<?php

namespace Modules\IndustrialEngineering\Models;

use App\User;
use Illuminate\Database\Eloquent\Model;

class EngineeringChangeOrder extends Model
{
    use BelongsToBusiness;

    protected $table = 'ie_engineering_change_orders';

    protected $guarded = ['id'];

    protected $casts = [
        'impact_cost_delta' => 'decimal:4',
        'effective_at' => 'datetime',
    ];

    public function lineRevision()
    {
        return $this->belongsTo(LineRevision::class, 'line_revision_id');
    }

    public function bom()
    {
        return $this->belongsTo(Bom::class, 'bom_id');
    }

    public function requestedBy()
    {
        return $this->belongsTo(User::class, 'requested_by');
    }

    public function approvedBy()
    {
        return $this->belongsTo(User::class, 'approved_by');
    }

    public function effectiveCode(): string
    {
        return $this->eco_number ?: ($this->auto_code ?: 'ECO-'.$this->id);
    }
}