feat: update

backend/providers/wechat/response.go

@@ -11,6 +11,7 @@ func (r *ErrorResponse) Error() error {
 
 type AccessTokenResponse struct {
 	ErrorResponse
-	AccessToken string `json:"access_token,omitempty"`
-	ExpiresIn   int    `json:"expires_in,omitempty"` // seconds
+	AccessToken  string `json:"access_token,omitempty"`
+	RefreshToken string `json:"refresh_token,omitempty"`
+	ExpiresIn    int    `json:"expires_in,omitempty"` // seconds
 }

backend/providers/wechat/wechat.go

@@ -89,6 +89,26 @@ func (we *Client) wrapParams(params map[string]string) map[string]string {
 	return params
 }
 
+// RefreshAccessToken
+func (we *Client) RefreshAccessToken(refreshToken string) (*AccessTokenResponse, error) {
+	params := we.wrapParams(map[string]string{
+		"grant_type":    "refresh_token",
+		"refresh_token": refreshToken,
+	})
+
+	var data AccessTokenResponse
+	_, err := we.client.R().SetSuccessResult(&data).SetQueryParams(params).Get("/sns/oauth2/refresh_token")
+	if err != nil {
+		return nil, errors.Wrap(err, "call /sns/oauth2/refresh_token failed")
+	}
+
+	if data.ErrCode != 0 {
+		return nil, data.Error()
+	}
+
+	return &data, nil
+}
+
 func (we *Client) GetAccessToken() (*AccessTokenResponse, error) {
 	params := map[string]string{
 		"grant_type": "client_credential",