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118 lines
2.7 KiB
118 lines
2.7 KiB
/*
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* GodoOS - A lightweight cloud desktop
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* Copyright (C) 2024 https://godoos.com
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package sys
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import (
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"encoding/json"
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"fmt"
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"godo/localchat"
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"net/http"
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"sync"
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"time"
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)
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// 定义消息结构体
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type Message struct {
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Type string `json:"type"`
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Data interface{} `json:"data"`
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}
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// 定义一个结构体来保存客户端连接
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type client struct {
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conn http.ResponseWriter
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}
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var clients = make(map[*client]bool)
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var mutex sync.Mutex
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// 处理客户端连接
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func HandleSystemEvents(w http.ResponseWriter, r *http.Request) {
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// 设置响应头
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w.Header().Set("Content-Type", "text/event-stream")
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w.Header().Set("Cache-Control", "no-cache")
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w.Header().Set("Connection", "keep-alive")
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// 创建客户端连接对象
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c := &client{conn: w}
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// 添加客户端到列表
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mutex.Lock()
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clients[c] = true
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mutex.Unlock()
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// 发送初始消息
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updateInfo, err := GetUpdateInfo()
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if err == nil {
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SendToClient(c, Message{
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Type: "update",
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Data: updateInfo,
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})
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}
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// 监听客户端关闭
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defer func() {
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mutex.Lock()
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delete(clients, c)
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mutex.Unlock()
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}()
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// 使用定时器轮询客户端请求
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ticker := time.NewTicker(1 * time.Second)
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defer ticker.Stop()
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for range ticker.C {
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// 检查客户端是否已断开连接
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if r.Context().Err() != nil {
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return
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}
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userMessages := localchat.GetMessages()
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msg := Message{
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Type: "localchat",
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Data: userMessages,
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}
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Broadcast(msg)
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localchat.ClearAllUserMessages()
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}
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}
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// 向客户端发送消息
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func SendToClient(c *client, msg Message) {
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jsonMsg, err := json.Marshal(msg)
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if err != nil {
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fmt.Println("Error marshaling JSON:", err)
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return
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}
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fmt.Fprintf(c.conn, "data: %s\n\n", jsonMsg)
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c.conn.(http.Flusher).Flush()
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}
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// 广播消息给所有客户端
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func Broadcast(msg Message) {
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mutex.Lock()
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defer mutex.Unlock()
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for c := range clients {
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SendToClient(c, msg)
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}
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}
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// 每隔一段时间广播一条消息
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func SendMessagePeriodically(msg Message) {
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ticker := time.NewTicker(1 * time.Second)
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for range ticker.C {
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Broadcast(msg)
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}
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}
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