# sync/base_sync.py
from abc import ABC, abstractmethod
from loguru import logger
from typing import List, Dict, Any, Set, Optional
import json
import re
import time

from utils.redis_client import RedisClient
from utils.database_manager import DatabaseManager
from config.settings import COMPUTER_NAMES, COMPUTER_NAME_PATTERN

class BaseSync(ABC):
    """同步基类"""
    
    def __init__(self):
        self.redis_client = RedisClient()
        self.db_manager = DatabaseManager()
        self.sync_stats = {
            'total_accounts': 0,
            'success_count': 0,
            'error_count': 0,
            'last_sync_time': 0,
            'avg_sync_time': 0
        }
    

    @abstractmethod
    async def sync(self):
        """执行同步（兼容旧接口）"""
        pass
    
    @abstractmethod
    async def sync_batch(self, accounts: Dict[str, Dict]):
        """批量同步数据"""
        pass
    

    def _escape_sql_value(self, value: Any) -> str:
        """转义SQL值"""
        if value is None:
            return 'NULL'
        if isinstance(value, bool):
            return '1' if value else '0'
        if isinstance(value, (int, float)):
            return str(value)
        if isinstance(value, str):
            # 转义单引号
            escaped = value.replace("'", "''")
            return f"'{escaped}'"
        # 其他类型转换为字符串
        escaped = str(value).replace("'", "''")
        return f"'{escaped}'"
    
    def _build_sql_values_list(self, data_list: List[Dict], fields_mapping: Dict[str, str] = None) -> List[str]:
        """构建SQL VALUES列表"""
        values_list = []
        
        for data in data_list:
            try:
                value_parts = []
                for field, value in data.items():
                    # 应用字段映射
                    if fields_mapping and field in fields_mapping:
                        db_field = fields_mapping[field]
                    else:
                        db_field = field
                    
                    escaped_value = self._escape_sql_value(value)
                    value_parts.append(escaped_value)
                
                values_str = ", ".join(value_parts)
                values_list.append(f"({values_str})")
                
            except Exception as e:
                logger.error(f"构建SQL值失败: {data}, error={e}")
                continue
        
        return values_list
    
    def _get_recent_dates(self, days: int) -> List[str]:
        """获取最近N天的日期列表"""
        from datetime import datetime, timedelta
        
        dates = []
        today = datetime.now()
        
        for i in range(days):
            date = today - timedelta(days=i)
            dates.append(date.strftime('%Y-%m-%d'))
        
        return dates
    
    def _date_to_timestamp(self, date_str: str) -> int:
        """将日期字符串转换为时间戳（当天0点）"""
        from datetime import datetime
        
        try:
            dt = datetime.strptime(date_str, '%Y-%m-%d')
            return int(dt.timestamp())
        except ValueError:
            return 0
    
    def update_stats(self, success: bool = True, sync_time: float = 0):
        """更新统计信息"""
        if success:
            self.sync_stats['success_count'] += 1
        else:
            self.sync_stats['error_count'] += 1
        
        if sync_time > 0:
            self.sync_stats['last_sync_time'] = sync_time
            # 计算平均时间（滑动平均）
            if self.sync_stats['avg_sync_time'] == 0:
                self.sync_stats['avg_sync_time'] = sync_time
            else:
                self.sync_stats['avg_sync_time'] = (
                    self.sync_stats['avg_sync_time'] * 0.9 + sync_time * 0.1
                )
    
    def print_stats(self, sync_type: str = ""):
        """打印统计信息"""
        stats = self.sync_stats
        prefix = f"[{sync_type}] " if sync_type else ""
        
        stats_str = (
            f"{prefix}统计: 账号数={stats['total_accounts']}, "
            f"成功={stats['success_count']}, 失败={stats['error_count']}, "
            f"本次耗时={stats['last_sync_time']:.2f}s, "
            f"平均耗时={stats['avg_sync_time']:.2f}s"
        )
        
        if stats['error_count'] > 0:
            logger.warning(stats_str)
        else:
            logger.info(stats_str)
    
    def reset_stats(self):
        """重置统计信息"""
        self.sync_stats = {
            'total_accounts': 0,
            'success_count': 0,
            'error_count': 0,
            'last_sync_time': 0,
            'avg_sync_time': 0
        }