mirror of
https://github.com/20kaushik02/spotify-manager.git
synced 2025-12-06 12:54:07 +00:00
731 lines
21 KiB
JavaScript
731 lines
21 KiB
JavaScript
const typedefs = require("../typedefs");
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const logger = require("../utils/logger")(module);
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const { getUserPlaylistsFirstPage, getUserPlaylistsNextPage, getPlaylistDetailsFirstPage, getPlaylistDetailsNextPage, addItemsToPlaylist, removeItemsFromPlaylist, checkPlaylistEditable } = require("../api/spotify");
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const { parseSpotifyLink } = require("../utils/spotifyURITransformer");
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const { randomBool, sleep } = require("../utils/flake");
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const myGraph = require("../utils/graph");
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const { Op } = require("sequelize");
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const { sequelize } = require("../models");
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/** @type {typedefs.Model} */
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const Playlists = require("../models").playlists;
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/** @type {typedefs.Model} */
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const Links = require("../models").links;
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/**
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* Sync user's Spotify data
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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*/
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const updateUser = async (req, res) => {
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try {
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let currentPlaylists = [];
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const uID = req.session.user.id;
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// get first 50
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const respData = await getUserPlaylistsFirstPage(req, res);
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if (res.headersSent) return;
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currentPlaylists = respData.items.map(playlist => {
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return {
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playlistID: playlist.id,
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playlistName: playlist.name
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}
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});
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let nextURL = respData.next;
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// keep getting batches of 50 till exhausted
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while (nextURL) {
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const nextData = await getUserPlaylistsNextPage(req, res, nextURL);
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if (res.headersSent) return;
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currentPlaylists.push(
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...nextData.items.map(playlist => {
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return {
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playlistID: playlist.id,
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playlistName: playlist.name
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}
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})
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);
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nextURL = nextData.next;
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}
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let oldPlaylists = await Playlists.findAll({
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attributes: ["playlistID", "playlistName"],
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raw: true,
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where: {
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userID: uID
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},
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});
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const deleted = [];
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const added = [];
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const renamed = [];
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if (oldPlaylists.length) {
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const oldMap = new Map(oldPlaylists.map((p) => [p.playlistID, p]));
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const currentMap = new Map(currentPlaylists.map((p) => [p.playlistID, p]));
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// Check for added and renamed playlists
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currentPlaylists.forEach((pl) => {
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const oldPlaylist = oldMap.get(pl.playlistID);
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if (!oldPlaylist) {
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added.push(pl);
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} else if (oldPlaylist.playlistName !== pl.playlistName) {
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// Renamed playlists
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renamed.push({
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playlistID: pl.playlistID,
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oldName: oldPlaylist.playlistName,
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newName: pl.playlistName,
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});
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}
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});
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// Check for deleted playlists
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oldPlaylists.forEach((pl) => {
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if (!currentMap.has(pl.playlistID)) {
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deleted.push(pl);
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}
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});
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} else {
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// new user
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added.push(...currentPlaylists);
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}
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let removedLinks = 0, delNum = 0, updateNum = 0, addPls = [];
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const deletedIDs = deleted.map(pl => pl.playlistID);
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if (deleted.length) {
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// clean up any links dependent on the playlists
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removedLinks = await Links.destroy({
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where: {
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[Op.and]: [
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{ userID: uID },
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{
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[Op.or]: [
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{ from: { [Op.in]: deletedIDs } },
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{ to: { [Op.in]: deletedIDs } },
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]
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}
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]
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}
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})
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// only then remove
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delNum = await Playlists.destroy({
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where: { playlistID: deletedIDs, userID: uID }
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});
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if (delNum !== deleted.length) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.warn("Could not remove all old playlists", { error: new Error("Playlists.destroy failed?") });
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return;
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}
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}
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if (added.length) {
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addPls = await Playlists.bulkCreate(
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added.map(pl => { return { ...pl, userID: uID } }),
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{ validate: true }
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);
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if (addPls.length !== added.length) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("Could not add all new playlists", { error: new Error("Playlists.bulkCreate failed?") });
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return;
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}
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}
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const transaction = await sequelize.transaction();
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try {
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for (const { playlistID, newName } of renamed) {
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const updateRes = await Playlists.update(
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{ playlistName: newName },
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{ where: { playlistID, userID: uID } },
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{ transaction }
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);
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updateNum += Number(updateRes[0]);
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}
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await transaction.commit();
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} catch (error) {
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await transaction.rollback();
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("Could not update playlist names", { error: new Error("Playlists.update failed?") });
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return;
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}
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res.status(200).send({ message: "Updated user data.", removedLinks: removedLinks > 0 });
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logger.debug("Updated user data", {
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delLinks: removedLinks,
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delPls: delNum,
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addPls: addPls.length,
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updatedPls: updateNum
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});
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return;
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} catch (error) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("updateUser", { error });
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return;
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}
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}
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/**
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* Fetch user's stored playlists and links
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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*/
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const fetchUser = async (req, res) => {
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try {
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// if (randomBool(0.5)) {
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// res.status(404).send({ message: "Not Found" });
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// return;
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// }
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const uID = req.session.user.id;
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const currentPlaylists = await Playlists.findAll({
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attributes: ["playlistID", "playlistName"],
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raw: true,
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where: {
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userID: uID
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},
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});
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const currentLinks = await Links.findAll({
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attributes: ["from", "to"],
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raw: true,
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where: {
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userID: uID
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},
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});
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res.status(200).send({
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playlists: currentPlaylists,
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links: currentLinks
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});
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logger.debug("Fetched user data", { pls: currentPlaylists.length, links: currentLinks.length });
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return;
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} catch (error) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("fetchUser", { error });
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return;
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}
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}
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/**
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* Create link between playlists!
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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*/
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const createLink = async (req, res) => {
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try {
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// await sleep(1000);
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const uID = req.session.user.id;
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let fromPl, toPl;
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try {
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fromPl = parseSpotifyLink(req.body.from);
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toPl = parseSpotifyLink(req.body.to);
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if (fromPl.type !== "playlist" || toPl.type !== "playlist") {
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res.status(400).send({ message: "Link is not a playlist" });
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logger.info("non-playlist link provided", { from: fromPl, to: toPl });
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return;
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}
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} catch (error) {
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res.status(400).send({ message: "Could not parse link" });
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logger.warn("parseSpotifyLink", { error });
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return;
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}
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let playlists = await Playlists.findAll({
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attributes: ["playlistID"],
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raw: true,
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where: { userID: uID }
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});
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playlists = playlists.map(pl => pl.playlistID);
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// if playlists are unknown
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if (![fromPl, toPl].every(pl => playlists.includes(pl.id))) {
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res.status(404).send({ message: "Playlists out of sync." });
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logger.warn("unknown playlists, resync");
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return;
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}
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// check if exists
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const existingLink = await Links.findOne({
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where: {
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[Op.and]: [
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{ userID: uID },
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{ from: fromPl.id },
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{ to: toPl.id }
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]
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}
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});
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if (existingLink) {
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res.status(409).send({ message: "Link already exists!" });
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logger.info("link already exists");
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return;
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}
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const allLinks = await Links.findAll({
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attributes: ["from", "to"],
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raw: true,
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where: { userID: uID }
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});
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const newGraph = new myGraph(playlists, [...allLinks, { from: fromPl.id, to: toPl.id }]);
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if (newGraph.detectCycle()) {
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res.status(400).send({ message: "Proposed link cannot cause a cycle in the graph" });
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logger.warn("potential cycle detected");
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return;
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}
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const newLink = await Links.create({
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userID: uID,
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from: fromPl.id,
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to: toPl.id
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});
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if (!newLink) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("Could not create link", { error: new Error("Links.create failed?") });
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return;
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}
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res.status(201).send({ message: "Created link." });
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logger.debug("Created link");
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return;
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} catch (error) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("createLink", { error });
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return;
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}
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}
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/**
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* Remove link between playlists
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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*/
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const removeLink = async (req, res) => {
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try {
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const uID = req.session.user.id;
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let fromPl, toPl;
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try {
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fromPl = parseSpotifyLink(req.body.from);
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toPl = parseSpotifyLink(req.body.to);
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if (fromPl.type !== "playlist" || toPl.type !== "playlist") {
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res.status(400).send({ message: "Link is not a playlist" });
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logger.info("non-playlist link provided", { from: fromPl, to: toPl });
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return;
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}
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} catch (error) {
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res.status(400).send({ message: "Could not parse link" });
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logger.warn("parseSpotifyLink", { error });
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return;
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}
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// check if exists
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const existingLink = await Links.findOne({
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where: {
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[Op.and]: [
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{ userID: uID },
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{ from: fromPl.id },
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{ to: toPl.id }
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]
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}
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});
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if (!existingLink) {
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res.status(409).send({ message: "Link does not exist!" });
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logger.warn("link does not exist");
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return;
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}
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const removedLink = await Links.destroy({
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where: {
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[Op.and]: [
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{ userID: uID },
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{ from: fromPl.id },
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{ to: toPl.id }
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]
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}
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});
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if (!removedLink) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("Could not remove link", { error: new Error("Links.destroy failed?") });
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return;
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}
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res.status(200).send({ message: "Deleted link." });
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logger.debug("Deleted link");
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return;
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} catch (error) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("removeLink", { error });
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return;
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}
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}
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/**
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* Add tracks to the link-head playlist,
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* that are present in the link-tail playlist but not in the link-head playlist,
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* in the order that they are present in the link-tail playlist.
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*
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* eg.
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*
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* pl_a has tracks: a, b, c
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*
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* pl_b has tracks: e, b, d
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*
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* link from pl_a to pl_b exists
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*
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* after populateMissingInLink, pl_a will have tracks: a, b, c, e, d
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*
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* CANNOT populate local files; Spotify API does not support it yet.
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*
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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* @param {{from: typedefs.URIObject, to: typedefs.URIObject}} link
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* @returns {Promise<{toAddNum: number, localNum: number} | undefined>}
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*/
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const _populateSingleLinkCore = async (req, res, link) => {
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try {
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const fromPl = link.from, toPl = link.to;
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let initialFields = ["tracks(next,items(is_local,track(uri)))"];
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let mainFields = ["next", "items(is_local,track(uri))"];
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const fromData = await getPlaylistDetailsFirstPage(req, res, initialFields.join(), fromPl.id);
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if (res.headersSent) return;
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let fromPlaylist = {};
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// varying fields again smh
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if (fromData.tracks.next) {
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fromPlaylist.next = new URL(fromData.tracks.next);
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fromPlaylist.next.searchParams.set("fields", mainFields.join());
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fromPlaylist.next = fromPlaylist.next.href;
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}
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fromPlaylist.tracks = fromData.tracks.items.map((playlist_item) => {
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return {
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is_local: playlist_item.is_local,
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uri: playlist_item.track.uri
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}
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});
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// keep getting batches of 50 till exhausted
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while (fromPlaylist.next) {
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const nextData = await getPlaylistDetailsNextPage(req, res, fromPlaylist.next);
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if (res.headersSent) return;
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fromPlaylist.tracks.push(
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...nextData.items.map((playlist_item) => {
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return {
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is_local: playlist_item.is_local,
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uri: playlist_item.track.uri
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}
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})
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);
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fromPlaylist.next = nextData.next;
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}
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delete fromPlaylist.next;
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const toData = await getPlaylistDetailsFirstPage(req, res, initialFields.join(), toPl.id);
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if (res.headersSent) return;
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let toPlaylist = {};
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// varying fields again smh
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if (toData.tracks.next) {
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toPlaylist.next = new URL(toData.tracks.next);
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toPlaylist.next.searchParams.set("fields", mainFields.join());
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toPlaylist.next = toPlaylist.next.href;
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}
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toPlaylist.tracks = toData.tracks.items.map((playlist_item) => {
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return {
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is_local: playlist_item.is_local,
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uri: playlist_item.track.uri
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}
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});
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// keep getting batches of 50 till exhausted
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while (toPlaylist.next) {
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const nextData = await getPlaylistDetailsNextPage(req, res, toPlaylist.next);
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if (res.headersSent) return;
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toPlaylist.tracks.push(
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...nextData.items.map((playlist_item) => {
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return {
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is_local: playlist_item.is_local,
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uri: playlist_item.track.uri
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}
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})
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);
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toPlaylist.next = nextData.next;
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}
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delete toPlaylist.next;
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const fromTrackURIs = fromPlaylist.tracks.map(track => track.uri);
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let toTrackURIs = toPlaylist.tracks.
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filter(track => !track.is_local). // API doesn't support adding local files to playlists yet
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filter(track => !fromTrackURIs.includes(track.uri)). // only ones missing from the 'from' playlist
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map(track => track.uri);
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const toAddNum = toTrackURIs.length;
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const localNum = toPlaylist.tracks.filter(track => track.is_local).length;
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// append to end in batches of 100
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while (toTrackURIs.length > 0) {
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const nextBatch = toTrackURIs.splice(0, 100);
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const addData = await addItemsToPlaylist(req, res, nextBatch, fromPl.id);
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if (res.headersSent) return;
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}
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return { toAddNum, localNum };
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} catch (error) {
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res.status(500).send({ message: "Internal Server Error" });
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logger.error("_populateSingleLinkCore", { error });
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return;
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}
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}
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|
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/**
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* @param {typedefs.Req} req
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* @param {typedefs.Res} res
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*/
|
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const populateSingleLink = async (req, res) => {
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try {
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const uID = req.session.user.id;
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const link = { from: req.body.from, to: req.body.to };
|
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let fromPl, toPl;
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try {
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fromPl = parseSpotifyLink(link.from);
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toPl = parseSpotifyLink(link.to);
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if (fromPl.type !== "playlist" || toPl.type !== "playlist") {
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res.status(400).send({ message: "Link is not a playlist" });
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logger.info("non-playlist link provided", link);
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return;
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}
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} catch (error) {
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res.status(400).send({ message: "Could not parse link" });
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logger.warn("parseSpotifyLink", { error });
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return;
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}
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|
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// check if exists
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const existingLink = await Links.findOne({
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where: {
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[Op.and]: [
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{ userID: uID },
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{ from: fromPl.id },
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{ to: toPl.id }
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]
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}
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});
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if (!existingLink) {
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res.status(409).send({ message: "Link does not exist!" });
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logger.warn("link does not exist", { link });
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return;
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}
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|
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if (!await checkPlaylistEditable(req, res, fromPl.id, uID))
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return;
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|
|
const result = await _populateSingleLinkCore(req, res, { from: fromPl, to: toPl });
|
|
if (result) {
|
|
let logMsg;
|
|
logMsg = result.toAddNum > 0 ? "Added " + result.toAddNum + " tracks" : "No tracks to add";
|
|
logMsg += result.localNum > 0 ? ", but could not add " + result.localNum + " local files" : ".";
|
|
|
|
res.status(200).send({ message: logMsg });
|
|
logger.debug(logMsg);
|
|
return;
|
|
}
|
|
} catch (error) {
|
|
res.status(500).send({ message: "Internal Server Error" });
|
|
logger.error("populateSingleLink", { error });
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove tracks from the link-tail playlist,
|
|
* that are present in the link-tail playlist but not in the link-head playlist.
|
|
*
|
|
* eg.
|
|
*
|
|
* pl_a has tracks: a, b, c
|
|
*
|
|
* pl_b has tracks: e, b, d, c, f, g
|
|
*
|
|
* link from pl_a to pl_b exists
|
|
*
|
|
* after pruneSingleLink, pl_b will have tracks: b, c
|
|
*
|
|
* @param {typedefs.Req} req
|
|
* @param {typedefs.Res} res
|
|
*/
|
|
const pruneSingleLink = async (req, res) => {
|
|
try {
|
|
const uID = req.session.user.id;
|
|
const link = { from: req.body.from, to: req.body.to };
|
|
|
|
let fromPl, toPl;
|
|
try {
|
|
fromPl = parseSpotifyLink(link.from);
|
|
toPl = parseSpotifyLink(link.to);
|
|
if (fromPl.type !== "playlist" || toPl.type !== "playlist") {
|
|
res.status(400).send({ message: "Link is not a playlist" });
|
|
logger.info("non-playlist link provided", link);
|
|
return;
|
|
}
|
|
} catch (error) {
|
|
res.status(400).send({ message: error.message });
|
|
logger.warn("parseSpotifyLink", { error });
|
|
return;
|
|
}
|
|
|
|
// check if exists
|
|
const existingLink = await Links.findOne({
|
|
where: {
|
|
[Op.and]: [
|
|
{ userID: uID },
|
|
{ from: fromPl.id },
|
|
{ to: toPl.id }
|
|
]
|
|
}
|
|
});
|
|
if (!existingLink) {
|
|
res.status(409).send({ message: "Link does not exist!" });
|
|
logger.warn("link does not exist", { link });
|
|
return;
|
|
}
|
|
|
|
if (!await checkPlaylistEditable(req, res, toPl.id, uID))
|
|
return;
|
|
|
|
let initialFields = ["snapshot_id", "tracks(next,items(is_local,track(uri)))"];
|
|
let mainFields = ["next", "items(is_local,track(uri))"];
|
|
|
|
const fromData = await getPlaylistDetailsFirstPage(req, res, initialFields.join(), fromPl.id);
|
|
if (res.headersSent) return;
|
|
|
|
let fromPlaylist = {};
|
|
// varying fields again smh
|
|
fromPlaylist.snapshot_id = fromData.snapshot_id;
|
|
if (fromData.tracks.next) {
|
|
fromPlaylist.next = new URL(fromData.tracks.next);
|
|
fromPlaylist.next.searchParams.set("fields", mainFields.join());
|
|
fromPlaylist.next = fromPlaylist.next.href;
|
|
}
|
|
fromPlaylist.tracks = fromData.tracks.items.map((playlist_item) => {
|
|
return {
|
|
is_local: playlist_item.is_local,
|
|
uri: playlist_item.track.uri
|
|
}
|
|
});
|
|
|
|
// keep getting batches of 50 till exhausted
|
|
while (fromPlaylist.next) {
|
|
const nextData = await getPlaylistDetailsNextPage(req, res, fromPlaylist.next);
|
|
if (res.headersSent) return;
|
|
|
|
fromPlaylist.tracks.push(
|
|
...nextData.items.map((playlist_item) => {
|
|
return {
|
|
is_local: playlist_item.is_local,
|
|
uri: playlist_item.track.uri
|
|
}
|
|
})
|
|
);
|
|
|
|
fromPlaylist.next = nextData.next;
|
|
}
|
|
|
|
delete fromPlaylist.next;
|
|
|
|
const toData = await getPlaylistDetailsFirstPage(req, res, initialFields.join(), toPl.id);
|
|
if (res.headersSent) return;
|
|
|
|
let toPlaylist = {};
|
|
// varying fields again smh
|
|
toPlaylist.snapshot_id = toData.snapshot_id;
|
|
if (toData.tracks.next) {
|
|
toPlaylist.next = new URL(toData.tracks.next);
|
|
toPlaylist.next.searchParams.set("fields", mainFields.join());
|
|
toPlaylist.next = toPlaylist.next.href;
|
|
}
|
|
toPlaylist.tracks = toData.tracks.items.map((playlist_item) => {
|
|
return {
|
|
is_local: playlist_item.is_local,
|
|
uri: playlist_item.track.uri
|
|
}
|
|
});
|
|
|
|
// keep getting batches of 50 till exhausted
|
|
while (toPlaylist.next) {
|
|
const nextData = await getPlaylistDetailsNextPage(req, res, toPlaylist.next);
|
|
if (res.headersSent) return;
|
|
|
|
toPlaylist.tracks.push(
|
|
...nextData.items.map((playlist_item) => {
|
|
return {
|
|
is_local: playlist_item.is_local,
|
|
uri: playlist_item.track.uri
|
|
}
|
|
})
|
|
);
|
|
|
|
toPlaylist.next = nextData.next;
|
|
}
|
|
|
|
delete toPlaylist.next;
|
|
|
|
const fromTrackURIs = fromPlaylist.tracks.map(track => track.uri);
|
|
let indexedToTrackURIs = toPlaylist.tracks;
|
|
|
|
indexedToTrackURIs.forEach((track, index) => {
|
|
track.position = index;
|
|
});
|
|
|
|
let indexes = indexedToTrackURIs.filter(track => !fromTrackURIs.includes(track.uri)); // only those missing from the 'from' playlist
|
|
indexes = indexes.map(track => track.position); // get track positions
|
|
|
|
const toDelNum = indexes.length;
|
|
|
|
// remove in batches of 100 (from reverse, to preserve positions while modifying)
|
|
let currentSnapshot = toPlaylist.snapshot_id;
|
|
while (indexes.length) {
|
|
const nextBatch = indexes.splice(Math.max(indexes.length - 100, 0), 100);
|
|
const delResponse = await removeItemsFromPlaylist(req, res, nextBatch, toPl.id, currentSnapshot);
|
|
if (res.headersSent) return;
|
|
currentSnapshot = delResponse.snapshot_id;
|
|
}
|
|
|
|
res.status(200).send({ message: `Removed ${toDelNum} tracks.` });
|
|
logger.debug(`Pruned ${toDelNum} tracks`);
|
|
return;
|
|
} catch (error) {
|
|
res.status(500).send({ message: "Internal Server Error" });
|
|
logger.error("pruneSingleLink", { error });
|
|
return;
|
|
}
|
|
}
|
|
|
|
module.exports = {
|
|
updateUser,
|
|
fetchUser,
|
|
createLink,
|
|
removeLink,
|
|
populateSingleLink,
|
|
populateLinksPropagate,
|
|
pruneSingleLink,
|
|
};
|