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chatroom/app/Events/FriendRemoved.php
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<?php
/**
* 文件功能:好友删除广播事件
*
* 当用户 A 删除用户 B 为好友时,向 B 的私有频道广播此事件,
* B 的客户端收到后展示弹窗通知。
* 携带 hadAddedBack 字段:若 B 之前也把 A 加为好友(互相好友)则为 true,
* 前端可提示 B "是否同步移除对方"。
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*
* @author ChatRoom Laravel
*
* @version 1.0.0
*/
namespace App\Events;
use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;
class FriendRemoved implements ShouldBroadcast
{
use Dispatchable, InteractsWithSockets, SerializesModels;
/**
* 构造好友删除事件。
*
* @param string $fromUsername 发起删除的用户名(A)
* @param string $toUsername 被删除的用户名(B,接收通知方)
* @param bool $hadAddedBack B 之前是否也将 A 加为好友(互相好友=true)
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*/
public function __construct(
public readonly string $fromUsername,
public readonly string $toUsername,
public readonly bool $hadAddedBack = false,
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) {}
/**
* 广播到被删除用户的私有频道,仅本人可见。
*/
public function broadcastOn(): Channel
{
return new PrivateChannel('user.'.$this->toUsername);
}
/**
* 广播负载:包含发起人信息和之前互相好友状态,供前端弹窗使用。
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*
* @return array<string, mixed>
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*/
public function broadcastWith(): array
{
return [
'from_username' => $this->fromUsername,
'to_username' => $this->toUsername,
'type' => 'friend_removed',
'had_added_back' => $this->hadAddedBack,
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];
}
}