87 lines
2.7 KiB
TypeScript
87 lines
2.7 KiB
TypeScript
export type LocaleRewriteMap = Record<string, Record<string, string>>;
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export const defaultLocaleRewrites: LocaleRewriteMap = {
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'/': {},
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'/kontakt': { en: '/contact' },
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'/contact': { de: '/kontakt' },
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'/so-funktionierts': { en: '/how-it-works' },
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'/how-it-works': { de: '/so-funktionierts' },
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'/bestellen': { en: '/checkout' },
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'/checkout': { de: '/bestellen' },
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'/anlaesse': { en: '/occasions' },
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'/anlaesse/hochzeit': { en: '/occasions/wedding' },
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'/anlaesse/geburtstag': { en: '/occasions/birthday' },
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'/anlaesse/firmenevent': { en: '/occasions/corporate-event' },
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'/anlaesse/konfirmation': { en: '/occasions/confirmation' },
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'/occasions/wedding': { de: '/anlaesse/hochzeit' },
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'/occasions/birthday': { de: '/anlaesse/geburtstag' },
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'/occasions/corporate-event': { de: '/anlaesse/firmenevent' },
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'/occasions/confirmation': { de: '/anlaesse/konfirmation' },
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};
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const sanitizePath = (input: string): string => {
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if (!input || input.trim().length === 0) {
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return '/';
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}
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const withLeading = input.startsWith('/') ? input : `/${input}`;
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const withoutTrailing = withLeading.replace(/\/{2,}/g, '/');
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return withoutTrailing;
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};
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const resolveRewrite = (
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path: string,
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targetLocale: string,
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rewrites: LocaleRewriteMap,
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): string => {
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const exact = rewrites[path];
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if (exact) {
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return exact[targetLocale] ?? path;
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}
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const prefixKey = Object.keys(rewrites)
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.filter((key) => key !== '/' && path.startsWith(`${key}/`))
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.sort((a, b) => b.length - a.length)[0];
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if (!prefixKey) {
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return path;
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}
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const replacement = rewrites[prefixKey]?.[targetLocale];
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if (!replacement) {
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return path;
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}
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const suffix = path.slice(prefixKey.length);
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return `${replacement}${suffix}`;
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};
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export const buildLocalizedPath = (
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path: string | null | undefined,
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targetLocale: string | undefined,
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supportedLocales: string[],
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defaultLocale = 'de',
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rewrites: LocaleRewriteMap = defaultLocaleRewrites,
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): string => {
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const fallbackLocale = supportedLocales.length > 0 ? supportedLocales[0] : defaultLocale;
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const nextLocale = targetLocale && supportedLocales.includes(targetLocale)
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? targetLocale
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: fallbackLocale;
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if (typeof path !== 'string' || path.trim().length === 0) {
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return `/${fallbackLocale}`;
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}
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const trimmed = path.trim();
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const [rawPath, rawQuery] = trimmed.split('?');
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const normalizedPath = sanitizePath(rawPath);
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const rewrittenPath = resolveRewrite(normalizedPath, nextLocale, rewrites);
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const base = rewrittenPath === '/' ? `/${nextLocale}` : `/${nextLocale}${rewrittenPath}`;
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const sanitisedBase = base.replace(/\/{2,}/g, '/');
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const query = rawQuery ? `?${rawQuery}` : '';
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return `${sanitisedBase}${query}`;
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};
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