Added check acct correct and exists on database (still TODO)

src/action/oauth/mastodon.php

@@ -32,6 +32,20 @@ $auth    = json_decode(file_get_contents('/src/mock-auth.mock'));
 $output = mastodon_get($payload->instance,
 	'/api/v1/accounts/verify_credentials', $auth->access_token);
 
+if (!preg_match('/^[a-zA-Z0-9_]+$/', $output->acct))
+	hres(500, 'Server returned incorrect user data, please contact the administrators');
+
+# check user exists by acct
+$acct = '@'.$output->acct.'@'.preg_replace('/^https:\/\//', '', $payload->instance);
+$sm = $db->prepare('SELECT id FROM users WHERE acct = ? LIMIT 1');
+$sm->execute([$acct]);
+if ($sm->fetch() === false) {
+	echo 'User not exists. Create it';
+} else {
+	echo 'User exists. Update data';
+}
+die;
+
 var_dump($output);
 echo '<br><br>';
 var_dump($payload);