#!/usr/bin/env python
"""
启动应用前检查Redis连接

如果Redis不可用，会给出相应的提示和解决方案
"""
import os
import sys
import subprocess

# 添加项目根目录到路径
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

def check_redis():
    """检查Redis是否可用"""
    try:
        import redis
        
        # 测试连接
        broker_url = os.environ.get('CELERY_BROKER_URL', 'redis://localhost:6379/0')
        r = redis.from_url(broker_url)
        r.ping()
        return True
    except:
        return False

def show_redis_help():
    """显示Redis安装和启动帮助"""
    print("\n" + "="*60)
    print("🔧 Redis 设置指南")
    print("="*60)
    
    print("\n📋 快速解决方案:")
    
    print("\n1️⃣  Windows用户 - 使用Chocolatey安装Redis:")
    print("   choco install redis-64")
    print("   redis-server --service-install")
    print("   redis-server --service-start")
    
    print("\n2️⃣  使用Docker运行Redis:")
    print("   docker run -d --name redis -p 6379:6379 redis:alpine")
    
    print("\n3️⃣  Linux/macOS用户:")
    print("   # Ubuntu/Debian")
    print("   sudo apt-get install redis-server")
    print("   sudo systemctl start redis-server")
    print("   ")
    print("   # macOS (Homebrew)")
    print("   brew install redis")
    print("   brew services start redis")
    
    print("\n4️⃣  手动下载Redis (Windows):")
    print("   下载: https://github.com/microsoftarchive/redis/releases")
    print("   解压后运行: redis-server.exe")
    
    print("\n✅ 验证Redis运行:")
    print("   redis-cli ping")
    print("   (应该返回: PONG)")
    
    print("\n🔄 重新测试连接:")
    print("   python test_redis.py")
    
    print("\n📖 详细说明:")
    print("   查看 REDIS_SETUP.md 文件")
    
    print("="*60)

def start_app():
    """启动Flask应用"""
    print("\n🚀 启动Flask应用...")
    
    try:
        # 启动Flask应用
        from app import create_app
        app = create_app()
        
        print("✅ Flask应用启动成功!")
        print("📍 访问地址: http://localhost:5000")
        print("🔄 任务队列: Mock模式 (Redis不可用时自动启用)")
        print("\n按 Ctrl+C 停止应用")
        
        app.run(host='0.0.0.0', port=5000, debug=True)
        
    except KeyboardInterrupt:
        print("\n👋 应用已停止")
    except Exception as e:
        print(f"\n❌ 应用启动失败: {e}")

def main():
    """主函数"""
    print("🔍 检查Redis连接...")
    
    if check_redis():
        print("✅ Redis连接正常")
        print("🎯 建议启动Celery Worker以获得最佳性能:")
        print("   celery -A app.celery_app worker --loglevel=info")
        print("   (在新的终端窗口中运行)")
        
        start_app()
    else:
        print("⚠️  Redis连接失败")
        print("🔄 应用将使用Mock模式运行 (功能受限)")
        
        response = input("\n是否查看Redis安装指南? (y/n): ").lower().strip()
        if response in ['y', 'yes', '是']:
            show_redis_help()
            
            response = input("\n是否继续启动应用? (y/n): ").lower().strip()
            if response in ['y', 'yes', '是']:
                start_app()
            else:
                print("👋 已取消启动")
        else:
            start_app()

if __name__ == '__main__':
    main()