#!/usr/bin/env node

/**
 * Database Connection Test Script
 * 
 * This script tests the database connections to help troubleshoot setup issues.
 */

require('dotenv').config();

const { PrismaClient } = require('@prisma/client');
const mongoose = require('mongoose');

async function testPostgreSQL() {
  console.log('🐘 Testing PostgreSQL connection...');
  
  const prisma = new PrismaClient();
  
  try {
    await prisma.$connect();
    console.log('✅ PostgreSQL connection successful!');
    
    // Test a simple query
    const result = await prisma.$queryRaw`SELECT version()`;
    console.log('📊 PostgreSQL version:', result[0]?.version || 'Unknown');
    
    return true;
  } catch (error) {
    console.log('❌ PostgreSQL connection failed:', error.message);
    console.log('💡 Check your DATABASE_URL in .env file');
    return false;
  } finally {
    await prisma.$disconnect();
  }
}

async function testMongoDB() {
  console.log('\n🍃 Testing MongoDB connection...');
  
  try {
    await mongoose.connect(process.env.MONGODB_URI, {
      useNewUrlParser: true,
      useUnifiedTopology: true,
    });
    
    console.log('✅ MongoDB connection successful!');
    
    // Test a simple operation
    const adminDb = mongoose.connection.db.admin();
    const buildInfo = await adminDb.buildInfo();
    console.log('📊 MongoDB version:', buildInfo.version);
    
    return true;
  } catch (error) {
    console.log('❌ MongoDB connection failed:', error.message);
    console.log('💡 Check your MONGODB_URI in .env file');
    console.log('💡 Make sure MongoDB is running on port 27017');
    return false;
  } finally {
    await mongoose.connection.close();
  }
}

async function testRedis() {
  console.log('\n🔴 Testing Redis connection...');
  
  try {
    const Redis = require('ioredis');
    const redis = new Redis(process.env.REDIS_URL);
    
    await redis.ping();
    console.log('✅ Redis connection successful!');
    
    const info = await redis.info('server');
    const version = info.match(/redis_version:([^\r\n]+)/);
    if (version) {
      console.log('📊 Redis version:', version[1]);
    }
    
    redis.disconnect();
    return true;
  } catch (error) {
    console.log('❌ Redis connection failed:', error.message);
    console.log('💡 Check your REDIS_URL in .env file');
    console.log('💡 Make sure Redis is running on port 6379');
    console.log('💡 You can comment out REDIS_URL if you don\'t need Redis');
    return false;
  }
}

async function main() {
  console.log('🔍 Testing database connections...\n');
  
  const results = {
    postgresql: await testPostgreSQL(),
    mongodb: await testMongoDB(),
    redis: await testRedis(),
  };
  
  console.log('\n📋 Connection Summary:');
  console.log(`PostgreSQL: ${results.postgresql ? '✅ Connected' : '❌ Failed'}`);
  console.log(`MongoDB: ${results.mongodb ? '✅ Connected' : '❌ Failed'}`);
  console.log(`Redis: ${results.redis ? '✅ Connected' : '❌ Failed'}`);
  
  if (results.postgresql && results.mongodb) {
    console.log('\n🎉 Core databases are connected! You can now run:');
    console.log('   npm run db:push    # Create database schema');
    console.log('   npm run db:seed    # Seed with sample data');
    console.log('   npm run dev        # Start development server');
  } else {
    console.log('\n⚠️ Some databases failed to connect. Please check your configuration.');
  }
  
  if (!results.redis) {
    console.log('\n💡 Redis is optional. The app will work without it, but caching and background jobs won\'t be available.');
  }
}

main().catch(console.error);