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import {CommandInteraction, MessageActionRow, MessageButton, MessageEmbed, DiscordAPIError} from 'discord.js';
import getYouTubeID from 'get-youtube-id';
import getProgressBar from '../utils/get-progress-bar.js';
import {prettyTime} from '../utils/time.js';
import Player, {STATUS} from './player.js';
const PAGE_SIZE = 10;
const REFRESH_INTERVAL_MS = 5 * 1000;
export enum BUTTON_IDS {
PAGE_BACK = 'page-back',
PAGE_FORWARD = 'page-forward',
TRACK_BACK = 'track-back',
TRACK_FORWARD = 'track-forward',
PAUSE = 'pause',
PLAY = 'play',
}
export default class {
private readonly player: Player;
private interaction?: CommandInteraction;
// 1-indexed
private currentPage = 1;
private refreshTimeout?: NodeJS.Timeout;
constructor(player: Player) {
this.player = player;
this.addEventHandlers();
}
/**
* Creates & replies with a new embed from the given interaction.
* Starts updating the embed at a regular interval.
* Can be called multiple times within the lifecycle of this class.
* Calling this method will make it forgot the previous interaction & reply.
* @param interaction
*/
async createFromInteraction(interaction: CommandInteraction) {
const oldInteraction = this.interaction;
this.resetState();
this.interaction = interaction;
await Promise.all([
interaction.reply({
embeds: [this.buildEmbed()],
components: this.buildButtons(this.player),
}),
(async () => {
if (oldInteraction) {
await oldInteraction.deleteReply();
}
})(),
]);
if (!this.refreshTimeout) {
this.refreshTimeout = setInterval(async () => this.update(), REFRESH_INTERVAL_MS);
}
}
async update(shouldResetPage = false) {
if (shouldResetPage) {
this.currentPage = 1;
}
try {
await this.interaction?.editReply({
embeds: [this.buildEmbed()],
components: this.buildButtons(this.player),
});
} catch (error: unknown) {
if (error instanceof DiscordAPIError) {
// Interaction / message was deleted
if (error.code === 10008) {
this.resetState();
return;
}
}
throw error;
}
}
async pageBack() {
if (this.currentPage > 1) {
this.currentPage--;
}
await this.update();
}
async pageForward() {
if (this.currentPage < this.getMaxPage()) {
this.currentPage++;
}
await this.update();
}
private resetState() {
if (this.refreshTimeout) {
clearInterval(this.refreshTimeout);
this.refreshTimeout = undefined;
}
this.currentPage = 1;
this.interaction = undefined;
}
private buildButtons(player: Player): MessageActionRow[] {
const queuePageControls = new MessageActionRow()
.addComponents(
new MessageButton()
.setCustomId(BUTTON_IDS.PAGE_BACK)
.setStyle('SECONDARY')
.setDisabled(this.currentPage === 1)
.setEmoji('⬅️'),
new MessageButton()
.setCustomId(BUTTON_IDS.PAGE_FORWARD)
.setStyle('SECONDARY')
.setDisabled(this.currentPage >= this.getMaxPage())
.setEmoji('➡️'),
);
const components = [];
components.push(
new MessageButton()
.setCustomId(BUTTON_IDS.TRACK_BACK)
.setStyle('PRIMARY')
.setDisabled(!player.canGoBack())
.setEmoji('⏮'));
if (player.status === STATUS.PLAYING) {
components.push(
new MessageButton()
.setCustomId(BUTTON_IDS.PAUSE)
.setStyle('PRIMARY')
.setDisabled(!player.getCurrent())
.setEmoji('⏸️'));
} else {
components.push(
new MessageButton()
.setCustomId(BUTTON_IDS.PLAY)
.setStyle('PRIMARY')
.setDisabled(!player.getCurrent())
.setEmoji('▶️'));
}
components.push(
new MessageButton()
.setCustomId(BUTTON_IDS.TRACK_FORWARD)
.setStyle('PRIMARY')
.setDisabled(!player.canGoForward(1))
.setEmoji('⏭'),
);
const playerControls = new MessageActionRow().addComponents(components);
return [queuePageControls, playerControls];
}
/**
* Generates an embed for the current page of the queue.
* @returns MessageEmbed
*/
private buildEmbed() {
const currentlyPlaying = this.player.getCurrent();
if (!currentlyPlaying) {
throw new Error('queue is empty');
}
const queueSize = this.player.queueSize();
if (this.currentPage > this.getMaxPage()) {
throw new Error('the queue isn\'t that big');
}
const embed = new MessageEmbed();
embed.setTitle(currentlyPlaying.title);
embed.setURL(`https://www.youtube.com/watch?v=${currentlyPlaying.url.length === 11 ? currentlyPlaying.url : getYouTubeID(currentlyPlaying.url) ?? ''}`);
let description = getProgressBar(20, this.player.getPosition() / currentlyPlaying.length);
description += ' ';
description += `\`[${prettyTime(this.player.getPosition())}/${currentlyPlaying.isLive ? 'live' : prettyTime(currentlyPlaying.length)}]\``;
description += ' 🔉';
description += this.player.isQueueEmpty() ? '' : '\n\n**Next up:**';
embed.setDescription(description);
let footer = `Source: ${currentlyPlaying.artist}`;
if (currentlyPlaying.playlist) {
footer += ` (${currentlyPlaying.playlist.title})`;
}
embed.setFooter(footer);
const queuePageBegin = (this.currentPage - 1) * PAGE_SIZE;
const queuePageEnd = queuePageBegin + PAGE_SIZE;
this.player.getQueue().slice(queuePageBegin, queuePageEnd).forEach((song, i) => {
embed.addField(`${(i + 1 + queuePageBegin).toString()}/${queueSize.toString()}`, song.title, false);
});
embed.addField('Page', `${this.currentPage} out of ${this.getMaxPage()}`, false);
return embed;
}
private getMaxPage() {
return Math.ceil((this.player.queueSize() + 1) / PAGE_SIZE);
}
private addEventHandlers() {
this.player.on('statusChange', async () => this.update(true));
// TODO: also update on other player events
}
}
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