package client

import (
	"errors"
	"fmt"
	"net/http"

	"github.com/zeromicro/go-zero/core/logx"

	"chengdu-lenntc/third-platform-sdk/util"
)

// HttpRequest http请求参数
type HttpRequest struct {
	Headers   map[string]string // 请求header参数
	QueryArgs map[string]any    // 请求query参数
	BodyArgs  map[string]any    // 请求body参数
}

// HttpResponse http响应结果
type HttpResponse struct {
	Result     any          // 响应的body数据结构, 必须为指针类型
	RespHeader *http.Header // 响应header
}

// ThirdClient 第三方平台的client
type ThirdClient interface {
	// HttpGet GET请求
	HttpGet(url string, req *HttpRequest, resp *HttpResponse) error
	// HttpPost POST请求
	HttpPost(url string, req *HttpRequest, resp *HttpResponse) error
	// HttpPut PUT请求
	HttpPut(url string, req *HttpRequest, resp *HttpResponse) error
	// HttpDelete DELETE请求
	HttpDelete(url string, req *HttpRequest, resp *HttpResponse) error
	// DoHttp 发起http请求
	DoHttp(method string, url string, req *HttpRequest, resp *HttpResponse) error
}

type ThirdClientImpl struct {
	log logx.Logger
}

func NewThirdClient(log logx.Logger) *ThirdClientImpl {
	return &ThirdClientImpl{
		log: log,
	}
}

func (c *ThirdClientImpl) HttpGet(url string, req *HttpRequest, resp *HttpResponse) error {
	return c.DoHttp(http.MethodGet, url, req, resp)
}

func (c *ThirdClientImpl) HttpPost(url string, req *HttpRequest, resp *HttpResponse) error {
	return c.DoHttp(http.MethodPost, url, req, resp)
}

func (c *ThirdClientImpl) HttpPut(url string, req *HttpRequest, resp *HttpResponse) error {
	return c.DoHttp(http.MethodPut, url, req, resp)
}

func (c *ThirdClientImpl) HttpDelete(url string, req *HttpRequest, resp *HttpResponse) error {
	return c.DoHttp(http.MethodDelete, url, req, resp)
}

func (c *ThirdClientImpl) DoHttp(method string, url string, req *HttpRequest, resp *HttpResponse) error {
	// 发起请求
	reqConfig := &util.ReqConfig{
		Headers:   req.Headers,
		QueryArgs: req.QueryArgs,
		BodyArgs:  req.BodyArgs,
	}
	hc := util.NewHttpClient(c.log).NewRequest(method, url, reqConfig).Do()
	if hc.Error != nil {
		return hc.Error
	}
	var responseHeader *http.Header
	if hc.Response != nil {
		responseHeader = &hc.Response.Header
	}
	// 检查http响应错误
	if err := c.checkResponseError(hc.Response); err != nil {
		c.log.WithFields([]logx.LogField{{Key: "method", Value: method}, {Key: "url", Value: url}, {Key: "reqConfig", Value: reqConfig}}...).
			Errorf("[ThirdClientImpl][DoHttp] checkResponseError err:%s", err)
		return err
	}
	// 获取响应结果
	if resp == nil {
		return nil
	}
	result := resp.Result
	if err := hc.Result(result).Error; err != nil {
		return err
	}
	resp.Result = result
	resp.RespHeader = responseHeader
	return nil
}

// 检查http响应错误
func (c *ThirdClientImpl) checkResponseError(r *util.Response) error {
	if r.StatusCode >= 200 && r.StatusCode < 300 {
		return nil
	}
	return errors.New(fmt.Sprintf("http response error, status code: %d, status: %s", r.StatusCode, r.Status))
}