import logging
import sys
from datetime import datetime, timedelta
import os

LOG_DIR = "./logs"  # 日志文件目录
LOG_RETENTION_DAYS = 7  # 日志保留天数


def _remove_old_logs(log_dir, retention_days):
    """删除超过保留天数的日志文件"""
    if not os.path.exists(log_dir):
        os.makedirs(log_dir)
    now = datetime.now()
    for filename in os.listdir(log_dir):
        file_path = os.path.join(log_dir, filename)
        if os.path.isfile(file_path) and filename.startswith("run_") and filename.endswith(".log"):
            # 提取文件日期
            try:
                log_date_str = filename[4:14]
                log_date = datetime.strptime(log_date_str, "%Y-%m-%d")
                if now - log_date > timedelta(days=retention_days):
                    os.remove(file_path)
                    print(f"删除旧日志: {filename}")
            except ValueError:
                continue


def _reset_logger(log):
    for handler in log.handlers:
        handler.close()
        log.removeHandler(handler)
        del handler
    log.handlers.clear()
    log.propagate = False
    console_handle = logging.StreamHandler(sys.stdout)
    console_handle.setFormatter(
        logging.Formatter(
            "[%(levelname)s][%(asctime)s][%(filename)s:%(lineno)d] - %(message)s",
            datefmt="%Y-%m-%d %H:%M:%S",
        )
    )
    
    # 获取当前日期并将其加入日志文件名
    date_str = datetime.now().strftime("%Y-%m-%d")
    log_file_path = os.path.join(LOG_DIR, f"run_{date_str}.log")
    
    # 日志文件句柄
    file_handle = logging.FileHandler(log_file_path, encoding="utf-8")
    file_handle.setFormatter(
        logging.Formatter(
            "[%(levelname)s][%(asctime)s][%(filename)s:%(lineno)d] - %(message)s",
            datefmt="%Y-%m-%d %H:%M:%S",
        )
    )
    log.addHandler(file_handle)
    log.addHandler(console_handle)

    # 清理旧日志
    _remove_old_logs(LOG_DIR, LOG_RETENTION_DAYS)


def _get_logger():
    log = logging.getLogger("log")
    _reset_logger(log)
    log.setLevel(logging.INFO)
    return log


# 日志句柄
logger = _get_logger()