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Convert relative times on GitHub to absolute date and time
// ==UserScript==
// @name Github Time Format Converter
// @name:zh-CN Github 时间格式转换
// @name:zh-TW Github 時間格式轉換
// @description Convert relative times on GitHub to absolute date and time
// @description:zh-CN 将 GitHub 页面上的相对时间转换为绝对日期和时间
// @description:zh-TW 將 GitHub 頁面上的相對時間轉換成絕對日期與時間
// @version 1.3.0
// @icon https://raw.githubusercontent.com/MiPoNianYou/UserScripts/main/Icons/Github-Time-Format-Converter-Icon.svg
// @author 念柚
// @namespace https://github.com/MiPoNianYou/UserScripts
// @supportURL https://github.com/MiPoNianYou/UserScripts/issues
// @license AGPL-3.0
// @match https://github.com/*
// @exclude https://github.com/topics/*
// @grant GM_addStyle
// @run-at document-idle
// ==/UserScript==
(function () {
"use strict";
const CONFIG = {
SETTINGS: {
TOOLTIP_OFFSET: 5,
EDGE_MARGIN: 5,
TRANSITION_MS: 100,
FONT_STACK: "-apple-system, BlinkMacSystemFont, system-ui, sans-serif",
FONT_MONO: "ui-monospace, SFMono-Regular, Menlo, monospace",
},
IDS: {
TOOLTIP: "TimeConverterTooltipContainer",
},
CLASSES: {
PROCESSED: "time-converter-processed",
VISIBLE: "time-converter-visible",
},
SELECTORS: {
RELATIVE_TIME: "relative-time:not(.time-converter-processed)",
PROCESSED_SPAN: "span.time-converter-processed[data-tooltip-time]",
},
I18N: {
"zh-CN": { INVALID: "无效日期" },
"zh-TW": { INVALID: "無效日期" },
"en-US": { INVALID: "Invalid Date" },
},
};
const state = {
locale: "en-US",
formatters: { date: null, time: null },
tooltip: null,
init() {
this.locale = this.detectLocale();
this.createFormatters();
},
detectLocale() {
const langs = navigator.languages || [navigator.language];
for (const lang of langs) {
const lower = lang.toLowerCase();
if (lower === "zh-cn" || lower.startsWith("zh-hans")) return "zh-CN";
if (lower.match(/^zh-(tw|hk|mo|hant)/)) return "zh-TW";
if (lower.startsWith("zh")) return "zh-CN";
if (lower.startsWith("en")) return "en-US";
}
return "en-US";
},
createFormatters() {
try {
this.formatters.date = new Intl.DateTimeFormat(this.locale, {
year: "2-digit",
month: "2-digit",
day: "2-digit",
});
this.formatters.time = new Intl.DateTimeFormat(this.locale, {
hour: "2-digit",
minute: "2-digit",
second: "2-digit",
hour12: false,
});
} catch {
this.formatters = { date: null, time: null };
}
},
getText(key) {
return (
CONFIG.I18N[this.locale]?.[key] ?? CONFIG.I18N["en-US"][key] ?? key
);
},
};
const ui = {
injectStyles() {
const { TRANSITION_MS, FONT_MONO } = CONFIG.SETTINGS;
const { TOOLTIP } = CONFIG.IDS;
const { PROCESSED, VISIBLE } = CONFIG.CLASSES;
GM_addStyle(`
:root {
--tooltip-bg-dark: rgba(41, 44, 60, 0.92);
--tooltip-text-dark: rgb(198, 208, 245);
--tooltip-border-dark: rgba(98, 104, 128, 0.25);
--tooltip-shadow-dark: 0 1px 3px rgba(0,0,0,0.15), 0 5px 10px rgba(0,0,0,0.2);
--tooltip-bg-light: rgba(230, 233, 239, 0.92);
--tooltip-text-light: rgb(76, 79, 105);
--tooltip-border-light: rgba(172, 176, 190, 0.3);
--tooltip-shadow-light: 0 1px 3px rgba(90,90,90,0.08), 0 5px 10px rgba(90,90,90,0.12);
}
#${TOOLTIP} {
position: fixed;
padding: 6px 10px;
border-radius: 8px;
font: 12px/1.4 ${FONT_MONO};
z-index: 2147483647;
pointer-events: none;
white-space: pre;
max-width: 350px;
opacity: 0;
visibility: hidden;
backdrop-filter: blur(10px) saturate(180%);
transition: opacity ${TRANSITION_MS}ms cubic-bezier(0,0,0.58,1),
visibility ${TRANSITION_MS}ms cubic-bezier(0,0,0.58,1);
background: var(--tooltip-bg-dark);
color: var(--tooltip-text-dark);
border: 1px solid var(--tooltip-border-dark);
box-shadow: var(--tooltip-shadow-dark);
}
#${TOOLTIP}.${VISIBLE} {
opacity: 1;
visibility: visible;
}
.${PROCESSED}[data-tooltip-time] {
display: inline-block;
font-family: ${FONT_MONO};
cursor: help;
}
@media (prefers-color-scheme: light) {
#${TOOLTIP} {
background: var(--tooltip-bg-light);
color: var(--tooltip-text-light);
border-color: var(--tooltip-border-light);
box-shadow: var(--tooltip-shadow-light);
}
}
`);
},
createTooltip() {
if (state.tooltip) return state.tooltip;
const tooltip = document.createElement("div");
tooltip.id = CONFIG.IDS.TOOLTIP;
tooltip.setAttribute("role", "tooltip");
tooltip.setAttribute("aria-hidden", "true");
document.body?.appendChild(tooltip);
state.tooltip = tooltip;
return tooltip;
},
showTooltip(target) {
const time = target.dataset.tooltipTime;
if (!time) return;
const tooltip = this.createTooltip();
tooltip.textContent = time;
tooltip.setAttribute("aria-hidden", "false");
tooltip.classList.add(CONFIG.CLASSES.VISIBLE);
requestAnimationFrame(() => this.positionTooltip(target, tooltip));
},
positionTooltip(target, tooltip) {
if (!target.isConnected) {
this.hideTooltip();
return;
}
const rect = target.getBoundingClientRect();
const { TOOLTIP_OFFSET: offset, EDGE_MARGIN: margin } = CONFIG.SETTINGS;
const { offsetWidth: w, offsetHeight: h } = tooltip;
const vw = window.innerWidth;
const vh = window.innerHeight;
let left = rect.left + rect.width / 2 - w / 2;
left = Math.max(margin, Math.min(vw - w - margin, left));
const spaceAbove = rect.top - offset;
const spaceBelow = vh - rect.bottom - offset;
let top;
if (spaceAbove >= h + margin) {
top = rect.top - h - offset;
} else if (spaceBelow >= h + margin) {
top = rect.bottom + offset;
} else {
top =
spaceAbove > spaceBelow
? Math.max(margin, rect.top - h - offset)
: Math.min(vh - h - margin, rect.bottom + offset);
}
Object.assign(tooltip.style, {
left: `${left}px`,
top: `${top}px`,
visibility: "visible",
});
},
hideTooltip() {
state.tooltip?.classList.remove(CONFIG.CLASSES.VISIBLE);
state.tooltip?.setAttribute("aria-hidden", "true");
},
};
const converter = {
format(dateStr, type) {
const date = new Date(dateStr);
if (isNaN(date.getTime())) return state.getText("INVALID");
const formatter = state.formatters[type];
if (formatter) {
return formatter.format(date).replace(/\//g, "-");
}
const pad = (n) => String(n).padStart(2, "0");
if (type === "date") {
const y = String(date.getFullYear()).slice(-2);
const m = pad(date.getMonth() + 1);
const d = pad(date.getDate());
return `${y}-${m}-${d}`;
}
return `${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(
date.getSeconds()
)}`;
},
convertElement(el) {
if (
!(el instanceof Element) ||
el.classList.contains(CONFIG.CLASSES.PROCESSED)
) {
return;
}
const datetime = el.getAttribute("datetime");
if (!datetime) {
el.classList.add(CONFIG.CLASSES.PROCESSED);
return;
}
const dateText = this.format(datetime, "date");
const timeText = this.format(datetime, "time");
const invalid = state.getText("INVALID");
if (dateText === invalid || timeText === invalid) {
el.classList.add(CONFIG.CLASSES.PROCESSED);
return;
}
const span = document.createElement("span");
span.textContent = dateText;
span.dataset.tooltipTime = timeText;
span.classList.add(CONFIG.CLASSES.PROCESSED);
el.parentNode?.replaceChild(span, el);
},
processAll(root = document.body) {
root
?.querySelectorAll(CONFIG.SELECTORS.RELATIVE_TIME)
.forEach((el) => this.convertElement(el));
},
};
const events = {
init() {
this.setupTooltipEvents();
this.setupObserver();
},
setupTooltipEvents() {
const selector = CONFIG.SELECTORS.PROCESSED_SPAN;
document.body.addEventListener("mouseover", (e) => {
const target = e.target.closest(selector);
if (target) ui.showTooltip(target);
});
document.body.addEventListener("mouseout", (e) => {
const target = e.target.closest(selector);
if (target && !e.relatedTarget?.closest?.(`#${CONFIG.IDS.TOOLTIP}`)) {
ui.hideTooltip();
}
});
document.body.addEventListener(
"focusin",
(e) => {
const target = e.target.closest(selector);
if (target) ui.showTooltip(target);
},
true
);
document.body.addEventListener(
"focusout",
(e) => {
const target = e.target.closest(selector);
if (target) ui.hideTooltip();
},
true
);
},
setupObserver() {
const selector = CONFIG.SELECTORS.RELATIVE_TIME;
const observer = new MutationObserver((mutations) => {
const elements = new Set();
for (const { addedNodes } of mutations) {
for (const node of addedNodes) {
if (node.nodeType !== Node.ELEMENT_NODE) continue;
if (node.matches?.(selector)) {
elements.add(node);
} else {
node
.querySelectorAll?.(selector)
.forEach((el) => elements.add(el));
}
}
}
elements.forEach((el) => converter.convertElement(el));
});
observer.observe(document.body, { childList: true, subtree: true });
},
};
function init() {
state.init();
ui.injectStyles();
converter.processAll();
events.init();
}
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", init, { once: true });
} else {
init();
}
})();