add rest application and discount-status rest method

rest/controllers/RestController.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace rest\controllers;
+
+
+use common\models\User;
+use yii\filters\auth\HttpBasicAuth;
+use yii\rest\Controller;
+
+class RestController extends Controller
+{
+
+    public function behaviors()
+    {
+        $behaviors = parent::behaviors();
+        $behaviors['authenticator'] = [
+            'class' => HttpBasicAuth::className(),
+            'auth' => [$this, 'auth']
+        ];
+        return $behaviors;
+    }
+
+    public function auth($username, $password)
+    {
+        try {
+            $user = User::findOne(['username' => $username]);
+            if ($user->validatePassword($password)) {
+                return $user;
+            }
+        } catch (\Exception $e) {
+            \Yii::error("Failed to load user: " . $e->getMessage());
+        }
+        return null;
+    }
+
+
+}