70 lines
1.7 KiB
PHP
70 lines
1.7 KiB
PHP
<?php
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namespace app\models\chat;
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use think\Model;
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/**
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* 聊天消息模型
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* Class ChatMessage
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* @package app\models\chat
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*/
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class ChatMessage extends Model
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{
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protected $table = 'cg_chat_message';
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protected $pk = 'id';
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protected $autoWriteTimestamp = false;
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// 发送者类型
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const SENDER_USER = 1; // 用户
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const SENDER_ADMIN = 2; // 客服
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// 消息类型
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const MSG_TYPE_TEXT = 1; // 文字
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const MSG_TYPE_IMAGE = 2; // 图片
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// 消息状态
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const STATUS_PENDING = 0; // 待发送
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const STATUS_SENT = 1; // 已发送
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const STATUS_DELIVERED = 2; // 已送达
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const STATUS_READ = 3; // 已读
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const STATUS_FAILED = 4; // 发送失败
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/**
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* 获取会话消息列表
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*/
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public static function getBySessionId($sessionId, $limit = 50, $lastId = 0)
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{
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$query = self::where('session_id', $sessionId);
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if ($lastId > 0) {
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$query->where('id', '<', $lastId);
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}
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return $query->order('id', 'desc')
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->limit($limit)
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->select()
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->toArray();
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}
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/**
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* 获取会话未读消息
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*/
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public static function getUnreadBySessionId($sessionId, $senderType, $limit = 50)
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{
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return self::where('session_id', $sessionId)
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->where('sender_type', '<>', $senderType)
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->where('status', '<', self::STATUS_READ)
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->order('id', 'asc')
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->limit($limit)
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->select()
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->toArray();
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}
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/**
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* 检查消息ID是否存在(幂等性)
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*/
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public static function existsByMsgId($msgId)
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{
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return self::where('msg_id', $msgId)->count() > 0;
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}
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}
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