/
server.go
97 lines (88 loc) · 2.06 KB
/
server.go
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package server
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"github.com/bspaans/bleep/controller"
"github.com/bspaans/bleep/ui"
"github.com/gorilla/websocket"
)
type Server struct {
Controller *controller.Controller
Clients []*websocket.Conn
}
func NewServer() *Server {
return &Server{}
}
func (s *Server) Start(ctrl *controller.Controller) *Server {
addr := "localhost:10000"
fmt.Println("Starting web server on", addr)
s.Controller = ctrl
http.HandleFunc("/ws", s.Websocket)
http.HandleFunc("/bleep.js", s.serveFile("ui/web/bleep.js", "text/javascript"))
http.HandleFunc("/", s.serveFile("ui/web/index.html", "text/html"))
go http.ListenAndServe(addr, nil)
return s
}
func (s *Server) Websocket(w http.ResponseWriter, r *http.Request) {
var upgrader = websocket.Upgrader{} // use default options
upgrader.CheckOrigin = func(r *http.Request) bool {
fmt.Println(r)
return true
}
c, err := upgrader.Upgrade(w, r, nil)
if err != nil {
log.Print("upgrade:", err)
return
}
s.Clients = append(s.Clients, c)
defer func() {
// Remove from clients
ix := -1
for i, client := range s.Clients {
if client == c {
ix = i
}
}
s.Clients[ix] = s.Clients[len(s.Clients)-1]
s.Clients = s.Clients[:len(s.Clients)-1]
c.Close()
}()
for {
_, message, err := c.ReadMessage()
if err == nil {
var msg Message
if err := json.Unmarshal(message, &msg); err == nil {
msg.Handle(s.Controller, c)
} else {
log.Println("unmarshal error", err)
}
} else {
log.Println("read error:", err)
break
}
}
}
func (s *Server) Broadcast(msg *Message) {
for _, client := range s.Clients {
msg.Send(client)
}
}
func (s *Server) HandleEvent(ev *ui.UIEvent) {
if ev.Type == ui.ForceReloadEvent {
msg := NewMessage(ForceReload, "")
s.Broadcast(msg)
}
}
func (s *Server) serveFile(file, contentType string) http.HandlerFunc {
return func(rw http.ResponseWriter, r *http.Request) {
bytes, err := ioutil.ReadFile(file)
if err != nil {
return
}
rw.Header().Set("Content-Type", contentType)
rw.Write(bytes)
}
}