workaround verification_url

Author: hickford

deviceauth.go

@@ -57,7 +57,8 @@ func (d DeviceAuthResponse) MarshalJSON() ([]byte, error) {
 func (c *DeviceAuthResponse) UnmarshalJSON(data []byte) error {
 	type Alias DeviceAuthResponse
 	aux := &struct {
-		ExpiresIn int64 `json:"expires_in"`
+		ExpiresIn       int64  `json:"expires_in"`
+		VerificationURL string `json:"verification_url"`
 		*Alias
 	}{
 		Alias: (*Alias)(c),
@@ -68,6 +69,10 @@ func (c *DeviceAuthResponse) UnmarshalJSON(data []byte) error {
 	if aux.ExpiresIn != 0 {
 		c.Expiry = time.Now().UTC().Add(time.Second * time.Duration(aux.ExpiresIn))
 	}
+	// some services return verification_url instead of verification_uri
+	if c.VerificationURI == "" && aux.VerificationURL != "" {
+		c.VerificationURI = aux.VerificationURL
+	}
 	return nil
 }