package Scheme

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"hospital-open-api/extend/weChat"
	"hospital-open-api/global"
	"strings"
	"time"
)

// GetSchemeJumpWxaRequest 跳转到的目标小程序信息
type GetSchemeJumpWxaRequest struct {
	Path  string `json:"path"`
	Query string `json:"query"`
	// envVersion 要打开的小程序版本。正式版为 "release"，体验版为 "trial"，开发版为 "develop"
	EnvVersion string `json:"env_version"`
}

// GetSchemeRequest 请求参数
// https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/url-scheme/urlscheme.generate.html#请求参数
type GetSchemeRequest struct {
	JumpWxa        *GetSchemeJumpWxaRequest `json:"jump_wxa"`
	ExpireType     int                      `json:"expire_type"`
	ExpireTime     int64                    `json:"expire_time"`
	ExpireInterval int                      `json:"expire_interval"`
}

// GetSchemeResponse 获取加密scheme码返回数据
type GetSchemeResponse struct {
	OpenLink string `json:"openlink"`

	weChat.CommonError
}

// GetScheme 获取加密scheme码
func (r *GetSchemeRequest) GetScheme(userType int) (string, error) {
	// 初始化配置
	weChatConfig := weChat.GetConfig(userType)

	// 获取token
	accessToken, err := weChatConfig.GetAccessToken()
	if err != nil {
		return "", err
	}

	url := fmt.Sprintf("%s?access_token=%s", "https://api.weixin.qq.com/wxa/generatescheme", accessToken)

	// 将请求数据转换为 JSON
	requestBody, err := json.Marshal(r)
	if err != nil {
		return "", err
	}

	// 去除json的转义
	requestBody = []byte(strings.Replace(string(requestBody), "\\u0026", "&", -1))

	body, err := weChat.PostRequest(url, requestBody)
	if err != nil {
		return "", errors.New(err.Error())
	}

	var GetSchemeResponse GetSchemeResponse
	err = json.Unmarshal(body, &GetSchemeResponse)
	if err != nil {
		// json解析失败
		return "", err
	}

	if GetSchemeResponse.ErrCode != 0 || GetSchemeResponse.ErrMsg != "ok" {
		return "", errors.New(GetSchemeResponse.ErrMsg)
	}

	if GetSchemeResponse.OpenLink == "" {
		return "", errors.New("失败")
	}

	// 加入缓存
	redisKey := "c:official_account.scheme." + r.JumpWxa.Path + "." + r.JumpWxa.Query
	global.Redis.Set(context.Background(), redisKey, GetSchemeResponse.OpenLink, 60*60*24*10*time.Second)

	return GetSchemeResponse.OpenLink, nil
}