Takes a streaming history spotify file and sorts the tracks by listening count

sort_spotify_tracks_by_listening_count.js

let fs = require('fs');

let path = process.cwd();

console.log('looking for StreamingHistory.json file in ' + path + '\\data\\');

let buffer = {};
try {
    buffer = fs.readFileSync(path + "\\data\\StreamingHistory.json");
} catch (e) {
    console.log("ERROR: File not found in " + e.path);
    return;
}

let tracks = JSON.parse(buffer.toString());

let trackCount = {};
let stringifiedTrack = '';

// associate a count to each track
tracks.forEach((track) => {
    delete track.time;
    let stringifiedTrack = JSON.stringify(track);
	
    if (!trackCount[stringifiedTrack])
		trackCount[stringifiedTrack] = 1;
	else
		trackCount[stringifiedTrack]++;
});

let tracksWithCount = [];
let trackWithCount = {};

// create track objects with a count property
for (track in trackCount) {
    trackWithCount = JSON.parse(track);
    trackWithCount.count = trackCount[track];
    
    tracksWithCount.push(trackWithCount);
}

// sort the tracks by count (number of times listened)
tracksWithCount.sort((a, b) => {
    return (a.count > b.count) ? -1 : (a.count < b.count) ? 1 : 0;
});

// save the results
let resultsFilePath = path + "\\TracksByListeningCount.json";
fs.writeFile(resultsFilePath, JSON.stringify(tracksWithCount), (err) => {
    if (err) {
        console.log(err);
    }
    
    console.log("The results were saved to " + resultsFilePath);
});