<?php

namespace App\Module\Farm\Events;

use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

/**
 * 土地状态变更事件
 *
 * 当土地状态发生变化时触发此事件
 */
class LandStatusChangedEvent
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    /**
     * 用户ID
     *
     * @var int
     */
    public $userId;

    /**
     * 土地ID
     *
     * @var int
     */
    public $landId;

    /**
     * 旧状态
     *
     * @var int
     */
    public $oldStatus;

    /**
     * 新状态
     *
     * @var int
     */
    public $newStatus;

    /**
     * 创建一个新的事件实例
     *
     * @param int $userId 用户ID
     * @param int $landId 土地ID
     * @param int $oldStatus 旧状态
     * @param int $newStatus 新状态
     * @return void
     */
    public function __construct(int $userId, int $landId, int $oldStatus, int $newStatus)
    {
        $this->userId = $userId;
        $this->landId = $landId;
        $this->oldStatus = $oldStatus;
        $this->newStatus = $newStatus;
    }
}