@0.27.2':
+    optional: true
+
+  '@esbuild/darwin-x64@0.27.2':
+    optional: true
+
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+    optional: true
+
+  '@esbuild/freebsd-x64@0.27.2':
+    optional: true
+
+  '@esbuild/linux-arm64@0.27.2':
+    optional: true
+
+  '@esbuild/linux-arm@0.27.2':
+    optional: true
+
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+    optional: true
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+    optional: true
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+    optional: true
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+    optional: true
+
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+    optional: true
+
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+    optional: true
+
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+    optional: true
+
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+    optional: true
+
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+    optional: true
+
+  '@esbuild/win32-x64@0.27.2':
+    optional: true
+
+  '@types/node@20.19.27':
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+
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+
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+
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+      '@esbuild/win32-x64': 0.27.2
+
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+      web-streams-polyfill: 3.3.3
+
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+
+  fsevents@2.3.3:
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+
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+
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+
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+      get-tsconfig: 4.13.0
+    optionalDependencies:
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+
+  typescript@5.9.3: {}
+
+  undici-types@6.21.0: {}
+
+  web-streams-polyfill@3.3.3: {}

scripts/playlists.ts

···
+import dotenv from 'dotenv';
+import fetch from 'node-fetch';
+import readline from 'readline';
+import { createServer } from 'http';
+import { writeFile, mkdir } from 'fs/promises';
+import { join } from 'path';
+
+dotenv.config();
+
+interface SpotifyPlaylist {
+  id: string;
+  name: string;
+  tracks: {
+    total: number;
+  };
+}
+
+interface PlaylistsResponse {
+  items: SpotifyPlaylist[];
+  next: string | null;
+}
+
+interface TokenResponse {
+  access_token: string;
+  refresh_token: string;
+  expires_in: number;
+}
+
+interface SpotifyTrack {
+  track: {
+    name: string;
+    artists: { name: string }[];
+    album: { name: string };
+  };
+}
+
+interface TracksResponse {
+  items: SpotifyTrack[];
+  next: string | null;
+}
+
+const PORT = 8888;
+const REDIRECT_URI = `http://127.0.0.1:${PORT}/callback`;
+const SCOPES = 'playlist-read-private user-library-read';
+const OUTPUT_DIR = 'playlists';
+
+function getAuthUrl(): string {
+  const params = new URLSearchParams({
+    client_id: process.env.SPOTIFY_CLIENT_ID!,
+    response_type: 'code',
+    redirect_uri: REDIRECT_URI,
+    scope: SCOPES
+  });
+  return `https://accounts.spotify.com/authorize?${params}`;
+}
+
+async function getAccessToken(code: string): Promise<TokenResponse> {
+  const response = await fetch('https://accounts.spotify.com/api/token', {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+    body: new URLSearchParams({
+      grant_type: 'authorization_code',
+      code,
+      redirect_uri: REDIRECT_URI,
+      client_id: process.env.SPOTIFY_CLIENT_ID!,
+      client_secret: process.env.SPOTIFY_CLIENT_SECRET!
+    })
+  });
+  
+  if (!response.ok) {
+    throw new Error(`Failed to get access token: ${response.statusText}`);
+  }
+  
+  return await response.json() as TokenResponse;
+}
+
+async function getAllPlaylists(token: string): Promise<SpotifyPlaylist[]> {
+  let url: string | null = 'https://api.spotify.com/v1/me/playlists?limit=50';
+  const playlists: SpotifyPlaylist[] = [];
+  
+  while (url) {
+    const response = await fetch(url, {
+      headers: { 'Authorization': `Bearer ${token}` }
+    });
+    
+    if (!response.ok) {
+      throw new Error(`Failed to fetch playlists: ${response.statusText}`);
+    }
+    
+    const data = await response.json() as PlaylistsResponse;
+    playlists.push(...data.items);
+    url = data.next;
+  }
+  
+  return playlists;
+}
+
+function waitForAuthCode(): Promise<string> {
+  return new Promise((resolve, reject) => {
+    const server = createServer((req, res) => {
+      const url = new URL(req.url!, `http://${req.headers.host}`);
+      const code = url.searchParams.get('code');
+      
+      if (code) {
+        res.writeHead(200, { 'Content-Type': 'text/html' });
+        res.end('<h1>Authentication successful! You can close this window.</h1>');
+        server.close();
+        resolve(code);
+      } else {
+        const error = url.searchParams.get('error');
+        res.writeHead(400, { 'Content-Type': 'text/html' });
+        res.end(`<h1>Authentication failed: ${error}</h1>`);
+        server.close();
+        reject(new Error(`Authentication failed: ${error}`));
+      }
+    });
+    
+    server.listen(PORT, () => {
+      console.log(`Server listening on port ${PORT}`);
+    });
+  });
+}
+
+async function main() {
+  try {
+    console.log('Opening browser for authentication...');
+    console.log(getAuthUrl());
+    
+    const code = await waitForAuthCode();
+    const { access_token } = await getAccessToken(code);
+    
+    const playlists = await getAllPlaylists(access_token);
+    console.log(`\nFound ${playlists.length} playlists:`);
+    playlists.forEach(p => console.log(`- ${p.name} (${p.tracks.total} tracks)`));
+  } catch (error) {
+    console.error('Error:', (error as Error).message);
+  }
+}
+
+main();

tsconfig.json

···
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ES2022",
+    "moduleResolution": "node",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "resolveJsonModule": true
+  }
+}