<?php
namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class PurchaseOrder extends Model
{
    use SoftDeletes;

    protected $table = 'purchase_orders';

    protected $fillable = [
        'po_no',
        'warehouse_id',
        'supplier_id',
        'brand_id',
        'expected_arrival',
        'shipping_method',
        'freight',
        'category',
        'total_amount',
        'status',
        'remark',
        'audit_comment',
        'pushed',
        'cloud_system',
        'pushed_to_cloud',
        'pushed_at',
        'cloud_response',
    ];

    protected $casts = [
        'expected_arrival' => 'date',
        'freight' => 'decimal:2',
        'total_amount' => 'decimal:2',
        'pushed' => 'boolean',
        'pushed_to_cloud' => 'boolean',
        'pushed_at' => 'datetime',
    ];

    public function warehouse()
    {
        return $this->belongsTo(Warehouse::class);
    }

    public function supplier()
    {
        return $this->belongsTo(Supplier::class);
    }

    public function brand()
    {
        return $this->belongsTo(Brand::class);
    }

    public function items()
    {
        return $this->hasMany(PurchaseOrderItem::class);
    }

    public function receivingOrders()
    {
        return $this->hasMany(ReceivingOrder::class, 'po_id');
    }

    public function getStatusLabelAttribute()
    {
        $labels = [
            'draft' => '草稿',
            'under_review' => '待审核',
            'approved' => '已审核',
            'rejected' => '已驳回',
            'completed' => '已完成',
        ];
        return $labels[$this->status] ?? $this->status;
    }
}