#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
用户数据库命令行接口
用于Go后端调用执行用户操作
"""

import sys
import json
from user_database import UserDatabase

def main():
    if len(sys.argv) < 2:
        print(json.dumps({"error": "缺少命令参数"}))
        sys.exit(1)
    
    command = sys.argv[1]
    db = UserDatabase()
    
    try:
        if command == "create":
            # 创建用户: python user_cli.py create <username> <password> <email>
            if len(sys.argv) < 5:
                print(json.dumps({"error": "参数不足: 需要用户名、密码和邮箱"}))
                sys.exit(1)
            
            username = sys.argv[2]
            password = sys.argv[3]
            email = sys.argv[4]
            
            user_id = db.create_user(username, password, email)
            print(json.dumps({
                "success": True,
                "user_id": user_id,
                "username": username
            }))
            
        elif command == "verify":
            # 验证密码: python user_cli.py verify <username> <password>
            if len(sys.argv) < 4:
                print(json.dumps({"error": "参数不足: 需要用户名和密码"}))
                sys.exit(1)
            
            username = sys.argv[2]
            password = sys.argv[3]
            
            user = db.verify_password(username, password)
            if user:
                # 删除密码哈希
                user_data = {k: v for k, v in user.items() if k != 'password_hash'}
                # 转换datetime为字符串
                if 'created_at' in user_data and user_data['created_at']:
                    user_data['created_at'] = str(user_data['created_at'])
                if 'last_login_at' in user_data and user_data['last_login_at']:
                    user_data['last_login_at'] = str(user_data['last_login_at'])
                
                # 更新登录时间
                db.update_login_time(user['user_id'])
                
                print(json.dumps({
                    "success": True,
                    **user_data
                }))
            else:
                print(json.dumps({"error": "用户名或密码错误"}))
                sys.exit(1)
                
        elif command == "get":
            # 获取用户信息: python user_cli.py get <user_id>
            if len(sys.argv) < 3:
                print(json.dumps({"error": "参数不足: 需要用户ID"}))
                sys.exit(1)
            
            user_id = int(sys.argv[2])
            user = db.get_user_by_id(user_id)
            
            if user:
                # 删除密码哈希
                user_data = {k: v for k, v in user.items() if k != 'password_hash'}
                # 转换datetime为字符串
                if 'created_at' in user_data and user_data['created_at']:
                    user_data['created_at'] = str(user_data['created_at'])
                if 'last_login_at' in user_data and user_data['last_login_at']:
                    user_data['last_login_at'] = str(user_data['last_login_at'])
                
                print(json.dumps(user_data))
            else:
                print(json.dumps({"error": "用户不存在"}))
                sys.exit(1)
                
        elif command == "update":
            # 更新用户信息: python user_cli.py update <user_id> [--email <email>] [--bio <bio>]
            if len(sys.argv) < 3:
                print(json.dumps({"error": "参数不足: 需要用户ID"}))
                sys.exit(1)
            
            user_id = int(sys.argv[2])
            kwargs = {}
            
            # 解析命令行参数
            i = 3
            while i < len(sys.argv):
                if sys.argv[i] == "--email" and i + 1 < len(sys.argv):
                    kwargs['email'] = sys.argv[i + 1]
                    i += 2
                elif sys.argv[i] == "--bio" and i + 1 < len(sys.argv):
                    kwargs['bio'] = sys.argv[i + 1]
                    i += 2
                elif sys.argv[i] == "--password" and i + 1 < len(sys.argv):
                    kwargs['password'] = sys.argv[i + 1]
                    i += 2
                else:
                    i += 1
            
            if not kwargs:
                print(json.dumps({"error": "没有提供需要更新的字段"}))
                sys.exit(1)
            
            success = db.update_user(user_id, **kwargs)
            
            if success:
                print(json.dumps({"success": True, "message": "更新成功"}))
            else:
                print(json.dumps({"error": "更新失败"}))
                sys.exit(1)
                
        else:
            print(json.dumps({"error": f"未知命令: {command}"}))
            sys.exit(1)
            
    except db.UserExistsError as e:
        print(json.dumps({"error": str(e), "type": "UserExistsError"}))
        sys.exit(1)
    except db.ValidationError as e:
        print(json.dumps({"error": str(e), "type": "ValidationError"}))
        sys.exit(1)
    except db.UserNotFoundError as e:
        print(json.dumps({"error": str(e), "type": "UserNotFoundError"}))
        sys.exit(1)
    except Exception as e:
        print(json.dumps({"error": str(e), "type": "Exception"}))
        sys.exit(1)

if __name__ == "__main__":
    main()