即时消息接口完结

app/chat/model/ChatMessage.php

@@ -2,7 +2,51 @@
 namespace app\chat\model;
 
 
+use support\Redis;
+use support\think\Db;
+
 class ChatMessage extends BaseModel
 {
     public $tabla_name = 'chat_message';
+
+    public static function getconverlist($uid, $user_type)
+    {
+        // 获取所有会话ID
+        $sessionIds = Db::name('chat_message')->where('from_id', $uid)->WhereOr('to_id', $uid)
+            ->group('session_id')->column('session_id');
+        $data = [];
+        $i = 0;
+        foreach ($sessionIds as $k => $session_id) {
+            // 未读计数
+            $unreadCount = Db::name('chat_unread_count')->where(['user_id' => $uid, 'session_id' => $session_id])->value('count')?:0;
+            $data[$i]['unread_count'] = $unreadCount;
+            // 最后一条消息
+            $lastMsg = Db::name('chat_message')
+                ->where('session_id', $session_id)
+                ->order('send_time', 'desc')
+                ->find();
+            if($lastMsg) {
+                $chat_user = Db::name('chat_user')->where(['user_id' => $lastMsg['from_id']])->field('nick_name,avatar')->find();
+                // 如果是自己发的不显示发送人
+                if($lastMsg['from_id'] == $uid) {
+                    $data[$i]['msg'] = $lastMsg['content'];
+                }else {
+                    // 如果是别人发的显示昵称
+                    $data[$i]['msg'] = $chat_user['nick_name'] . '：' . $lastMsg['content'];
+                }
+                $data[$i]['avatar'] = $chat_user['avatar'];
+                $data[$i]['chat_type'] = $lastMsg['chat_type'];
+            }else {
+                $data[$i][] = '';
+            }
+            $data[$i]['send_time'] = formatWeChatTime($lastMsg['send_time']);
+            $data[$i]['session_id'] = $session_id;
+            $i ++;
+        }
+        if(Redis::set('usermsg:list:' . $user_type . ':' . $uid, json_encode($data))) {
+            return $data;
+        }
+    }
+
+
 }