// Copyright 2017-2022 Signal Messenger, LLC // SPDX-License-Identifier: AGPL-3.0-only import { join } from 'path'; import { readFileSync } from 'fs'; import { merge } from 'lodash'; import { setupI18n } from '../ts/util/setupI18n'; import type { LoggerType } from '../ts/types/Logging'; import type { LocaleMessagesType } from '../ts/types/I18N'; import type { LocalizerType } from '../ts/types/Util'; function normalizeLocaleName(locale: string): string { if (/^en-/.test(locale)) { return 'en'; } return locale; } function getLocaleMessages(locale: string): LocaleMessagesType { const onDiskLocale = locale.replace('-', '_'); const targetFile = join( __dirname, '..', '_locales', onDiskLocale, 'messages.json' ); return JSON.parse(readFileSync(targetFile, 'utf-8')); } export type LocaleType = { i18n: LocalizerType; name: string; messages: LocaleMessagesType; }; export function load({ appLocale, logger, }: { appLocale: string; logger: Pick; }): LocaleType { if (!appLocale) { throw new TypeError('`appLocale` is required'); } if (!logger || !logger.error) { throw new TypeError('`logger.error` is required'); } const english = getLocaleMessages('en'); // Load locale - if we can't load messages for the current locale, we // default to 'en' // // possible locales: // https://github.com/electron/electron/blob/master/docs/api/locales.md let localeName = normalizeLocaleName(appLocale); let messages; try { messages = getLocaleMessages(localeName); // We start with english, then overwrite that with anything present in locale messages = merge(english, messages); } catch (e) { logger.error( `Problem loading messages for locale ${localeName} ${e.stack}` ); logger.error('Falling back to en locale'); localeName = 'en'; messages = english; } const i18n = setupI18n(appLocale, messages); return { i18n, name: localeName, messages, }; }