120 lines
1.9 KiB
Go
120 lines
1.9 KiB
Go
package chat
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import (
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"encoding/json"
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"fmt"
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"time"
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"golang.org/x/net/websocket"
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)
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type user struct {
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name string
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admin bool
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send chan Message
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chatter chan string
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quit chan interface{}
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enc encoder
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dec decoder
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}
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type userInfo struct {
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Name string `json:"name"`
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}
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func NewUser(ws *websocket.Conn, chatter chan string) *user {
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return &user{
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send: make(chan Message),
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chatter: chatter,
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quit: make(chan interface{}),
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enc: json.NewEncoder(ws),
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dec: json.NewDecoder(ws),
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}
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}
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func (u *user) sendSpin() {
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for {
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select {
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case things := <-u.send:
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err := u.enc.Encode(things)
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if err != nil {
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logs.Error("%+v", err)
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return
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}
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case <-u.quit:
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return
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}
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}
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}
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func (u *user) Send() {
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logs.Debug("%s: Send Start", u.name)
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u.sendSpin()
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logs.Debug("%s: Send close", u.name)
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}
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func (u *user) Recv() {
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logs.Debug("%s: Recv start", u.name)
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var msg string
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for {
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err := u.dec.Decode(&msg)
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if err != nil {
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logs.Error("%+v", err)
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close(u.quit)
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break
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}
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payload := fmt.Sprintf("%s | %s: %s", time.Now().Format("06-01-02 15:04"), u.name, msg)
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logs.Debug(payload)
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u.chatter <- payload
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}
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logs.Debug("%s: Recv close", u.name)
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}
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type Message interface{}
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type encoder interface {
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Encode(v interface{}) error
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}
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type decoder interface {
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Decode(v interface{}) error
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}
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func (c *Chat) userLoop(ws *websocket.Conn) {
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logs.Debug("client connect")
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user := NewUser(ws, c.chatter)
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sn := userInfo{}
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for {
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user.dec.Decode(&sn)
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user.name = sn.Name
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if _, ok := c.users[sn.Name]; ok {
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msg := fmt.Sprintf("already got a user by this name: %q", sn.Name)
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logs.Error(msg)
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user.enc.Encode(NewFailure(msg))
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} else {
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break
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}
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}
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user.enc.Encode(success{true})
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c.ulock.Lock()
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c.users[user.name] = user
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c.ulock.Unlock()
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go user.Send()
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user.Recv()
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c.ulock.Lock()
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delete(c.users, user.name)
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c.ulock.Unlock()
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logs.Debug("client disconnected: %+v", user)
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}
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