added pargar

app/Http/Middleware/PargarAuth.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use App\Services\ConfigService;
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
+
+class PargarAuth
+{
+    public function handle(Request $request, Closure $next)
+    {
+        if (! app(ConfigService::class)->isPargarAccounting()) {
+            return response()->json([
+                'success' => false,
+                'message' => 'Pargar integration is disabled',
+                'data' => null,
+            ], 503);
+        }
+
+        $auth = $request->header('Authorization') ?? $request->header('pargar');
+        $token = is_string($auth) ? trim(str_replace('Bearer ', '', $auth)) : '';
+
+        if ($token === '' || ! $this->tokenValid($token)) {
+            return response()->json([
+                'success' => false,
+                'message' => 'Invalid credentials!',
+                'data' => null,
+            ], 401);
+        }
+
+        return $next($request);
+    }
+
+    public static function issueToken(string $username): string
+    {
+        $token = bin2hex(random_bytes(32));
+        Cache::put(self::cacheKey($token), $username, now()->addDay());
+
+        return $token;
+    }
+
+    public static function tokenValid(string $token): bool
+    {
+        $config = app(ConfigService::class);
+        $static = trim($config->getString('pargar_api_token', ''));
+        if ($static !== '' && hash_equals($static, $token)) {
+            return true;
+        }
+
+        return Cache::has(self::cacheKey($token));
+    }
+
+    private static function cacheKey(string $token): string
+    {
+        return 'pargar_api_token:' . $token;
+    }
+}