Interpret Server StartupCommand variables (#1009)

* Use `StartupCommandService`

* Simplify variable name

* Add `PreviewStartupAction`

app/Filament/Admin/Resources/ServerResource/Pages/EditServer.php

@@ -7,6 +7,7 @@ use App\Enums\ServerState;
 use App\Enums\SuspendAction;
 use App\Filament\Admin\Resources\ServerResource;
 use App\Filament\Admin\Resources\ServerResource\RelationManagers\AllocationsRelationManager;
+use App\Filament\Components\Forms\Actions\PreviewStartupAction;
 use App\Filament\Components\Forms\Actions\RotateDatabasePasswordAction;
 use App\Filament\Server\Pages\Console;
 use App\Models\Database;
@@ -549,12 +550,14 @@ class EditServer extends EditRecord
                                         true => 'tabler-code-off',
                                     ])
                                     ->required(),
-
+                                Hidden::make('previewing')
+                                    ->default(false),
                                 Textarea::make('startup')
                                     ->label(trans('admin/server.startup_cmd'))
                                     ->required()
                                     ->columnSpan(6)
-                                    ->autosize(),
+                                    ->autosize()
+                                    ->hintAction(PreviewStartupAction::make('preview')),
 
                                 Textarea::make('defaultStartup')
                                     ->hintAction(fn () => request()->isSecure() ? CopyAction::make() : null)

app/Filament/Components/Forms/Actions/PreviewStartupAction.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Filament\Components\Forms\Actions;
+
+use App\Models\Server;
+use App\Services\Servers\StartupCommandService;
+use Filament\Forms\Components\Actions\Action;
+use Filament\Forms\Get;
+use Filament\Forms\Set;
+
+class PreviewStartupAction extends Action
+{
+    public static function getDefaultName(): ?string
+    {
+        return 'preview';
+    }
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->action(function (Get $get, Set $set, Server $server) {
+            $active = $get('previewing');
+            $set('previewing', !$active);
+            $set('startup', $active ? $server->startup : fn (Server $server, StartupCommandService $service) => $service->handle($server));
+        });
+    }
+}

app/Filament/Server/Pages/Startup.php

@@ -3,12 +3,14 @@
 namespace App\Filament\Server\Pages;
 
 use App\Facades\Activity;
+use App\Filament\Components\Forms\Actions\PreviewStartupAction;
 use App\Models\Permission;
 use App\Models\Server;
 use App\Models\ServerVariable;
 use Closure;
 use Filament\Facades\Filament;
 use Filament\Forms\Components\Component;
+use Filament\Forms\Components\Hidden;
 use Filament\Forms\Components\Repeater;
 use Filament\Forms\Components\Section;
 use Filament\Forms\Components\Select;
@@ -37,6 +39,8 @@ class Startup extends ServerFormPage
                 'lg' => 6,
             ])
             ->schema([
+                Hidden::make('previewing')
+                    ->default(false),
                 Textarea::make('startup')
                     ->label('Startup Command')
                     ->columnSpan([
@@ -46,6 +50,7 @@ class Startup extends ServerFormPage
                         'lg' => 4,
                     ])
                     ->autosize()
+                    ->hintAction(PreviewStartupAction::make('preview'))
                     ->readOnly(),
                 TextInput::make('custom_image')
                     ->label('Docker Image')