const fs = require('fs');
const path = require('path');
const https = require('https');

// Configuration
const FILES = [
  {
    name: '39f2x83-products.csv',
    url: 'https://feeds.acherryontop.com/39f2x83-products.csv'
  },
  {
    name: '39f2x83-orders.csv',
    url: 'https://feeds.acherryontop.com/39f2x83-orders.csv'
  },
  {
    name: '39f2x83-purchase_orders.csv',
    url: 'https://feeds.acherryontop.com/39f2x83-purchase_orders.csv'
  }
];

const CSV_DIR = path.join(__dirname, '..', 'csv');

// Ensure CSV directory exists
if (!fs.existsSync(CSV_DIR)) {
  fs.mkdirSync(CSV_DIR, { recursive: true });
}

// Function to download a file
function downloadFile(url, filePath) {
  return new Promise((resolve, reject) => {
    const file = fs.createWriteStream(filePath);
    
    https.get(url, response => {
      if (response.statusCode !== 200) {
        reject(new Error(`Failed to download: ${response.statusCode} ${response.statusMessage}`));
        return;
      }

      const totalSize = parseInt(response.headers['content-length'], 10);
      let downloadedSize = 0;

      response.on('data', chunk => {
        downloadedSize += chunk.length;
        const progress = (downloadedSize / totalSize * 100).toFixed(2);
        process.stdout.write(`\rDownloading ${path.basename(filePath)}: ${progress}%`);
      });

      response.pipe(file);

      file.on('finish', () => {
        process.stdout.write('\n');
        file.close();
        resolve();
      });
    }).on('error', error => {
      fs.unlink(filePath, () => {}); // Delete the file if download failed
      reject(error);
    });

    file.on('error', error => {
      fs.unlink(filePath, () => {}); // Delete the file if there was an error
      reject(error);
    });
  });
}

// Main function to update all files
async function updateFiles() {
  console.log('Starting CSV file updates...');

  for (const file of FILES) {
    const filePath = path.join(CSV_DIR, file.name);
    
    try {
      // Delete existing file if it exists
      if (fs.existsSync(filePath)) {
        console.log(`Removing existing file: ${file.name}`);
        fs.unlinkSync(filePath);
      }

      // Download new file
      console.log(`Downloading ${file.name}...`);
      await downloadFile(file.url, filePath);
      console.log(`Successfully updated ${file.name}`);
    } catch (error) {
      console.error(`Error updating ${file.name}:`, error.message);
    }
  }

  console.log('CSV file update complete!');
}

// Run the update
updateFiles().catch(error => {
  console.error('Update failed:', error);
  process.exit(1);
});