package wechatopen

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"go.dtapp.net/gorequest"
	"go.dtapp.net/gostorage"
	"net/http"
)

type WxaGetQrcodeResponse struct {
	Errcode int    `json:"errcode"`
	Errmsg  string `json:"errmsg"`
}

type WxaGetQrcodeResult struct {
	Result WxaGetQrcodeResponse // 结果
	Body   []byte               // 内容
	Http   gorequest.Response   // 请求
}

func newWxaGetQrcodeResult(result WxaGetQrcodeResponse, body []byte, http gorequest.Response) *WxaGetQrcodeResult {
	return &WxaGetQrcodeResult{Result: result, Body: body, Http: http}
}

// WxaGetQrcode 获取体验版二维码
// https://developers.weixin.qq.com/doc/oplatform/Third-party_Platforms/2.0/api/code/get_qrcode.html
func (c *Client) WxaGetQrcode(ctx context.Context, path string) (*WxaGetQrcodeResult, error) {
	// 检查
	err := c.checkComponentIsConfig()
	if err != nil {
		return nil, err
	}
	err = c.checkAuthorizerIsConfig()
	if err != nil {
		return nil, err
	}
	// 参数
	params := gorequest.NewParams()
	if path != "" {
		params["path"] = path // 指定二维码扫码后直接进入指定页面并可同时带上参数）
	}
	// 请求
	request, err := c.request(ctx, fmt.Sprintf(apiUrl+"/wxa/get_qrcode?access_token=%s", c.GetAuthorizerAccessToken(ctx)), params, http.MethodGet)
	if err != nil {
		return nil, err
	}
	// 定义
	var response WxaGetQrcodeResponse
	// 判断内容是否为图片
	if request.HeaderIsImg() {
	} else {
		err = json.Unmarshal(request.ResponseBody, &response)
		if err != nil {
			return nil, err
		}
	}
	return newWxaGetQrcodeResult(response, request.ResponseBody, request), nil
}

func (cr *WxaGetQrcodeResult) SaveImg(db *gostorage.AliYun, fileName, filePath string) error {
	if cr.Result.Errcode != 0 {
		panic(fmt.Sprintf("接口状态错误：%s", cr.Body))
	}
	// 上传
	_, err := db.PutObject(bytes.NewReader(cr.Body), filePath, fileName)
	if err != nil {
		return err
	}
	return nil
}