add: full multi-tenancy control

packages/Webkul/Installer/src/Http/Middleware/CanInstall.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Webkul\Installer\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Event;
+use Illuminate\Support\Str;
+use Webkul\Installer\Helpers\DatabaseManager;
+
+class CanInstall
+{
+    /**
+     * Handles Requests if application is already installed then redirect to dashboard else to installer.
+     */
+    public function handle(Request $request, Closure $next): mixed
+    {
+        if (Str::contains($request->getPathInfo(), '/install')) {
+            if ($this->isAlreadyInstalled() && ! $request->ajax()) {
+                return redirect()->route('admin.dashboard.index');
+            }
+        } else {
+            if (! $this->isAlreadyInstalled()) {
+                return redirect()->route('installer.index');
+            }
+        }
+
+        return $next($request);
+    }
+
+    /**
+     * Check if application is already installed.
+     */
+    public function isAlreadyInstalled(): bool
+    {
+        if (file_exists(storage_path('installed'))) {
+            return true;
+        }
+
+        if (app(DatabaseManager::class)->isInstalled()) {
+            touch(storage_path('installed'));
+
+            Event::dispatch('krayin.installed');
+
+            return true;
+        }
+
+        return false;
+    }
+}

packages/Webkul/Installer/src/Http/Middleware/Locale.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Webkul\Installer\Http\Middleware;
+
+use Closure;
+
+class Locale
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        if ($localeCode = $request->query('locale')) {
+            app()->setLocale($localeCode);
+
+            session()->put('installer_locale', $localeCode);
+        } else {
+            app()->setLocale(session()->get('installer_locale') ?? config('app.locale'));
+        }
+
+        return $next($request);
+    }
+}