<?php

namespace App\Modules\Maintenance\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use App\Modules\Maintenance\Models\SparePart;
use App\Modules\Maintenance\Traits\ResolvesBusiness;
use Illuminate\Http\Request;

class SparePartController extends Controller
{
    use ResolvesBusiness;

    public function index(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $query = SparePart::where('business_id', $business->id)
            ->with(['warehouse:id,name', 'supplier:id,name'])
            ->orderBy('name');

        if ($search = $request->get('q')) {
            $query->where(function ($q) use ($search) {
                $q->where('name', 'like', "%{$search}%")
                    ->orWhere('part_number', 'like', "%{$search}%");
            });
        }
        if ($request->boolean('low_stock')) {
            $query->whereColumn('quantity', '<=', 'min_stock');
        }

        $paginator = $query->paginate((int) $request->get('per_page', 15));

        return $this->jsonSuccess([
            'items' => $paginator->items(),
            'pagination' => [
                'total' => $paginator->total(),
                'per_page' => $paginator->perPage(),
                'current_page' => $paginator->currentPage(),
                'last_page' => $paginator->lastPage(),
            ],
        ]);
    }

    public function store(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $data = $request->validate([
            'part_number' => ['required', 'string', 'max:100'],
            'name' => ['required', 'string', 'max:255'],
            'warehouse_id' => ['nullable', 'exists:warehouses,id'],
            'supplier_id' => ['nullable', 'exists:suppliers,id'],
            'product_id' => ['nullable', 'exists:products,id'],
            'quantity' => ['sometimes', 'numeric', 'min:0'],
            'min_stock' => ['sometimes', 'numeric', 'min:0'],
            'max_stock' => ['nullable', 'numeric', 'min:0'],
            'purchase_price' => ['sometimes', 'integer', 'min:0'],
            'unit' => ['nullable', 'string'],
            'notes' => ['nullable', 'string'],
        ]);

        $part = SparePart::create(array_merge($data, [
            'business_id' => $business->id,
        ]));

        return $this->jsonSuccess($part, 'قطعه یدکی ایجاد شد.', 201);
    }

    public function update(Request $request, SparePart $sparePart)
    {
        if (! $this->ensureBusinessOwnership($request, $sparePart->business_id)) {
            return $this->jsonError('دسترسی ندارید.', 403);
        }

        $data = $request->validate([
            'part_number' => ['sometimes', 'string', 'max:100'],
            'name' => ['sometimes', 'string', 'max:255'],
            'warehouse_id' => ['nullable', 'exists:warehouses,id'],
            'supplier_id' => ['nullable', 'exists:suppliers,id'],
            'quantity' => ['sometimes', 'numeric', 'min:0'],
            'min_stock' => ['sometimes', 'numeric', 'min:0'],
            'max_stock' => ['nullable', 'numeric', 'min:0'],
            'purchase_price' => ['sometimes', 'integer', 'min:0'],
            'unit' => ['nullable', 'string'],
            'notes' => ['nullable', 'string'],
        ]);

        $sparePart->update($data);

        return $this->jsonSuccess($sparePart, 'قطعه یدکی به‌روزرسانی شد.');
    }

    public function destroy(Request $request, SparePart $sparePart)
    {
        if (! $this->ensureBusinessOwnership($request, $sparePart->business_id)) {
            return $this->jsonError('دسترسی ندارید.', 403);
        }

        $sparePart->delete();

        return $this->jsonSuccess(null, 'قطعه یدکی حذف شد.');
    }
}