wechat/openid.go

package wechat

import (
	"errors"
	"fmt"
)

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

type MiniAppOpenidData struct {
	Openid     string      `json:"openid"`
	SessionKey interface{} `json:"session_key"`
	Unionid    interface{} `json:"unionid"`
	Errcode    int         `json:"errcode"`
	Errmsg     string      `json:"errmsg"`
}

type MpOpenIdData 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      int    `json:"errcode"`
	Errmsg       string `json:"errmsg"`
}

/**
 *  从微信api取openid
 */
func GetAppOpenid(appid, secret, code string) (AppOpenIdData, error) {

	var data AppOpenIdData

	url := fmt.Sprintf(GET_APP_OPENID, appid, secret, code)

	data_byte, err := SendHttp("GET", url, nil)
	if err != nil {
		return data, err
	}

	err = json.Unmarshal(data_byte, &data)

	return data, err
}

/**
 *  从微信api取小程序openid
 */
func GetMiniAppOpenid(appid, secret, code string) (MiniAppOpenidData, error) {

	url := fmt.Sprintf(GET_MINIAPP_OPENID_API, appid, secret, code)

	data_byte, err := SendHttp("GET", url, nil)

	var data MiniAppOpenidData

	if err != nil {
		return data, err
	}

	err = json.Unmarshal(data_byte, &data)

	return data, err
}

/**
 *  从微信api取公众号openid
 */
func GetMpOpenid(appid, secret, code string) (MpOpenIdData, error) {

	url := fmt.Sprintf(GET_MP_OPENID_API, appid, secret, code)

	data_byte, err := SendHttp("GET", url, nil)

	var data MpOpenIdData

	if err != nil {
		return data, err
	}

	err = json.Unmarshal(data_byte, &data)

	if data.Errcode != 0 {
		return data, errors.New(data.Errmsg)
	}

	return data, err
}