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MisskeyIO/src/web/app/boot.js

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/**
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* MISSKEY BOOT LOADER
* (ENTRY POINT)
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*/
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/**
* ドメインに基づいて適切なスクリプトを読み込みます
* ユーザーの言語およびモバイル端末か否かも考慮します
*/
'use strict';
// Get the current url information
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const Url = new URL(location.href);
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// Extarct the (sub) domain part
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let app = Url.host.split('.')[0];
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// Detect user language
let lang = navigator.language.split('-')[0];
if (!/^(en|ja)$/.test(lang)) lang = 'en';
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// Detect user agent
const ua = navigator.userAgent.toLowerCase();
const isMobile = /mobile|iphone|ipad|android/.test(ua);
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// Get the <head> element
const [head] = document.getElementsByTagName('head');
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// If mobile, insert the viewport meta tag
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if (isMobile) {
const meta = document.createElement('meta');
meta.setAttribute('name', 'viewport');
meta.setAttribute('content', 'width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no');
head.appendChild(meta);
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}
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// Switch desktop or mobile version
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if (app == 'misskey') {
app = isMobile ? 'mobile' : 'desktop';
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}
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// Load app script
const script = document.createElement('script');
script.setAttribute('src', `/assets/${app}.${VERSION}.${lang}.js`);
script.setAttribute('async', 'true');
script.setAttribute('defer', 'true');
head.appendChild(script);