build(deps): bump github.com/cenkalti/backoff/v4 from 4.1.3 to 4.2.0

Bumps [github.com/cenkalti/backoff/v4](https://github.com/cenkalti/backoff) from 4.1.3 to 4.2.0.
- [Release notes](https://github.com/cenkalti/backoff/releases)
- [Commits](https://github.com/cenkalti/backoff/compare/v4.1.3...v4.2.0)

---
updated-dependencies:
- dependency-name: github.com/cenkalti/backoff/v4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

bot/bot.go

@@ -159,6 +159,7 @@ func (b *bot) ListenAndServe() {
 	}()
 	<-stop
 	b.DefaultConnector().Shutdown()
+	b.Receive(b.DefaultConnector(), Shutdown, msg.Message{})
 }
 
 func (b *bot) RegisterWeb(r http.Handler, root string) {

bot/interfaces.go

@@ -40,6 +40,8 @@ const (
 	Delete
 	// Startup is triggered after the connector has run the Serve function
 	Startup
+	// Shutdown is triggered after an OS interrupt
+	Shutdown
 )
 
 type EphemeralID string

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/mattn/go-sqlite3 v2.0.3+incompatible
 	github.com/mmcdole/gofeed v1.1.3
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
+	github.com/nicklaw5/helix v1.25.0
 	github.com/olebedev/when v0.0.0-20190311101825-c3b538a97254
 	github.com/rs/zerolog v1.28.0
 	github.com/slack-go/slack v0.11.3
@@ -53,6 +54,7 @@ require (
 	github.com/garyburd/go-oauth v0.0.0-20180319155456-bca2e7f09a17 // indirect
 	github.com/go-stack/stack v1.8.0 // indirect
 	github.com/gobwas/glob v0.2.3 // indirect
+	github.com/golang-jwt/jwt v3.2.1+incompatible // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
 	github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 // indirect
 	github.com/golang/protobuf v1.3.1 // indirect

go.sum

@@ -76,6 +76,8 @@ github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJA
 github.com/gocolly/colly v1.2.0 h1:qRz9YAn8FIH0qzgNUw+HT9UN7wm1oF9OBAilwEWpyrI=
 github.com/gocolly/colly v1.2.0/go.mod h1:Hof5T3ZswNVsOHYmba1u03W65HDWgpV5HifSuueE0EA=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/golang-jwt/jwt v3.2.1+incompatible h1:73Z+4BJcrTC+KczS6WvTPvRGOp1WmfEP4Q1lOd9Z/+c=
+github.com/golang-jwt/jwt v3.2.1+incompatible/go.mod h1:8pz2t5EyA70fFQQSrl6XZXzqecmYZeUEB8OUGHkxJ+I=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
 github.com/golang/groupcache v0.0.0-20191027212112-611e8accdfc9 h1:uHTyIjqVhYRhLbJ8nIiOJHkEZZ+5YoOsAbD3sk82NiE=
@@ -140,6 +142,8 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 h1:Esafd1046DLD
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
+github.com/nicklaw5/helix v1.25.0 h1:Mrz537izZVsGdM3I46uGAAlslj61frgkhS/9xQqyT/M=
+github.com/nicklaw5/helix v1.25.0/go.mod h1:yvXZFapT6afIoxnAvlWiJiUMsYnoHl7tNs+t0bloAMw=
 github.com/olebedev/when v0.0.0-20190311101825-c3b538a97254 h1:JYoQR67E1vv1WGoeW8DkdFs7vrIEe/5wP+qJItd5tUE=
 github.com/olebedev/when v0.0.0-20190311101825-c3b538a97254/go.mod h1:DPucAeQGDPUzYUt+NaWw6qsF5SFapWWToxEiVDh2aV0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=

plugins/twitch/twitch.go

@@ -3,8 +3,10 @@ package twitch
 import (
 	"bytes"
 	"encoding/json"
+	"errors"
 	"fmt"
-	"io/ioutil"
+	"github.com/nicklaw5/helix"
+	"io"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -36,17 +38,24 @@ type Twitch struct {
 	irc          *IRC
 	ircLock      sync.Mutex
 	bridgeMap    map[string]string
+
+	helix *helix.Client
+	subs  map[string]bool
 }
 
 type Twitcher struct {
-	name        string
+	id     string
-	gameID      string
+	gameID string
-	isStreaming bool
+	online bool
+
+	Name string
+	Game string
+	URL  string
 }
 
-func (t Twitcher) URL() string {
+func (t Twitcher) url() string {
 	u, _ := url.Parse("https://twitch.tv/")
-	u2, _ := url.Parse(t.name)
+	u2, _ := url.Parse(t.Name)
 	return u.ResolveReference(u2).String()
 }
 
@@ -76,21 +85,13 @@ func New(b bot.Bot) *Twitch {
 		bridgeMap:  map[string]string{},
 	}
 
-	for _, ch := range p.c.GetArray("Twitch.Channels", []string{}) {
+	for _, twitcherName := range p.c.GetArray("Twitch.Users", []string{}) {
-		for _, twitcherName := range p.c.GetArray("Twitch."+ch+".Users", []string{}) {
+		twitcherName = strings.ToLower(twitcherName)
-			twitcherName = strings.ToLower(twitcherName)
+		p.twitchList[twitcherName] = &Twitcher{
-			if _, ok := p.twitchList[twitcherName]; !ok {
+			Name: twitcherName,
-				p.twitchList[twitcherName] = &Twitcher{
-					name:   twitcherName,
-					gameID: "",
-				}
-			}
 		}
-		go p.twitchChannelLoop(b.DefaultConnector(), ch)
 	}
 
-	go p.twitchAuthLoop(b.DefaultConnector())
-
 	p.register()
 	p.registerWeb()
 
@@ -99,38 +100,9 @@ func New(b bot.Bot) *Twitch {
 
 func (p *Twitch) registerWeb() {
 	r := chi.NewRouter()
-	r.HandleFunc("/{user}", p.serveStreaming)
+	r.HandleFunc("/online", p.onlineCB)
-	p.b.RegisterWeb(r, "/isstreaming")
+	r.HandleFunc("/offline", p.offlineCB)
-}
+	p.b.RegisterWeb(r, "/twitch")
-
-func (p *Twitch) serveStreaming(w http.ResponseWriter, r *http.Request) {
-	userName := strings.ToLower(chi.URLParam(r, "user"))
-	if userName == "" {
-		fmt.Fprint(w, "User not found.")
-		return
-	}
-
-	twitcher := p.twitchList[userName]
-	if twitcher == nil {
-		fmt.Fprint(w, "User not found.")
-		return
-	}
-
-	status := "NO."
-	if twitcher.gameID != "" {
-		status = "YES."
-	}
-	context := map[string]any{"Name": twitcher.name, "Status": status}
-
-	t, err := template.New("streaming").Parse(page)
-	if err != nil {
-		log.Error().Err(err).Msg("Could not parse template!")
-		return
-	}
-	err = t.Execute(w, context)
-	if err != nil {
-		log.Error().Err(err).Msg("Could not execute template!")
-	}
 }
 
 func (p *Twitch) register() {
@@ -170,11 +142,118 @@ func (p *Twitch) register() {
 			Regex:   regexp.MustCompile(`.*`),
 			Handler: p.bridgeMsg,
 		},
+		{
+			Kind: bot.Startup, IsCmd: false,
+			Regex:   regexp.MustCompile(`.*`),
+			Handler: p.startup,
+		},
+		{
+			Kind: bot.Shutdown, IsCmd: false,
+			Regex:   regexp.MustCompile(`.*`),
+			Handler: p.shutdown,
+		},
 	}
 	p.b.Register(p, bot.Help, p.help)
 	p.b.RegisterTable(p, p.tbl)
 }
 
+func (p *Twitch) shutdown(r bot.Request) bool {
+	return false
+}
+
+func (p *Twitch) startup(r bot.Request) bool {
+	var err error
+	clientID := p.c.Get("twitch.clientid", "")
+	clientSecret := p.c.Get("twitch.secret", "")
+
+	if clientID == "" || clientSecret == "" {
+		log.Info().Msg("No clientID/secret, twitch disabled")
+		return false
+	}
+
+	p.helix, err = helix.NewClient(&helix.Options{
+		ClientID:     clientID,
+		ClientSecret: clientSecret,
+	})
+	if err != nil {
+		log.Printf("Login error: %v", err)
+		return false
+	}
+
+	access, err := p.helix.RequestAppAccessToken([]string{"user:read:email"})
+	if err != nil {
+		log.Printf("Login error: %v", err)
+		return false
+	}
+
+	fmt.Printf("%+v\n", access)
+
+	// Set the access token on the client
+	p.helix.SetAppAccessToken(access.Data.AccessToken)
+
+	p.subs = map[string]bool{}
+
+	for _, t := range p.twitchList {
+		if err := p.follow(t); err != nil {
+			log.Error().Err(err).Msg("")
+		}
+	}
+
+	return false
+}
+
+func (p *Twitch) follow(twitcher *Twitcher) error {
+	if twitcher.id == "" {
+		users, err := p.helix.GetUsers(&helix.UsersParams{
+			Logins: []string{twitcher.Name},
+		})
+		if err != nil {
+			return err
+		}
+
+		if users.Error != "" {
+			return errors.New(users.Error)
+		}
+		twitcher.id = users.Data.Users[0].ID
+	}
+
+	base := p.c.Get("baseurl", "") + "/twitch"
+
+	_, err := p.helix.CreateEventSubSubscription(&helix.EventSubSubscription{
+		Type:    helix.EventSubTypeStreamOnline,
+		Version: "1",
+		Condition: helix.EventSubCondition{
+			BroadcasterUserID: twitcher.id,
+		},
+		Transport: helix.EventSubTransport{
+			Method:   "webhook",
+			Callback: base + "/online",
+			Secret:   "s3cre7w0rd",
+		},
+	})
+	if err != nil {
+		return err
+	}
+
+	_, err = p.helix.CreateEventSubSubscription(&helix.EventSubSubscription{
+		Type:    helix.EventSubTypeStreamOffline,
+		Version: "1",
+		Condition: helix.EventSubCondition{
+			BroadcasterUserID: twitcher.id,
+		},
+		Transport: helix.EventSubTransport{
+			Method:   "webhook",
+			Callback: base + "/offline",
+			Secret:   "s3cre7w0rd",
+		},
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func (p *Twitch) twitchStatus(r bot.Request) bool {
 	channel := r.Msg.Channel
 	if users := p.c.GetArray("Twitch."+channel+".Users", []string{}); len(users) > 0 {
@@ -182,9 +261,8 @@ func (p *Twitch) twitchStatus(r bot.Request) bool {
 			twitcherName = strings.ToLower(twitcherName)
 			// we could re-add them here instead of needing to restart the bot.
 			if t, ok := p.twitchList[twitcherName]; ok {
-				err := p.checkTwitch(r.Conn, channel, t, true)
+				if t.online {
-				if err != nil {
+					p.streaming(r.Conn, r.Msg.Channel, t)
-					log.Error().Err(err).Msgf("error in checking twitch")
 				}
 			}
 		}
@@ -195,10 +273,8 @@ func (p *Twitch) twitchStatus(r bot.Request) bool {
 func (p *Twitch) twitchUserStatus(r bot.Request) bool {
 	who := strings.ToLower(r.Values["who"])
 	if t, ok := p.twitchList[who]; ok {
-		err := p.checkTwitch(r.Conn, r.Msg.Channel, t, true)
+		if t.online {
-		if err != nil {
+			p.streaming(r.Conn, r.Msg.Channel, t)
-			log.Error().Err(err).Msgf("error in checking twitch")
-			p.b.Send(r.Conn, bot.Message, r.Msg.Channel, "I had trouble with that.")
 		}
 	} else {
 		p.b.Send(r.Conn, bot.Message, r.Msg.Channel, "I don't know who that is.")
@@ -225,163 +301,11 @@ func (p *Twitch) help(c bot.Connector, kind bot.Kind, message msg.Message, args
 	return true
 }
 
-func (p *Twitch) twitchAuthLoop(c bot.Connector) {
+func (p *Twitch) connectBridge(c bot.Connector, ch string, info *Twitcher) {
-	frequency := p.c.GetInt("Twitch.AuthFreq", 60*60)
+	msg := fmt.Sprintf("This post is tracking #%s\n<%s>", info.Name, info.url())
-	cid := p.c.Get("twitch.clientid", "")
-	secret := p.c.Get("twitch.secret", "")
-	if cid == "" || secret == "" {
-		log.Info().Msgf("Disabling twitch autoauth.")
-		return
-	}
-
-	log.Info().Msgf("Checking auth every %d seconds", frequency)
-
-	if err := p.validateCredentials(); err != nil {
-		log.Error().Err(err).Msgf("error checking twitch validity")
-	}
-
-	for {
-		select {
-		case <-time.After(time.Duration(frequency) * time.Second):
-			if err := p.validateCredentials(); err != nil {
-				log.Error().Err(err).Msgf("error checking twitch validity")
-			}
-		}
-	}
-}
-
-func (p *Twitch) twitchChannelLoop(c bot.Connector, channel string) {
-	frequency := p.c.GetInt("Twitch.Freq", 60)
-	if p.c.Get("twitch.clientid", "") == "" || p.c.Get("twitch.secret", "") == "" {
-		log.Info().Msgf("Disabling twitch autochecking.")
-		return
-	}
-
-	log.Info().Msgf("Checking channels every %d seconds", frequency)
-
-	for {
-		time.Sleep(time.Duration(frequency) * time.Second)
-
-		for _, twitcherName := range p.c.GetArray("Twitch."+channel+".Users", []string{}) {
-			log.Debug().Msgf("checking %s on twiwch", twitcherName)
-			twitcherName = strings.ToLower(twitcherName)
-			if err := p.checkTwitch(c, channel, p.twitchList[twitcherName], false); err != nil {
-				log.Error().Err(err).Msgf("error in twitch loop")
-			}
-		}
-	}
-}
-
-func getRequest(url, clientID, token string) ([]byte, int, bool) {
-	bearer := fmt.Sprintf("Bearer %s", token)
-	var body []byte
-	var resp *http.Response
-	client := &http.Client{}
-	req, err := http.NewRequest("GET", url, nil)
-	if err != nil {
-		goto errCase
-	}
-
-	req.Header.Add("Client-ID", clientID)
-	req.Header.Add("Authorization", bearer)
-
-	resp, err = client.Do(req)
-	if err != nil {
-		goto errCase
-	}
-
-	body, err = ioutil.ReadAll(resp.Body)
-	if err != nil {
-		goto errCase
-	}
-	return body, resp.StatusCode, true
-
-errCase:
-	log.Error().Err(err)
-	return []byte{}, resp.StatusCode, false
-}
-
-type twitchInfo struct {
-	Name string
-	Game string
-	URL  string
-}
-
-func (p *Twitch) checkTwitch(c bot.Connector, channel string, twitcher *Twitcher, alwaysPrintStatus bool) error {
-	baseURL, err := url.Parse("https://api.twitch.tv/helix/streams")
-	if err != nil {
-		err := fmt.Errorf("error parsing twitch stream URL")
-		log.Error().Msg(err.Error())
-		return err
-	}
-
-	query := baseURL.Query()
-	query.Add("user_login", twitcher.name)
-
-	baseURL.RawQuery = query.Encode()
-
-	cid := p.c.Get("twitch.clientid", "")
-	token := p.c.Get("twitch.token", "")
-	if cid == token && cid == "" {
-		log.Info().Msgf("Twitch plugin not enabled.")
-		return nil
-	}
-
-	body, status, ok := getRequest(baseURL.String(), cid, token)
-	if !ok {
-		return fmt.Errorf("got status %d: %s", status, string(body))
-	}
-
-	var s stream
-	err = json.Unmarshal(body, &s)
-	if err != nil {
-		log.Error().Err(err).Msgf("error reading twitch data")
-		return err
-	}
-
-	games := s.Data
-	gameID, title := "", ""
-	if len(games) == 0 {
-		p.twitchList[twitcher.name].isStreaming = false
-	} else {
-		p.twitchList[twitcher.name].isStreaming = true
-		gameID = games[0].GameID
-		if gameID == "" {
-			gameID = "unknown"
-		}
-		title = games[0].Title
-	}
-
-	info := twitchInfo{
-		twitcher.name,
-		title,
-		twitcher.URL(),
-	}
-
-	log.Debug().Interface("info", info).Interface("twitcher", twitcher).Msgf("checking twitch")
-
-	if alwaysPrintStatus && twitcher.isStreaming {
-		p.streaming(c, channel, info)
-	} else if alwaysPrintStatus && !twitcher.isStreaming {
-		p.notStreaming(c, channel, info)
-	} else if twitcher.gameID != "" && !twitcher.isStreaming {
-		twitcher.gameID = ""
-		p.disconnectBridge(c, twitcher)
-		p.stopped(c, channel, info)
-		twitcher.gameID = ""
-	} else if twitcher.gameID != gameID && twitcher.isStreaming {
-		p.streaming(c, channel, info)
-		p.connectBridge(c, channel, info, twitcher)
-		twitcher.gameID = gameID
-	}
-	return nil
-}
-
-func (p *Twitch) connectBridge(c bot.Connector, ch string, info twitchInfo, twitcher *Twitcher) {
-	msg := fmt.Sprintf("This post is tracking #%s\n<%s>", twitcher.name, twitcher.URL())
 	err := p.startBridgeMsg(
 		fmt.Sprintf("%s-%s-%s", info.Name, info.Game, time.Now().Format("2006-01-02-15:04")),
-		twitcher.name,
+		info.Name,
 		msg,
 	)
 	if err != nil {
@@ -391,16 +315,16 @@ func (p *Twitch) connectBridge(c bot.Connector, ch string, info twitchInfo, twit
 }
 
 func (p *Twitch) disconnectBridge(c bot.Connector, twitcher *Twitcher) {
-	log.Debug().Msgf("Disconnecting bridge: %s -> %+v", twitcher.name, p.bridgeMap)
+	log.Debug().Msgf("Disconnecting bridge: %s -> %+v", twitcher.Name, p.bridgeMap)
 	for threadID, ircCh := range p.bridgeMap {
-		if strings.HasSuffix(ircCh, twitcher.name) {
+		if strings.HasSuffix(ircCh, twitcher.Name) {
 			delete(p.bridgeMap, threadID)
-			p.b.Send(c, bot.Message, threadID, "Stopped tracking #"+twitcher.name)
+			p.b.Send(c, bot.Message, threadID, "Stopped tracking #"+twitcher.Name)
 		}
 	}
 }
 
-func (p *Twitch) stopped(c bot.Connector, ch string, info twitchInfo) {
+func (p *Twitch) stopped(c bot.Connector, ch string, info *Twitcher) {
 	notStreamingTpl := p.c.Get("Twitch.StoppedTpl", stoppedStreamingTplFallback)
 	buf := bytes.Buffer{}
 	t, err := template.New("notStreaming").Parse(notStreamingTpl)
@@ -413,7 +337,7 @@ func (p *Twitch) stopped(c bot.Connector, ch string, info twitchInfo) {
 	p.b.Send(c, bot.Message, ch, buf.String())
 }
 
-func (p *Twitch) streaming(c bot.Connector, channel string, info twitchInfo) {
+func (p *Twitch) streaming(c bot.Connector, channel string, info *Twitcher) {
 	isStreamingTpl := p.c.Get("Twitch.IsTpl", isStreamingTplFallback)
 	buf := bytes.Buffer{}
 	t, err := template.New("isStreaming").Parse(isStreamingTpl)
@@ -426,7 +350,7 @@ func (p *Twitch) streaming(c bot.Connector, channel string, info twitchInfo) {
 	p.b.Send(c, bot.Message, channel, buf.String())
 }
 
-func (p *Twitch) notStreaming(c bot.Connector, ch string, info twitchInfo) {
+func (p *Twitch) notStreaming(c bot.Connector, ch string, info *Twitcher) {
 	notStreamingTpl := p.c.Get("Twitch.NotTpl", notStreamingTplFallback)
 	buf := bytes.Buffer{}
 	t, err := template.New("notStreaming").Parse(notStreamingTpl)
@@ -439,44 +363,120 @@ func (p *Twitch) notStreaming(c bot.Connector, ch string, info twitchInfo) {
 	p.b.Send(c, bot.Message, ch, buf.String())
 }
 
-func (p *Twitch) validateCredentials() error {
+type twitchCB struct {
-	cid := p.c.Get("twitch.clientid", "")
+	Challenge    string `json:"challenge"`
-	token := p.c.Get("twitch.token", "")
+	Subscription struct {
-	if token == "" {
+		ID        string `json:"id"`
-		return p.reAuthenticate()
+		Type      string `json:"type"`
-	}
+		Version   string `json:"version"`
-	_, status, ok := getRequest("https://id.twitch.tv/oauth2/validate", cid, token)
+		Status    string `json:"status"`
-	if !ok || status == http.StatusUnauthorized {
+		Cost      int    `json:"cost"`
-		return p.reAuthenticate()
+		Condition struct {
-	}
+			BroadcasterUserID string `json:"broadcaster_user_id"`
-	log.Debug().Msgf("checked credentials and they were valid")
+		} `json:"condition"`
-	return nil
+		CreatedAt time.Time `json:"created_at"`
+		Transport struct {
+			Method   string `json:"method"`
+			Callback string `json:"callback"`
+		} `json:"transport"`
+	} `json:"subscription"`
+	Event struct {
+		BroadcasterUserID    string `json:"broadcaster_user_id"`
+		BroadcasterUserLogin string `json:"broadcaster_user_login"`
+		BroadcasterUserName  string `json:"broadcaster_user_name"`
+	} `json:"event"`
 }
 
-func (p *Twitch) reAuthenticate() error {
+func (p *Twitch) offlineCB(w http.ResponseWriter, r *http.Request) {
-	cid := p.c.Get("twitch.clientid", "")
+	body, err := io.ReadAll(r.Body)
-	secret := p.c.Get("twitch.secret", "")
+	if err != nil {
-	if cid == "" || secret == "" {
+		log.Error().Err(err).Msg("")
-		return fmt.Errorf("could not request a new token without config values set")
+		return
 	}
-	resp, err := http.PostForm("https://id.twitch.tv/oauth2/token", url.Values{
+	defer r.Body.Close()
-		"client_id":     {cid},
+	// verify that the notification came from twitch using the secret.
-		"client_secret": {secret},
+	if !helix.VerifyEventSubNotification("s3cre7w0rd", r.Header, string(body)) {
-		"grant_type":    {"client_credentials"},
+		log.Error().Msg("no valid signature on subscription")
+		return
+	} else {
+		log.Info().Msg("verified signature for subscription")
+	}
+	var vals twitchCB
+	if err = json.Unmarshal(body, &vals); err != nil {
+		log.Error().Err(err).Msg("")
+		return
+	}
+
+	if vals.Challenge != "" {
+		w.Write([]byte(vals.Challenge))
+		return
+	}
+
+	log.Printf("got offline webhook: %v\n", vals)
+	w.WriteHeader(200)
+	w.Write([]byte("ok"))
+
+	twitcher := p.twitchList[vals.Event.BroadcasterUserLogin]
+	if !twitcher.online {
+		return
+	}
+	twitcher.online = false
+	twitcher.URL = twitcher.url()
+	if ch := p.c.Get("twitch.channel", ""); ch != "" {
+		p.stopped(p.b.DefaultConnector(), ch, twitcher)
+		p.disconnectBridge(p.b.DefaultConnector(), twitcher)
+	}
+}
+
+func (p *Twitch) onlineCB(w http.ResponseWriter, r *http.Request) {
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		log.Error().Err(err).Msg("")
+		return
+	}
+	defer r.Body.Close()
+	// verify that the notification came from twitch using the secret.
+	if !helix.VerifyEventSubNotification("s3cre7w0rd", r.Header, string(body)) {
+		log.Error().Msg("no valid signature on subscription")
+		return
+	} else {
+		log.Info().Msg("verified signature for subscription")
+	}
+	var vals twitchCB
+	if err = json.Unmarshal(body, &vals); err != nil {
+		log.Error().Err(err).Msg("")
+		return
+	}
+
+	if vals.Challenge != "" {
+		w.Write([]byte(vals.Challenge))
+		return
+	}
+
+	log.Printf("got online webhook: %v\n", vals)
+	w.WriteHeader(200)
+	w.Write([]byte("ok"))
+
+	streams, err := p.helix.GetStreams(&helix.StreamsParams{
+		UserIDs: []string{vals.Event.BroadcasterUserID},
 	})
 	if err != nil {
-		return err
+		log.Error().Err(err).Msg("")
+		return
 	}
-	body, err := ioutil.ReadAll(resp.Body)
+
-	if err != nil {
+	twitcher := p.twitchList[vals.Event.BroadcasterUserLogin]
-		return err
+
+	if twitcher.online {
+		return
+	}
+
+	twitcher.online = true
+	twitcher.URL = twitcher.url()
+	twitcher.gameID = streams.Data.Streams[0].GameID
+	twitcher.Game = streams.Data.Streams[0].GameName
+	if ch := p.c.Get("twitch.channel", ""); ch != "" {
+		p.streaming(p.b.DefaultConnector(), ch, twitcher)
+		p.connectBridge(p.b.DefaultConnector(), ch, twitcher)
 	}
-	credentials := struct {
-		AccessToken string `json:"access_token"`
-		ExpiresIn   int    `json:"expires_in"`
-		TokenType   string `json:"token_type"`
-	}{}
-	err = json.Unmarshal(body, &credentials)
-	log.Debug().Int("expires", credentials.ExpiresIn).Msgf("setting new twitch token")
-	return p.c.RegisterSecret("twitch.token", credentials.AccessToken)
 }

plugins/twitch/twitch_test.go

@@ -47,7 +47,7 @@ func makeTwitchPlugin(t *testing.T) (*Twitch, *bot.MockBot) {
 	assert.NotNil(t, c)
 
 	c.twitchList["drseabass"] = &Twitcher{
-		name:   "drseabass",
+		Name:   "drseabass",
 		gameID: "",
 	}
 

plugins/twitch/webTemplate.go

@@ -1,20 +0,0 @@
-package twitch
-
-var page = `
-<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<title>Is {{.Name}} streaming?</title>
-
-</head>
-
-<body style="text-align: center; padding-top: 200px;">
-
-<a style="font-weight: bold; font-size: 120pt;
-font-family: Arial, sans-serif; text-decoration: none; color: black;"
-title="{{.Status}}">{{.Status}}</a>
-
-</body>
-</html>
-`