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// ==UserScript==
// @name Niconico Live Auto Enter
// @description 開場したら自動で入場します
// @version 0.2.4
// @include https://live.nicovideo.jp/watch/*
// @grant GM_xmlhttpRequest
// @author xulapp
// @namespace https://twitter.com/xulapp
// @license MIT
// @downloadURL https://update.greasyfork.icu/scripts/16324/Niconico%20Live%20Auto%20Enter.user.js
// @updateURL https://update.greasyfork.icu/scripts/16324/Niconico%20Live%20Auto%20Enter.meta.js
// ==/UserScript==
/* eslint-env browser, greasemonkey */
'use strict';
function atLeast(promises, num) {
return new Promise((resolve, reject) => {
const resolved = [];
const rejected = [];
function ok(arg) {
resolved.push(arg);
added();
}
function ng(err) {
rejected.push(err);
added();
}
function added() {
if (resolved.length + rejected.length < promises.length)
return;
if (resolved.length < num)
reject(rejected);
else
resolve(resolved);
}
for (let p of promises)
Promise.resolve(p).then(ok, ng);
});
}
const getJST = (() => {
const servers = [
'//ntp-a1.nict.go.jp/cgi-bin/json',
'//ntp-b1.nict.go.jp/cgi-bin/json',
];
let diff = 0;
function getJST() {
return Date.now() + diff;
}
function get(options) {
if (typeof options === 'string')
options = {url: options};
return new Promise((onload, onerror) => {
GM_xmlhttpRequest(Object.assign({}, options, {onload, onerror}));
});
}
function getJSON(...args) {
return get(...args).then(res => JSON.parse(res.responseText));
}
function fetchDiff(server) {
return getJSON(`${server}?${Date.now() / 1000}`).then(res => {
const rt = Date.now() / 1000;
const {it, st} = res;
return (st - (it + rt) / 2) * 1000;
});
}
function onload(arr) {
if (arr.length)
diff = arr.reduce((a, b) => a + b) / arr.length | 0;
console.log(`時差を取得しました [${diff < 0 ? '' : '+'}${diff}ms]`);
return diff;
}
function onerror(err) {
console.log('時差の取得に失敗しました');
for (let res of err)
if (res instanceof Error)
console.log(res.message);
else
console.log(` ${res.status} ${res.statusText} ${res.finalUrl}`);
return null;
}
getJST.ready = atLeast(servers.map(fetchDiff), 1).then(onload, onerror);
return getJST;
})();
getJST.ready.then(() => {
const notificationTitle = 'Niconico Live Auto Enter';
const notificationDefaults = {
icon: (document.querySelector('meta[itemprop="thumbnail"]') || 0).content,
tag: 'niconico-live-auto-enter',
autoClose: 5000,
};
const programTitle = (document.querySelector('.program-title[itemprop="name"]') || 0).textContent;
const published = Date.parse((document.querySelector('.kaijo meta[itemprop="datePublished"]') || 0).content);
const notified = {};
if (!published || getRemaining() <= 0)
return;
const timer = () => {
const remaining = getRemaining();
if (remaining <= 0) {
notifyEnter();
enter();
return;
}
const sec = getRemainingSeconds();
const wait = sec < 1 ? 0 : sec < 10 ? 100 : sec < 3600 ? 1000 : 10000;
setTimeout(timer, wait);
const target = roundRemaining(remaining);
if (target in notified)
return;
notifyRemaining(remaining);
notified[target] = true;
};
timer();
function getRemainingSeconds() {
return (published - getJST()) / 1000;
}
function getRemaining() {
return Math.ceil(getRemainingSeconds() / 60);
}
function roundRemaining(remaining) {
for (let m of [0, 1, 3, 5, 10, 20, 30])
if (remaining <= m)
return m;
return Math.ceil(remaining / 60) * 60;
}
function notify(body, options) {
options = Object.assign({body}, notificationDefaults, options);
return new Promise((resolve, reject) => {
Notification.requestPermission(status => {
if (status !== 'granted') {
reject(status);
return;
}
const n = new Notification(notificationTitle, options);
if (options.autoClose)
setTimeout(() => n.close(), options.autoClose);
resolve(n);
});
});
}
function notifyRemaining(remaining) {
const minutes = remaining % 60;
const hours = remaining / 60 % 24 | 0;
const days = remaining / 60 / 24 | 0;
const timeStr = [];
if (days)
timeStr.push(`${days} 日`);
if (hours)
timeStr.push(`${hours} 時間`);
if (minutes || !timeStr.length)
timeStr.push(`${minutes} 分`);
notify(`${programTitle}\n\n開場まで、あと ${timeStr.join(' ')} です。`);
}
function notifyEnter() {
notify('入場します！');
}
function enter() {
location.reload(true);
}
});