import fetch from 'node-fetch';
import fs from 'fs';

// Lorcana sets to import
const LORCANA_SETS = [
  { code: 'tfc', name: 'The First Chapter', lorcastCode: '1' },
  { code: 'rotf', name: 'Rise of the Floodborn', lorcastCode: '2' },
  { code: 'ink', name: 'Into the Inklands', lorcastCode: '3' }
];

// Helper function to delay execution
const delay = (ms) => new Promise(resolve => setTimeout(resolve, ms));

// Helper function to fetch with retry logic
async function fetchWithRetry(url, maxRetries = 3, delayMs = 2000) {
  for (let attempt = 1; attempt <= maxRetries; attempt++) {
    try {
      const response = await fetch(url, {
        headers: {
          'User-Agent': 'TCG-Vault/1.0',
          'Accept': 'application/json'
        },
        timeout: 30000 // 30 second timeout
      });
      
      if (response.ok) {
        return response;
      }
      
      // If it's a 404, don't retry
      if (response.status === 404) {
        throw new Error(`Set not found: ${response.status}`);
      }
      
      // If it's a 504 or 503, wait longer before retry
      if (response.status === 504 || response.status === 503) {
        console.log(`Attempt ${attempt}: Got ${response.status}, waiting ${delayMs * attempt}ms before retry...`);
        await delay(delayMs * attempt);
        continue;
      }
      
      throw new Error(`Lorcana API error: ${response.status}`);
    } catch (error) {
      if (attempt === maxRetries) {
        throw error;
      }
      console.log(`Attempt ${attempt} failed:`, error.message);
      await delay(delayMs * attempt);
    }
  }
}

async function importLorcanaSet(setCode, setName, lorcastCode) {
  try {
    console.log(`\n🎨 Importing Lorcana set: ${setName} (${setCode})`);
    
    // Fetch cards directly from Lorcast API
    const response = await fetchWithRetry(`https://api.lorcast.com/v0/cards/search?q=set:${lorcastCode}&unique=prints`);
    const data = await response.json();
    const cards = data.results || [];

    if (cards.length === 0) {
      console.log(`❌ No cards found for set ${setName}`);
      return { success: false, error: 'No cards found', importedCount: 0 };
    }

    console.log(`📊 Found ${cards.length} cards for set ${setName}`);

    let importedCount = 0;
    let skippedCount = 0;

    // Import all cards via our API in a single batch
    const importResponse = await fetch('http://localhost:3000/api/cards/import-lorcana', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        setCode: setCode,
        setName: setName
      })
    });

    const importResult = await importResponse.json();
    
    if (importResult.success) {
      importedCount = importResult.imported || 0;
      skippedCount = importResult.skipped || 0;
      console.log(`✅ Import completed for ${setName}: ${importedCount} imported, ${skippedCount} skipped`);
    } else {
      console.log(`❌ Failed to import ${setName}: ${importResult.error}`);
      return { success: false, error: importResult.error };
    }

    return { success: true, importedCount, skippedCount, total: cards.length };

  } catch (error) {
    console.log(`❌ Error importing ${setName}: ${error.message}`);
    return { success: false, error: error.message };
  }
}

async function importAllLorcana() {
  console.log('🎨 Starting Lorcana card import...\n');
  
  const results = {
    total: 0,
    successful: 0,
    failed: 0,
    sets: []
  };

  for (const set of LORCANA_SETS) {
    const result = await importLorcanaSet(set.code, set.name, set.lorcastCode);
    results.sets.push({ ...set, ...result });
    
    if (result.success) {
      results.successful++;
      results.total += result.importedCount || 0;
    } else {
      results.failed++;
    }
    
    // Add a delay between sets
    await delay(2000);
  }

  // Print summary
  console.log('\n📊 Lorcana Import Summary:');
  console.log('========================');
  console.log(`Total sets: ${LORCANA_SETS.length}`);
  console.log(`Successful: ${results.successful}`);
  console.log(`Failed: ${results.failed}`);
  console.log(`Total cards imported: ${results.total}`);
  console.log(`Success rate: ${((results.successful / LORCANA_SETS.length) * 100).toFixed(1)}%`);

  // Save detailed results
  const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
  const filename = `lorcana-import-results-${timestamp}.json`;
  
  fs.writeFileSync(filename, JSON.stringify(results, null, 2));
  console.log(`\n📄 Detailed results saved to: ${filename}`);

  return results;
}

// Run the import if this script is executed directly
if (import.meta.url === `file://${process.argv[1]}`) {
  importAllLorcana()
    .then(() => {
      console.log('\n🎉 Lorcana import completed!');
      process.exit(0);
    })
    .catch((error) => {
      console.error('❌ Import failed:', error);
      process.exit(1);
    });
}

export { importAllLorcana, importLorcanaSet };