1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
package main
import (
"context"
"encoding/json"
"fmt"
"html/template"
"log"
"net/http"
"github.com/google/uuid"
"nhooyr.io/websocket"
)
var wrms = NewWrms()
func landingPage(w http.ResponseWriter, r *http.Request) {
if _, err := r.Cookie("UUID"); err != nil {
http.SetCookie(w, &http.Cookie{Name: "UUID", Value: uuid.NewString()})
}
t, err := template.ParseFiles("web/client.html")
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
t.Execute(w, "")
}
func searchHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Searching for")
}
func genericVoteHandler(w http.ResponseWriter, r *http.Request, vote string) {
uuidCookie, err := r.Cookie("UUID")
if err != nil {
http.Error(w, "No connection ID cookie set", http.StatusUnauthorized)
return
}
connId := uuidCookie.Value
songId := r.URL.Query().Get("song")
log.Println("%s song %s via url %s", vote, songId, r.URL)
wrms.AdjustSongWeight(connId, songId, vote)
}
func upHandler(w http.ResponseWriter, r *http.Request) {
genericVoteHandler(w, r, "up")
}
func downHandler(w http.ResponseWriter, r *http.Request) {
genericVoteHandler(w, r, "down")
}
func unvoteHandler(w http.ResponseWriter, r *http.Request) {
genericVoteHandler(w, r, "unvote")
}
func addHandler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Added")
}
func playPauseHandler(w http.ResponseWriter, r *http.Request) {
wrms.PlayPause()
}
func wsEndpoint(w http.ResponseWriter, r *http.Request) {
c, err := websocket.Accept(w, r, nil)
if err != nil {
log.Println("%v", err)
return
}
ctx, cancel := context.WithCancel(r.Context())
ctx = c.CloseRead(ctx)
uuidCookie, err := r.Cookie("UUID")
if err != nil {
log.Fatal("websocket connection has no set UUID cookie")
}
id, err := uuid.Parse(uuidCookie.Value)
if err != nil {
log.Fatal("Invalid UUID set in cookie")
}
defer func() {
log.Println("cancel context of connection", id)
cancel()
}()
conn := Connection{id, make(chan Event), c}
wrms.Connections = append(wrms.Connections, conn)
log.Println("New websocket connection with id", id)
initialCmds := [][]byte{}
if wrms.Playing {
data, err := json.Marshal(Event{"play", []Song{*wrms.CurrentSong}})
if err != nil {
log.Println(err)
return
}
initialCmds = append(initialCmds, data)
}
data, err := json.Marshal(Event{"add", wrms.Songs})
if err != nil {
log.Println(err)
return
}
initialCmds = append(initialCmds, data)
for _, data := range initialCmds {
log.Println("Sending initial cmd", string(data))
err = c.Write(ctx, websocket.MessageText, data)
if err != nil {
log.Println(err)
return
}
}
for ev := range conn.Events {
data, err := json.Marshal(ev)
if err != nil {
log.Println(err)
return
}
log.Println(fmt.Sprintf("Sending ev %s to %s", string(data), id))
err = c.Write(ctx, websocket.MessageText, data)
if err != nil {
log.Println(err)
return
}
}
}
func setupRoutes() {
http.HandleFunc("/", landingPage)
http.HandleFunc("/search", searchHandler)
http.HandleFunc("/up", upHandler)
http.HandleFunc("/down", downHandler)
http.HandleFunc("/unvote", unvoteHandler)
http.HandleFunc("/add", addHandler)
http.HandleFunc("/playpause", playPauseHandler)
http.HandleFunc("/ws", wsEndpoint)
}
func main() {
setupRoutes()
wrms.AddSong(NewSong("Lala", "SNFMT", "local"))
wrms.AddSong(NewSong("Hobelbank", "MC Wankwichtel", "local"))
log.Println(wrms)
defer wrms.Close()
log.Fatal(http.ListenAndServe(":8080", nil))
}
|
