SpiceManagementSystem/app/Filament/User/Resources/SpiceSupplierResource.php

<?php

namespace App\Filament\User\Resources;

use App\Filament\User\Resources\SpiceSupplierResource\Pages;
use App\Filament\User\Resources\SpiceSupplierResource\RelationManagers;
use App\Models\SpiceSupplier;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\SoftDeletingScope;

use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Get;


use Filament\Forms\Components\DatePicker;
use Filament\Tables\Columns\TextColumn;

class SpiceSupplierResource extends Resource
{
    protected static ?string $model = SpiceSupplier::class;

    protected static ?string $navigationIcon = 'heroicon-o-arrow-down-on-square';
   
    protected static ?string $navgationLabel = 'Rohstofflieferungen';
    protected static ?string $modelLabel = 'Rohstofflieferungen';
    protected static ?string $slug = 'rohstofflieferung';
    protected static ?string $navigationGroup = 'Waren Ein/Ausgang';

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Select::make('spice_id')
                ->label('Rohstoff')
                ->relationship('spice', 'name')
                ->required()
                ->preload()
                ->searchable()
                ->live()
                ->createOptionForm([
                    TextInput::make('name')->label('Name')->required()->maxLength(255),
                    Forms\Components\Select::make('unit')
                        ->label('Mengeneinheit')
                        ->native(false)
                        ->options([
                            'grams'  => '(Kilo-)Gramm',
                            'pieces' => 'Stück',
                            'liter'  => 'Liter',
                        ])
                        ->required(),
                ])
                ->createOptionUsing(function (array $data) {
                    return \App\Models\Spice::create($data)->id;
                }),
            Select::make('supplier_id')
                ->label('Lieferant')
                ->relationship('supplier', 'name')
                ->required()
                ->preload()
                ->searchable(),

                TextInput::make('amount')
                    ->label('Liefermenge')
                    ->numeric()
                    ->required()
                    ->rules(['min:0.001'])
                    ->disabled(fn($record) => !is_null($record))
                    ->label(function (Get $get) {
                        $unit = \App\Models\Spice::find($get('spice_id'))?->unit;
                        return $unit === 'pieces' ? 'Anzahl Stück' : 'Liefermenge';
                    })
                    ->suffix(function (Get $get) {
                        $unit = \App\Models\Spice::find($get('spice_id'))?->unit;
                        return match($unit) {
                            'grams'  => 'kg',
                            'pieces' => 'Stück',
                            'liter'  => 'Liter',
                            default  => null,
                        };
                    })
                    ->formatStateUsing(function ($state, $record) {
                        if ($record?->spice?->unit === 'grams') {
                            return round($state / 1000, 3);
                        }
                        return $state;
                    })
                    ->dehydrateStateUsing(function ($state, Get $get) {
                        $unit = \App\Models\Spice::find($get('spice_id'))?->unit;
                        return $unit === 'grams' ? (float) $state * 1000 : $state;
                    }),

                TextInput::make('weight_g')
                    ->label('Gesamtgewicht dieser Lieferung (g)')
                    ->numeric()
                    ->suffix('g')
                    ->helperText('Optional — aktualisiert das Ø Stückgewicht automatisch')
                    ->disabled(fn($record) => !is_null($record))
                    ->visible(function (Get $get) {
                        return \App\Models\Spice::find($get('spice_id'))?->unit === 'pieces';
                    }),
                    
                DatePicker::make('supplied_at')
                    ->label('Lieferdatum')
                    ->default(now())  
                    ->required(),
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('spice.name')->label('Rohstoff')->searchable(),
                TextColumn::make('supplier.name')->label('Lieferant')->searchable(),
                TextColumn::make('amount')->label('Liefermenge'),
                TextColumn::make('supplied_at')->label('Lieferdatum')->date('d.m.Y'),  // Lieferdatum in der Tabelle anzeigen
            ])
            ->actions([
                Tables\Actions\EditAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\DeleteBulkAction::make(),
            ]);
    }

    protected static function getTableActions(): array
    {
        return [
            DeleteAction::make()
                ->before(function ($record, DeleteAction $action) {
                    // Custom check logic
                    
                    if (true) {
                        // Notify user about the restriction
                        Notification::make()
                            ->title('Deletion Error')
                            ->body("This record cannot be deleted because it has related records.")
                            ->status('danger')
                            ->send();

                        // Cancel the deletion
                        $action->cancel();
                    }
                }),
        ];
    }

    public static function getRelations(): array
    {
        return [];
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListSpiceSuppliers::route('/'),
            'create' => Pages\CreateSpiceSupplier::route('/create'),
            'edit' => Pages\EditSpiceSupplier::route('/{record}/edit'),
        ];
    }
    public static function getPluralLabel(): string
    {
        return 'Rohstofflieferungen'; 
    }
}