DRB-CnC/Client/controllers/commandController.js

require('dotenv').config();
// Debug
const { DebugBuilder } = require("../utilities/debugBuilder.js");
const log = new DebugBuilder("client", "commandController");
// Modules
const { joinVoiceChannel, VoiceConnectionStatus, getVoiceConnection, createAudioPlayer, createAudioResource, AudioPlayerStatus } = require("@discordjs/voice");
const { OpusEncoder } = require("@discordjs/opus");
const { calcRmsSync } = require("../utilities/rmsCalculator.js");
// Utilities
const {replyToInteraction} = require("../utilities/messageHandler.js");
const {createAudioInstance} = require("../controllers/audioController.js");
const { all } = require('../routes/index.js');

// Declare the encoder
const encoder = new OpusEncoder(48000, 2);
const noiseGateOpen = process.env.AUDIO_NOISE_GATE_OPEN ?? 100;

/**
 * Join the specified voice channel
 *
 * @param interaction Message interaction from discord
 * @param {string||any} guildID The specified Guild ID if this function is run from the client instead of from an interaction in Discord
 * @param {string||any} channelID The channel ID to join
 * @param guild The guild object to be used to create a voice adapter
 * @param {function} callback The callback that will be needed if this function is run with a Guild ID instead of an interaction
 */
exports.join = async function join({interaction= undefined, guildID= undefined, channelID = undefined, guildObj = undefined,  callback = undefined}){
    if (interaction){
        const voiceChannel = interaction.options.getChannel('voicechannel');
        channelID = voiceChannel.id;
        guildID = interaction.guildId;
        guildObj = interaction.guild;
        if (interaction) replyToInteraction(interaction, `Ok, Joining ${voiceChannel.name}`);
    }
    log.DEBUG("Channel ID: ", channelID)
    log.DEBUG("Guild ID: ", guildID)

    const vcConnectionObj = {
        channelId: channelID,
        guildId: guildID,
        adapterCreator: guildObj.voiceAdapterCreator,
        selfMute: false,
        selfDeaf: false,
    };

    // Join the voice channel
    const voiceConnection = await joinVoiceChannel(vcConnectionObj);

    // Create the audio stream instance
    const audioInstance = await createAudioInstance();
    log.VERBOSE("Audio Instance: ", audioInstance);    

    // Play audio data when it's received from the stream
    audioInstance.on('data', buffer => {
        buffer = Buffer.from(buffer);
        //log.VERBOSE("Audio buffer: ", buffer);
        // Check intensity of audio and only play when audio is present (no white noise/static)
        volume = Math.trunc(calcRmsSync(buffer, buffer.length));

        if (parseInt(volume) > parseInt(noiseGateOpen)) {
            //log.VERBOSE("Noisegate and buffer volume: ", (parseInt(volume) > parseInt(noiseGateOpen)), noiseGateOpen, volume);
            const encodedBuffer = encoder.encode(buffer);            
            voiceConnection.playOpusPacket(encodedBuffer);            
        }
    });

    audioInstance.start();

    // Handle state changes in the voice connection
    voiceConnection.on('stateChange', async (oldState, newState) => {
        //log.VERBOSE("VoiceConnection state Changed from state: ", oldState, "\n\nto state: ", newState);
        log.DEBUG("VoiceConnection state Changed from: ", oldState.status, "to: ", newState.status);

        // Ready -> Connecting
        if (oldState.status === VoiceConnectionStatus.Ready && newState.status === VoiceConnectionStatus.Connecting) {            
            log.DEBUG("Configuring Network");
            voiceConnection.configureNetworking();
            return;           
        }            

        // Ready -> Disconnected
        if (oldState.status === VoiceConnectionStatus.Ready && newState.status === VoiceConnectionStatus.Disconnected) {            
            log.DEBUG("Attempting to reconnect the voice connection");
            voiceConnection = joinVoiceChannel(vcConnectionObj);
            return;
        }

        // Ready
        if (newState.status === VoiceConnectionStatus.Ready){            
            log.DEBUG("Bot connected to voice channel");
            return;
        }

        // Destroyed
        if (newState.status === VoiceConnectionStatus.Destroyed){            
            log.DEBUG("Quitting audio instance");
            audioInstance.quit();
            return;
        }
    });

    voiceConnection.on('error', async (error) => {
        log.ERROR("Voice Connection Error: ", error);
    })

    if (guildID && callback) return callback();
    else return;
}

/**
 * If in a voice channel for the specified guild, leave
 *
 * @param interaction Message interaction from discord
 * @param guildID
 * @param callback
 */
exports.leave = async function leave({interaction = undefined, guildID= undefined, callback = undefined}) {
    if(interaction) {
        guildID = interaction.guild.id;
    }
    const voiceConnection = getVoiceConnection(guildID);

    let response;
    if (!voiceConnection){
        response = "Not in a voice channel."
        if (interaction) return replyToInteraction(interaction, response);
        else callback(response);
    }
    voiceConnection.destroy();

    response = "Goodbye"
    if (interaction) return replyToInteraction(interaction, response);
    else callback(response);
}

/**
 * Get the voice status of the bots
 * @param {*} param0 
 * @returns 
 */
exports.status = async function status({interaction= undefined, guildID= undefined, callback = undefined}) {
    //if (!interaction && !guildID) // Need error of sorts
    if (interaction){
        guildID = interaction.guild.id;
    }
    const voiceConnection = getVoiceConnection(guildID);

    const statusObj = {
        "guildID": guildID,
        "voiceConnection": typeof g !== 'undefined' ? true : false  // True if there is a voice connection, false if undefined 
    }

    log.DEBUG('Status Object: ', statusObj);

    // get the status and return it accordingly (message reply / module)

    if (interaction) {
        return replyToInteraction(interaction, "Pong! I have Aids and now you do too!");
    }
    else {
        callback(statusObj);
    }
}