lbry-desktop/ui/util/default-languages.js
infinite-persistence e4a88a5e9b SearchInLanguage: honor user's setting before category's setting.
## Ticket
Part of 1368 ("if user overrides the category homepage language with a different language setting + use 'search this language' option, use that instead. It's not typical this will happen, but probably expected.")

## Change
- Refactored to move more logic into `resolveLangForClaimSearch`
- Replaced the ternary version to make it more readable (hopefully).
- Inverted the language filter precedence by honoring the user's setting first.
  - Note: for both User and Category, URLSearchParams will always take precedence.
2022-04-22 09:39:23 -04:00

85 lines
2.8 KiB
JavaScript

import SUPPORTED_BROWSER_LANGUAGES from 'constants/supported_browser_languages';
const DEFAULT_LANG = 'en';
export const getDefaultLanguage = () => {
const browserLanguage = window.navigator.language;
if (SUPPORTED_BROWSER_LANGUAGES[browserLanguage]) {
return SUPPORTED_BROWSER_LANGUAGES[browserLanguage];
}
if (browserLanguage.includes('-')) {
// Perhaps it is a sub-lang that we are currently not supporting.
// See if we support the main one.
const mainLang = browserLanguage.substring(0, browserLanguage.indexOf('-'));
if (SUPPORTED_BROWSER_LANGUAGES[mainLang]) {
return SUPPORTED_BROWSER_LANGUAGES[mainLang];
}
}
return DEFAULT_LANG;
};
// If homepages has a key "zh-Hant" return that, otherwise return "zh", otherwise "en"
export const getDefaultHomepageKey = () => {
const language = getDefaultLanguage();
const homepages = window.homepages || {};
return (homepages[language] && language) || (homepages[language.slice(0, 2)] && language.slice(0, 2)) || DEFAULT_LANG;
};
/**
* Sorts the language map by their native representation (not by language code).
*
* @param languages The language map to sort, e.g. "{ 'ja': '日本語', ... }"
* @returns {[string, string][]}
*/
export function sortLanguageMap(languages) {
return Object.entries(languages).sort((a, b) => {
const lhs = String(a[1]);
const rhs = String(b[1]);
if (lhs < rhs) return -1;
if (lhs > rhs) return 1;
return 0;
});
}
/**
* Resolves the claim_search 'any_language' parameter based on various language settings.
*
* @param languageSetting The user (redux) language setting.
* @param searchInLanguageSetting By default, the user (redux) setting, but some components may override to false (e.g. 'ignoreSearchInLanguage' prop).
* @param searchLanguages Per-instance default language list (e.g. different Categories having different filters).
* @param languageUrlParams Language override via URLSearchParams.
* @returns {string|null} Comma-separated string of language codes, or null.
*/
export function resolveLangForClaimSearch(
languageSetting, // : string,
searchInLanguageSetting, // : boolean,
searchLanguages, // : ?Array<string>,
languageUrlParams = null // : ?string
) {
const langParam = languageUrlParams;
let lang;
if (searchInLanguageSetting) {
lang = languageSetting;
} else if (searchLanguages) {
lang = searchLanguages.join(',');
}
if (lang) {
if (langParam === null) {
return lang === 'en' ? 'en,none' : lang;
} else if (langParam === 'any') {
return null;
} else {
return langParam === 'en' ? 'en,none' : langParam;
}
} else if (langParam === null) {
return null;
} else if (langParam === 'any') {
return null;
} else {
return langParam === 'en' ? 'en,none' : langParam;
}
}