Add maintenance pages

app/Console/Commands/SubmissionsDown.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Attributes\Description;
+use Illuminate\Console\Attributes\Signature;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Cache;
+
+#[Signature('submissions:down')]
+#[Description('Disable submissions')]
+class SubmissionsDown extends Command
+{
+    /**
+     * Execute the console command.
+     */
+    public function handle()
+    {
+        Cache::put('submissions_maintenance', true );
+        $this->info("Submissions disabled.");
+    }
+}

app/Console/Commands/SubmissionsUp.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Attributes\Description;
+use Illuminate\Console\Attributes\Signature;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Cache;
+
+#[Signature('submissions:up')]
+#[Description('Enable submissions')]
+class SubmissionsUp extends Command
+{
+    /**
+     * Execute the console command.
+     */
+    public function handle()
+    {
+        Cache::forget('submissions_maintenance');
+        $this->info('Submissions enabled.');
+    }
+}

app/Http/Middleware/SubmissionsEnabled.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
+use Symfony\Component\HttpFoundation\Response;
+
+class SubmissionsEnabled
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  Closure(Request): (Response)  $next
+     */
+    public function handle(Request $request, Closure $next): Response
+    {
+        if( Cache::get('submissions_maintenance', false ) ){
+            if( $request->expectsJson() ){
+                return response()->json([
+                    'message' => 'The submissions are currently in maintenance mode.',
+                ], 503 );
+            }
+
+            return back()->withErrors([
+                'maintenance' => "The submissions are currently in maintenance mode.",
+            ])->withInput();
+        }
+
+        return $next($request);
+    }
+}

app/View/Components/ErrorBlock.php

@@ -14,6 +14,10 @@ class ErrorBlock extends Component
             'icon' => 'ban',
             'message' => '%s'
         ],
+        'not-found' => [
+            'icon' => 'sticky-note-off',
+            'message' => "404: This page does not exist."
+        ],
         'page-not-allowed' => [
             'icon' => 'shield-ban',
             'message' => "You do not have permission to access this page.\nRequired permission: %s"
@@ -21,6 +25,10 @@ class ErrorBlock extends Component
         'user-state-not-valid' => [
             'icon' => 'shield-ban',
             'message' => "You do not have permission to access this page.\nYour user profile is incomplete: %s\nGo back to the forum for more details."
+        ],
+        'server-error' => [
+            'icon' => 'bomb',
+            'message' => "500: Internal Server Error."
         ]
     ];