cpt-waffle-lotide/src/musicLibrary.js

LoTide in Typescript

"use strict";
;
;
const library = {
    tracks: {
        t01: {
            id: "t01",
            name: "Code Monkey",
            artist: "Jonathan Coulton",
            album: "Thing a Week Three"
        },
        t02: {
            id: "t02",
            name: "Model View Controller",
            artist: "James Dempsey",
            album: "WWDC 2003"
        },
        t03: {
            id: "t03",
            name: "Four Thirty-Three",
            artist: "John Cage",
            album: "Woodstock 1952"
        }
    },
    playlists: {
        p01: {
            id: "p01",
            name: "Coding Music",
            tracks: ["t01", "t02"]
        },
        p02: {
            id: "p02",
            name: "Other Playlist",
            tracks: ["t03"]
        }
    },
    printPlaylists: undefined,
    printTracks: undefined,
    printPlaylist: undefined,
    addTrackToPlaylist: undefined,
    addTrack: undefined,
    addPlaylist: undefined
};
const printPlaylists = function () {
    const { playlists } = this;
    const playlistsKeys = Object.keys(library.playlists);
    playlistsKeys.forEach((id) => {
        console.log(`${id}: ${playlists[id].name} - ${playlists[id].tracks.length} tracks`);
    });
};
library.printPlaylists = printPlaylists;
const printTracks = function () {
    const { tracks } = this;
    const tracksKeys = Object.keys(tracks);
    tracksKeys.forEach((item) => {
        const { id, name, artist } = library.tracks[item];
        console.log(`${id}: ${name} by ${artist}`);
    });
};
const printPlaylist = function (playlistId) {
    const { playlists } = this;
    console.log(`${playlistId}: ${playlists[playlistId].name} ${playlists[playlistId].tracks.length} - tracks`);
};
library.printPlaylist = printPlaylist;
const addTrackToPlaylist = function (trackId, playlistId) {
    library.playlists[playlistId].tracks.push(trackId);
};
library.addTrackToPlaylist = addTrackToPlaylist;
const generateUid = function () {
    return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
};
const addTrack = function (name, artist, album) {
    const id = `t${generateUid()}`;
    const track = { id, name, artist, album };
    library.tracks[id] = track;
};
library.addTrack = addTrack;
const addPlaylist = function (name) {
    const id = `p${generateUid()}`;
    const playlist = { id, name, tracks: [] };
    library.playlists[id] = playlist;
};
library.addPlaylist = addPlaylist;