/**
 * Truncate Context table and sync model with database
 * This will:
 * 1. Delete all data in Context table
 * 2. Sync model schema with database (update structure if needed)
 */

const { sequelize } = require('./config/database');
const { Context } = require('./models');

// Configuration
const CONFIRM_TRUNCATE = true; // Set to true to actually truncate
const FORCE_SYNC = false; // Set to true to drop and recreate table

async function truncateAndSyncContext() {
  try {
    console.log('🔄 Starting Context truncate and sync...\n');
    
    await sequelize.authenticate();
    console.log('✅ Database connection OK\n');

    // Show current stats before truncate
    try {
      const count = await Context.count();
      console.log(`📊 Current Context records: ${count}\n`);
    } catch (error) {
      console.log('⚠️  Table may not exist yet\n');
    }

    // Step 1: Truncate table
    if (CONFIRM_TRUNCATE) {
      console.log('🗑️  Truncating Context table...');
      
      try {
        await sequelize.query('SET FOREIGN_KEY_CHECKS = 0');
        await Context.destroy({
          where: {},
          truncate: true
        });
        await sequelize.query('SET FOREIGN_KEY_CHECKS = 1');
        console.log('✅ Context table truncated successfully\n');
      } catch (error) {
        console.log(`⚠️  Truncate warning: ${error.message}\n`);
      }
    } else {
      console.log('⏭️  Skipping truncate (CONFIRM_TRUNCATE is false)\n');
    }

    // Step 2: Sync model with database
    console.log('🔄 Syncing Context model with database...');
    console.log(`   Force mode: ${FORCE_SYNC ? 'ON (will drop table)' : 'OFF (will alter)'}\n`);
    
    await Context.sync({ force: FORCE_SYNC, alter: !FORCE_SYNC });
    console.log('✅ Context model synced successfully\n');

    // Show table structure
    const [tableInfo] = await sequelize.query('DESCRIBE context');
    console.log('📋 Current Context table structure:');
    console.log('---');
    tableInfo.forEach(field => {
      console.log(`  ${field.Field}: ${field.Type}${field.Null === 'NO' ? ' NOT NULL' : ''}`);
    });
    console.log('---\n');

    // Final count
    const finalCount = await Context.count();
    console.log(`📊 Final Context records: ${finalCount}\n`);

    console.log('✅ Operation complete!');
    process.exit(0);
  } catch (error) {
    console.error('❌ Error:', error.message);
    console.error(error.stack);
    process.exit(1);
  }
}

// Safety warning
if (!CONFIRM_TRUNCATE) {
  console.log('⚠️  WARNING: CONFIRM_TRUNCATE is set to false');
  console.log('Only sync will be performed. No data will be deleted.\n');
}

if (FORCE_SYNC) {
  console.log('⚠️  WARNING: FORCE_SYNC is set to true');
  console.log('This will DROP and RECREATE the table!\n');
}

// Run the script
truncateAndSyncContext();