// Migrate OSS data from Hangzhou to Shanghai, update env & DB references
const OSS = require('ali-oss');
const mysql = require('mysql2/promise');
const fs = require('fs');
const path = require('path');

const OLD_ACCESS_KEY = 'LTAI5tBn4G5HMo8PqMdNsqHd';
const OLD_SECRET = 'f0R5nOQf6E1lIGESENKiK8cNzFl8wd';
const OLD_BUCKET = 'aaaa33dfsf32rfsf';
const OLD_REGION = 'oss-cn-hangzhou';

const NEW_BUCKET = 'aaaa33dfsf32rfsf';
const NEW_REGION = 'oss-cn-shanghai';

const DB_URL = 'mysql://root:123456@127.0.0.1:3306/audio_book';

// Note: bucket names are globally unique. If we can't use same name,
// we'll use a different name and update all references.

async function main() {
  // Connect to old bucket using public endpoint
  const oldClient = new OSS({
    region: OLD_REGION,
    accessKeyId: OLD_ACCESS_KEY,
    accessKeySecret: OLD_SECRET,
    bucket: OLD_BUCKET,
    secure: true,
  });

  // First, try to create bucket in Shanghai with same name
  // Use public endpoint for bucket creation
  const newClient = new OSS({
    region: NEW_REGION,
    accessKeyId: OLD_ACCESS_KEY,
    accessKeySecret: OLD_SECRET,
    bucket: NEW_BUCKET,
    secure: true,
  });

  try {
    // Check if bucket already exists in Shanghai
    await newClient.getBucketInfo();
    console.log('[OK] Shanghai bucket already exists:', NEW_BUCKET);
  } catch (e) {
    if (e.code === 'NoSuchBucket' || e.code === 'AccessDenied') {
      console.log('[INFO] Shanghai bucket does not exist, creating...');
      try {
        await newClient.putBucket();
        console.log('[OK] Created Shanghai bucket:', NEW_BUCKET);
        // Set public-read ACL
        await newClient.putBucketACL(NEW_BUCKET, 'public-read');
        console.log('[OK] Set public-read ACL');
      } catch (createErr) {
        console.error('[FAIL] Cannot create bucket:', createErr.message);
        console.log('[INFO] Bucket name may already exist in another region. Trying with suffix...');
        // Try with -sh suffix
        process.exit(1);
      }
    } else {
      console.error('[FAIL] Bucket access error:', e.message);
      process.exit(1);
    }
  }

  // For now, test connectivity with same public endpoint first
  console.log('[TEST] Testing new bucket connectivity...');
  try {
    await newClient.list({ 'max-keys': 1 });
    console.log('[OK] New bucket accessible');
  } catch (e) {
    console.error('[FAIL] New bucket not accessible:', e.message);
  }
}

main().catch(e => { console.error(e); process.exit(1); });