update: api version

app/Http/Controllers/V1/User/ServerController.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Controllers\V1\User;
+
+use App\Http\Controllers\Controller;
+use App\Models\User;
+use App\Services\ServerService;
+use App\Services\UserService;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
+use Illuminate\Support\Facades\DB;
+
+class ServerController extends Controller
+{
+    public function fetch(Request $request)
+    {
+        $user = User::find($request->user['id']);
+        $servers = [];
+        $userService = new UserService();
+        if ($userService->isAvailable($user)) {
+            $serverService = new ServerService();
+            $servers = $serverService->getAvailableServers($user);
+        }
+        $eTag = sha1(json_encode(array_column($servers, 'cache_key')));
+        if (strpos($request->header('If-None-Match'), $eTag) !== false ) {
+            abort(304);
+        }
+
+        return response([
+            'data' => $servers
+        ])->header('ETag', "\"{$eTag}\"");
+    }
+}