115 lines
3.7 KiB
TypeScript
115 lines
3.7 KiB
TypeScript
import { getRequestConfig } from 'next-intl/server';
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import { headers } from 'next/headers';
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import { mergeMessages } from './merge-messages';
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import { routing, type Locale } from './routing';
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// Default a first-time visitor (no explicit stored choice) to the best supported
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// language from their browser's Accept-Language header, so "Auto" is the real
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// default and the first server render already matches the browser language.
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function localeFromAcceptLanguage(header: string | null): string | null {
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if (!header) return null;
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const supported = new Set<string>(routing.locales as readonly string[]);
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const ranked = header
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.split(',')
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.map((part) => {
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const [tag, q] = part.trim().split(';q=');
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return { base: tag.toLowerCase().split('-')[0], q: q ? parseFloat(q) : 1 };
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})
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.sort((a, b) => b.q - a.q);
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for (const { base } of ranked) {
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if (supported.has(base)) return base;
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}
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return null;
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}
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export default getRequestConfig(async ({ requestLocale }) => {
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let locale = await requestLocale;
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if (!locale || !routing.locales.includes(locale as Locale)) {
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const accept = (await headers()).get('accept-language');
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locale = localeFromAcceptLanguage(accept) ?? routing.defaultLocale;
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}
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// Use static imports for better compatibility
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let messages;
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switch (locale) {
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case 'cs':
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messages = (await import('../locales/cs/common.json')).default;
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break;
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case 'da':
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messages = (await import('../locales/da/common.json')).default;
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break;
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case 'de':
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messages = (await import('../locales/de/common.json')).default;
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break;
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case 'es':
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messages = (await import('../locales/es/common.json')).default;
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break;
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case 'he':
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messages = (await import('../locales/he/common.json')).default;
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break;
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case 'fa':
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messages = (await import('../locales/fa/common.json')).default;
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break;
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case 'fr':
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messages = (await import('../locales/fr/common.json')).default;
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break;
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case 'hu':
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messages = (await import('../locales/hu/common.json')).default;
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break;
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case 'it':
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messages = (await import('../locales/it/common.json')).default;
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break;
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case 'ja':
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messages = (await import('../locales/ja/common.json')).default;
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break;
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case 'ko':
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messages = (await import('../locales/ko/common.json')).default;
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break;
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case 'lv':
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messages = (await import('../locales/lv/common.json')).default;
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break;
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case 'nl':
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messages = (await import('../locales/nl/common.json')).default;
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break;
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case 'pl':
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messages = (await import('../locales/pl/common.json')).default;
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break;
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case 'pt':
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messages = (await import('../locales/pt/common.json')).default;
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break;
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case 'ro':
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messages = (await import('../locales/ro/common.json')).default;
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break;
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case 'ru':
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messages = (await import('../locales/ru/common.json')).default;
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break;
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case 'sk':
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messages = (await import('../locales/sk/common.json')).default;
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break;
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case 'tr':
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messages = (await import('../locales/tr/common.json')).default;
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break;
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case 'uk':
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messages = (await import('../locales/uk/common.json')).default;
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break;
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case 'zh':
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messages = (await import('../locales/zh/common.json')).default;
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break;
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default:
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messages = (await import('../locales/en/common.json')).default;
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}
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if (locale !== 'en') {
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const enBase = (await import('../locales/en/common.json')).default as Record<string, unknown>;
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messages = mergeMessages(enBase, messages as Record<string, unknown>);
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}
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return {
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locale,
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messages,
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timeZone: 'Europe/Paris',
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now: new Date()
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};
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});
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