Enhance API error handling and response structure; update app name retrieval method

api/setup/save.php

@@ -18,6 +18,7 @@ if (!isset($input["username"]) || !isset($input["password"]) || !isset($input["p
         "error" => "missing_fields",
         "error_text" => "Some fields are missing"
     ]);
+    return;
 }
 
 // Check if application already configurated
@@ -26,6 +27,7 @@ if (is_file(APP_PATH . "database.db")) {
         "error" => "already_configurated",
         "error_text" => "The application is already configurated."
     ]);
+    return;
 }
 
 // Check PDO drivers
@@ -34,6 +36,7 @@ if (!extension_loaded("pdo_sqlite") || !extension_loaded("sqlite3")) {
         "error" => "missing_drives",
         "error_text" => "Please install the extensions pdo_sqlite and sqlite3."
     ]);
+    return;
 }
 
 $username = $input["username"];
@@ -46,6 +49,7 @@ if ($password !== $password_repeat) {
         "error" => "passwords_dont_match",
         "error_text" => "The passwords does not match."
     ]);
+    return;
 }
 
 // Hash Password