add fields for outgoing letter

app/Filament/Resources/OutgoingLetterResource.php

@@ -9,7 +9,11 @@ use Filament\Forms\Form;
 use Filament\Resources\Resource;
 use Filament\Tables;
 use Filament\Tables\Columns\TextColumn;
+use Filament\Forms\Components\FileUpload;
+
 use Filament\Tables\Table;
+use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Support\Carbon;
 
 class OutgoingLetterResource extends Resource
 {
@@ -22,15 +26,35 @@ class OutgoingLetterResource extends Resource
         return $form
             ->schema([
                 TextInput::make('number')
+                    ->integer()
+                    ->required()
+                    ->default(fn () => getLatestNumber() + 1),
+
+                TextInput::make('name')
                     ->required(),
+
+                FileUpload::make('main_file'),
             ]);
     }
 
     public static function table(Table $table): Table
     {
         return $table
+            ->defaultSort('number', 'desc')
             ->columns([
-                TextColumn::make('number'),
+                TextColumn::make('number')
+                    ->searchable()
+                    ->sortable(query: fn (Builder $query, string $direction) => $query->orderByRaw("CAST(number AS UNSIGNED) $direction")),
+
+                TextColumn::make('name')
+                    ->searchable()
+                    ->sortable(),
+
+                TextColumn::make('created_at')
+                    ->dateTime()
+                    ->sortable()
+                    ->sinceTooltip()
+                    ->formatStateUsing(fn (?Carbon $state) => $state?->format('H:i, d.m.Y')),
             ])
             ->filters([
                 //