59 lines
1.4 KiB
PHP
59 lines
1.4 KiB
PHP
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<?php
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namespace App\Cache;
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use App\Cache\Repository\HashRedis;
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/**
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* 聊天最新消息 - 缓存助手
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*
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* @package App\Cache
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*/
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class LastMessage extends HashRedis
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{
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public $name = 'last-message';
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/**
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* 保存最后一条缓存信息
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*
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* @param int $type 聊天类型[1:私信;2:群聊;]
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* @param int $sender 发送者ID
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* @param int $receive 接收者ID
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* @param array $message
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*/
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public function save(int $type, int $sender, int $receive, array $message)
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{
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$this->add($this->flag($type, $sender, $receive), json_encode($message));
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}
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/**
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* 读取最后一条缓存信息
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*
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* @param int $type 聊天类型[1:私信;2:群聊;3:机器人;]
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* @param int $sender 发送者ID
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* @param int $receive 接收者ID
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* @return array
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*/
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public function read(int $type, int $sender, int $receive)
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{
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$message = $this->get($this->flag($type, $sender, $receive));
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return $message ? json_decode($message, true) : [];
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}
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/**
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* 获取 Hash 成员 key
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*
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* @return string
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*/
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public function flag(int $type, int $sender, int $receive)
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{
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// 群聊信息(非私信)，发送者ID重置为零
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if ($type == 2) $sender = 0;
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[$sender, $receive] = $sender <= $receive ? [$sender, $receive] : [$receive, $sender];
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return sprintf("%s_%s_%s", $type, $sender, $receive);
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}
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}
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