type orianted methods and responses

server/autoloader.php

@@ -0,0 +1,10 @@
+<?php
+function customAutoloader($className) {
+  $filePath = __DIR__ . '/' . str_replace('\\', '/', $className) . '.php';
+
+  if (file_exists($filePath)) {
+      include $filePath;
+  }
+}
+
+spl_autoload_register('customAutoloader');

server/index.php

@@ -0,0 +1,14 @@
+<?php
+ini_set('display_errors', 1);
+require('./autoloader.php');
+
+use urlManipulator\UrlManipulator;
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    $urlManipulator = new UrlManipulator();
+    $url = $_POST['url'];
+    $result = $urlManipulator->manipulateUrl($url);
+
+    header('Content-Type: application/json');
+    echo json_encode($result);
+}

server/urlManipulator/AbstractUrlManipulator.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace urlManipulator;
+
+abstract class AbstractUrlManipulator
+{
+  abstract public function manipulateUrl(string $url);
+
+  abstract protected function addParamToUrl(string $url, string $param, string $value);
+
+  abstract protected function generateRandomValue();
+
+  abstract protected function getNewParam(array $existingParams);
+}
+

server/urlManipulator/UrlManipulator.php

@@ -1,10 +1,12 @@
 <?php
 
-class UrlManipulator
+namespace urlManipulator;
+
+class UrlManipulator extends AbstractUrlManipulator
 {
     private $paramsArray = ['param1', 'param2', 'param3', 'param4'];
     
-    public function manipulateUrl($url)
+    public function manipulateUrl($url): array
     {
         if (!filter_var($url, FILTER_VALIDATE_URL)) {
             return ['error' => 'Invalid URL', 'input' => $url];
@@ -31,13 +33,10 @@ class UrlManipulator
 
         $modifiedUrl = $this->addParamToUrl($url, $newParam, $randomValue);
 
-        return [
+        return ['status' => 200, 'data' => $modifiedUrl];
-            'before' => $url,
-            'after' => $modifiedUrl,
-        ];
     }
 
-    private function addParamToUrl($url, $param, $value)
+    protected function addParamToUrl(string $url, string $param, string $value): string
     {
         $separator = (parse_url($url, PHP_URL_QUERY) == null) ? '?' : '&';
 
@@ -50,12 +49,13 @@ class UrlManipulator
         return $modifiedUrl;
     }
 
-    private function generateRandomValue()
+    protected function generateRandomValue(): string
     {
         return uniqid();
     }
 
-    private function getNewParam($existingParams){
+    protected function getNewParam(array $existingParams): string | null
+    {
       while (!empty($this->paramsArray)) {
           $newParam = array_pop($this->paramsArray);
 
@@ -69,11 +69,3 @@ class UrlManipulator
 
 }
 
-if ($_SERVER['REQUEST_METHOD'] === 'POST') {
-    $urlManipulator = new UrlManipulator();
-    $url = $_POST['url'];
-    $result = $urlManipulator->manipulateUrl($url);
-
-    header('Content-Type: application/json');
-    echo json_encode($result);
-}

web-client/script.js

@@ -3,7 +3,7 @@ function manipulateUrl() {
   
   $.ajax({
       type: 'POST',
-      url: '../server/process.php',
+      url: '../server/index.php',
       data: { url: url },
       dataType: 'json',
       success: function (result) {