Displays total length of albums on bandcamp.com
// ==UserScript==
// @name Bandcamp Total Duration
// @version 1
// @description Displays total length of albums on bandcamp.com
// @grant none
// @include https://*.bandcamp.com/album/*
// @include https://music.businesscasual.biz/album/*
// @include https://listen.20buckspin.com/album/*
// @namespace https://greasyfork.org/users/708837
// ==/UserScript==
//this script will not run on custom bandcamp domains unless they are added to the above @include list
var allDurations, totalDuration, totalSeconds, totalMinutes, description, releaseDate;
//find all instances of song lengths
allDurations = document.evaluate(
"//span[@class='time secondaryText']",
document,
null,
XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE,
null);
//parse the times and add them
totalSeconds = 0;
totalMinutes = 0;
for (var i = 0; i < allDurations.snapshotLength; i++) {
totalMinutes += Number(allDurations.snapshotItem(i).firstChild.data.trim().split(":")[0]);
totalSeconds += Number(allDurations.snapshotItem(i).firstChild.data.trim().split(":")[1]);
}
//convert to total time
finalSeconds = totalSeconds % 60
finalMinutes = totalMinutes + Math.floor(totalSeconds / 60);
totalDuration = finalMinutes + ':' + finalSeconds;
//console.log('Total Duration: ' + totalDuration);
//add as first line in description box
description = document.getElementsByClassName('tralbumData tralbum-about');
if (description.length) {
description[0].innerText = 'Length: ' + totalDuration + '\n\n' + description[0].innerText;
}
//if no description box exists, add as line above release date
else {
releaseDate = document.getElementsByClassName('tralbumData tralbum-credits');
console.log(releaseDate[0].innerText);
if (releaseDate.length) {
releaseDate[0].innerText = 'Length: ' + totalDuration + '\n\n' + releaseDate[0].innerText
}
}