import requests
import json


def load_config(config_path="stattioncfg.json"):
    """
    从JSON配置文件加载配置信息
    :param config_path: 配置文件路径（默认当前目录config.json）
    :return: 配置字典（成功时），None（失败时）
    """
    try:
        with open(config_path, "r", encoding="utf-8") as f:
            config = json.load(f)

        # 验证必要字段
        if "station_name" not in config:
            print("配置错误：缺少 station_name 字段")
            return None

        return config

    except FileNotFoundError:
        print(f"配置文件 {config_path} 未找到")
        return None
    except json.JSONDecodeError:
        print("配置文件解析失败，请检查JSON格式")
        return None


def get_camera_rtsp_config(station_name):
    """
    获取指定变电站的摄像头RTSP配置信息
    :param station_name: 变电站名称（字符串）
    :return: 包含摄像头配置的列表（成功时），None（失败时）
    """
    # 接口地址
    url = "http://192.168.110.229:38091/api/services/isas/VideoElectronicFence/GetVideoCameraRTSPConfigure"

    # 请求参数
    params = {
        "stationName": station_name
    }

    try:
        # 发送GET请求
        response = requests.get(url, params=params, timeout=10)

        if response.status_code != 200:
            print(f"请求失败，HTTP状态码：{response.status_code}")
            return None

        json_data = response.json()

        if not json_data.get("success", False):
            print(f"接口返回错误：{json_data.get('result', {}).get('message', '未知错误')}")
            return None

        result = json_data.get("result", {})
        if not (result.get("flag", False) and "resultData" in result):
            print("未找到有效的摄像头配置数据")
            return None

        # 提取并处理摄像头配置
        cameras = result["resultData"]

        for cam in cameras:
            # 转换ROI格式
            roi = cam.get('roi', '0,0,0,0')
            if isinstance(roi, str):
                cam['roi'] = tuple(map(int, roi.split(',')))
            elif isinstance(roi, list):
                cam['roi'] = tuple(map(int, roi))
            else:
                cam['roi'] = (0, 0, 0, 0)

            # 补全RTSP参数
            # rtsp_url = cam['url']
            # if 'transportmode' not in rtsp_url:
            #     connector = '&' if '?' in rtsp_url else '?'
            #     cam['url'] = f"{rtsp_url}{connector}"

        print(f"成功获取 {result['totalCount']} 个摄像头配置")
        return cameras

    except requests.exceptions.RequestException as e:
        print(f"请求发生异常：{str(e)}")
        return None
    except ValueError:
        print("响应解析失败，无效的JSON格式")
        return None


# 更新后的使用示例
if __name__ == "__main__":
    # 从配置文件加载设置
    config = load_config()
    if not config:
        exit(1)

    station = config["station_name"]
    print(f"正在查询变电站：{station}")

    cameras = get_camera_rtsp_config(station)

    if cameras:
        print("\n摄像头列表：")
        for idx, camera in enumerate(cameras, 1):
            print(f"\n摄像头 {idx}:")
            print(f"名称：{camera['name']}")
            print(f"ID：{camera['id']}")
            print(f"RTSP地址：{camera['url']}")
            print(f"ROI区域：{camera['roi']}")