#!/usr/bin/env python3
"""
考培练系统 - 数据库回滚工具使用示例
演示如何使用回滚工具进行常见的数据恢复操作
"""

import asyncio
import sys
from pathlib import Path

# 添加项目根目录到Python路径
project_root = Path(__file__).parent.parent
sys.path.insert(0, str(project_root))

from scripts.kaopeilian_rollback import KaopeilianRollbackTool

async def demo_rollback_tools():
    """演示回滚工具的使用"""
    
    print("🔧 考培练系统 - 数据库回滚工具演示")
    print("=" * 60)
    
    tool = KaopeilianRollbackTool()
    
    try:
        await tool.connect()
        
        print("\n1️⃣ 查看最近24小时的数据变更")
        print("-" * 40)
        await tool.list_recent_changes(24)
        
        print("\n2️⃣ 演示用户回滚（模拟）")
        print("-" * 40)
        print("命令示例：")
        print("python scripts/kaopeilian_rollback.py --rollback-user 123 --operation-type delete")
        print("python scripts/kaopeilian_rollback.py --rollback-user 123 --operation-type delete --execute")
        
        print("\n3️⃣ 演示课程回滚（模拟）")
        print("-" * 40)
        print("命令示例：")
        print("python scripts/kaopeilian_rollback.py --rollback-course 456 --operation-type delete")
        print("python scripts/kaopeilian_rollback.py --rollback-course 456 --operation-type delete --execute")
        
        print("\n4️⃣ 演示考试回滚（模拟）")
        print("-" * 40)
        print("命令示例：")
        print("python scripts/kaopeilian_rollback.py --rollback-exam 789")
        print("python scripts/kaopeilian_rollback.py --rollback-exam 789 --execute")
        
        print("\n5️⃣ 演示时间点回滚")
        print("-" * 40)
        print("命令示例：")
        print("python scripts/simple_rollback.py --time '2024-12-20 10:30:00'")
        print("python scripts/simple_rollback.py --time '2024-12-20 10:30:00' --execute")
        
        print("\n6️⃣ 查看Binlog文件")
        print("-" * 40)
        print("命令示例：")
        print("python scripts/simple_rollback.py --list")
        print("python scripts/binlog_rollback_tool.py --list-binlogs")
        
        print("\n📋 回滚工具总结")
        print("-" * 40)
        print("✅ 专用工具：kaopeilian_rollback.py - 业务场景回滚")
        print("✅ 简化工具：simple_rollback.py - 时间点回滚")
        print("✅ 完整工具：binlog_rollback_tool.py - 复杂Binlog回滚")
        print("✅ 配置优化：mysql-rollback.cnf - MySQL回滚优化")
        print("✅ 文档指南：database_rollback_guide.md - 完整操作指南")
        
        print("\n⚠️ 安全提醒")
        print("-" * 40)
        print("• 回滚操作不可逆，务必谨慎执行")
        print("• 生产环境回滚前必须在测试环境验证")
        print("• 重要操作需要多人确认")
        print("• 保留回滚操作日志和备份文件")
        
    except Exception as e:
        print(f"❌ 演示过程中出现错误: {e}")
    finally:
        await tool.close()

if __name__ == "__main__":
    asyncio.run(demo_rollback_tools())