73 lines
1.8 KiB
JavaScript
73 lines
1.8 KiB
JavaScript
// @if TARGET='app'
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let fs = require('fs');
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// @endif
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const isProduction = process.env.NODE_ENV === 'production';
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let knownMessages = null;
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let localStorageAvailable;
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try {
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localStorageAvailable = Boolean(window.localStorage);
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} catch (e) {
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localStorageAvailable = false;
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}
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window.i18n_messages = window.i18n_messages || {};
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// @if TARGET='app'
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function saveMessage(message) {
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const messagesFilePath = __static + '/app-strings.json';
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if (knownMessages === null) {
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try {
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knownMessages = JSON.parse(fs.readFileSync(messagesFilePath, 'utf-8'));
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} catch (err) {
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throw 'Error parsing i18n messages file: ' + messagesFilePath + ' err: ' + err;
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}
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}
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if (!knownMessages[message]) {
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knownMessages[message] = message;
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fs.writeFile(messagesFilePath, JSON.stringify(knownMessages, null, 2), 'utf-8', err => {
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if (err) {
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throw err;
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}
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});
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}
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}
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// @endif
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/*
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I dislike the below code (and note that it ships all the way to the distributed app),
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but this seems better than silently having this limitation and future devs not knowing.
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*/
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// @if TARGET='web'
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function saveMessage(message) {
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if (!isProduction && knownMessages === null) {
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console.log('Note that i18n messages are not saved in web dev mode.');
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knownMessages = {};
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}
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}
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// @endif
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export function __(message, tokens) {
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const language = localStorageAvailable
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? window.localStorage.getItem('language') || 'en'
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: window.navigator.language.slice(0, 2) || 'en';
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if (!isProduction) {
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saveMessage(message);
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}
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const translatedMessage = window.i18n_messages[language]
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? window.i18n_messages[language][message] || message
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: message;
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if (!tokens) {
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return translatedMessage;
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}
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return translatedMessage.replace(/%([^%]+)%/g, function($1, $2) {
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return tokens.hasOwnProperty($2) ? tokens[$2] : $2;
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});
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}
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