import async from "async"; /** * Migration 3 * * Clean up station object from playlist2 property (replacing old playlist property with playlist2 property), adding a playMode property and removing genres/blacklisted genres * @param {object} MigrationModule - the MigrationModule * @returns {Promise} - returns promise */ export default async function migrate(MigrationModule) { const stationModel = await MigrationModule.runJob("GET_MODEL", { modelName: "station" }, this); return new Promise((resolve, reject) => { async.waterfall( [ next => { this.log("INFO", `Migration 3. Finding stations with document version 2.`); stationModel.find({ documentVersion: 2 }, (err, stations) => { this.log("INFO", `Migration 3. Found ${stations.length} stations with document version 2.`); next( null, stations.map(station => station._doc) ); }); }, (stations, next) => { async.eachLimit( stations, 1, (station, next) => { this.log("INFO", `Migration 3. Updating station ${station._id}.`); stationModel.updateOne( { _id: station._id }, { $set: { playlist: station.playlist2, playMode: "random", documentVersion: 3 }, $unset: { genres: "", blacklistedGenres: "", playlist2: "", privatePlaylist: "" } }, (err, res) => { if (err) next(err); else { this.log( "INFO", `Migration 3. Updating station ${station._id} done. Matched: ${res.n}, modified: ${res.nModified}, ok: ${res.ok}.` ); next(); } } ); }, next ); } ], (err, response) => { if (err) { reject(new Error(err)); } else { resolve(response); } } ); }); }