core/src/Shipping/Extensions/OrderViewExtension.php

<?php

namespace Modules\Core\Shipping\Extensions;

use Filament\Actions\Action;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Closure;
use Throwable;
use Filament\Actions;
use Filament\Forms;
use Filament\Notifications\Notification;
use Lunar\Admin\Support\Extending\ViewPageExtension;
use Lunar\Models\Order;
use Lunar\Shipping\Models\ShippingMethod;
use Modules\Core\Shipping\Contracts\CarrierFulfillmentInterface;
use Modules\Core\Shipping\DTOs\ShipmentRequest;

class OrderViewExtension extends ViewPageExtension
{
    public function headerActions(array $actions): array
    {
        $actions[] = $this->createShipmentAction();

        return $actions;
    }

    private function createShipmentAction(): Action
    {
        return Action::make('create_shipment')
            ->label('Create Shipment')
            ->icon('heroicon-o-truck')
            ->modalSubmitActionLabel('Create Shipment')
            ->schema([
                TextInput::make('weight')
                    ->label('Package weight (kg)')
                    ->numeric()
                    ->minValue(0)
                    ->helperText('Leave blank to use the carrier\'s default.'),
                TextInput::make('destination_location_id')
                    ->label('Box Now locker ID')
                    ->helperText('Only required for Box Now shipments.')
                    ->default(fn (Order $record) => $record->shippingAddress?->meta['box_now_locker']['locationId'] ?? null),
                Toggle::make('confirm')
                    ->label('Confirm')
                    ->helperText('This will create a real shipment with the carrier.')
                    ->rules([
                        function () {
                            return function (string $attribute, $value, Closure $fail) {
                                if ($value !== true) {
                                    $fail('Please confirm before creating the shipment.');
                                }
                            };
                        },
                    ]),
            ])
            ->action(function (Order $record, array $data, Action $action) {
                $service = $this->resolveFulfillmentService($record);

                if (! $service) {
                    Notification::make()
                        ->title('No carrier fulfillment integration is configured for this order.')
                        ->danger()
                        ->send();

                    $action->halt();

                    return;
                }

                $request = new ShipmentRequest(
                    weight: filled($data['weight'] ?? null) ? (float) $data['weight'] : null,
                    destinationLocationId: $data['destination_location_id'] ?? null,
                );

                try {
                    $service->createShipment($record, $request);
                } catch (Throwable $e) {
                    report($e);

                    Notification::make()
                        ->title('Failed to create shipment: '.$e->getMessage())
                        ->danger()
                        ->send();

                    $action->halt();

                    return;
                }

                Notification::make()
                    ->title('Shipment created.')
                    ->success()
                    ->send();
            })
            ->visible(fn (Order $record) => $record->shipments()->exists() === false
                && $this->resolveFulfillmentService($record) !== null);
    }

    private function resolveCarrier(Order $record): ?string
    {
        $code = $record->shippingAddress?->shipping_option;

        if (! $code) {
            return null;
        }

        return ShippingMethod::where('code', $code)->value('driver');
    }

    private function resolveFulfillmentService(Order $record): ?CarrierFulfillmentInterface
    {
        $carrier = $this->resolveCarrier($record);

        if (! $carrier) {
            return null;
        }

        return app(CarrierFulfillmentInterface::class, ['carrier' => $carrier]);
    }
}