import json
import logging.handlers
import os.path
import traceback
from datetime import datetime, timedelta
from typing import Dict, List, Tuple

import pandas as pd
from sqlalchemy import create_engine, text
from sqlalchemy.engine import Engine


# 日志配置函数化，避免全局副作用
def setup_logger():
    logger = logging.getLogger(__name__)
    logger.setLevel(logging.DEBUG)

    # 避免重复添加handler
    if logger.handlers:
        return logger

    log_path = "/home/caiji/project/logs/"
    os.makedirs(log_path, exist_ok=True)

    # 1. 创建并配置TimedRotatingFileHandler（所有级别的文件输出）
    all_log_handler = logging.handlers.TimedRotatingFileHandler(
        os.path.join(log_path, "info.log"), 'D', backupCount=90
    )

    # 2. 创建并配置ERROR级别的TimedRotatingFileHandler
    error_log_handler = logging.handlers.TimedRotatingFileHandler(
        os.path.join(log_path, "error.log"), 'D', backupCount=90
    )
    error_log_handler.setLevel(logging.ERROR)

    # 3. 创建并配置StreamHandler（控制台输出）
    console_handler = logging.StreamHandler()
    console_handler.setLevel(logging.INFO)

    # 定义日志格式
    fmt = logging.Formatter(
        "%(asctime)s - %(name)s - %(levelname)s - %(filename)s:%(lineno)d - %(message)s",
        "%Y-%m-%d %H:%M:%S"
    )

    # 设置各个handler的格式
    all_log_handler.setFormatter(fmt)
    error_log_handler.setFormatter(fmt)
    console_handler.setFormatter(fmt)

    # 添加handler
    logger.addHandler(all_log_handler)
    logger.addHandler(error_log_handler)
    logger.addHandler(console_handler)

    return logger


logger = setup_logger()


class DatabaseConnector:
    """数据库连接管理器"""

    _engines: Dict[str, Engine] = {}

    @classmethod
    def get_engine(cls, host='172.21.6.37', port=3306, user='envision', pwd='envision', db='envision') -> Engine:
        """获取或创建数据库引擎"""
        key = f"{host}:{port}:{user}:{db}"

        if key not in cls._engines:
            connection_string = f'mysql+pymysql://{user}:{pwd}@{host}:{port}/{db}'
            cls._engines[key] = create_engine(
                connection_string,
                pool_size=10,  # 增加连接池大小
                max_overflow=20,
                pool_pre_ping=True,  # 连接前ping检查
                pool_recycle=600,  # 1小时回收连接
                echo=False  # 生产环境设为False
            )
            logger.info(f"Created new engine for {key}")

        return cls._engines[key]


def generate_scada_sql() -> Dict[str, Dict[str, Dict[str, List[str]]]]:
    """生成SCADA数据查询结构"""
    try:
        # 一次性读取所有相关文件
        df_2404 = pd.read_excel("conf/2404_表数据.xlsx")
        df_2405 = pd.read_excel("conf/2405_表数据.xlsx")
        df_scada = pd.concat([df_2404, df_2405], ignore_index=True)

        # 使用groupby提高效率
        grouped = df_scada.groupby(['场站标准化编号', '风机号', '历史采样表名'])

        sql_data = {}
        for (wind_farm_code, wind_turbine_name, table), group in grouped:
            # 生成字段映射
            columns = [f' {row["历史采样域名"]} as {row["标准化英文"]}'
                       for _, row in group.iterrows()]

            wind_turbine_name = str(wind_turbine_name)

            # 更新数据结构
            if wind_farm_code not in sql_data:
                sql_data[wind_farm_code] = {}
            if wind_turbine_name not in sql_data[wind_farm_code]:
                sql_data[wind_farm_code][wind_turbine_name] = {}

            sql_data[wind_farm_code][wind_turbine_name][table] = columns

        logger.info(f"Generated SCADA SQL for {len(sql_data)} wind farms")
        return sql_data

    except Exception as e:
        logger.error(f"Error generating SCADA SQL: {e}")
        raise


def generate_warn_fault_sql() -> Dict[str, Dict[str, Dict[str, List[str]]]]:
    """生成告警故障数据查询结构"""
    try:
        df_2406 = pd.read_excel('conf/2406_表数据.xlsx')
        df_2406 = df_2406[df_2406['场站标准化编号'] != 'WOF35800080']

        # 使用groupby优化
        grouped = df_2406.groupby(['场站标准化编号', '风机号', '历史采样表名'])

        warn_fault_data = {}
        for (wind_farm_code, wind_turbine_name, table), group in grouped:
            # 生成字段列表
            columns = [f'{row["历史采样域名"]} as fault_code'
                       for _, row in group.iterrows()]

            wind_turbine_name = str(wind_turbine_name)

            if wind_farm_code not in warn_fault_data:
                warn_fault_data[wind_farm_code] = {}
            if wind_turbine_name not in warn_fault_data[wind_farm_code]:
                warn_fault_data[wind_farm_code][wind_turbine_name] = {}

            warn_fault_data[wind_farm_code][wind_turbine_name][table] = columns

        logger.info(f"Generated warning/fault SQL for {len(warn_fault_data)} wind farms")
        return warn_fault_data

    except Exception as e:
        logger.error(f"Error generating warn/fault SQL: {e}")
        raise


def merge_dataframes(dataframes: List[pd.DataFrame]) -> pd.DataFrame:
    """高效合并数据框"""
    if not dataframes:
        return pd.DataFrame()

    # 使用reduce进行合并
    result = dataframes[0]
    for df in dataframes[1:]:
        result = pd.merge(
            result,
            df,
            on=['wind_turbine_name', 'time_stamp'],
            how='inner'  # 根据需求选择合并方式
        )
    return result


def execute_query_batch(engine: Engine, queries: List[Tuple[str, Dict]]) -> List[pd.DataFrame]:
    """批量执行查询"""
    results = []

    with engine.connect() as conn:
        for sql, params in queries:
            try:
                df = pd.read_sql(
                    text(sql),
                    conn,
                    params=params
                )
                results.append(df)
            except Exception as e:
                logger.error(f"Query failed: {sql[:100]}... Error: {e}")
                # 返回空DataFrame避免中断
                results.append(pd.DataFrame())

    return results


def process_wind_turbine_batch(
        engine: Engine,
        wind_farm_code: str,
        wind_turbine_name: str,
        points_data: Dict[str, List[str]],
        begin_time: datetime,
        end_time: datetime,
        query_type: str
) -> bool:
    """处理单个风机的数据查询和保存"""
    try:
        begin_time_str = begin_time.strftime('%Y-%m-%d %H:%M:%S')
        end_time_str = end_time.strftime('%Y-%m-%d %H:%M:%S')

        # 批量构建查询
        queries = []
        for table, cols in points_data.items():
            if not cols:  # 跳过空列
                continue

            sql = f"""
            SELECT 
                :wind_turbine_name as wind_turbine_name,
                occur_time as time_stamp,
                {', '.join(cols)}
            FROM {table}
            WHERE occur_time >= :begin_time AND occur_time < :end_time
            """

            queries.append((sql, {
                'wind_turbine_name': wind_turbine_name,
                'begin_time': begin_time_str,
                'end_time': end_time_str
            }))

        # 批量执行查询
        dfs = execute_query_batch(engine, queries)

        # 合并数据
        merged_df = merge_dataframes(dfs)

        if merged_df.empty:
            logger.warning(f"No data found for {wind_farm_code}_{wind_turbine_name}")
            return False

        # 保存数据
        save_path = os.path.join("/home/caiji/data", query_type)
        os.makedirs(save_path, exist_ok=True)

        file_name = f"{wind_farm_code}_{wind_turbine_name}_{begin_time.strftime('%Y%m%d%H%M%S')}.csv"
        file_path = os.path.join(save_path, file_name)

        # 使用parquet格式，更快更节省空间
        merged_df.to_csv(file_path, index=False)

        logger.info(f"Saved {len(merged_df)} rows to {file_path}")
        return True

    except Exception as e:
        logger.error(f"Error processing {wind_farm_code}_{wind_turbine_name}: {e}")
        logger.error(traceback.format_exc(), exc_info=True)
        return False


def read_and_save_file_optimized(query_dict: Dict, query_type: str, begin_time: datetime, end_time: datetime):
    # 创建输出目录
    output_dir = os.path.join("/home/caiji/data", query_type)
    os.makedirs(output_dir, exist_ok=True)

    # 获取数据库引擎
    engine = DatabaseConnector.get_engine()

    success_count = 0
    failed_count = 0
    for wind_farm_code, wind_turbine_data in query_dict.items():
        for wind_turbine_name, points_data in wind_turbine_data.items():
            return_data = process_wind_turbine_batch(engine, wind_farm_code, wind_turbine_name,
                                                     points_data, begin_time, end_time, query_type)

            if return_data:
                success_count += 1
            else:
                failed_count += 1
    logger.info(f"Processing completed. Success: {success_count}, Failed: {failed_count}")


def main(begin_time: datetime, end_time: datetime):
    """主函数"""
    try:
        #     # 生成查询结构
        # scada_data = generate_scada_sql()
        # warn_fault_data = generate_warn_fault_sql()
        #
        # with open('conf/scada.json', 'w') as f:
        #     f.write(json.dumps(scada_data))
        #
        # with open('conf/warn_fault.json', 'w') as f:
        #     f.write(json.dumps(warn_fault_data))

        with open('conf/scada.json', 'r') as f:
            scada_data = json.load(f)

        with open('conf/warn_fault.json', 'r') as f:
            warn_fault_data = json.load(f)

        # 处理SCADA数据
        logger.info("Starting SCADA data processing")
        scada_results = read_and_save_file_optimized(
            scada_data,
            'scada',
            begin_time,
            end_time
        )

        logger.info(str(scada_results))
        logger.info("Finished SCADA data processing")

        # 处理告警故障数据
        logger.info("Starting warn/fault data processing")
        warn_results = read_and_save_file_optimized(
            warn_fault_data,
            'warn_fault',
            begin_time,
            end_time
        )

        logger.info(str(warn_results))
        logger.info("Finished warn/fault data processing")
        logger.info("All processing completed")

    except Exception as e:
        logger.error(traceback.format_exc(), exc_info=True)
        logger.error(f"Main process failed: {e}", exc_info=True)
        raise


def parse_time_args() -> Tuple[datetime, datetime]:
    import sys
    now = datetime.now()

    default_start = now.replace(hour=0, minute=0, second=0, microsecond=0) - timedelta(days=1)
    default_end = default_start + timedelta(days=1)
    logger.info(sys.argv)
    # 解析命令行参数
    if len(sys.argv) >= 3:
        try:
            # 假设传入的是时间字符串，例如："2024-01-01 12:00:00"
            start_time = datetime.strptime(sys.argv[1], "%Y-%m-%d %H:%M:%S")
            end_time = datetime.strptime(sys.argv[2], "%Y-%m-%d %H:%M:%S")
        except ValueError:
            logger.error("时间格式错误，请使用格式：YYYY-MM-DD HH:MM:SS")
            # 如果解析失败，使用默认值
            start_time = default_start
            end_time = default_end
    else:
        # 没有足够参数，使用默认值
        start_time = default_start
        end_time = default_end

    return start_time, end_time


if __name__ == '__main__':
    start_time, end_time = parse_time_args()
    print(start_time)
    logger.info(f'{start_time}___{end_time}')
    main(start_time, end_time)