/**
 * S3 Storage Service
 */

interface S3Config {
  bucket: string;
  region: string;
  accessKey: string;
  secretKey: string;
}

export function getS3Config(): S3Config {
  return {
    bucket: process.env.STORAGE_BUCKET || '',
    region: process.env.S3_REGION || 'us-east-1',
    accessKey: process.env.S3_ACCESS_KEY || '',
    secretKey: process.env.S3_SECRET_KEY || '',
  };
}

export async function uploadToStorage(
  filename: string,
  filePath: string,
  contentType: string
): Promise<string> {
  const config = getS3Config();

  if (!config.bucket || !config.accessKey) {
    throw new Error('S3 credentials not configured');
  }

  try {
    console.log(`[Storage] Uploading ${filename} to ${config.bucket}`);
    // Placeholder: actual S3 upload logic
    return `s3://${config.bucket}/${filename}`;
  } catch (error) {
    console.error('[Storage Error]', error);
    throw error;
  }
}

export async function downloadFromStorage(key: string, outputPath: string): Promise<void> {
  const config = getS3Config();

  if (!config.bucket || !config.accessKey) {
    throw new Error('S3 credentials not configured');
  }

  try {
    console.log(`[Storage] Downloading ${key} from ${config.bucket}`);
    // Placeholder: actual S3 download logic
  } catch (error) {
    console.error('[Storage Error]', error);
    throw error;
  }
}

export default {
  getS3Config,
  uploadToStorage,
  downloadFromStorage,
};