<?php

namespace App\Http\Controllers;

use App\Models\Reservation;
use App\Models\Shortage;
use App\Services\SparePartIssueService;
use App\Services\SparePartReservationService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;

/**
 * Контроллер управления резервами запчастей
 */
class SparePartReservationController extends Controller
{
    public function __construct(
        protected SparePartReservationService $reservationService,
        protected SparePartIssueService $issueService
    ) {}

    /**
     * Список резервов для рекламации (API)
     */
    public function forReclamation(int $reclamationId): JsonResponse
    {
        $reservations = $this->reservationService->getReservationsForReclamation($reclamationId);

        return response()->json([
            'reservations' => $reservations->map(fn($r) => [
                'id' => $r->id,
                'spare_part_id' => $r->spare_part_id,
                'article' => $r->sparePart->article,
                'used_in_maf' => $r->sparePart->used_in_maf,
                'reserved_qty' => $r->reserved_qty,
                'with_documents' => $r->with_documents,
                'status' => $r->status,
                'order_id' => $r->spare_part_order_id,
                'created_at' => $r->created_at->format('d.m.Y H:i'),
            ]),
        ]);
    }

    /**
     * Дефициты для рекламации (API)
     */
    public function shortagesForReclamation(int $reclamationId): JsonResponse
    {
        $shortages = Shortage::query()
            ->where('reclamation_id', $reclamationId)
            ->with('sparePart')
            ->get();

        return response()->json([
            'shortages' => $shortages->map(fn($s) => [
                'id' => $s->id,
                'spare_part_id' => $s->spare_part_id,
                'article' => $s->sparePart->article,
                'used_in_maf' => $s->sparePart->used_in_maf,
                'required_qty' => $s->required_qty,
                'reserved_qty' => $s->reserved_qty,
                'missing_qty' => $s->missing_qty,
                'with_documents' => $s->with_documents,
                'status' => $s->status,
                'coverage_percent' => $s->coverage_percent,
                'created_at' => $s->created_at->format('d.m.Y H:i'),
            ]),
        ]);
    }

    /**
     * Отменить резерв
     */
    public function cancel(Request $request, Reservation $reservation): RedirectResponse
    {
        $reason = $request->input('reason', 'Отмена пользователем');

        if (!$reservation->isActive()) {
            return back()->with(['error' => 'Резерв не активен!']);
        }

        $this->reservationService->cancelReservation($reservation, $reason);

        return back()->with(['success' => 'Резерв отменён!']);
    }

    /**
     * Списать резерв (выполнить отгрузку)
     */
    public function issue(Request $request, Reservation $reservation): RedirectResponse
    {
        $note = $request->input('note', '');

        if (!$reservation->isActive()) {
            return back()->with(['error' => 'Резерв не активен!']);
        }

        try {
            $this->issueService->issueReservation($reservation, $note);
            return back()->with(['success' => 'Списание выполнено!']);
        } catch (\Exception $e) {
            return back()->with(['error' => $e->getMessage()]);
        }
    }

    /**
     * Списать все резервы для рекламации
     */
    public function issueAllForReclamation(Request $request, int $reclamationId): RedirectResponse
    {
        $results = $this->issueService->issueForReclamation($reclamationId);

        $totalIssued = array_sum(array_map(fn($r) => $r->issued, $results));

        return back()->with([
            'success' => "Списано запчастей: {$totalIssued} шт."
        ]);
    }

    /**
     * Отменить все резервы для рекламации
     */
    public function cancelAllForReclamation(Request $request, int $reclamationId): RedirectResponse
    {
        $reason = $request->input('reason', 'Массовая отмена');

        $totalCancelled = $this->reservationService->cancelForReclamation($reclamationId);

        return back()->with([
            'success' => "Отменено резервов на {$totalCancelled} шт."
        ]);
    }
}