<?php

declare(strict_types=1);

namespace App\Http\Controllers;

use App\Http\Requests\ReserveStockRequest;
use App\Models\CommonCatalogItem;
use App\Models\StockOrder;
use App\Models\StockReservation;
use App\Models\User;
use App\Services\StockInventoryService;
use DomainException;
use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

class StockController extends Controller
{
    public function __construct(private readonly StockInventoryService $inventoryService) {}

    public function index(Request $request): View
    {
        $search = trim((string) $request->query('search', ''));
        $kind = trim((string) $request->query('kind', ''));
        $status = trim((string) $request->query('status', ''));
        $perPage = $this->perPage($request);
        $items = CommonCatalogItem::query()
            ->whereHas('stockOrders')
            ->with(['imageFile', 'latestStockOrder'])
            ->withSum([
                'stockOrders as physical_quantity' => fn (Builder $query) => $query->where('status', StockOrder::STATUS_IN_STOCK),
            ], 'available_quantity')
            ->withSum([
                'stockReservations as reserved_quantity' => fn (Builder $query) => $query->active(),
            ], 'quantity')
            ->withSum([
                'stockOrders as ordered_stock_quantity' => fn (Builder $query) => $query->where('status', StockOrder::STATUS_ORDERED),
            ], 'ordered_quantity')
            ->when($search !== '', function (Builder $query) use ($search): void {
                $query->where(function (Builder $query) use ($search): void {
                    $query->where('article', 'like', "%{$search}%")
                        ->orWhere('calculator_name', 'like', "%{$search}%")
                        ->orWhere('kind', 'like', "%{$search}%");
                });
            })
            ->when($kind !== '', fn (Builder $query) => $query->where('kind', $kind))
            ->when(array_key_exists($status, StockOrder::STATUS_NAMES), fn (Builder $query) => $query
                ->whereHas('stockOrders', fn (Builder $query) => $query->where('status', $status)))
            ->orderBy('article')
            ->paginate($perPage)
            ->withQueryString();

        return view('stock.index', [
            'active' => 'stock',
            'items' => $items,
            'search' => $search,
            'kind' => $kind,
            'status' => $status,
            'kinds' => CommonCatalogItem::query()
                ->whereHas('stockOrders')
                ->whereNotNull('kind')
                ->where('kind', '<>', '')
                ->distinct()
                ->orderBy('kind')
                ->pluck('kind'),
            'statuses' => StockOrder::STATUS_NAMES,
            'per_page' => $perPage,
        ]);
    }

    public function show(CommonCatalogItem $item): View
    {
        $item->load([
            'imageFile',
            'stockOrders' => fn ($query) => $query
                ->withSum(['reservations as active_reservations_sum_quantity' => fn ($query) => $query->active()], 'quantity')
                ->orderByDesc('created_at'),
            'stockReservations' => fn ($query) => $query
                ->with(['manager', 'order'])
                ->orderByDesc('created_at'),
            'stockMovements' => fn ($query) => $query
                ->with(['user', 'order'])
                ->orderByDesc('created_at'),
        ]);

        return view('stock.show', [
            'active' => 'stock',
            'item' => $item,
            'summary' => $this->inventoryService->summary($item),
            'managers' => User::query()->orderBy('name')->get(),
        ]);
    }

    public function reserve(ReserveStockRequest $request, CommonCatalogItem $item): RedirectResponse
    {
        /** @var User $actor */
        $actor = $request->user();
        $manager = User::query()->findOrFail((int) $request->validated('manager_id'));

        try {
            $this->inventoryService->reserve(
                $item,
                $manager,
                (int) $request->validated('quantity'),
                $request->validated('note'),
                $actor,
            );

            return back()->with('success', 'Позиция забронирована.');
        } catch (DomainException $exception) {
            return back()->withErrors(['quantity' => $exception->getMessage()])->withInput();
        }
    }

    public function issue(Request $request, StockReservation $reservation): RedirectResponse
    {
        /** @var User $actor */
        $actor = $request->user();

        try {
            $this->inventoryService->issue($reservation, $actor, $request->string('note')->toString());

            return back()->with('success', 'Бронь списана.');
        } catch (DomainException $exception) {
            return back()->with('error', $exception->getMessage());
        }
    }

    public function cancel(Request $request, StockReservation $reservation): RedirectResponse
    {
        /** @var User $actor */
        $actor = $request->user();

        try {
            $this->inventoryService->cancel($reservation, $actor, $request->string('note')->toString());

            return back()->with('success', 'Бронь отменена.');
        } catch (DomainException $exception) {
            return back()->with('error', $exception->getMessage());
        }
    }

    private function perPage(Request $request): int
    {
        $allowed = [50, 100, 200, 500, 2000];
        $perPage = (int) $request->query('per_page', session('per_page', 50));
        $perPage = in_array($perPage, $allowed, true) ? $perPage : 50;
        session(['per_page' => $perPage]);

        return $perPage;
    }
}