#!/usr/bin/env node

/**
 * Translate privacy.json from EN to DE and FR using DeepL API
 *
 * Usage: node scripts/translate-privacy-deepl.js
 *
 * Requires: DEEPL_API_KEY environment variable
 */

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

const DEEPL_API_KEY = process.env.DEEPL_API_KEY;
const API_URL = 'api.deepl.com'; // Pro API endpoint

if (!DEEPL_API_KEY) {
  console.error('❌ ERROR: DEEPL_API_KEY environment variable not set');
  console.error('   Set it with: export DEEPL_API_KEY="your-key-here"');
  process.exit(1);
}

const EN_FILE = path.join(__dirname, '../public/locales/en/privacy.json');
const DE_FILE = path.join(__dirname, '../public/locales/de/privacy.json');
const FR_FILE = path.join(__dirname, '../public/locales/fr/privacy.json');

// Load JSON files
const enData = JSON.parse(fs.readFileSync(EN_FILE, 'utf8'));
const deData = JSON.parse(fs.readFileSync(DE_FILE, 'utf8'));
const frData = JSON.parse(fs.readFileSync(FR_FILE, 'utf8'));

// DeepL API request function
function translateText(text, targetLang) {
  return new Promise((resolve, reject) => {
    const postData = new URLSearchParams({
      auth_key: DEEPL_API_KEY,
      text: text,
      target_lang: targetLang,
      source_lang: 'EN',
      formality: 'default',
      preserve_formatting: '1',
      tag_handling: 'html'
    }).toString();

    const options = {
      hostname: API_URL,
      port: 443,
      path: '/v2/translate',
      method: 'POST',
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
        'Content-Length': Buffer.byteLength(postData)
      }
    };

    const req = https.request(options, (res) => {
      let data = '';

      res.on('data', (chunk) => {
        data += chunk;
      });

      res.on('end', () => {
        if (res.statusCode === 200) {
          const response = JSON.parse(data);
          resolve(response.translations[0].text);
        } else {
          reject(new Error(`DeepL API error: ${res.statusCode} - ${data}`));
        }
      });
    });

    req.on('error', reject);
    req.write(postData);
    req.end();
  });
}

// Recursively translate object
async function translateObject(obj, targetLang) {
  const result = {};
  
  for (const [key, value] of Object.entries(obj)) {
    if (Array.isArray(value)) {
      result[key] = [];
      for (const item of value) {
        if (typeof item === 'string') {
          console.log(`  Translating array item: ${item.substring(0, 50)}...`);
          result[key].push(await translateText(item, targetLang));
          await new Promise(resolve => setTimeout(resolve, 200)); // Rate limit
        } else {
          result[key].push(item);
        }
      }
    } else if (typeof value === 'object' && value !== null) {
      result[key] = await translateObject(value, targetLang);
    } else if (typeof value === 'string') {
      console.log(`  Translating: ${key}`);
      result[key] = await translateText(value, targetLang);
      await new Promise(resolve => setTimeout(resolve, 200)); // Rate limit
    } else {
      result[key] = value;
    }
  }
  
  return result;
}

async function main() {
  try {
    console.log('🌍 Starting privacy.json translation with DeepL\n');

    // Translate Section 6 only (the new Umami content)
    console.log('📝 Translating Section 6 to German (DE)...');
    deData.section_6 = await translateObject(enData.section_6, 'DE');
    deData.header.last_updated = await translateText(enData.header.last_updated, 'DE');
    
    console.log('\n📝 Translating Section 6 to French (FR)...');
    frData.section_6 = await translateObject(enData.section_6, 'FR');
    frData.header.last_updated = await translateText(enData.header.last_updated, 'FR');

    // Save files
    fs.writeFileSync(DE_FILE, JSON.stringify(deData, null, 2) + '\n', 'utf8');
    fs.writeFileSync(FR_FILE, JSON.stringify(frData, null, 2) + '\n', 'utf8');

    console.log('\n✅ Translation complete!');
    console.log(`   DE: ${DE_FILE}`);
    console.log(`   FR: ${FR_FILE}`);

  } catch (error) {
    console.error('\n❌ Translation failed:', error.message);
    process.exit(1);
  }
}

main();