feat: fix issues

backend/providers/wechat/wechat.go

@@ -174,6 +174,25 @@ func (a *AuthorizeAccessToken) GetUnionID() string {
 	return a.Unionid
 }
 
+type StableAccessToken struct {
+	AccessToken string `json:"access_token,omitempty"`
+	ExpiresIn   int64  `json:"expires_in,omitempty"`
+}
+
+func (we *Client) GetStableAccessToken() (*StableAccessToken, error) {
+	params := we.wrapParams(map[string]string{
+		"grant_type": "client_credential",
+	})
+
+	var data StableAccessToken
+	_, err := we.client.R().SetSuccessResult(&data).SetBodyJsonMarshal(params).Post("/cgi-bin/stable_token")
+	if err != nil {
+		return nil, errors.Wrap(err, "call /cgi-bin/stable_token failed")
+	}
+
+	return &data, nil
+}
+
 func (we *Client) AuthorizeCode2Token(code string) (*AuthorizeAccessToken, error) {
 	params := we.wrapParams(map[string]string{
 		"code":       code,