package installer

app/Http/Middleware/Installer/canUpdate.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace App\Http\Middleware\Installer;
+
+use Closure;
+
+class canUpdate
+{
+    use \App\Helpers\Installer\MigrationsHelper;
+
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        $updateEnabled = filter_var(config('installer.updaterEnabled'), FILTER_VALIDATE_BOOLEAN);
+        switch ($updateEnabled) {
+            case true:
+                $canInstall = new canInstall;
+
+                // if the application has not been installed,
+                // redirect to the installer
+                if (! $canInstall->alreadyInstalled()) {
+                    return redirect()->route('LaravelInstaller::welcome');
+                }
+
+                if ($this->alreadyUpdated()) {
+                    abort(404);
+                }
+                break;
+
+            case false:
+            default:
+                abort(404);
+                break;
+        }
+
+        return $next($request);
+    }
+
+    /**
+     * If application is already updated.
+     *
+     * @return bool
+     */
+    public function alreadyUpdated()
+    {
+        $migrations = $this->getMigrations();
+        $dbMigrations = $this->getExecutedMigrations();
+
+        // If the count of migrations and dbMigrations is equal,
+        // then the update as already been updated.
+        if (count($migrations) == count($dbMigrations)) {
+            return true;
+        }
+
+        // Continue, the app needs an update
+        return false;
+    }
+}