SpiceManagementSystem/app/Filament/User/Resources/ProductResource/Pages/EditProduct.php

<?php

namespace App\Filament\User\Resources\ProductResource\Pages;

use App\Filament\User\Resources\ProductResource;
use App\Models\Recipe;
use Filament\Actions;
use Filament\Resources\Pages\EditRecord;

class EditProduct extends EditRecord
{
    protected static string $resource = ProductResource::class;

    protected function getHeaderActions(): array
    {
        return [
            Actions\Action::make('rezept-versionen')
                ->label('Rezept-Versionen')
                ->icon('heroicon-o-clock')
                ->color('gray')
                ->url(fn () => ProductResource::getUrl('recipe-history', ['record' => $this->record])),
            Actions\DeleteAction::make(),
        ];
    }

    protected function afterSave(): void
    {
        $this->syncSizes();
        $this->syncRecipe();
    }

    protected function syncSizes(): void
    {
        $product = $this->record;

        $sizes = collect($this->data['sizes'] ?? [])
            ->mapWithKeys(function ($size) {
                return [
                    $size['packing_id'] => [
                        'description' => $size['description'] ?? null,
                        'price'       => $size['price'],
                        'sku'         => $size['sku'] ?? null,
                        'gtin'        => $size['gtin'] ?? null,
                    ],
                ];
            })
            ->toArray();

        $product->sizes()->sync($sizes);
    }

    protected function syncRecipe(): void
    {
        $product = $this->record;
        $name    = $this->data['recipe_name'] ?? null;
        $spices  = $this->data['recipe_spices'] ?? [];

        if (! $name) {
            return;
        }

        $newPivot = collect($spices)->mapWithKeys(fn ($s) => [
            (int) $s['spice_id'] => (float) $s['amount_in_percent'],
        ])->toArray();

        $current = $product->recipe;

        if ($current) {
            $current->load('spices');

            $existingPivot = $current->spices->mapWithKeys(fn ($s) => [
                $s->id => (float) $s->pivot->amount_in_percent,
            ])->toArray();

            $nameChanged   = $current->name !== $name;
            $spicesChanged = $existingPivot != $newPivot;

            if (! $nameChanged && ! $spicesChanged) {
                return;
            }
        }

        $nextVersion = Recipe::where('product_id', $product->id)->max('version') + 1;

        $recipe = Recipe::create([
            'name'       => $name,
            'product_id' => $product->id,
            'version'    => $nextVersion,
        ]);

        $recipe->spices()->sync(
            collect($newPivot)->mapWithKeys(fn ($pct, $id) => [
                $id => ['amount_in_percent' => $pct],
            ])->toArray()
        );

        $product->update(['recipes_id' => $recipe->id]);
    }
}