Create WS URL method

Author: WyriHaximus

src/ApiSettings.php

@@ -7,6 +7,8 @@
 final class ApiSettings
 {
     /**
+     * Create Pusher compatible version
+     *
      * @param string $version
      * @return string
      */
@@ -24,4 +26,24 @@ public static function getVersion(string $version = ''): string
 
         return $version;
     }
+
+    /**
+     * Create WebSocket URL for given App ID
+     *
+     * @param string $appId
+     * @return string
+     */
+    public static function createUrl(string $appId): string
+    {
+        $query = [
+            'client' => 'api-clients/pusher (https://php-api-clients.org/clients/pusher)',
+            'protocol' => 7,
+            'version' => ApiSettings::getVersion(),
+        ];
+
+        return 'wss://ws.pusherapp.com/app/' .
+            $appId .
+            '?' . http_build_query($query)
+        ;
+    }
 }

tests/ApiSettingsTest.php

@@ -33,4 +33,11 @@ public function testGetVersionDefault()
     {
         $this->assertTrue(strlen(ApiSettings::getVersion()) > 0);
     }
+
+    public function testCreateUrl()
+    {
+        $expectedUrl = 'wss://ws.pusherapp.com/app/barBaz?client=api-clients%2Fpusher+%28https%3A%2F%2Fphp-api-clients.org%2Fclients%2Fpusher%29&protocol=7&version=' . ApiSettings::getVersion();
+
+        $this->assertSame($expectedUrl, ApiSettings::createUrl('barBaz'));
+    }
 }