/**
 * Script: Clear Teacher Cache
 * Xóa tất cả cache liên quan đến teachers
 */

require('dotenv').config();
const { redisClient } = require('../config/redis');

async function clearTeacherCache() {
  console.log('🧹 Clearing teacher cache...\n');
  
  try {
    // Redis client is already connected via config
    console.log('✅ Using existing Redis connection\n');
    
    // Delete all teacher-related cache patterns
    const patterns = [
      'teachers:list:*',
      'teacher:*',
    ];
    
    let totalDeleted = 0;
    
    for (const pattern of patterns) {
      console.log(`Searching for: ${pattern}`);
      const keys = await redisClient.keys(pattern);
      
      if (keys.length > 0) {
        console.log(`  Found ${keys.length} keys`);
        await redisClient.del(...keys);
        totalDeleted += keys.length;
        console.log(`  ✅ Deleted ${keys.length} keys\n`);
      } else {
        console.log(`  No keys found\n`);
      }
    }
    
    console.log('='.repeat(60));
    console.log(`✅ Cache cleared! Total deleted: ${totalDeleted} keys`);
    console.log('='.repeat(60));
    
    process.exit(0);
    
  } catch (error) {
    console.error('❌ Error:', error.message);
    process.exit(1);
  }
}

clearTeacherCache();