Displays the sum of the lengths of the remaining videos in a playlist
目前為
// ==UserScript==
// @name Display remaining Youtube playlist time
// @namespace https://github.com/Dragosarus/Userscripts/
// @version 4.0
// @description Displays the sum of the lengths of the remaining videos in a playlist
// @author Dragosarus
// @match http://www.youtube.com/*
// @match https://www.youtube.com/*
// @grant none
// @noframes
// @require http://code.jquery.com/jquery-latest.js
// ==/UserScript==
(function() {
'use strict';
/* Time formats:
* 0: "x.xx hours" or "x.xx minutes" or "x seconds"
* 1: xhxmxs (e.g 25m2s or 25m 2s)
* 2: h:mm:ss (e.g 25:02 or 1:00:31 or 0:03)
*/
const showTime = true;
const timeFormat = 1;
/* Percentage formats:
* 0: % watched (e.g. [42% done])
* 1: % remaining (e.g. [58% left])
*/
const showPercentage = false; // e.g. [42% done] (will be shown to the right of the time)
const percentageFormat = 0;
/* true: The duration of the current video is ignored when determining the time left
* false: The duration of the current video is added when determining the time left
*/
const treatCurrentVideoAsWatched = false;
const timeFormat0_decimalPlaces = 2;
const timeFormat0_hourThreshold = 3600; // e.g "3.50" hours instead of "210.00 minutes" or "12600 seconds"
const timeFormat0_minuteThreshold = 60; // e.g "2.50" minutes instead of "150 seconds"
const timeFormat1_spacing = true; // e.g 1h 23m 2s instead of 1h23m2s
const timeFormat1_forceFull = false; // e.g 0h3m2s instead of 3m2s, 3h0m50s instead of 3h50s, etc
const timeFormat2_forceFull = false; // e.g 0:03:02 instead of 3:02
const before = " - "; // ::before
const before_miniplayer = " • ";
const updateCooldown = 2500; // limit how often update() is run (milliseconds)
const time_after = " left) "; // e.g "15h 20m 15s left)"
const time_processing = "..."; // shown after the script has started updating and before it has finished
const incompleteIndicator_time = "(>"; // e.g "(>15h 20m 15s left)", for large playlists (> 200 videos)
const completeIndicator_time = "("; // e.g "(15h 20m 15s left)"
const percentageFormat0_after = "% done]";
const percentageFormat1_after = "% left]";
const incompleteIndicator_percentage = " [~"; // e.g "(10s left) [~20% done]", for large playlists (> 200 videos)
const completeIndicator_percentage = " ["; // e.g "(10s left) [20% done]"
const percentage_decimalPlaces = 1;
const percentage_after = [percentageFormat0_after, percentageFormat1_after];
const percentage_processing = "[...]"; // shown after the script has started updating and before it has finished
const DOWN = false; // direction
const UP = true; // direction
let updateFlagTime = 0;
let time_total_s = 0;
let time_total_s_elapsed = 0; // stores duration of previous videos
let direction_global = DOWN;
let errorFlag = false;
let incompleteFlag = false; // A playlist only displays the 199 previous+next entries in the playlist.
let incompleteFlagR = false; // Used to determine if the percentage is accurate; checks the direction opposite to direction_global
let miniplayerActive = false;
const selectors = {
"currentVideo": "#content ytd-playlist-panel-video-renderer[selected]",
"currentVideo_miniplayer": "div.miniplayer ytd-playlist-panel-video-renderer[selected]",
"drypt_label": "#drypt_label", // created by this script
"drypt_label_miniplayer": "#drypt_label_miniplayer", // created by this script
"playlistHeaderText": "div.index-message-wrapper",
"pytplir_btn": "#content #pytplir_btn", // https://greasyfork.org/en/scripts/404986-play-youtube-playlist-in-reverse-order
"pytplir_btn_miniplayer": "div.miniplayer #pytplir_btn",
"timestamp": "span.ytd-thumbnail-overlay-time-status-renderer",
"unplayableText": "#unplayableText",
"vidCount": ".ytd-watch-flexy #playlist #publisher-container div yt-formatted-string",
"vidCount_miniplayer": "yt-formatted-string[id=owner-name] :nth-child(3)",
"vidNum": "#publisher-container span.index-message",
"vidNum_miniplayer": "yt-formatted-string[id=owner-name]",
"ytd_app": "ytd-app"
};
const playlistObserver = new MutationObserver(observerCallback);
const pytplirObserver = new MutationObserver(pytplirCallback);
const observerOptions = {attributes:true, characterData:true};
initObservers(playlistObserver);
setInterval(check, updateCooldown); // init; then ensure the pytplir button is detected correctly
function observerCallback(mutationList, observer) {
update();
}
function pytplirCallback(mutationList, observer) {
update(true); // force update regardless of cooldown
}
function initObservers(observer) {
try {
observer.observe($(selectors.vidCount)[0], observerOptions);
observer.observe($(selectors.vidCount_miniplayer)[0], observerOptions); // miniplayer
} catch (e) {
setTimeout(function(){initObservers(observer)},100);
}
}
function check() {
miniplayerActive = $(selectors.ytd_app)[0].hasAttribute("miniplayer-active_") || $(selectors.ytd_app)[0].hasAttribute("miniplayer-active");
if (!$(selectors.drypt_label).length || (miniplayerActive && !$(selectors.drypt_label_miniplayer).length)) {
update();
}
let pytplir_btn;
if (miniplayerActive) {
pytplir_btn = document.querySelector(selectors.pytplir_btn_miniplayer);
} else {
pytplir_btn = document.querySelector(selectors.pytplir_btn);
}
if (pytplir_btn) {
pytplir_btn.addEventListener("click", pytplirCallback);
}
}
function update(force=false) {
let timeSinceUpdate = Date.now() - updateFlagTime;
if (timeSinceUpdate < updateCooldown && !force) {
setTimeout(update, updateCooldown - timeSinceUpdate);
return;
}
updateFlagTime = Date.now();
miniplayerActive = $(selectors.ytd_app)[0].hasAttribute("miniplayer-active_") || $(selectors.ytd_app)[0].hasAttribute("miniplayer-active");
let playlistEntry = getCurrentEntry();
if (!playlistEntry) {return;}
display(true); // display message to indicate the script is processing the time left
direction_global = getDirection();
incompleteFlag = false;
incompleteFlagR = false;
if (treatCurrentVideoAsWatched) {
playlistEntry = getNextEntry(playlistEntry, direction_global);
}
time_total_s = 0;
time_total_s_elapsed = 0;
if (playlistEntry) {
addTime(playlistEntry, direction_global);
if (showPercentage) { // also need to sum the video durations in the other direction
let next = getNextEntry(playlistEntry,!direction_global);
if (next) {
addTime(next, !direction_global);
}
}
}
if (!errorFlag){
display();
} else {
setTimeout(update,100);
errorFlag = false;
}
}
function getCurrentEntry(){ // returns <ytd-playlist-panel-video-renderer> element
let elem;
try {
if (miniplayerActive) {
return $(selectors.currentVideo_miniplayer)[0];
} else {
return $(selectors.currentVideo)[0];
}
} catch (e) {
errorFlag = true;
}
}
function getNextEntry(current, direction){
let previous = current;
if (direction) {
current = $(current).prev();
} else {
current = $(current).next();
}
if (current.length) {
if (!current.find(selectors.unplayableText).prop("hidden")) {
return getNextEntry(current, direction);
} else {
return current[0];
}
} else {
checkIncomplete(previous, direction);
return undefined;
}
}
function checkIncomplete(entry, direction) {
let vidNums = getVidNum();
if (vidNums === undefined) { return; }
let num;
try {
num = $(entry).find("#index")[0].innerHTML;
} catch (e) { // most likely, the bottom of the playlist contains a message saying "n unavailable videos"
let lastAvailableNum = $(entry).prev().find("#index")[0].innerHTML; // playlist index of the video before the message
if (!(isNaN(parseInt(lastAvailableNum)))) { // last visible video in the list is not the last "available" one
incompleteFlag = lastAvailableNum === vidNums[1];
} else { // current video is the last "available" one, but there are unavailable videos
incompleteFlag = false;
}
return;
}
let currentVideo = isNaN(parseInt(num)) // ▶ instead of number
if (!currentVideo){ // current video is neither the first nor the last video in the playlist
if (direction == direction_global) {
incompleteFlag = (direction_global == DOWN && num !== vidNums[1]) || (direction_global == UP && num !== "1");
} else {
incompleteFlagR = (direction_global == UP && num !== vidNums[1]) || (direction_global == DOWN && num !== "1");
}
}
}
function getVidNum() { // returns string array [current, total], e.g "32 / 152" => ["32","152"]
let vidNum;
if (miniplayerActive) {
vidNum = $(selectors.vidNum_miniplayer).children()[2].innerHTML;
} else {
try {
// the desired element is hidden; to distinguish from
// other hidden elements, check parent's visibility
vidNum = $(selectors.vidNum).filter(function(){
return $(this).parent().is(":visible");
})[0].innerHTML;
} catch (e) { // e.g. the user switched from one playlist to another
return undefined;
}
}
return vidNum.split(" / ");
}
function getDirection(){ // Compatible with https://greasyfork.org/en/scripts/404986-play-youtube-playlist-in-reverse-order
let pytplir_btn;
if (miniplayerActive) {
pytplir_btn = document.querySelector(selectors.pytplir_btn_miniplayer);
} else {
pytplir_btn = document.querySelector(selectors.pytplir_btn);
}
if (!pytplir_btn) {
return DOWN;
} else {
return $(pytplir_btn).attr("activated") == "true" ? UP : DOWN;
}
}
function addTime(entry, direction) {
let time_raw = getTime(entry);
if (time_raw != "-1") {
if (direction == direction_global){
time_total_s += hmsToSecondsOnly(time_raw);
} else { // in order to calculate % done/remaining
time_total_s_elapsed += hmsToSecondsOnly(time_raw);
}
entry = getNextEntry(entry, direction);
if (entry) {
addTime(entry, direction);
}
} else {
errorFlag = true;
}
}
function getTime(item) {
let unavailable = !$(item).find(selectors.unplayableText).prop("hidden");
if (!unavailable) {
let time = $(item).find(selectors.timestamp);
if (!time.length) {// timestamp has not been loaded yet
return "-1";
} else {
return $.trim(time[0].innerHTML);
}
} else { // unwatchable video => no timestamp
return "0";
}
}
// https://stackoverflow.com/questions/9640266/convert-hhmmss-string-to-seconds-only-in-javascript
function hmsToSecondsOnly(str) {
let p = str.split(':'),
s = 0, m = 1;
while (p.length > 0) {
s += m * parseInt(p.pop(), 10);
m *= 60;
}
if (isNaN(s)) { // Likely caused by premiere video
return 0;
}
return s;
}
function display(showLoading=false) {
let timeString = "";
if (showLoading) { timeString = time_processing; }
else {
let time = formatTime(time_total_s);
if (time == "") {return;} // this is apparently possible
if (showTime) {
let time_before = incompleteFlag ? incompleteIndicator_time : completeIndicator_time; // e.g "(more than " or "( "
timeString = time_before + time + time_after;
}
}
let percentageString = "";
if (showLoading) {percentageString = percentage_processing; }
else if (showPercentage) {
let missingData = incompleteFlag || incompleteFlagR; // due to large playlist
let percentage_before = missingData ? incompleteIndicator_percentage : completeIndicator_percentage;
let playlistTime = time_total_s + time_total_s_elapsed;
let percentage;
switch (percentageFormat) { // determine numerator
case 0: // show % watched
percentage = time_total_s_elapsed;
break;
case 1: // show % remaining
percentage = time_total_s;
break;
}
if (playlistTime != 0){
percentage = 100 * percentage / playlistTime;
if (!Number.isInteger(percentage)) {
percentage = percentage.toFixed(percentage_decimalPlaces);
}
} else { // treatCurrentVideoAsWatched == true and current video is first/last in playlist
percentage = percentageFormat ? 0 : 100;
}
percentageString = percentage_before + percentage + percentage_after[percentageFormat];
}
let textColor = "rgb(237,240,243)";
if (!miniplayerActive) {
if (!$(selectors.drypt_label).length) {
let label = document.createElement("a");
label.setAttribute("font-family","Roboto, Noto, sans-serif");
label.setAttribute("font-size","13px");
label.setAttribute("fill",textColor);
label.setAttribute("id","drypt_label");
$(selectors.playlistHeaderText).filter(":visible")[0].appendChild(label);
}
$(selectors.drypt_label)[0].innerHTML = before + timeString + percentageString;
} else { // miniplayer
if (!$(selectors.drypt_label_miniplayer).length) {
let label_miniplayer = document.createElement("a");
label_miniplayer.setAttribute("font-family","Roboto, Noto, sans-serif");
label_miniplayer.setAttribute("font-size","13px");
label_miniplayer.setAttribute("fill",textColor);
label_miniplayer.setAttribute("id","drypt_label_miniplayer");
$(selectors.vidNum_miniplayer)[0].appendChild(label_miniplayer);
}
$(selectors.drypt_label_miniplayer)[0].innerHTML = before_miniplayer + timeString + percentageString;
}
incompleteFlag = false;
}
function formatTime(time_total_s) {
let formats = [formatTime0, formatTime1, formatTime2];
if (timeFormat > formats.length || timeFormat < 0) {
timeFormat = 0;
}
return formats[timeFormat](time_total_s);
}
function formatTime0(time_total_s) { // "x.xx hours" OR "x.xx minutes" OR "x seconds"
if (time_total_s >= timeFormat0_hourThreshold) {
return (time_total_s / 3600).toFixed(timeFormat0_decimalPlaces) + " hours";
} else if (time_total_s >= timeFormat0_minuteThreshold) {
return (time_total_s / 60).toFixed(timeFormat0_decimalPlaces) + " minutes";
} else {
return time_total_s + " seconds";
}
}
function formatTime1(time_total_s) { // xhxmxs (e.g 25m2s or 25m 2s)
let space = timeFormat1_spacing ? " " : "";
let hh = Math.floor(time_total_s / 3600);
let mm = Math.floor((time_total_s % 3600) / 60);
let ss = time_total_s % 60;
let text = "";
if (hh > 0 || timeFormat1_forceFull) {
text += hh + "h" + space;
};
if (mm > 0 || timeFormat1_forceFull) {
text += mm + "m" + space;
};
if (ss > 0 || timeFormat1_forceFull || !time_total_s) {
text += ss + "s";
};
return text;
}
function formatTime2(time_total_s) { // h:mm:ss (e.g 25:02 or 1:00:31 or 0:03)
let hh = Math.floor(time_total_s / 3600);
let mm = Math.floor((time_total_s % 3600) / 60);
let ss = time_total_s % 60;
let text = "";
if (hh > 0 || timeFormat2_forceFull) {
text += hh + ":";
}
if (hh > 0 && mm > 0) { // 1:01:22
if (mm < 10) {text += "0";}
}
text += mm + ":";
if (ss < 10) {text += "0"}
text += ss;
return text;
}
})();
/*eslint-env jquery*/ // stop eslint from showing "'$' is not defined" warnings