Get user full name from Apple Sign-In

Author: Erol

providers/apple/apple.go

@@ -121,13 +121,12 @@ func (Provider) UnmarshalSession(data string) (goth.Session, error) {
 	return s, err
 }
 
-// Apple doesn't seem to provide a user profile endpoint like all the other providers do.
-// Therefore this will return a User with the unique identifier obtained through authorization
-// as the only identifying attribute.
 // A full name and email can be obtained from the form post response (parameter 'user')
 // to the redirect page following authentication, if the name and email scopes are requested.
 // Additionally, if the response type is form_post and the email scope is requested, the email
 // will be encoded into the ID token in the email claim.
+// Note that the full name is only provided on the very first authentication of a user, and
+// subsequent authentications will not include the full name, even if requested.
 func (p Provider) FetchUser(session goth.Session) (goth.User, error) {
 	s := session.(*Session)
 	if s.AccessToken == "" {

providers/apple/session.go

@@ -122,6 +122,7 @@ func (s *Session) Authorize(provider goth.Provider, params goth.Params) (string,
 			EmailVerified:  idToken.Claims.(*IDTokenClaims).EmailVerified.Value(),
 		}
 
+		// fetch the user first and last name from the params if available.
 		if user := params.Get("user"); user != "" {
 			var userData struct {
 				Name struct {