<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Modules\SystemUser\Models\SysUserModel;

/**
 * 门店压回筐记录模型（周转筐/托盘跟账单走，生成账单时写入完整快照）
 *
 * 数量正数=压筐（附加金额），负数=回筐（抵扣金额）；数量为 0 不写记录
 */
class ContainerReturnModel extends Model
{
    use HasFactory;

    protected $table = 'container_return';
    protected $primaryKey = 'id';

    protected $fillable = [
        'store_id',
        'bill_id',
        'box_num',
        'tray_num',
        'box_price',
        'tray_price',
        'amount',
        'operator_id',
    ];

    protected $casts = [
        'store_id' => 'integer',
        'bill_id' => 'integer',
        'box_num' => 'integer',
        'tray_num' => 'integer',
        'box_price' => 'decimal:2',
        'tray_price' => 'decimal:2',
        'amount' => 'decimal:2',
        'operator_id' => 'integer',
        'created_at' => 'datetime:Y-m-d H:i:s',
    ];

    /**
     * 所属门店（含软删除门店，保证历史记录可见）
     */
    public function store(): BelongsTo
    {
        return $this->belongsTo(StoreModel::class, 'store_id', 'id')->withTrashed();
    }

    /**
     * 关联账单
     */
    public function bill(): BelongsTo
    {
        return $this->belongsTo(BillModel::class, 'bill_id', 'id');
    }

    /**
     * 操作人（后台系统用户）
     */
    public function operator(): BelongsTo
    {
        return $this->belongsTo(SysUserModel::class, 'operator_id', 'id');
    }
}