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43 lines
1.3 KiB
JavaScript
43 lines
1.3 KiB
JavaScript
/* eslint-env browser, jquery */
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/* global Cookies */
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const supportedLanguages = require('../../locales/_supported.json')
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function detectLang () {
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if (Cookies.get('locale')) {
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let lang = Cookies.get('locale')
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if (lang === 'zh') {
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lang = 'zh-TW'
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}
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return lang
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}
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const userLang = navigator.language || navigator.userLanguage
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const userLangCode = userLang.split('-')[0]
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const supportedLanguagesList = Object.keys(supportedLanguages)
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if (supportedLanguagesList.includes(userLangCode)) {
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return userLangCode
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} else if (supportedLanguagesList.includes(userLang)) {
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return userLang
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}
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return 'en'
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}
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const lang = detectLang()
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const localeSelector = $('.ui-locale')
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Object.entries(supportedLanguages).forEach(function ([isoCode, nativeName]) {
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localeSelector.append(`<option value="${isoCode}">${nativeName}</option>`)
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})
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// the following condition is needed as the selector is only available in the intro/history page
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if (localeSelector.length > 0) {
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localeSelector.val(lang)
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$('select.ui-locale option[value="' + lang + '"]').attr('selected', 'selected')
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localeSelector.change(function () {
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Cookies.set('locale', $(this).val(), {
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expires: 365,
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sameSite: window.cookiePolicy
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})
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window.location.reload()
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})
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}
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window.moment.locale(lang)
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