<?php

declare(strict_types=1);

namespace App\Http\Controllers;

use App\Enums\ProductionOrderExecutionType;
use App\Enums\ProductionOrderStatus;
use App\Http\Requests\SaveProductionOrderRequest;
use App\Models\CommonCatalogItem;
use App\Models\ProductionOrder;
use App\Models\Role;
use App\Models\User;
use App\Services\Access\FieldAccessService;
use App\Services\ProductionOrderService;
use Illuminate\Contracts\View\View;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Arr;

class ProductionOrderController extends Controller
{
    private const FIELD_MAP = [
        'status_name' => 'status',
        'execution_type_name' => 'execution_type',
        'items_count' => 'id',
    ];

    protected array $data = [
        'active' => 'schedule_orders',
        'title' => 'График заказов',
        'id' => 'schedule_orders',
        'header' => [
            'id' => 'ID',
            'order_number' => 'Номер заказа',
            'customer_name' => 'Заказчик',
            'object_address' => 'Адрес объекта',
            'invoice_number' => '№ счёта',
            'payment_date' => 'Дата оплаты',
            'supply_working_days' => 'Срок поставки',
            'contract_shipment_date' => 'Дата отгрузки по договору',
            'application_shipment_date' => 'Дата отгрузки по заявке',
            'status_name' => 'Статус',
            'execution_type_name' => 'Тип',
            'manager_id' => 'Менеджер',
            'items_count' => 'МАФ',
            'note' => 'Примечание',
        ],
        'searchFields' => [
            'order_number',
            'customer_name',
            'object_address',
            'invoice_number',
            'contract_number',
            'note',
        ],
    ];

    public function index(Request $request): View
    {
        session(['gp_schedule_orders' => $request->query()]);
        $nav = $this->startNavigationContext($request);
        $model = new ProductionOrder;

        $this->data['header'] = array_filter(
            $this->data['header'],
            fn (string $field): bool => $request->user()->canViewField(
                'schedule-orders',
                self::FIELD_MAP[$field] ?? $field,
            ),
            ARRAY_FILTER_USE_KEY,
        );
        $this->data['searchFields'] = array_values(array_filter(
            $this->data['searchFields'],
            fn (string $field): bool => $request->user()->canViewField('schedule-orders', $field),
        ));
        $this->createDateFilters(
            $model,
            ...array_values(array_intersect([
                'payment_date',
                'contract_shipment_date',
                'application_shipment_date',
            ], array_keys($this->data['header']))),
        );
        if (isset($this->data['header']['supply_working_days'])) {
            $this->createRangeFilters($model, 'supply_working_days');
        }
        foreach (['status_name', 'execution_type_name'] as $field) {
            if (isset($this->data['header'][$field])) {
                $this->data['filters'][$field] = [
                    'title' => $this->data['header'][$field],
                    'values' => [],
                ];
            }
        }

        $query = ProductionOrder::query()->with('manager')->withCount('items');
        $this->acceptFilters($query, $request);
        $this->acceptSearch($query, $request);

        $requestedSort = $request->string('sortBy')->toString();
        $sortMap = [
            'status_name' => 'status',
            'execution_type_name' => 'execution_type',
            'items_count' => 'items_count',
        ];
        if (isset($sortMap[$requestedSort])) {
            $request->merge(['sortBy' => $sortMap[$requestedSort]]);
        }
        $this->setSortAndOrderBy($model, $request);
        if ($requestedSort !== '' && isset($sortMap[$requestedSort])) {
            $this->data['sortBy'] = $requestedSort;
            $query->orderBy($sortMap[$requestedSort], $this->data['orderBy']);
            $query->orderBy('id', $this->data['orderBy']);
        } else {
            $this->applyStableSorting($query);
        }

        $this->data['orders'] = $query->paginate($this->data['per_page'])->withQueryString();
        $this->data['nav'] = $nav;

        return view('production_orders.index', $this->data);
    }

    public function create(Request $request, FieldAccessService $fieldAccess): View
    {
        return $this->orderView($request, $fieldAccess);
    }

    public function show(
        Request $request,
        ProductionOrder $productionOrder,
        FieldAccessService $fieldAccess,
    ): View {
        return $this->orderView(
            $request,
            $fieldAccess,
            $productionOrder->load([
                'manager',
                'items.catalogItem.imageFile',
                'deliveries.driver',
                'installations.brigadier',
                'activities.user',
            ]),
        );
    }

    public function store(
        SaveProductionOrderRequest $request,
        FieldAccessService $fieldAccess,
        ProductionOrderService $service,
    ): RedirectResponse {
        $validated = $request->validated();
        $items = $validated['items'];
        $fields = array_keys(config('access.schedule-orders.fields', []));
        $payload = $fieldAccess->filterValidatedPayload(
            $request->user(),
            'schedule-orders',
            Arr::only($validated, $fields),
        );
        $payload['items'] = $items;

        $order = $service->create($payload, $request->user());

        return redirect()->route('schedule.orders.show', $this->withNav(
            ['productionOrder' => $order],
            $this->resolveNavToken($request),
        ))->with('success', 'Заказ создан.');
    }

    public function update(
        SaveProductionOrderRequest $request,
        ProductionOrder $productionOrder,
        FieldAccessService $fieldAccess,
        ProductionOrderService $service,
    ): RedirectResponse {
        $validated = $request->validated();
        $fields = array_keys(config('access.schedule-orders.fields', []));
        $payload = $fieldAccess->filterValidatedPayload(
            $request->user(),
            'schedule-orders',
            Arr::only($validated, $fields),
        );
        $canManageItems = $request->user()->hasPermission('schedule-orders.items.manage');
        $editableItemFields = array_values(array_filter(
            ['factory_number', 'manufacture_date'],
            fn (string $field): bool => $request->user()->canUpdateField('schedule-orders', $field),
        ));
        if (($canManageItems || $editableItemFields !== []) && isset($validated['items'])) {
            $payload['items'] = $validated['items'];
        }

        $service->update(
            $productionOrder,
            $payload,
            $request->user(),
            $canManageItems,
            $editableItemFields,
        );

        return redirect()->route('schedule.orders.show', $this->withNav(
            ['productionOrder' => $productionOrder],
            $this->resolveNavToken($request),
        ))->with('success', 'Заказ обновлён.');
    }

    public function destroy(Request $request, ProductionOrder $productionOrder): RedirectResponse
    {
        $productionOrder->delete();

        return redirect()
            ->route('schedule.orders', session('gp_schedule_orders'))
            ->with('success', 'Заказ удалён.');
    }

    public function searchCatalogItems(Request $request): JsonResponse
    {
        $validated = $request->validate([
            'q' => ['nullable', 'string', 'max:200'],
        ]);
        $search = trim((string) ($validated['q'] ?? ''));
        if (mb_strlen($search) < 2) {
            return response()->json([]);
        }

        $items = CommonCatalogItem::query()
            ->where(function ($query) use ($search): void {
                $query
                    ->where('article', 'like', "%{$search}%")
                    ->orWhere('calculator_name', 'like', "%{$search}%")
                    ->orWhere('print_name', 'like', "%{$search}%");
            })
            ->orderBy('article')
            ->limit(50)
            ->get(['id', 'article', 'calculator_name', 'print_name'])
            ->map(static fn (CommonCatalogItem $item): array => [
                'id' => $item->id,
                'label' => $item->article.' — '.($item->calculator_name ?: $item->print_name ?: 'Без наименования'),
            ])
            ->values();

        return response()->json($items);
    }

    private function orderView(
        Request $request,
        FieldAccessService $fieldAccess,
        ?ProductionOrder $order = null,
    ): View {
        $nav = $this->resolveNavToken($request);
        $this->rememberNavigation($request, $nav);
        $fields = array_keys(config('access.schedule-orders.fields', []));
        $catalogItemIds = collect($order?->items ?? [])
            ->pluck('common_catalog_item_id')
            ->merge(collect($request->old('items', []))->pluck('common_catalog_item_id'))
            ->filter()
            ->unique()
            ->values();

        return view('production_orders.edit', [
            'active' => 'schedule_orders',
            'title' => $order ? 'Заказ '.$order->order_number : 'Новый заказ',
            'order' => $order,
            'nav' => $nav,
            'back_url' => $this->navigationBackUrl(
                $request,
                $nav,
                route('schedule.orders', session('gp_schedule_orders')),
            ),
            'readableFields' => array_fill_keys(
                $fieldAccess->filterReadableFields($request->user(), 'schedule-orders', $fields),
                true,
            ),
            'writableFields' => collect($fields)->mapWithKeys(fn (string $field): array => [
                $field => $request->user()->canUpdateField('schedule-orders', $field),
            ])->all(),
            'canManageItems' => $request->user()->hasPermission('schedule-orders.items.manage'),
            'canManageDeliveries' => $request->user()->hasPermission('schedule-orders.deliveries.manage'),
            'canManageInstallations' => $request->user()->hasPermission('schedule-orders.installations.manage'),
            'canUpdateFactoryNumber' => $request->user()->canUpdateField('schedule-orders', 'factory_number'),
            'canUpdateManufactureDate' => $request->user()->canUpdateField('schedule-orders', 'manufacture_date'),
            'managers' => User::query()
                ->where('role', Role::MANAGER)
                ->orderBy('name')
                ->pluck('name', 'id'),
            'drivers' => User::query()
                ->whereIn('role', [Role::DRIVER, Role::BRIGADIER])
                ->orderBy('name')
                ->pluck('name', 'id'),
            'brigadiers' => User::query()
                ->where('role', Role::BRIGADIER)
                ->orderBy('name')
                ->pluck('name', 'id'),
            'catalogItems' => CommonCatalogItem::query()
                ->whereKey($catalogItemIds)
                ->get(['id', 'article', 'calculator_name', 'print_name'])
                ->keyBy('id'),
            'statuses' => ProductionOrderStatus::options(),
            'executionTypes' => ProductionOrderExecutionType::options(),
        ]);
    }
}