public function callback($req, $res)
{
if ($req->query('error_reason')) {
return $res->redirect('/');
}
// generate forceLogin redirect_uri
if ($req->query('forceLogin')) {
$this->app['config']->set('instagram.redirect_uri', $this->app['config']->get('instagram.redirect_uri') . '?forceLogin=t');
}
$instagram = $this->app['instagram'];
/* authenticate the user with the instagram API */
$authenticatedUser = false;
try {
if ($instagram->Users->Authorize($req->query('code'))) {
$authenticatedUser = $instagram->Users->getCurrentUser();
}
} catch (\Exception $e) {
$this->app['logger']->error($e);
}
if (!$authenticatedUser) {
$this->app['errors']->push(['context' => 'user.login', 'error' => 'invalid_token', 'message' => 'Instagram: Login error. Please try again.']);
$usersController = new \app\users\Controller($this->app);
return $usersController->loginForm($req, $res);
}
/* fetch the user's full profile */
try {
$user_profile = $instagram->Users->Info($authenticatedUser['id'])->data;
} catch (\Exception $e) {
$this->app['logger']->error($e);
return $res->setCode(500);
}
/* log the user in or kick off signup */
$currentUser = $this->app['user'];
$iid = $user_profile['id'];
// generate parameters to update profile
$profileUpdateArray = ['id' => $iid, 'access_token' => $instagram->getAccessToken()];
// instagram id matches existing user?
$user = User::findOne(['where' => ['instagram_id' => $iid]]);
if ($user) {
// check if we are dealing with a temporary user
if (!$user->isTemporary()) {
if ($user->id() != $currentUser->id()) {
if ($req->query('forceLogin') || !$currentUser->isLoggedIn()) {
// log the user in
$this->app['auth']->signInUser($user->id(), 'instagram');
} else {
// inform the user that the instagram account they are trying to
// connect belongs to someone else
return new View('switchingAccounts/instagram.tpl', ['title' => 'Switch accounts?', 'otherUser' => $user, 'otherProfile' => $user->instagramProfile()]);
}
}
$profile = new InstagramProfile($iid);
// create or update the profile
if ($profile->exists()) {
$profile->set($profileUpdateArray);
} else {
$profile = new InstagramProfile();
$profile->create($profileUpdateArray);
}
// refresh profile from API
$profile->refreshProfile($user_profile);
return $this->finalRedirect($req, $res);
} else {
// show finish signup screen
$req->setSession('iid', $iid);
return $res->redirect('/signup/finish');
}
}
if ($currentUser->isLoggedIn()) {
// add to current user's account
$currentUser->set('instagram_id', $iid);
} else {
// save this for later
$req->setSession('iid', $iid);
}
$profile = new InstagramProfile($iid);
// create or update the profile
if ($profile->exists()) {
$profile->set($profileUpdateArray);
} else {
// create profile
$profile = new InstagramProfile();
$profile->create($profileUpdateArray);
}
// refresh profile from API
$profile->refreshProfile($user_profile);
// get outta here
if ($currentUser->isLoggedIn()) {
$this->finalRedirect($req, $res);
} else {
$res->redirect('/signup/finish');
}
}
