mirror of
https://git.sr.ht/~ashkeel/strimertul
synced 2024-09-30 02:40:33 +00:00
225 lines
5.4 KiB
Go
225 lines
5.4 KiB
Go
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package client
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import (
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"context"
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"errors"
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"fmt"
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"time"
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"git.sr.ht/~ashkeel/strimertul/twitch"
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"git.sr.ht/~ashkeel/strimertul/twitch/eventsub"
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"git.sr.ht/~ashkeel/containers/sync"
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jsoniter "github.com/json-iterator/go"
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"github.com/nicklaw5/helix/v2"
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"go.uber.org/zap"
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"git.sr.ht/~ashkeel/strimertul/database"
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"git.sr.ht/~ashkeel/strimertul/webserver"
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)
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var json = jsoniter.ConfigFastest
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type Manager struct {
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client *Client
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cancelSubs func()
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}
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func NewManager(db database.Database, server *webserver.WebServer, logger *zap.Logger) (*Manager, error) {
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// Get Twitch config
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var config twitch.Config
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if err := db.GetJSON(twitch.ConfigKey, &config); err != nil {
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if !errors.Is(err, database.ErrEmptyKey) {
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return nil, fmt.Errorf("failed to get twitch config: %w", err)
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}
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config.Enabled = false
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}
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// Create new client
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client, err := newClient(config, db, server, logger)
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if err != nil {
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return nil, fmt.Errorf("failed to create twitch client: %w", err)
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}
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manager := &Manager{
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client: client,
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}
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// Listen for client config changes
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cancelConfigSub, err := db.SubscribeKey(twitch.ConfigKey, func(value string) {
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var newConfig twitch.Config
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if err := json.UnmarshalFromString(value, &newConfig); err != nil {
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logger.Error("Failed to decode Twitch integration config", zap.Error(err))
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return
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}
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var updatedClient *Client
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updatedClient, err = newClient(newConfig, db, server, logger)
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if err != nil {
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logger.Error("Could not create twitch client with new config, keeping old", zap.Error(err))
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return
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}
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err = manager.client.Close()
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if err != nil {
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logger.Warn("Twitch client could not close cleanly", zap.Error(err))
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}
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// New client works, replace old
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updatedClient.Merge(manager.client)
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manager.client = updatedClient
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logger.Info("Reloaded/updated Twitch integration")
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})
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if err != nil {
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logger.Error("Could not setup twitch config reload subscription", zap.Error(err))
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}
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manager.cancelSubs = func() {
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if cancelConfigSub != nil {
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cancelConfigSub()
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}
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}
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return manager, nil
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}
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func (m *Manager) Client() *Client {
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return m.client
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}
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func (m *Manager) Close() error {
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m.cancelSubs()
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if err := m.client.Close(); 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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type Client struct {
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Config *sync.RWSync[twitch.Config]
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DB database.Database
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API *helix.Client
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User helix.User
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Logger *zap.Logger
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eventSub *eventsub.Client
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server *webserver.WebServer
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ctx context.Context
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cancel context.CancelFunc
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restart chan bool
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streamOnline *sync.RWSync[bool]
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}
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func (c *Client) Merge(old *Client) {
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// Copy bot instance and some params
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c.streamOnline.Set(old.streamOnline.Get())
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c.ensureRoute()
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}
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// Hacky function to deal with sync issues when restarting client
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func (c *Client) ensureRoute() {
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if c.Config.Get().Enabled {
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c.server.RegisterRoute(twitch.CallbackRoute, c)
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}
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}
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func newClient(config twitch.Config, db database.Database, server *webserver.WebServer, logger *zap.Logger) (*Client, error) {
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// Create Twitch client
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ctx, cancel := context.WithCancel(context.Background())
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client := &Client{
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Config: sync.NewRWSync(config),
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DB: db,
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Logger: logger.With(zap.String("service", "twitch")),
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restart: make(chan bool, 128),
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streamOnline: sync.NewRWSync(false),
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ctx: ctx,
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cancel: cancel,
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server: server,
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}
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if config.Enabled {
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var err error
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client.API, err = twitch.GetHelixAPI(db)
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if err != nil {
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return nil, fmt.Errorf("failed to create twitch client: %w", err)
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}
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server.RegisterRoute(twitch.CallbackRoute, client)
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if userClient, err := twitch.GetUserClient(db, true); err == nil {
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users, err := userClient.GetUsers(&helix.UsersParams{})
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if err != nil {
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client.Logger.Error("Failed looking up user", zap.Error(err))
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} else if len(users.Data.Users) < 1 {
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client.Logger.Error("No users found, please authenticate in Twitch configuration -> Events")
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} else {
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client.User = users.Data.Users[0]
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client.eventSub, err = eventsub.Setup(ctx, userClient, client.User, db, logger)
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if err != nil {
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client.Logger.Error("Failed to setup EventSub", zap.Error(err))
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}
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}
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} else {
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client.Logger.Warn("Twitch user not identified, this will break most features")
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}
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go client.runStatusPoll()
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}
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return client, nil
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}
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func (c *Client) runStatusPoll() {
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c.Logger.Info("Started polling for stream status")
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for {
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// Make sure we're configured and connected properly first
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if !c.Config.Get().Enabled {
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continue
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}
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// Check if streamer is online, if possible
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func() {
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status, err := c.API.GetStreams(&helix.StreamsParams{
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UserLogins: []string{c.Config.Get().Channel}, // TODO Replace with something non bot dependant
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})
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if err != nil {
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c.Logger.Error("Error checking stream status", zap.Error(err))
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return
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}
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c.streamOnline.Set(len(status.Data.Streams) > 0)
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err = c.DB.PutJSON(twitch.StreamInfoKey, status.Data.Streams)
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if err != nil {
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c.Logger.Warn("Error saving stream info", zap.Error(err))
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}
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}()
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// Wait for next poll (or cancellation)
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select {
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case <-c.ctx.Done():
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return
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case <-time.After(60 * time.Second):
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}
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}
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}
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func (c *Client) baseURL() (string, error) {
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var severConfig struct {
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Bind string `json:"bind"`
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}
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err := c.DB.GetJSON("http/config", &severConfig)
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return severConfig.Bind, err
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}
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func (c *Client) Close() error {
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c.server.UnregisterRoute(twitch.CallbackRoute)
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defer c.cancel()
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return nil
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}
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