<?php

namespace App\Models;

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

/**
 * 结算表模型（对账结算按门店聚合生成，可导出存档）
 */
class SettlementModel extends Model
{
    /** 状态：待结算 */
    public const STATUS_PENDING = 0;
    /** 状态：已结算 */
    public const STATUS_SETTLED = 1;

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

    protected $fillable = [
        'settlement_no',
        'recon_id',
        'store_id',
        'period_start',
        'period_end',
        'total_amount',
        'actual_amount',
        'diff_amount',
        'status',
        'file_path',
        'operator_id',
        'settled_at',
        'remark',
    ];

    protected $casts = [
        'recon_id' => 'integer',
        'store_id' => 'integer',
        'period_start' => 'date:Y-m-d',
        'period_end' => 'date:Y-m-d',
        'total_amount' => 'decimal:2',
        'actual_amount' => 'decimal:2',
        'diff_amount' => 'decimal:2',
        'status' => 'integer',
        'operator_id' => 'integer',
        'settled_at' => 'datetime',
    ];

    /**
     * 来源对账单
     */
    public function recon(): BelongsTo
    {
        return $this->belongsTo(ReconciliationModel::class, 'recon_id', 'id');
    }

    /**
     * 结算门店
     */
    public function store(): BelongsTo
    {
        return $this->belongsTo(StoreModel::class, 'store_id', 'id');
    }

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