From 448f23c06cf6ec255212bc04e29bda4d8fe37e2b Mon Sep 17 00:00:00 2001
From: Sam Light <samlight1994@gmail.com>
Date: Fri, 9 Sep 2022 15:29:01 +0100
Subject: Created auth middleware base class

---
 src/Middleware/ScormPlayerAuthMiddleware.php | 91 ++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 src/Middleware/ScormPlayerAuthMiddleware.php

diff --git a/src/Middleware/ScormPlayerAuthMiddleware.php b/src/Middleware/ScormPlayerAuthMiddleware.php
new file mode 100644
index 0000000..8044821
--- /dev/null
+++ b/src/Middleware/ScormPlayerAuthMiddleware.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace Lightscale\ScormPlayer\Middleware;
+
+use Peopleaps\Scorm\Model\ScormModel as Scorm;
+use Lightscale\ScormPlayer\Models\{
+    ScormSco,
+    ScormScoTracking,
+};
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+
+use Illuminate\Support\Facades\Cache;
+
+class ScormPlayerAuthMiddleware
+{
+    private $cacheTimeout;
+
+    public function __construct()
+    {
+        $this->cacheTimeout = config('scorm.cache_timeout');
+    }
+
+    public function handle(Request $request, Closure $next)
+    {
+        try {
+            $module = $this->findModule($request);
+        }
+        catch(\Exception $e) {
+            return $this->failedResponse();
+        }
+
+        $user = $request->user();
+        $authorized = Cache::remember(
+            'scorm-player-authorize-{$user->id}_{$module->id}',
+            $this->cacheTimeout,
+            fn() => $this->authorize($request, $module)
+        );
+
+        if($authorized) return $next($request);
+        else return $this->failedResponse();
+    }
+
+    protected function failedResponse() : Response
+    {
+        return response('Not authorized', 503);
+    }
+
+    protected function findModule(Request $request) : Scorm
+    {
+        $route = $request->route();
+        $parameters = $route->parameters();
+        $routeName = $route->getName();
+
+        if($routeName === 'scorm-player.serve') {
+            $uuid = $route->parameter('uuid');
+            return Cache::remember(
+                "scrorm-player-uuid-{$uuid}-scorm",
+                $this->cacheTimeout,
+                fn() => Scorm::where('uuid', $uuid)->firstOrFail()
+            );
+        }
+        else foreach($parameters as $val) {
+            if(getType($val) !== 'object') continue;
+
+            if(is_a($val, Scorm::class))
+                return $val;
+            elseif(is_a($val, ScormSco::class))
+                return Cache::remember(
+                    "scorm-player-sco-{$val->id}-scorm",
+                    $this->cacheTimeout,
+                    fn() => $val->scorm
+                );
+            elseif(is_a($val, ScormScoTracking::class))
+                return Cache::remember(
+                    "scorm-player-sco-tracking-{$val->id}-scorm",
+                    $this->cacheTimeout,
+                    fn() => $val->sco->scorm
+                );
+        }
+
+        throw new \Exception('Failed to find module from route');
+    }
+
+    protected function authorize(Request $req, Scorm $module) : bool
+    {
+        return false;
+    }
+}
-- 
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