A userscript that sorts comments by reaction
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// ==UserScript==
// @name GitHub Sort Reactions
// @version 0.1.0
// @description A userscript that sorts comments by reaction
// @license MIT
// @author Rob Garrison
// @namespace https://github.com/Mottie
// @include https://github.com/*
// @run-at document-idle
// @grant GM_addStyle
// @require https://greasyfork.org/scripts/28721-mutations/code/mutations.js?version=198500
// @icon https://assets-cdn.github.com/pinned-octocat.svg
// ==/UserScript==
(() => {
"use strict";
const nonInteger = /[^\d]/g,
reactionValues = {
"THUMBS_UP": 1,
"HOORAY": 1,
"HEART": 1,
"LAUGH": 0.5,
"CONFUSED": -0.5,
"THUMBS_DOWN": -1
},
currentSort = {
init: false,
el: null,
dir: 0, // 0 = unsorted, 1 = desc, 2 = asc
busy: false
},
sortBlock = `
<div class="timeline-comment-wrapper ghsc-sort-block">
<div class="timeline-comment">
<div class="avatar-parent-child timeline-comment-avatar position-relative">
<svg aria-hidden="true" class="octicon ghsc-sort-icon" xmlns="http://www.w3.org/2000/svg" width="32" height="44" viewBox="0 0 16 16">
<path d="M15 8 1 8 8 0zM15 9 1 9 8 16z"/>
</svg>
</div>
<div class="timeline-comment-header comment comment-body">
<h3 class="timeline-comment-header-text f5 text-normal">
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by +1 reaction" data-sort="THUMBS_UP">
<g-emoji alias="+1" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f44d.png">?</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by -1 reaction" data-sort="THUMBS_DOWN">
<g-emoji alias="-1" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f44e.png">?</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by laugh reaction" data-sort="LAUGH">
<g-emoji alias="smile" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f604.png">?</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by hooray reaction" data-sort="HOORAY">
<g-emoji alias="tada" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f389.png">?</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by confused reaction" data-sort="CONFUSED">
<g-emoji alias="thinking_face" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f615.png">?</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n" type="button" aria-label="Sort by heart reaction" data-sort="HEART">
<g-emoji alias="heart" class="emoji mr-1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/2764.png">❤️</g-emoji>
</button>
<button class="ghsc-sort-button btn btn-sm tooltipped tooltipped-n tooltipped-multiline" type="button" aria-label="Sort by reaction evaluation
(thumbs up, hooray & heart = +1;
laugh = +0.5; confused = -0.5;
thumbs down = -1)" data-sort="ACTIVE">
<g-emoji class="g-emoji" alias="speak_no_evil" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f64a.png" ios-version="6.0">?</g-emoji>
</button>
</h3>
</div>
</div>
</div>`;
function sumOfReactions(el) {
return Object.keys(reactionValues).reduce((sum, item) => {
const elm = $(`.comment-reactions-options button[value*="${item}"]`, el);
return sum + (getValue(elm) * reactionValues[item]);
}, 0);
}
function getValue(elm) {
return elm ?
parseInt(elm.textContent.replace(nonInteger, "") || "0", 10) :
0;
}
function extractSortValue(elm, type) {
if (type === "NONE" || type === "ACTIVE") {
return parseFloat(
elm.dataset[`sortComment${type === "NONE" ? "Date" : "Sum"}`]
);
}
return getValue($(`.comment-reactions button[value*="${type}"]`, elm));
}
function stableSortValue(elm) {
return parseInt(elm.dataset.sortCommentDate, 10);
}
function sort() {
currentSort.busy = true;
const fragment = document.createDocumentFragment(),
container = $(".js-discussion"),
sortBlock = $(".ghsc-sort-block"),
loadMore = $("#progressive-timeline-item-container"),
dir = currentSort.dir !== 1,
type = currentSort.el ? currentSort.el.dataset.sort : "NONE";
$$(".js-timeline-item")
.sort((a, b) => {
const av = extractSortValue(a, type),
bv = extractSortValue(b, type);
if (av === bv) {
return stableSortValue(a) - stableSortValue(b);
}
return dir ? av - bv : bv - av;
})
.forEach(el => {
fragment.appendChild(el);
});
container.appendChild(fragment);
if (loadMore) {
// Move load more comments to top
sortBlock.parentNode.insertBefore(loadMore, sortBlock.nextSibling);
}
setTimeout(() => {
currentSort.busy = false;
}, 100);
}
function update() {
if (!currentSort.init || $$(".has-reactions").length < 2) {
return toggleSortBlock(false);
}
toggleSortBlock(true);
const items = $$(".js-timeline-item:not([data-sort-comment-date])");
if (items) {
items.forEach(el => {
let date = $("[datetime]", el);
if (date) {
date = date.getAttribute("datetime");
el.setAttribute("data-sort-comment-date", Date.parse(date));
}
// Add reset date & most active summation
el.setAttribute("data-sort-comment-sum", sumOfReactions(el));
});
}
if (currentSort.el && !currentSort.busy) {
sort();
}
}
function initSort(event) {
const target = event.target;
if (target.classList.contains("ghsc-sort-button")) {
event.preventDefault();
event.stopPropagation();
$$(".ghsc-sort-button").forEach(el => {
el.classList.toggle("selected", el === target);
el.classList.remove("asc", "desc");
});
if (currentSort.el === target) {
currentSort.dir = (currentSort.dir + 1) % 3;
} else {
currentSort.el = target;
currentSort.dir = 1;
}
if (currentSort.dir === 0) {
currentSort.el.classList.remove("asc", "desc", "selected");
currentSort.el = null;
} else {
currentSort.el.classList.add(currentSort.dir === 1 ? "desc" : "asc");
}
sort();
}
}
function toggleSortBlock(status) {
if (status) {
if ($(".ghsc-sort-block")) {
$(".ghsc-sort-block").style.display = "block";
} else {
addSortBlock();
}
} else {
if ($(".ghsc-sort-block")) {
$(".ghsc-sort-block").style.display = "none";
}
}
}
function addSortBlock() {
currentSort.busy = true;
const first = $(".timeline-comment-wrapper");
first.classList.add("ghsc-skip-sort");
first.insertAdjacentHTML("afterEnd", sortBlock);
currentSort.busy = false;
}
function init() {
if (!currentSort.init) {
GM_addStyle(`
.ghsc-sort-icon { padding-left: 5px; }
.ghsc-sort-block .comment-body { padding: 0 10px; }
.ghsc-sort-block g-emoji { vertical-align: baseline; pointer-events: none; }
.ghsc-sort-block .btn.asc g-emoji:after { content: "▲"; }
.ghsc-sort-block .btn.desc g-emoji:after { content: "▼"; }
`);
document.addEventListener("ghmo:container", update);
document.addEventListener("ghmo:comments", update);
document.addEventListener("click", initSort);
currentSort.init = true;
update();
}
}
function $(selector, el) {
return (el || document).querySelector(selector);
}
function $$(selector, el) {
return [...(el || document).querySelectorAll(selector)];
}
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", update, {once: true});
} else {
init();
}
})();