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/**
* BOOT LOADER
* サーバーからレスポンスされるHTMLに埋め込まれるスクリプトで、以下の役割を持ちます。
* - 翻訳ファイルをフェッチする。
* - バージョンに基づいて適切なメインスクリプトを読み込む。
* - キャッシュされたコンパイル済みテーマを適用する。
* - クライアントの設定値に基づいて対応するHTMLクラス等を設定する。
* テーマをこの段階で設定するのは、メインスクリプトが読み込まれる間もテーマを適用したいためです。
* 注: webpackは介さないため、このファイルではrequireやimportは使えません。
*/
'use strict';
// ブロックの中に入れないと、定義した変数がブラウザのグローバルスコープに登録されてしまい邪魔なので
(async () => {
window.onerror = (e) => {
renderError('SOMETHING_HAPPENED', e);
};
window.onunhandledrejection = (e) => {
renderError('SOMETHING_HAPPENED_IN_PROMISE', e);
};
const v = localStorage.getItem('v') || VERSION;
//#region Detect language & fetch translations
const localeVersion = localStorage.getItem('localeVersion');
const localeOutdated = (localeVersion == null || localeVersion !== v);
if (!localStorage.hasOwnProperty('locale') || localeOutdated) {
const supportedLangs = LANGS;
let lang = localStorage.getItem('lang');
if (lang == null || !supportedLangs.includes(lang)) {
if (supportedLangs.includes(navigator.language)) {
lang = navigator.language;
} else {
lang = supportedLangs.find(x => x.split('-')[0] === navigator.language);
// Fallback
if (lang == null) lang = 'en-US';
}
}
const res = await fetch(`/assets/locales/${lang}.${v}.json`);
if (res.status === 200) {
localStorage.setItem('lang', lang);
localStorage.setItem('locale', await res.text());
localStorage.setItem('localeVersion', v);
} else {
await checkUpdate();
renderError('LOCALE_FETCH_FAILED');
return;
}
}
//#endregion
//#region Script
import(`/assets/${CLIENT_ENTRY}`)
.catch(async e => {
await checkUpdate();
renderError('APP_FETCH_FAILED', e);
})
//#endregion
//#region Theme
const theme = localStorage.getItem('theme');
if (theme) {
for (const [k, v] of Object.entries(JSON.parse(theme))) {
document.documentElement.style.setProperty(`--${k}`, v.toString());
// HTMLの theme-color 適用
if (k === 'htmlThemeColor') {
for (const tag of document.head.children) {
if (tag.tagName === 'META' && tag.getAttribute('name') === 'theme-color') {
tag.setAttribute('content', v);
break;
}
}
}
}
}
//#endregion
const fontSize = localStorage.getItem('fontSize');
if (fontSize) {
document.documentElement.classList.add('f-' + fontSize);
}
const useSystemFont = localStorage.getItem('useSystemFont');
if (useSystemFont) {
document.documentElement.classList.add('useSystemFont');
}
const wallpaper = localStorage.getItem('wallpaper');
if (wallpaper) {
document.documentElement.style.backgroundImage = `url(${wallpaper})`;
}
const customCss = localStorage.getItem('customCss');
if (customCss && customCss.length > 0) {
const style = document.createElement('style');
style.innerHTML = customCss;
document.head.appendChild(style);
}
// eslint-disable-next-line no-inner-declarations
function renderError(code, details) {
let errorsElement = document.getElementById('errors');
if (!errorsElement) {
document.getElementsByTagName("head")[0].insertAdjacentHTML(
"beforeend",
`<link rel="stylesheet" href="../error.css" />`);
document.documentElement.innerHTML = `
<svg class="icon-warning" xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-alert-triangle" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
<path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
<path d="M12 9v2m0 4v.01"></path>
<path d="M5 19h14a2 2 0 0 0 1.84 -2.75l-7.1 -12.25a2 2 0 0 0 -3.5 0l-7.1 12.25a2 2 0 0 0 1.75 2.75"></path>
</svg>
<h1>An error has occurred!</h1>
<button class="button-big" onclick="location.reload(true);">
<span class="button-label-big">Refresh</span>
</button>
<p class="dont-worry">Don't worry, it's (probably) not your fault.</p>
<p>If the problem persists after refreshing, please contact your instance's administrator.<br>You may also try the following options:</p>
<a href="/flush">
<button class="button-small">
<span class="button-label-small">Flush preferences and cache</span>
</button>
</a>
<br>
<a href="/cli">
<button class="button-small">
<span class="button-label-small">Start the simple client</span>
</button>
</a>
<br>
<a href="/bios">
<button class="button-small">
<span class="button-label-small">Attempt to repair in Repair Tool</span>
</button>
</a>
<br>
<div id="errors"></div>
`;
errorsElement = document.getElementById('errors');
}
const detailsElement = document.createElement('details');
detailsElement.innerHTML = `<br><summary><code>ERROR CODE: ${code}</code></summary>${JSON.stringify(details)}`;
errorsElement.appendChild(detailsElement);
}
// eslint-disable-next-line no-inner-declarations
async function checkUpdate() {
// TODO: サーバーが落ちている場合などのエラーハンドリング
const res = await fetch('/api/meta', {
method: 'POST',
cache: 'no-cache'
});
const meta = await res.json();
if (meta.version != v) {
localStorage.setItem('v', meta.version);
refresh();
}
}
// eslint-disable-next-line no-inner-declarations
function refresh() {
// Clear cache (service worker)
try {
navigator.serviceWorker.controller.postMessage('clear');
navigator.serviceWorker.getRegistrations().then(registrations => {
registrations.forEach(registration => registration.unregister());
});
} catch (e) {
console.error(e);
}
location.reload();
}
})();
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