package cc.mrbird.febs.unisoftiot.config;

import cc.mrbird.febs.common.exception.FebsException;
import cc.mrbird.febs.unisoftiot.enums.HttpMethod;
import cc.mrbird.febs.unisoftiot.utils.UrlUtils;
import cn.hutool.json.JSONUtil;
import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import okhttp3.Request;

import java.util.LinkedHashMap;

/**
 * 请求处理器类，用于构建和发送API请求
 */
@Slf4j
public class RequestHandler {

    private String appId;
    private String appSecret;

    /**
     * 构造函数，初始化appId和appSecret
     *
     * @param appId     应用ID
     * @param appSecret 应用密钥
     */
    public RequestHandler(String appId,String appSecret){
        this.appId = appId;
        this.appSecret = appSecret;
    }

    /**
     * 发送API请求
     *
     * @param baseUrl       基础URL
     * @param urlPath       URL路径
     * @param parameters    请求参数
     * @param httpMethod    HTTP方法
     * @return 请求结果字符串
     * @throws FebsException 当HTTP方法不支持时抛出异常
     */
    private String sendApiRequest(String baseUrl,
                                  String urlPath,
                                  LinkedHashMap<String, Object> parametersw,
                                  HttpMethod httpMethod) {

        // 创建参数集合，用于设备控制
        LinkedHashMap<String, Object> parameters = new LinkedHashMap<>();
        // 添加控制设备的参数，这里的例子是开启设备的某个功能
        parameters.put("device", "1438");
        parameters.put("power3", "1");
        log.info("parameters",parameters.toString());
        String fullUrl = "";
        Request request;
        // 根据HTTP方法构建请求
        switch (httpMethod) {
            case POST:
                // 对于POST请求，将参数序列化为JSON体
                fullUrl = UrlUtils.getUrl(baseUrl,appId,appSecret,urlPath,null);
                String body = JSON.toJSONString(parameters);
                log.info("parametersJson:", JSONUtil.parseObj(parameters));
                log.info("body:",body);
                request = RequestBuilder.buildRequest(fullUrl, body,httpMethod);
                break;
            case GET:
                // 对于GET请求，将参数直接拼接到URL中
                fullUrl = UrlUtils.getUrl(baseUrl,appId,appSecret,urlPath,parameters);
                request = RequestBuilder.buildRequest(fullUrl, null,httpMethod);
                break;
            default:
                // 不支持的HTTP方法抛出异常
                throw new FebsException("[RequestHandler] HttpMethod 不支持: " + httpMethod);
        }

        // 记录请求信息
        log.info("{} {}", httpMethod, fullUrl);

        // 发送请求并处理响应
        return ResponseHandler.handleResponse(request);
    }

    /**
     * 发送签名请求，确保appId和appSecret不为空
     *
     * @param baseUrl       基础URL
     * @param urlPath       URL路径
     * @param parameters    请求参数
     * @param httpMethod    HTTP方法
     * @return 请求结果字符串
     * @throws FebsException 当appId或appSecret为空时抛出异常
     */
    public String sendSignedRequest(String baseUrl,
                                    String urlPath,
                                    LinkedHashMap<String, Object> parameters,
                                    HttpMethod httpMethod) {
        // 校验appId和appSecret
        if (null == appId || appId.isEmpty() || null == appSecret || appSecret.isEmpty()) {
            throw new FebsException("[RequestHandler] appId/appSecret 不能为空!");
        }
        // 调用sendApiRequest方法发送请求
        return sendApiRequest(baseUrl, urlPath, parameters, httpMethod);
    }

}