mirror of https://github.com/velour/catbase.git
487 lines
12 KiB
Go
487 lines
12 KiB
Go
package twitch
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"github.com/nicklaw5/helix"
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"io"
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"net/http"
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"net/url"
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"regexp"
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"strings"
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"sync"
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"text/template"
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"time"
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"github.com/go-chi/chi/v5"
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"github.com/rs/zerolog/log"
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"github.com/velour/catbase/bot"
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"github.com/velour/catbase/bot/msg"
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"github.com/velour/catbase/config"
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)
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const (
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isStreamingTplFallback = "{{.Name}} is streaming {{.Game}} at {{.URL}}"
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notStreamingTplFallback = "{{.Name}} is not streaming"
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stoppedStreamingTplFallback = "{{.Name}} just stopped streaming"
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)
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type Twitch struct {
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b bot.Bot
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c *config.Config
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twitchList map[string]*Twitcher
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tbl bot.HandlerTable
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ircConnected bool
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irc *IRC
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ircLock sync.Mutex
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bridgeMap map[string]string
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helix *helix.Client
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subs map[string]bool
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}
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type Twitcher struct {
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id string
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gameID string
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online bool
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Name string
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Game string
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URL string
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}
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func (t Twitcher) url() string {
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u, _ := url.Parse("https://twitch.tv/")
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u2, _ := url.Parse(t.Name)
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return u.ResolveReference(u2).String()
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}
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type stream struct {
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Data []struct {
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ID string `json:"id"`
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UserID string `json:"user_id"`
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GameID string `json:"game_id"`
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CommunityIds []string `json:"community_ids"`
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Type string `json:"type"`
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Title string `json:"title"`
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ViewerCount int `json:"viewer_count"`
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StartedAt time.Time `json:"started_at"`
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Language string `json:"language"`
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ThumbnailURL string `json:"thumbnail_url"`
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} `json:"data"`
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Pagination struct {
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Cursor string `json:"cursor"`
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} `json:"pagination"`
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}
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func New(b bot.Bot) *Twitch {
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p := &Twitch{
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b: b,
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c: b.Config(),
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twitchList: map[string]*Twitcher{},
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bridgeMap: map[string]string{},
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}
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for _, twitcherName := range p.c.GetArray("Twitch.Users", []string{}) {
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twitcherName = strings.ToLower(twitcherName)
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p.twitchList[twitcherName] = &Twitcher{
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Name: twitcherName,
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}
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}
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p.register()
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p.registerWeb()
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return p
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}
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func (p *Twitch) registerWeb() {
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r := chi.NewRouter()
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r.HandleFunc("/online", p.onlineCB)
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r.HandleFunc("/offline", p.offlineCB)
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p.b.RegisterWeb(r, "/twitch")
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}
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func (p *Twitch) register() {
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p.tbl = bot.HandlerTable{
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{
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Kind: bot.Message, IsCmd: true,
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Regex: regexp.MustCompile(`(?i)^twitch status$`),
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HelpText: "Get status of all twitchers",
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Handler: p.twitchStatus,
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},
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{
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Kind: bot.Message, IsCmd: false,
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Regex: regexp.MustCompile(`(?i)^is (?P<who>.+) streaming\??$`),
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HelpText: "Check if a specific twitcher is streaming",
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Handler: p.twitchUserStatus,
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},
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{
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Kind: bot.Message, IsCmd: true,
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Regex: regexp.MustCompile(`(?i)^reset twitch$`),
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HelpText: "Reset the twitch templates",
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Handler: p.resetTwitch,
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},
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{
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Kind: bot.Message, IsCmd: true,
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Regex: regexp.MustCompile(`(?i)^track (?P<twitchChannel>.+)$`),
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HelpText: "Bridge to this channel",
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Handler: p.mkBridge,
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},
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{
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Kind: bot.Message, IsCmd: true,
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Regex: regexp.MustCompile(`(?i)^untrack$`),
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HelpText: "Disconnect a bridge (only in bridged channel)",
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Handler: p.rmBridge,
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},
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{
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Kind: bot.Message, IsCmd: false,
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Regex: regexp.MustCompile(`.*`),
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Handler: p.bridgeMsg,
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},
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{
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Kind: bot.Startup, IsCmd: false,
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Regex: regexp.MustCompile(`.*`),
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Handler: p.startup,
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},
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{
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Kind: bot.Shutdown, IsCmd: false,
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Regex: regexp.MustCompile(`.*`),
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Handler: p.shutdown,
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},
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}
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p.b.Register(p, bot.Help, p.help)
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p.b.RegisterTable(p, p.tbl)
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}
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func (p *Twitch) shutdown(r bot.Request) bool {
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return false
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}
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func (p *Twitch) startup(r bot.Request) bool {
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var err error
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clientID := p.c.Get("twitch.clientid", "")
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clientSecret := p.c.Get("twitch.secret", "")
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if clientID == "" || clientSecret == "" {
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log.Info().Msg("No clientID/secret, twitch disabled")
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return false
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}
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p.helix, err = helix.NewClient(&helix.Options{
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ClientID: clientID,
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ClientSecret: clientSecret,
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})
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if err != nil {
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log.Printf("Login error: %v", err)
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return false
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}
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access, err := p.helix.RequestAppAccessToken([]string{"user:read:email"})
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if err != nil {
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log.Printf("Login error: %v", err)
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return false
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}
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fmt.Printf("%+v\n", access)
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// Set the access token on the client
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p.helix.SetAppAccessToken(access.Data.AccessToken)
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p.subs = map[string]bool{}
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for _, t := range p.twitchList {
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if err := p.follow(t); err != nil {
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log.Error().Err(err).Msg("")
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}
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}
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return false
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}
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func (p *Twitch) follow(twitcher *Twitcher) error {
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if twitcher.id == "" {
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users, err := p.helix.GetUsers(&helix.UsersParams{
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Logins: []string{twitcher.Name},
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})
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if err != nil {
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return err
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}
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if users.Error != "" {
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return errors.New(users.Error)
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}
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twitcher.id = users.Data.Users[0].ID
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}
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base := p.c.Get("baseurl", "") + "/twitch"
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_, err := p.helix.CreateEventSubSubscription(&helix.EventSubSubscription{
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Type: helix.EventSubTypeStreamOnline,
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Version: "1",
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Condition: helix.EventSubCondition{
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BroadcasterUserID: twitcher.id,
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},
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Transport: helix.EventSubTransport{
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Method: "webhook",
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Callback: base + "/online",
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Secret: "s3cre7w0rd",
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},
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})
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if err != nil {
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return err
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}
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_, err = p.helix.CreateEventSubSubscription(&helix.EventSubSubscription{
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Type: helix.EventSubTypeStreamOffline,
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Version: "1",
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Condition: helix.EventSubCondition{
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BroadcasterUserID: twitcher.id,
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},
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Transport: helix.EventSubTransport{
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Method: "webhook",
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Callback: base + "/offline",
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Secret: "s3cre7w0rd",
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},
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})
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if err != nil {
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return err
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}
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return nil
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}
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func (p *Twitch) twitchStatus(r bot.Request) bool {
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channel := r.Msg.Channel
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if users := p.c.GetArray("Twitch."+channel+".Users", []string{}); len(users) > 0 {
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for _, twitcherName := range users {
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twitcherName = strings.ToLower(twitcherName)
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// we could re-add them here instead of needing to restart the bot.
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if t, ok := p.twitchList[twitcherName]; ok {
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if t.online {
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p.streaming(r.Conn, r.Msg.Channel, t)
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}
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}
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}
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}
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return true
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}
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func (p *Twitch) twitchUserStatus(r bot.Request) bool {
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who := strings.ToLower(r.Values["who"])
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if t, ok := p.twitchList[who]; ok {
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if t.online {
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p.streaming(r.Conn, r.Msg.Channel, t)
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}
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} else {
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p.b.Send(r.Conn, bot.Message, r.Msg.Channel, "I don't know who that is.")
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}
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return true
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}
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func (p *Twitch) resetTwitch(r bot.Request) bool {
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p.c.Set("twitch.istpl", isStreamingTplFallback)
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p.c.Set("twitch.nottpl", notStreamingTplFallback)
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p.c.Set("twitch.stoppedtpl", stoppedStreamingTplFallback)
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p.b.Send(r.Conn, bot.Message, r.Msg.Channel, "The Twitch templates have been reset.")
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return true
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}
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func (p *Twitch) help(c bot.Connector, kind bot.Kind, message msg.Message, args ...any) bool {
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msg := "You can set the templates for streams with\n"
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msg += fmt.Sprintf("twitch.istpl (default: %s)\n", isStreamingTplFallback)
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msg += fmt.Sprintf("twitch.nottpl (default: %s)\n", notStreamingTplFallback)
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msg += fmt.Sprintf("twitch.stoppedtpl (default: %s)\n", stoppedStreamingTplFallback)
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msg += "You can reset all messages with `!reset twitch`"
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msg += "And you can ask who is streaming with `!twitch status`"
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p.b.Send(c, bot.Message, message.Channel, msg)
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return true
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}
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func (p *Twitch) connectBridge(c bot.Connector, ch string, info *Twitcher) {
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msg := fmt.Sprintf("This post is tracking #%s\n<%s>", info.Name, info.url())
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err := p.startBridgeMsg(
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fmt.Sprintf("%s-%s-%s", info.Name, info.Game, time.Now().Format("2006-01-02-15:04")),
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info.Name,
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msg,
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)
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if err != nil {
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log.Error().Err(err).Msgf("unable to start bridge")
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p.b.Send(c, bot.Message, ch, fmt.Sprintf("Unable to start bridge: %s", err))
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}
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}
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func (p *Twitch) disconnectBridge(c bot.Connector, twitcher *Twitcher) {
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log.Debug().Msgf("Disconnecting bridge: %s -> %+v", twitcher.Name, p.bridgeMap)
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for threadID, ircCh := range p.bridgeMap {
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if strings.HasSuffix(ircCh, twitcher.Name) {
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delete(p.bridgeMap, threadID)
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p.b.Send(c, bot.Message, threadID, "Stopped tracking #"+twitcher.Name)
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}
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}
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}
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func (p *Twitch) stopped(c bot.Connector, ch string, info *Twitcher) {
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notStreamingTpl := p.c.Get("Twitch.StoppedTpl", stoppedStreamingTplFallback)
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buf := bytes.Buffer{}
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t, err := template.New("notStreaming").Parse(notStreamingTpl)
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if err != nil {
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log.Error().Err(err)
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p.b.Send(c, bot.Message, ch, err)
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t = template.Must(template.New("notStreaming").Parse(stoppedStreamingTplFallback))
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}
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t.Execute(&buf, info)
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p.b.Send(c, bot.Message, ch, buf.String())
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}
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func (p *Twitch) streaming(c bot.Connector, channel string, info *Twitcher) {
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isStreamingTpl := p.c.Get("Twitch.IsTpl", isStreamingTplFallback)
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buf := bytes.Buffer{}
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t, err := template.New("isStreaming").Parse(isStreamingTpl)
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if err != nil {
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log.Error().Err(err)
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p.b.Send(c, bot.Message, channel, err)
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t = template.Must(template.New("isStreaming").Parse(isStreamingTplFallback))
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}
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t.Execute(&buf, info)
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p.b.Send(c, bot.Message, channel, buf.String())
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}
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func (p *Twitch) notStreaming(c bot.Connector, ch string, info *Twitcher) {
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notStreamingTpl := p.c.Get("Twitch.NotTpl", notStreamingTplFallback)
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buf := bytes.Buffer{}
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t, err := template.New("notStreaming").Parse(notStreamingTpl)
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if err != nil {
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log.Error().Err(err)
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p.b.Send(c, bot.Message, ch, err)
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t = template.Must(template.New("notStreaming").Parse(notStreamingTplFallback))
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}
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t.Execute(&buf, info)
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p.b.Send(c, bot.Message, ch, buf.String())
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}
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type twitchCB struct {
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Challenge string `json:"challenge"`
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Subscription struct {
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ID string `json:"id"`
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Type string `json:"type"`
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Version string `json:"version"`
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Status string `json:"status"`
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Cost int `json:"cost"`
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Condition struct {
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BroadcasterUserID string `json:"broadcaster_user_id"`
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} `json:"condition"`
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CreatedAt time.Time `json:"created_at"`
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Transport struct {
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Method string `json:"method"`
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Callback string `json:"callback"`
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} `json:"transport"`
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} `json:"subscription"`
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Event struct {
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BroadcasterUserID string `json:"broadcaster_user_id"`
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BroadcasterUserLogin string `json:"broadcaster_user_login"`
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BroadcasterUserName string `json:"broadcaster_user_name"`
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} `json:"event"`
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}
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func (p *Twitch) offlineCB(w http.ResponseWriter, r *http.Request) {
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body, err := io.ReadAll(r.Body)
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if err != nil {
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log.Error().Err(err).Msg("")
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return
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}
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defer r.Body.Close()
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// verify that the notification came from twitch using the secret.
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if !helix.VerifyEventSubNotification("s3cre7w0rd", r.Header, string(body)) {
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log.Error().Msg("no valid signature on subscription")
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return
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} else {
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log.Info().Msg("verified signature for subscription")
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}
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var vals twitchCB
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if err = json.Unmarshal(body, &vals); err != nil {
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log.Error().Err(err).Msg("")
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return
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}
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if vals.Challenge != "" {
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w.Write([]byte(vals.Challenge))
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return
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}
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log.Printf("got offline webhook: %v\n", vals)
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w.WriteHeader(200)
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w.Write([]byte("ok"))
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twitcher := p.twitchList[vals.Event.BroadcasterUserLogin]
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if !twitcher.online {
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return
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}
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twitcher.online = false
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twitcher.URL = twitcher.url()
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if ch := p.c.Get("twitch.channel", ""); ch != "" {
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p.stopped(p.b.DefaultConnector(), ch, twitcher)
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if p.c.GetBool("twitch.irc", false) {
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p.disconnectBridge(p.b.DefaultConnector(), twitcher)
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}
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}
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}
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func (p *Twitch) onlineCB(w http.ResponseWriter, r *http.Request) {
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body, err := io.ReadAll(r.Body)
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if err != nil {
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log.Error().Err(err).Msg("")
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return
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}
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defer r.Body.Close()
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// verify that the notification came from twitch using the secret.
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if !helix.VerifyEventSubNotification("s3cre7w0rd", r.Header, string(body)) {
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log.Error().Msg("no valid signature on subscription")
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return
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} else {
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log.Info().Msg("verified signature for subscription")
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}
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var vals twitchCB
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if err = json.Unmarshal(body, &vals); err != nil {
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log.Error().Err(err).Msg("")
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return
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}
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if vals.Challenge != "" {
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w.Write([]byte(vals.Challenge))
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return
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}
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log.Printf("got online webhook: %v\n", vals)
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w.WriteHeader(200)
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w.Write([]byte("ok"))
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streams, err := p.helix.GetStreams(&helix.StreamsParams{
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UserIDs: []string{vals.Event.BroadcasterUserID},
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})
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if err != nil {
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log.Error().Err(err).Msg("")
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return
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}
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twitcher := p.twitchList[vals.Event.BroadcasterUserLogin]
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if twitcher.online {
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return
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}
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twitcher.online = true
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twitcher.URL = twitcher.url()
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twitcher.gameID = streams.Data.Streams[0].GameID
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twitcher.Game = streams.Data.Streams[0].GameName
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if ch := p.c.Get("twitch.channel", ""); ch != "" {
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p.streaming(p.b.DefaultConnector(), ch, twitcher)
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if p.c.GetBool("twitch.irc", false) {
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p.connectBridge(p.b.DefaultConnector(), ch, twitcher)
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}
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}
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}
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