<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * 门店订单模型（小程序下单，快照等级价；软删除，仅已取消订单可由后台删除）
 */
class StoreOrderModel extends Model
{
    use HasFactory, SoftDeletes;

    /** 状态：待接单（可被采购单生成归集、可取消） */
    public const int STATUS_PENDING = 0;
    /** 状态：已接单（已生成采购单） */
    public const int STATUS_SUMMARIZED = 1;
    /** 状态：采购中 */
    public const int STATUS_DELIVERING = 2;
    /** 状态：配送中 */
    public const int STATUS_DISTRIBUTION = 3;
    /** 状态：已完成 */
    public const int STATUS_COMPLETED = 4;
    /** 状态：已取消 */
    public const int STATUS_CANCELLED = 9;

    /** 状态中文名（后台文案/订单通知用） */
    public const array STATUS_NAMES = [
        self::STATUS_PENDING => '待接单',
        self::STATUS_SUMMARIZED => '已接单',
        self::STATUS_DELIVERING => '采购中',
        self::STATUS_DISTRIBUTION => '配送中',
        self::STATUS_COMPLETED => '已完成',
        self::STATUS_CANCELLED => '已取消',
    ];

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

    protected $fillable = [
        'order_no',
        'store_id',
        'order_date',
        'total_quantity',
        'total_weight',
        'total_amount',
        'status',
        'remark',
        'purchase_id',
        'bill_id',
    ];

    protected $casts = [
        'store_id' => 'integer',
        'purchase_id' => 'integer',
        'bill_id' => 'integer',
        'order_date' => 'date:Y-m-d',
        'total_quantity' => 'integer',
        'total_weight' => 'decimal:3',
        'total_amount' => 'decimal:2',
        'status' => 'integer',
        'created_at' => 'datetime:Y-m-d H:i:s',
    ];

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

    /**
     * 订单明细
     */
    public function items(): HasMany
    {
        return $this->hasMany(StoreOrderItemModel::class, 'order_id', 'id');
    }

    /**
     * 采购单
     */
    public function purchase(): BelongsTo
    {
        return $this->belongsTo(PurchaseOrderModel::class, 'purchase_id', 'id');
    }

    /**
     * 关联账单（采购单完成后按门店生成）
     */
    public function bill(): BelongsTo
    {
        return $this->belongsTo(BillModel::class, 'bill_id', 'id');
    }
}