<?php

namespace Modules\FinancialManagement\Models;

use App\Traits\HasPublicIdentifier;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class InvoiceLineItem extends Model
{
    use HasPublicIdentifier;

    protected $table = 'financial_invoice_line_items';

    protected $fillable = [
        'invoice_id', 'description', 'quantity', 'unit_price', 'total', 'sort_order',
    ];

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

    public function invoice(): BelongsTo
    {
        return $this->belongsTo(FinancialInvoice::class, 'invoice_id');
    }

    protected static function booted(): void
    {
        static::saving(function (self $item) {
            $item->total = (float) $item->quantity * (float) $item->unit_price;
        });
    }
}