67 lines
2.3 KiB
JavaScript
67 lines
2.3 KiB
JavaScript
import homepages from 'homepages';
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import SUPPORTED_BROWSER_LANGUAGES from 'constants/supported_browser_languages';
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const DEFAULT_LANG = 'en';
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export const getDefaultLanguage = () => {
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const browserLanguage = window.navigator.language;
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if (SUPPORTED_BROWSER_LANGUAGES[browserLanguage]) {
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return SUPPORTED_BROWSER_LANGUAGES[browserLanguage];
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}
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if (browserLanguage.includes('-')) {
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// Perhaps it is a sub-lang that we are currently not supporting.
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// See if we support the main one.
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const mainLang = browserLanguage.substring(0, browserLanguage.indexOf('-'));
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if (SUPPORTED_BROWSER_LANGUAGES[mainLang]) {
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return SUPPORTED_BROWSER_LANGUAGES[mainLang];
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}
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}
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return DEFAULT_LANG;
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};
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// If homepages has a key "zh-Hant" return that, otherwise return "zh", otherwise "en"
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export const getDefaultHomepageKey = () => {
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const language = getDefaultLanguage();
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return (homepages[language] && language) || (homepages[language.slice(0, 2)] && language.slice(0, 2)) || DEFAULT_LANG;
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};
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/**
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* Sorts the language map by their native representation (not by language code).
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*
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* @param languages The language map to sort, e.g. "{ 'ja': '日本語', ... }"
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* @returns {[string, string][]}
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*/
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export function sortLanguageMap(languages) {
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return Object.entries(languages).sort((a, b) => {
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const lhs = String(a[1]);
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const rhs = String(b[1]);
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if (lhs < rhs) return -1;
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if (lhs > rhs) return 1;
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return 0;
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});
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}
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/**
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* Resolves the language parameter for a claim_search based on various settings.
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*
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* @param langSetting The user's language setting.
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* @param searchInSelectedLangOnly Return results in the given language only.
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* @param langParam Language override for specific use-cases, typically from urlParam.
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* @returns {string|null} Comma-separated string of language codes, or null.
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*/
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export function resolveLangForClaimSearch(langSetting, searchInSelectedLangOnly, langParam = null) {
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// TODO: expand ternary for easier maintenance.
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return searchInSelectedLangOnly
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? langParam === null
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? langSetting.concat(langSetting === 'en' ? ',none' : '')
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: langParam === 'any'
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? null
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: langParam.concat(langParam === 'en' ? ',none' : '')
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: langParam === null
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? null
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: langParam === 'any'
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? null
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: langParam.concat(langParam === 'en' ? ',none' : '');
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}
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