<?php

namespace App\Models;

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

/**
 * 财务对账模型（公布金额 vs 实际金额 vs 差额，按品类/供应商筛选）
 */
class ReconciliationModel extends Model
{
    /** 状态：草稿 */
    public const STATUS_DRAFT = 0;
    /** 状态：对账中 */
    public const STATUS_WORKING = 1;
    /** 状态：已结算 */
    public const STATUS_SETTLED = 2;

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

    protected $fillable = [
        'recon_no',
        'title',
        'period_start',
        'period_end',
        'category_id',
        'supplier_id',
        'publish_amount',
        'actual_amount',
        'diff_amount',
        'status',
        'operator_id',
        'remark',
    ];

    protected $casts = [
        'period_start' => 'date:Y-m-d',
        'period_end' => 'date:Y-m-d',
        'category_id' => 'integer',
        'supplier_id' => 'integer',
        'publish_amount' => 'decimal:2',
        'actual_amount' => 'decimal:2',
        'diff_amount' => 'decimal:2',
        'status' => 'integer',
        'operator_id' => 'integer',
    ];

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

    /**
     * 对账明细
     */
    public function items(): HasMany
    {
        return $this->hasMany(ReconciliationItemModel::class, 'recon_id', 'id')->orderBy('sort');
    }

    /**
     * 结算表
     */
    public function settlements(): HasMany
    {
        return $this->hasMany(SettlementModel::class, 'recon_id', 'id');
    }
}