import configparser
from pathlib import Path
from fastapi import HTTPException

config_path = Path("backend/config.conf")

def _save_config(config):
    try:
        with open(config_path, 'w') as configfile:
            config.write(configfile)
    except Exception as e:
        raise HTTPException(500, f"配置保存失败: {str(e)}")

def get_price_config():
    config = configparser.ConfigParser()
    config.read(config_path)
    return {
        "points_rate": float(config.get("price", "points_rate")),
        "get_points_rate": float(config.get("price", "get_points_rate"))
    }

def get_night_config():
    config = configparser.ConfigParser()
    config.read(config_path)
    return {
        "start_time": config.get("stay_up_late", "start_time"),
        "end_time": config.get("stay_up_late", "end_time"),
        "price_minutes": int(config.get("stay_up_late", "price_minutes"))
    }

def update_points_rate(new_rate: float):
    config = configparser.ConfigParser()
    config.read(config_path)
    config.set("price", "points_rate", str(new_rate))
    _save_config(config)
    return {"message": "积分抵扣率更新成功"}

def update_get_points_rate(new_rate: float):
    config = configparser.ConfigParser()
    config.read(config_path)
    config.set("price", "get_points_rate", str(new_rate))
    _save_config(config)
    return {"message": "积分获取率更新成功"}

def update_night_start(new_time: str):
    # 添加时间格式验证
    try:
        from datetime import datetime
        datetime.strptime(new_time, "%H:%M:%S")
    except ValueError:
        raise HTTPException(400, "时间格式应为 HH:MM:SS")
    
    config = configparser.ConfigParser()
    config.read(config_path)
    config.set("stay_up_late", "start_time", new_time)
    _save_config(config)
    return {"message": "晚场开始时间更新成功"}

def update_night_end(new_time: str):
    # 同样添加时间验证
    try:
        from datetime import datetime
        datetime.strptime(new_time, "%H:%M:%S")
    except ValueError:
        raise HTTPException(400, "时间格式应为 HH:MM:SS")
    config = configparser.ConfigParser()
    config.read(config_path)
    config.set("stay_up_late", "end_time", new_time)
    _save_config(config)
    return {"message": "晚场结束时间更新成功"}

def update_price_minutes(minutes: int):
    if minutes <= 0:
        raise HTTPException(400, "分钟数必须大于0")
    
    config = configparser.ConfigParser()
    config.read(config_path)
    config.set("stay_up_late", "price_minutes", str(minutes))
    _save_config(config)
    return {"message": "计费分钟间隔更新成功"}