const BygmaPrisbogImportService = require('./backend/src/services/bygmaPrisbogImportService');
const databaseService = require('./backend/src/services/databaseService');

async function debugImportWarnings() {
  console.log('🔍 Debugging import warnings...');
  
  const importService = new BygmaPrisbogImportService();
  
  try {
    // Clear previous imports for fresh debug
    await databaseService.query('DELETE FROM bygma_products');
    await databaseService.query('DELETE FROM bygma_price_history');
    console.log('📊 Cleared database for fresh debug run');
    
    // Run import with enhanced logging
    const filePath = './Bygma-Prisbog-DK-1000070-20241201-093000.csv';
    const result = await importService.importFromCSV(filePath);
    
    console.log('\n📈 Import Results:');
    console.log(`   - Total rows: ${result.stats.totalRows}`);
    console.log(`   - Successful: ${result.stats.successfulRows}`);
    console.log(`   - Failed: ${result.stats.failedRows}`);
    console.log(`   - New products: ${result.stats.newProducts}`);
    console.log(`   - Updated prices: ${result.stats.updatedPrices}`);
    
    if (result.errors.length > 0) {
      console.log('\n⚠️  First 20 errors:');
      result.errors.slice(0, 20).forEach((error, index) => {
        console.log(`${index + 1}. Line ${error.line}: ${error.error}`);
        console.log(`   Data: ${JSON.stringify(error.data).substring(0, 200)}...`);
      });
      
      // Analyze error patterns
      console.log('\n📊 Error Analysis:');
      const errorTypes = {};
      result.errors.forEach(error => {
        const errorType = error.error.split(':')[0] || error.error;
        errorTypes[errorType] = (errorTypes[errorType] || 0) + 1;
      });
      
      Object.entries(errorTypes).forEach(([type, count]) => {
        console.log(`   - ${type}: ${count} occurrences`);
      });
    }
    
  } catch (error) {
    console.error('❌ Debug failed:', error.message);
  } finally {
    await databaseService.close();
  }
}

debugImportWarnings();