interface ServerConfig {
  PORT: number;
  HOST: string;
  S3_ACCESS_KEY: string;
  S3_SECRET_KEY: string;
  S3_BUCKET_NAME: string;
  S3_ENDPOINT_URL: string;
  REMOTION_COMPOSITION_ID: string;
  REDIS_URL: string;
  MAX_CONCURRENT_RENDERS: number;
}

function requireEnv(key: string): string {
  const value = Bun.env[key];
  if (!value) {
    throw new Error(`Missing required environment variable: ${key}`);
  }
  return value;
}

export const serverConfig: ServerConfig = {
  PORT: Number(Bun.env.PORT) || 8001,
  HOST: Bun.env.HOST || "0.0.0.0",
  S3_ACCESS_KEY: requireEnv("S3_ACCESS_KEY"),
  S3_SECRET_KEY: requireEnv("S3_SECRET_KEY"),
  S3_BUCKET_NAME: requireEnv("S3_BUCKET_NAME"),
  S3_ENDPOINT_URL: Bun.env.S3_ENDPOINT_URL || "http://localhost:9000",
  REMOTION_COMPOSITION_ID: Bun.env.REMOTION_COMPOSITION_ID || "CaptionedVideo",
  REDIS_URL: Bun.env.REDIS_URL || "redis://localhost:6379",
  MAX_CONCURRENT_RENDERS: Number(Bun.env.MAX_CONCURRENT_RENDERS) || 2,
};