Reorg third party services & config

src/services/config.ts

@@ -0,0 +1,36 @@
+import dotenv from 'dotenv';
+import {injectable} from 'inversify';
+import path from 'path';
+dotenv.config();
+
+export const DATA_DIR = path.resolve(process.env.DATA_DIR ? process.env.DATA_DIR : './data');
+
+const CONFIG_MAP = {
+  DISCORD_TOKEN: process.env.DISCORD_TOKEN,
+  YOUTUBE_API_KEY: process.env.YOUTUBE_API_KEY,
+  SPOTIFY_CLIENT_ID: process.env.SPOTIFY_CLIENT_ID,
+  SPOTIFY_CLIENT_SECRET: process.env.SPOTIFY_CLIENT_SECRET,
+  DATA_DIR,
+  CACHE_DIR: path.join(DATA_DIR, 'cache')
+} as const;
+
+@injectable()
+export default class Config {
+  readonly DISCORD_TOKEN!: string;
+  readonly YOUTUBE_API_KEY!: string;
+  readonly SPOTIFY_CLIENT_ID!: string;
+  readonly SPOTIFY_CLIENT_SECRET!: string;
+  readonly DATA_DIR!: string;
+  readonly CACHE_DIR!: string;
+
+  constructor() {
+    for (const [key, value] of Object.entries(CONFIG_MAP)) {
+      if (typeof value === 'undefined') {
+        console.error(`Missing environment variable for ${key}`);
+        process.exit(1);
+      }
+
+      this[key as keyof typeof CONFIG_MAP] = value;
+    }
+  }
+}