<?php

namespace Modules\MaterialLogistics\Models;
use Modules\MasterData\Models\Material;
use Modules\MasterData\Models\MaterialGroup;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class PurchaseOrderItem extends Model
{
    protected $fillable = [
        'purchase_order_id', 'material_id', 'material_requisition_item_id',
        'quantity', 'unit_cost',
    ];

    protected function casts(): array
    {
        return [
            'quantity' => 'decimal:2',
            'unit_cost' => 'decimal:2',
        ];
    }

    public function purchaseOrder(): BelongsTo
    {
        return $this->belongsTo(PurchaseOrder::class);
    }

    public function material(): BelongsTo
    {
        return $this->belongsTo(Material::class);
    }

    public function requisitionItem(): BelongsTo
    {
        return $this->belongsTo(MaterialRequisitionItem::class, 'material_requisition_item_id');
    }

    public function getLineTotalAttribute(): float
    {
        return (float) $this->quantity * (float) $this->unit_cost;
    }
}