website-gemompel/app/loc.js

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/**
* the default language to use
*
* @var {string}
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* @author svartoyg
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*/
var _languageDefault = null;
/**
* the fallback language to use
*
* @var {string}
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* @author svartoyg
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*/
var _languageFallback = null;
/**
* two level map with ISO-639-1 code as first key and translation id as second key
*
* @var {Map<string,Map<string,string>>}
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* @author svartoyg
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*/
var _data = {};
/**
* @param {string} language
* @return Promise<Map<string,string>>
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* @author svartoyg
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*/
async function retrieveData (language) {
try {
return (await import(`../loc/${language}.json`)).default
} catch (exception) {
return (await import(`../loc/${language.substr(0, language.indexOf('-'))}.json`)).default
}
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}
/**
* @param {string} languageDefault
* @param {string} [languageFallback]
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* @author svartoyg
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*/
export async function initialize (languageDefault, languageFallback = 'en') {
_languageFallback = languageFallback;
_languageDefault = languageDefault;
for (const language of [_languageFallback, _languageDefault]) {
if (_data.hasOwnProperty(language)) continue;
console.log('--', 'loading localization data for language "' + language + '" ...');
let data;
try {
data = await retrieveData(language);
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} catch (exception) {
console.warn(exception.toString());
}
_data[language] = data;
}
}
/**
* gets a translation by its key for a specific language
*
* @param {string} key
* @param {string} [languageChosen]
* @return {string}
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* @author svartoyg
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*/
export function translate (key, languageChosen = _languageDefault) {
let result = undefined;
for (const language of [languageChosen, _languageFallback]) {
if (_data.hasOwnProperty(language) && (_data[language] !== undefined) && _data[language].hasOwnProperty(key)) {
result = _data[language][key];
break;
}
}
if (result === undefined) {
result = ('{{' + key + '}}');
}
return result;
}