<?php

namespace App\Modules\Maintenance\Services;

use App\Business;
use App\User;
use App\Modules\Maintenance\Models\SparePart;
use App\Modules\Maintenance\Models\SparePartConsumption;
use App\Modules\Maintenance\Models\WorkOrder;
use App\Modules\Maintenance\Models\WorkOrderPart;
use Illuminate\Support\Facades\DB;
use InvalidArgumentException;

class SparePartService
{
    public function consumeForWorkOrder(
        Business $business,
        WorkOrder $workOrder,
        int $sparePartId,
        float $quantity,
        ?User $user = null
    ): SparePartConsumption {
        return DB::transaction(function () use ($business, $workOrder, $sparePartId, $quantity, $user) {
            $part = SparePart::where('business_id', $business->id)->lockForUpdate()->findOrFail($sparePartId);

            if ($part->quantity < $quantity) {
                throw new InvalidArgumentException('موجودی قطعه یدکی کافی نیست.');
            }

            $unitCost = (int) $part->purchase_price;
            $totalCost = (int) ($unitCost * $quantity);

            $part->decrement('quantity', $quantity);

            WorkOrderPart::create([
                'business_id' => $business->id,
                'work_order_id' => $workOrder->id,
                'spare_part_id' => $part->id,
                'quantity' => $quantity,
                'unit_cost' => $unitCost,
                'total_cost' => $totalCost,
            ]);

            $consumption = SparePartConsumption::create([
                'business_id' => $business->id,
                'spare_part_id' => $part->id,
                'work_order_id' => $workOrder->id,
                'equipment_id' => $workOrder->equipment_id,
                'quantity' => $quantity,
                'unit_cost' => $unitCost,
                'notes' => null,
                'consumed_by' => $user?->id,
            ]);

            $workOrder->increment('cost', $totalCost);

            MaintenanceActivityService::logEquipmentHistory(
                $business,
                $workOrder->equipment_id,
                'spare_part',
                'مصرف قطعه یدکی',
                "قطعه «{$part->name}» به مقدار {$quantity} مصرف شد.",
                $user,
                $totalCost,
                WorkOrder::class,
                $workOrder->id
            );

            return $consumption;
        });
    }
}