hongze_api/services/wechat.go

package services

import (
	"encoding/json"
	"errors"
	"fmt"
	"hongze/hongze_api/models"
	"hongze/hongze_api/utils"
	"rdluck_tools/http"
	"strconv"
	"strings"
	"time"
)

type WxAccessToken struct {
	AccessToken  string `json:"access_token"`
	ExpiresIn    int    `json:"expires_in"`
	RefreshToken string `json:"refresh_token"`
	Openid       string `json:"openid"`
	Scope        string `json:"scope"`
	Errcode      string `json:"errcode"`
	Errmsg       string `json:"errmsg"`
}

func WxGetUserOpenIdByCode(code string) (item *WxAccessToken, err error) {
	if code == "" {
		err = errors.New("code is empty")
		return nil, err
	}
	requestUrl := `https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code`
	requestUrl = fmt.Sprintf(requestUrl, utils.WxAppId, utils.WxAppSecret, code)
	fmt.Println("requestUrl:", requestUrl)
	result, err := http.Get(requestUrl)
	if err != nil {
		return nil, err
	}
	err = json.Unmarshal(result, &item)
	return
}

type WxToken struct {
	AccessToken string `json:"access_token"`
	ExpiresIn   int    `json:"expires_in"`
	Errcode     int    `json:"errcode"`
	Errmsg      string `json:"errmsg"`
}

func WxGetToken() (item *WxToken, err error) {
	requestUrl := `https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s`
	requestUrl = fmt.Sprintf(requestUrl, utils.WxAppId, utils.WxAppSecret)
	fmt.Println("requestUrl:", requestUrl)
	result, err := http.Get(requestUrl)
	if err != nil {
		return nil, err
	}
	err = json.Unmarshal(result, &item)
	fmt.Println("WxGetToken start")
	fmt.Println(string(result))
	fmt.Println("WxGetToken end")
	return
}

func WxGetAccessToken() (accessToken string, err error) {
	wxToken, err := models.GetWxToken()
	if err != nil && err.Error() != utils.ErrNoRow() {
		return
	}
	//wx_token 不存在
	if wxToken == nil || (err != nil && err.Error() == utils.ErrNoRow()) {
		token, err := WxGetToken()
		if err != nil {
			return accessToken, err
		}
		if token.Errmsg != "" {
			err = errors.New("获取access_token 失败 errcode:" + token.Errmsg + " ;errmsg:" + token.Errmsg)
			return "", err
		}
		expiresIn := time.Now().Add(110 * time.Minute).Unix()
		err = models.AddWxToken(token.AccessToken, expiresIn)
		if err != nil {
			err = errors.New("新增wx_token失败" + err.Error())
			return accessToken, err
		}
		accessToken = token.AccessToken
	} else {
		if wxToken.ExpiresIn <= time.Now().Unix() {
			token, err := WxGetToken()
			if err != nil {
				return accessToken, err
			}
			if token.Errmsg != "" {
				err = errors.New("获取access_token 失败 errcode:" + token.Errmsg + " ;errmsg:" + token.Errmsg)
				return "", err
			}
			expiresIn := time.Now().Add(110 * time.Minute).Unix()
			err = models.UpdateWxToken(token.AccessToken, expiresIn, wxToken.Id)
			if err != nil {
				err = errors.New("修改wx_token失败" + err.Error())
				return accessToken, err
			}
			accessToken = token.AccessToken
		} else {
			accessToken = wxToken.AccessToken
		}
	}
	return
}

type WxUserInfo struct {
	Openid         string `json:"openid"`
	Nickname       string `json:"nickname"`
	Sex            int    `json:"sex"`
	Language       string `json:"language"`
	City           string `json:"city"`
	Province       string `json:"province"`
	Country        string `json:"country"`
	Headimgurl     string `json:"headimgurl"`
	SubscribeTime  int    `json:"subscribe_time"`
	Unionid        string `json:"unionid"`
	Remark         string `json:"remark"`
	Groupid        int    `json:"groupid"`
	SubscribeScene string `json:"subscribe_scene"`
	Errcode        string `json:"errcode"`
	Errmsg         string `json:"errmsg"`
}

func WxGetUserInfo(openId, accessToken string) (item *WxUserInfo, err error) {
	requestUrl := `https://api.weixin.qq.com/cgi-bin/user/info?access_token=%s&openid=%s`
	requestUrl = fmt.Sprintf(requestUrl, utils.WxAppId, utils.WxAppSecret)
	result, err := http.Get(requestUrl)
	if err != nil {
		return
	}
	err = json.Unmarshal(result, &item)
	return
}

func GetWxTicket(accessToken string) (string, error) {
	Url := strings.Join([]string{"https://api.weixin.qq.com/cgi-bin/ticket/getticket",
		"?access_token=", accessToken,
		"&type=jsapi"}, "")
	infoBody, err := http.Get(Url)
	if err != nil {
		return "", err
	}
	atr := models.WxTicket{}
	err = json.Unmarshal(infoBody, &atr)
	fmt.Println("ticket result:", string(infoBody))
	if err != nil {
		return atr.Errmsg, err
	} else {
		return atr.Ticket, nil
	}
}

func GetWxSignature(ticket, url, noncestr string) (string, string, int64) {
	timestamp := time.Now().Unix()
	signStr := strings.Join([]string{"jsapi_ticket=", ticket,
		"&noncestr=", noncestr,
		"&timestamp=", strconv.FormatInt(timestamp, 10), "&url=", url}, "")
	signature := utils.Sha1(signStr)
	fmt.Println("signStr", signStr)
	return signature, noncestr, timestamp
}