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import dotenv from 'dotenv';
import 'reflect-metadata';
import {injectable} from 'inversify';
import path from 'path';
import xbytes from 'xbytes';
import {ConditionalKeys} from 'type-fest';
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'),
CACHE_LIMIT_IN_BYTES: xbytes.parseSize(process.env.CACHE_LIMIT ?? '2GB'),
} 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;
readonly CACHE_LIMIT_IN_BYTES!: number;
constructor() {
for (const [key, value] of Object.entries(CONFIG_MAP)) {
if (typeof value === 'undefined') {
console.error(`Missing environment variable for ${key}`);
process.exit(1);
}
if (typeof value === 'number') {
this[key as ConditionalKeys<typeof CONFIG_MAP, number>] = value;
} else if (typeof value === 'string') {
this[key as ConditionalKeys<typeof CONFIG_MAP, string>] = value;
} else {
throw new Error(`Unsupported type for ${key}`);
}
}
}
}
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