require('dotenv').config();
const { 
  createDatabaseBackup, 
  downloadBackupFile, 
  sendTelegramBroadcast,
  formatBytes,
  config: sqlConfig
} = require('./index.js');
const fs = require('fs');
const path = require('path');

async function createAndDownloadBackup() {
  try {
    console.log('='.repeat(50));
    console.log('FRESH BACKUP CREATION');
    console.log('='.repeat(50));
    console.log(`Database: ${process.env.MSSQL_DATABASE}`);
    console.log(`Server: ${process.env.MSSQL_SERVER}:${process.env.MSSQL_PORT}`);
    console.log('');

    // Step 1: Create fresh backup on SQL Server
    console.log('Step 1: Creating fresh database backup on SQL Server...');
    const serverBackupPath = await createDatabaseBackup();
    console.log(`Backup created on server: ${serverBackupPath}`);
    console.log('');

    // Step 2: Download the backup file to local folder
    console.log('Step 2: Downloading backup file to local folder...');
    const localBackupPath = await downloadBackupFile();
    console.log(`Backup downloaded to: ${localBackupPath}`);
    console.log('');

    // Step 3: Check local file and show details
    if (fs.existsSync(localBackupPath)) {
      const stats = fs.statSync(localBackupPath);
      const absolutePath = path.resolve(localBackupPath);
      
      console.log('='.repeat(50));
      console.log('BACKUP COMPLETED SUCCESSFULLY');
      console.log('='.repeat(50));
      console.log(`Local file: ${absolutePath}`);
      console.log(`File size: ${formatBytes(stats.size)}`);
      console.log(`Created: ${stats.ctime.toISOString()}`);
      console.log('');

      // Send success notification
      const when = new Date().toISOString();
      const msg = `Fresh backup created and downloaded ✅\nDB: ${process.env.MSSQL_DATABASE}\nFile: ${localBackupPath}\nSize: ${formatBytes(stats.size)}\nServer: ${process.env.MSSQL_SERVER}:${process.env.MSSQL_PORT}\nTime: ${when}`;
      await sendTelegramBroadcast('all', msg);

      return {
        success: true,
        localPath: absolutePath,
        serverPath: serverBackupPath,
        size: stats.size,
        database: process.env.MSSQL_DATABASE
      };
    } else {
      throw new Error(`Local backup file not found: ${localBackupPath}`);
    }

  } catch (err) {
    console.error('');
    console.error('='.repeat(50));
    console.error('BACKUP FAILED');
    console.error('='.repeat(50));
    console.error('Error:', err.message);
    console.error('');

    // Send error notification
    const when = new Date().toISOString();
    const msg = `Fresh backup failed 🔴\nDB: ${process.env.MSSQL_DATABASE}\nServer: ${process.env.MSSQL_SERVER}:${process.env.MSSQL_PORT}\nTime: ${when}\nError: ${err.message}`;
    await sendTelegramBroadcast('errors', msg);

    throw err;
  }
}

// Run if called directly
if (require.main === module) {
  createAndDownloadBackup()
    .then((result) => {
      console.log('Fresh backup process completed successfully!');
      console.log(`Ready to use: ${result.localPath}`);
      process.exit(0);
    })
    .catch((error) => {
      console.error('Fresh backup process failed:', error.message);
      process.exit(1);
    });
}

module.exports = { createAndDownloadBackup };