<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ShipmentItem extends Model
{
    use HasFactory;

    protected $fillable = [
        'shipment_id',
    'order_id',

    // OLD fields (keep them if old data exists)
    'order_ctn',
    'order_qty',
    'order_ttl_qty',
    'order_ttl_amount',
    'order_ttl_kg',

    // NEW fields (added for correct shipments)
    'ctn',
    'qty',
    'ttl_qty',

    'cbm',
    'ttl_cbm',

    'kg',
    'ttl_kg',

    'ttl_amount',
    ];

    // ---------------------------
    // RELATIONSHIPS
    // ---------------------------

    public function shipment()
    {
        return $this->belongsTo(Shipment::class);
    }

    public function order()
    {
        return $this->belongsTo(Order::class);
    }

    // Helper: return order data with fallback to snapshot
    public function getDisplayQty()
    {
        return $this->qty;
    }

    public function getDisplayAmount()
    {
        return $this->ttl_amount;
    }
}