SendWithAuth

client.go

@@ -87,6 +87,15 @@ func (c *Client) Send(req *http.Request, v interface{}) error {
 	return nil
 }
 
+// SendWithAuth makes a request to the API and apply OAuth2 header automatically.
+// If the access token soon to be expired, it will try to get a new one before
+// making the main request
+func (c *Client) SendWithAuth(req *http.Request, v interface{}) error {
+	req.Header.Set("Authorization", "Bearer "+c.Token.Token)
+
+	return c.Send(req, v)
+}
+
 func (c *Client) log(request *http.Request, response *http.Response) {
 	if c.LogFile != "" {
 		os.OpenFile(c.LogFile, os.O_CREATE, 0755)

payment.go

@@ -22,7 +22,7 @@ func (c *Client) CreateDirectPaypalPayment(amount Amount, redirectURI string) (*
 	req.Header.Set("Authorization", "Bearer "+c.Token.Token)
 
 	p := PaymentResponse{}
-	err = c.Send(req, &p)
+	err = c.SendWithAuth(req, &p)
 
 	if p.ID == "" {
 		return &p, errors.New("Unable to create payment with this access token")
@@ -43,7 +43,7 @@ func (c *Client) ExecuteApprovedPayment(paymentID string, payerID string) (*Exec
 	req.Header.Set("Authorization", "Bearer "+c.Token.Token)
 
 	e := ExecuteResponse{}
-	err = c.Send(req, &e)
+	err = c.SendWithAuth(req, &e)
 
 	if e.ID == "" {
 		return &e, errors.New("Unable to execute payment with paymentID=" + paymentID)