add inital program versions

2025-05-18 21:14:45 -05:00
parent 6c374871e7
commit 5aaa58bd23
6 changed files with 718 additions and 1 deletions
--- a/ShredPlaybackChannel.js
+++ b/ShredPlaybackChannel.js
@ -0,0 +1,139 @@
+// encapsulate a channel where we do playback
+
+class ShredPlaybackChannel {
+  constructor(guildID, vcID, vtID=null, autoJoin=false, active=true) {
+    this._guildID = guildID;
+    this._vcID = vcID;
+    this._vtID = vtID;
+    this._uri = ShredPlaybackChannel.defaultURI;
+    this._auto = autoJoin;
+    this._active = active;
+  }
+
+  get guildID()        { return this._guildID; }
+  get vcID() { return this._vcID; }
+  get vtID() { return this._vtID; }
+  get uri() { return this._uri; }
+  get autoJoin() { return this.autoJoin === true; }
+  get active()   { return this._active === true; }
+
+  stopPlayback(part=false) {
+    if(this.voiceConnection) {
+      // stop if we are already playing (allows start to reset)
+      console.log("Stopping player..");
+      this.voiceConnection.stopPlaying();
+
+      if( part !== false ) {
+	this.voiceConnection.leave();
+      }
+    } else {
+      console.log("Unable to stop playback: no voice connection.");
+    }
+  }
+
+  restartPlaybackDelayed(
+    // miliseconds of delay before resuming playback
+    delay=ShredPlaybackChannel.defaultRestartPlaybackDelayMS
+  )
+  {
+    setTimeout( function() { this.onVoiceConnection() }, delay );
+  }
+
+  startPlayback() {
+    if(this.voiceConnection) {
+      // stop if we are already playing (allows start to reset)
+      if(this.voiceConnection.playing) {
+	this.stopPlayback();
+      }
+
+      // invokes FFMPEG
+      this.voiceConnection.play(
+	ShredPlaybackChannel.defaultURI,
+	ShredPlaybackChannel.defaultStreamOptions
+      );
+
+      // if that didn't throw the stream is now active
+      this._active = true;
+
+      // auto-reconnect unless stream if stream was active
+      this.voiceConnection.once("end", function () {
+	if(this.active) {
+	  this._active = false;
+	  this.restartPlaybackDelayed();
+	}
+      });
+    } else {
+      console.log("Unable to start playback: no voice connection.");
+    }
+  }
+
+  onVoiceConnection(voiceConnection=null) {
+    if(voiceConnection) {
+      // save new voiceConnection when provided
+      this.voiceConnection = voiceConnection;
+    }
+    if(this.active) {
+      this.startPlayback();
+    }
+  }
+
+  endVoiceConnection() {
+    this._active = false;
+    if(this.voiceConnection) {
+      this.stopPlaying();
+      this.voiceConnection = null;
+    }
+    else {
+      console.log(`Cannot end voice connection, no connection to channel ID ${this.vcID}`);
+    }
+  }
+
+  startVoiceConnection(bot) {
+    const me = this;
+    bot.joinVoiceChannel( me.vcID ).catch((err) => {
+      console.log( 'ERROR: failed to join channel '
+		   + `${this.vcID} on guild ${this.guildID}: `
+		   + err);
+      console.debug( me );
+    }).then(function (vc) {
+      me.onVoiceConnection(vc);
+      if( me.vtID ) {
+	bot.createMessage( me.vtID, `Now playing **${me.uri}**`)
+      }
+    });
+  }
+
+  static JoinAndPlay(
+    bot,
+    guildID,
+    voiceChannelID,
+    voiceTextChannelID=null,
+    autoJoin=false,
+    active=true
+  )
+  {
+    try {
+      const ch = new ShredPlaybackChannel(
+	guildID,
+	voiceChannelID,
+	voiceTextChannelID,
+	autoJoin,
+	active
+      );
+      ch.startVoiceConnection(bot);
+      return ch;
+    } catch (err) {
+      console.log(
+	'ERROR: failed to join channel '
+	  +`${voiceChannelID} on guild ${guildID}: `
+	  + err
+      );
+    }
+  }
+
+  static get defaultURI() { return "https://shred.ing/live.ogg"; }
+  static get defaultStreamOptions() { return { voiceDataTimeout: -1 }; }
+  static get defaultRestartPlaybackDelayMS() { return 1500; }
+}
+
+module.exports = ShredPlaybackChannel;