<?php

namespace App\Http\Controllers\Admin\Inventory;

use App\Http\Controllers\Controller;
use App\Http\Requests\Inventory\StorePackagingItemRequest;
use App\Http\Requests\Inventory\UpdatePackagingItemRequest;
use App\Models\PackagingItem;
use App\Models\PackagingMaterial;
use App\Models\StorageRoom;
use App\Models\StorageShelf;
use App\Models\StorageSlot;
use App\Models\Supplier;
use App\Repositories\PackagingItemRepository;
use App\Services\DeletionGuard;
use Illuminate\Http\Request;
use Illuminate\Support\Collection;

class PackagingItemController extends Controller
{
    public function __construct(
        protected PackagingItemRepository $packagingItemRepository
    ) {}

    public function index(Request $request)
    {
        $category = $request->get('category', 'packaging');
        $isShipping = $category === 'shipping';

        $query = PackagingItem::query()
            ->with(['packagingMaterial', 'supplier', 'storageRoom', 'storageShelf', 'storageSlot'])
            ->orderBy('name');

        if ($isShipping) {
            $query->where('category', 'shipping');
        } else {
            $query->where('category', 'packaging');
        }

        return view('admin.inventory.packaging-items.index', [
            'values' => $query->get(),
            'category' => $category,
            'pageTitle' => $isShipping ? __('Versandverpackung') : __('Produktverpackung'),
        ]);
    }

    public function create(Request $request)
    {
        $category = $request->query('category', 'packaging');
        if (! in_array($category, ['packaging', 'shipping'], true)) {
            $category = 'packaging';
        }

        return view('admin.inventory.packaging-items.form', [
            'model' => new PackagingItem(['active' => true, 'category' => $category === 'shipping' ? 'shipping' : 'packaging', 'weight_grams' => 0]),
            'packagingMaterials' => PackagingMaterial::query()->orderBy('pos')->orderBy('name')->get(),
            'suppliers' => Supplier::query()->orderBy('name')->get(),
            'category' => $category,
            ...$this->storageOptions(),
        ]);
    }

    /**
     * AP-51: Lagerplatz-Bausteine (Raum/Regal/Fach) für das Formular.
     *
     * @return array<string, Collection<int, mixed>>
     */
    private function storageOptions(): array
    {
        return [
            'storageRooms' => StorageRoom::query()->active()->orderBy('pos')->orderBy('label')->get(),
            'storageShelves' => StorageShelf::query()->active()->orderBy('pos')->orderBy('label')->get(),
            'storageSlots' => StorageSlot::query()->active()->orderBy('pos')->orderBy('label')->get(),
        ];
    }

    public function store(StorePackagingItemRequest $request)
    {
        $validated = $request->validated();

        $item = $this->packagingItemRepository->create($validated);

        \Session::flash('alert-save', '1');

        $category = $item->category === 'shipping' ? 'shipping' : 'packaging';

        return redirect()->route('admin.inventory.packaging-items.index', ['category' => $category]);
    }

    public function edit(PackagingItem $packagingItem)
    {
        $category = $packagingItem->category === 'shipping' ? 'shipping' : 'packaging';

        return view('admin.inventory.packaging-items.form', [
            'model' => $packagingItem,
            'packagingMaterials' => PackagingMaterial::query()->orderBy('pos')->orderBy('name')->get(),
            'suppliers' => Supplier::query()->orderBy('name')->get(),
            'category' => $category,
            ...$this->storageOptions(),
        ]);
    }

    public function update(UpdatePackagingItemRequest $request, PackagingItem $packagingItem)
    {
        $validated = $request->validated();

        $this->packagingItemRepository->update($packagingItem, $validated);

        \Session::flash('alert-save', '1');

        $category = $packagingItem->category === 'shipping' ? 'shipping' : 'packaging';

        return redirect()->route('admin.inventory.packaging-items.index', ['category' => $category]);
    }

    public function destroy(PackagingItem $packagingItem)
    {
        $category = $packagingItem->category === 'shipping' ? 'shipping' : 'packaging';

        $guard = app(DeletionGuard::class);
        $blockers = $guard->blockersFor($packagingItem);
        if ($blockers !== []) {
            \Session::flash('alert-error', $guard->message($blockers));

            return redirect()->route('admin.inventory.packaging-items.index', ['category' => $category]);
        }

        $packagingItem->delete();

        \Session::flash('alert-success', __('Eintrag gelöscht'));

        return redirect()->route('admin.inventory.packaging-items.index', ['category' => $category]);
    }
}