forked from schollz/cowyo
/
websockets.go
65 lines (57 loc) · 1.07 KB
/
websockets.go
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package main
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"github.com/gorilla/websocket"
)
var wsupgrader = websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
}
func wshandler(w http.ResponseWriter, r *http.Request) {
conn, err := wsupgrader.Upgrade(w, r, nil)
if err != nil {
fmt.Println("Failed to set websocket upgrade: %+v", err)
return
}
for {
t, msg, err := conn.ReadMessage()
if err != nil {
break
}
type Message struct {
TextData string
Title string
UpdateServer bool
UpdateClient bool
}
var m Message
err = json.Unmarshal(msg, &m)
if err != nil {
panic(err)
}
var p WikiData
err = p.load(strings.ToLower(m.Title))
if err != nil {
panic(err)
}
if m.UpdateServer {
err := p.save(m.TextData)
if err != nil {
panic(err)
}
m.TextData = "saved"
}
if m.UpdateClient {
m.UpdateClient = len(m.TextData) != len(p.CurrentText)
m.TextData = p.CurrentText
}
newMsg, err := json.Marshal(m)
if err != nil {
panic(err)
}
conn.WriteMessage(t, newMsg)
}
}