Add back TwitchBot

package-lock.json

@@ -3860,11 +3860,36 @@
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+      "deprecated": "I (randers) am no longer supporting or updating dank-twitch-irc. While it may continue to work, I'm no longer making sure it will continue to do so in the future. This package will also not receive any dependency or security updates. For this reason I recommend you to choose a different library in your projects, or to fork this project to continue development on it. If somebody makes a high-quality fork of this project, you can contact me and I can link to your fork in this deprecation notice here. Thank you.",
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+      }
+    },
     "node_modules/slash": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
@@ -12432,7 +12667,6 @@
       "version": "7.2.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
       "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
-      "dev": true,
       "dependencies": {
         "has-flag": "^4.0.0"
       },
@@ -12671,6 +12905,12 @@
         }
       }
     },
+    "node_modules/ts-toolbelt": {
+      "version": "8.4.0",
+      "resolved": "https://registry.npmjs.org/ts-toolbelt/-/ts-toolbelt-8.4.0.tgz",
+      "integrity": "sha512-hnGJXIgC49ZuF5g5oDthoge8t4cvT0dYg2pYO5C6yV/HmUUy1koooU2U/5K2N+Uw++hcXQpJAToLRa+GRp28Sg==",
+      "license": "Apache-2.0"
+    },
     "node_modules/tsconfig-paths": {
       "version": "3.15.0",
       "resolved": "https://registry.npmjs.org/tsconfig-paths/-/tsconfig-paths-3.15.0.tgz",
@@ -14093,7 +14333,7 @@
       }
     },
     "packages/streamwall": {
-      "version": "2.0.0-pre1",
+      "version": "2.0.0-pre2",
       "license": "MIT",
       "dependencies": {
         "@iarna/toml": "^2.2.5",
@@ -14102,6 +14342,8 @@
         "bufferutil": "^4.0.9",
         "chokidar": "^4.0.3",
         "color": "^5.0.0",
+        "dank-twitch-irc": "^4.3.0",
+        "ejs": "^3.1.10",
         "electron-squirrel-startup": "^1.0.1",
         "esbuild-register": "^3.6.0",
         "hls.js": "^1.5.18",
@@ -14132,6 +14374,7 @@
         "@electron/fuses": "^1.8.0",
         "@preact/preset-vite": "^2.10.1",
         "@types/color": "^4.2.0",
+        "@types/ejs": "^3.1.5",
         "@types/electron-squirrel-startup": "^1.0.2",
         "@types/lodash-es": "^4.17.12",
         "@types/ws": "^8.5.13",

packages/streamwall/package.json

@@ -25,6 +25,7 @@
     "@electron/fuses": "^1.8.0",
     "@preact/preset-vite": "^2.10.1",
     "@types/color": "^4.2.0",
+    "@types/ejs": "^3.1.5",
     "@types/electron-squirrel-startup": "^1.0.2",
     "@types/lodash-es": "^4.17.12",
     "@types/ws": "^8.5.13",
@@ -48,6 +49,8 @@
     "bufferutil": "^4.0.9",
     "chokidar": "^4.0.3",
     "color": "^5.0.0",
+    "dank-twitch-irc": "^4.3.0",
+    "ejs": "^3.1.10",
     "electron-squirrel-startup": "^1.0.1",
     "esbuild-register": "^3.6.0",
     "hls.js": "^1.5.18",

packages/streamwall/src/main/TwitchBot.ts

@@ -0,0 +1,202 @@
+import Color from 'color'
+import {
+  ChatClient,
+  LoginError,
+  PrivmsgMessage,
+  SlowModeRateLimiter,
+} from 'dank-twitch-irc'
+import ejs from 'ejs'
+import EventEmitter from 'events'
+import { StreamList, StreamwallState } from 'streamwall-shared'
+import { matchesState } from 'xstate'
+import { StreamwallConfig } from '.'
+
+const VOTE_RE = /^!(\d+)$/
+
+type TwitchBotConfig = StreamwallConfig['twitch'] & {
+  username: string
+  token: string
+  channel: string
+}
+
+export default class TwitchBot extends EventEmitter {
+  config: TwitchBotConfig
+  announceTemplate: ejs.TemplateFunction
+  voteTemplate: ejs.TemplateFunction
+  client: ChatClient
+  streams: StreamList
+  listeningURL: string | null
+  dwellTimeout: NodeJS.Timeout | undefined
+  announceTimeouts: Map<string, NodeJS.Timeout>
+  votes: Map<number, number>
+
+  constructor(config: TwitchBotConfig) {
+    super()
+    const { username, token, vote } = config
+    this.config = config
+    this.announceTemplate = ejs.compile(config.announce.template)
+
+    const client = new ChatClient({
+      username,
+      password: `oauth:${token}`,
+      rateLimits: 'default',
+    })
+    client.use(new SlowModeRateLimiter(client, 0))
+    this.client = client
+
+    this.streams = []
+    this.listeningURL = null
+    this.dwellTimeout = undefined
+    this.announceTimeouts = new Map()
+
+    if (vote.interval) {
+      this.voteTemplate = ejs.compile(config.vote.template)
+      this.votes = new Map()
+      setInterval(this.tallyVotes.bind(this), vote.interval * 1000)
+    }
+
+    client.on('ready', () => {
+      this.onReady()
+    })
+    client.on('error', (err) => {
+      console.error('Twitch connection error:', err)
+      if (err instanceof LoginError) {
+        client.close()
+      }
+    })
+    client.on('close', (err) => {
+      console.log('Twitch bot disconnected.')
+      if (err != null) {
+        console.error('Twitch bot disconnected due to error:', err)
+      }
+    })
+    client.on('PRIVMSG', (msg) => {
+      this.onMsg(msg)
+    })
+  }
+
+  connect() {
+    const { client } = this
+    client.connect()
+  }
+
+  async onReady() {
+    const { client } = this
+    const { channel, color: colorText } = this.config
+    const color = Color(colorText)
+    await client.setColor({
+      r: color.red(),
+      g: color.green(),
+      b: color.blue(),
+    })
+    await client.join(channel)
+    this.emit('connected')
+  }
+
+  onState({ views, streams }: StreamwallState) {
+    this.streams = streams
+
+    const listeningView = views.find(({ state }) =>
+      matchesState(state, 'displaying.running.audio.listening'),
+    )
+    if (!listeningView) {
+      return
+    }
+
+    const listeningURL = listeningView.context.content?.url ?? null
+    if (listeningURL === this.listeningURL) {
+      return
+    }
+    this.listeningURL = listeningURL
+    this.onListeningURLChange(listeningURL)
+  }
+
+  onListeningURLChange(listeningURL: string | null) {
+    if (!listeningURL) {
+      return
+    }
+
+    const { announce } = this.config
+    clearTimeout(this.dwellTimeout)
+    this.dwellTimeout = setTimeout(() => {
+      if (!this.announceTimeouts.has(listeningURL)) {
+        this.announce()
+      }
+    }, announce.delay * 1000)
+  }
+
+  async announce() {
+    const { client, listeningURL, streams } = this
+    const { channel, announce } = this.config
+
+    if (!client.ready || !listeningURL) {
+      return
+    }
+
+    const stream = streams.find((s) => s.link === listeningURL)
+    if (!stream) {
+      return
+    }
+
+    const msg = this.announceTemplate({ stream })
+    await client.say(channel, msg)
+
+    const timeout = setTimeout(() => {
+      this.announceTimeouts.delete(listeningURL)
+      if (this.listeningURL === listeningURL) {
+        this.announce()
+      }
+    }, announce.interval * 1000)
+    this.announceTimeouts.set(listeningURL, timeout)
+  }
+
+  async tallyVotes() {
+    const { client } = this
+    const { channel } = this.config
+    if (this.votes.size === 0) {
+      return
+    }
+
+    let voteCount = 0
+    let selectedIdx = null
+    for (const [idx, value] of this.votes) {
+      if (value > voteCount) {
+        voteCount = value
+        selectedIdx = idx
+      }
+    }
+
+    if (selectedIdx === null) {
+      return
+    }
+
+    const msg = this.voteTemplate({ selectedIdx, voteCount })
+    await client.say(channel, msg)
+
+    // Index spaces starting with 1
+    this.emit('setListeningView', selectedIdx - 1)
+
+    this.votes = new Map()
+  }
+
+  onMsg(msg: PrivmsgMessage) {
+    const { vote } = this.config
+    if (!vote.interval) {
+      return
+    }
+
+    const match = msg.messageText.match(VOTE_RE)
+    if (!match) {
+      return
+    }
+
+    let idx
+    try {
+      idx = Number(match[1])
+    } catch (err) {
+      return
+    }
+
+    this.votes.set(idx, (this.votes.get(idx) || 0) + 1)
+  }
+}

packages/streamwall/src/main/index.ts

@@ -24,6 +24,7 @@ import {
 } from './data'
 import StreamdelayClient from './StreamdelayClient'
 import StreamWindow from './StreamWindow'
+import TwitchBot from './TwitchBot'
 
 const SENTRY_DSN =
   'https://e630a21dcf854d1a9eb2a7a8584cbd0b@o459879.ingest.sentry.io/5459505'
@@ -54,6 +55,21 @@ export interface StreamwallConfig {
   control: {
     endpoint: string
   }
+  twitch: {
+    channel: string | null
+    username: string | null
+    token: string | null
+    color: string
+    announce: {
+      template: string
+      interval: number
+      delay: number
+    }
+    vote: {
+      template: string
+      interval: number
+    }
+  }
   telemetry: {
     sentry: boolean
   }
@@ -157,6 +173,61 @@ function parseArgs(): StreamwallConfig {
         describe: 'URL of control server endpoint',
         default: null,
       })
+      .group(
+        [
+          'twitch.channel',
+          'twitch.username',
+          'twitch.token',
+          'twitch.color',
+          'twitch.announce.template',
+          'twitch.announce.interval',
+          'twitch.vote.template',
+          'twitch.vote.interval',
+        ],
+        'Twitch Chat',
+      )
+      .option('twitch.channel', {
+        describe: 'Name of Twitch channel',
+        default: null,
+      })
+      .option('twitch.username', {
+        describe: 'Username of Twitch bot account',
+        default: null,
+      })
+      .option('twitch.token', {
+        describe: 'Password of Twitch bot account',
+        default: null,
+      })
+      .option('twitch.color', {
+        describe: 'Color of Twitch bot username',
+        default: '#ff0000',
+      })
+      .option('twitch.announce.template', {
+        describe: 'Message template for stream announcements',
+        default:
+          'SingsMic <%- stream.source %> <%- stream.city && stream.state ? `(${stream.city} ${stream.state})` : `` %> <%- stream.link %>',
+      })
+      .option('twitch.announce.interval', {
+        describe:
+          'Minimum time interval (in seconds) between re-announcing the same stream',
+        number: true,
+        default: 60,
+      })
+      .option('twitch.announce.delay', {
+        describe: 'Time to dwell on a stream before its details are announced',
+        number: true,
+        default: 30,
+      })
+      .option('twitch.vote.template', {
+        describe: 'Message template for vote result announcements',
+        default:
+          'Switching to #<%- selectedIdx %> (with <%- voteCount %> votes)',
+      })
+      .option('twitch.vote.interval', {
+        describe: 'Time interval (in seconds) between votes (0 to disable)',
+        number: true,
+        default: 0,
+      })
       .group(['telemetry.sentry'], 'Telemetry')
       .option('telemetry.sentry', {
         describe: 'Enable error reporting to Sentry',
@@ -402,6 +473,26 @@ async function main(argv: ReturnType<typeof parseArgs>) {
     streamdelayClient.connect()
   }
 
+  const {
+    username: twitchUsername,
+    token: twitchToken,
+    channel: twitchChannel,
+  } = argv.twitch
+  if (twitchUsername && twitchToken && twitchChannel) {
+    console.debug('Setting up Twitch bot...')
+    const twitchBot = new TwitchBot({
+      ...argv.twitch,
+      username: twitchUsername,
+      token: twitchToken,
+      channel: twitchChannel,
+    })
+    twitchBot.on('setListeningView', (idx) => {
+      streamWindow.setListeningView(idx)
+    })
+    stateEmitter.on('state', () => twitchBot.onState(clientState))
+    twitchBot.connect()
+  }
+
   const dataSources = [
     ...argv.data['json-url'].map((url) => {
       console.debug('Setting data source from json-url:', url)