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68 lines
2.8 KiB
TypeScript
68 lines
2.8 KiB
TypeScript
import { locales } from '@/i18n/routing';
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/**
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* Href helpers for a Lite bundle mounted at a prefix nobody knew at build time
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* (Stalwart `Application` with an admin-chosen `urlPrefix`).
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*
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* Next's router only knows the build-time `basePath`, and next-intl only adds
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* the locale, so `router.push('/settings')` would leave `/webmail` and land
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* on Stalwart's own routes. The Stalwart build routes every `@/i18n/navigation`
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* call through these helpers instead (i18n/mounted-navigation.tsx): hrefs gain
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* `<mount>/<locale>` on the way out, pathnames lose them on the way in, so the
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* components keep comparing against `/settings` exactly as before.
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*/
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export type MountedHref =
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| string
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| {
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pathname: string;
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query?: Record<string, string | number | boolean | readonly (string | number | boolean)[] | null | undefined>;
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hash?: string;
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};
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function isLocale(segment: string | undefined): boolean {
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return !!segment && (locales as readonly string[]).includes(segment);
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}
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/** `{ pathname, query, hash }` (next-intl's object form) as a plain href string. */
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export function hrefToString(href: MountedHref): string {
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if (typeof href === 'string') return href;
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const params = new URLSearchParams();
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for (const [key, value] of Object.entries(href.query ?? {})) {
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if (value === undefined || value === null) continue;
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if (Array.isArray(value)) value.forEach((v) => params.append(key, String(v)));
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else params.append(key, String(value));
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}
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const search = params.toString();
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const hash = href.hash ? (href.hash.startsWith('#') ? href.hash : `#${href.hash}`) : '';
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return `${href.pathname}${search ? `?${search}` : ''}${hash}`;
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}
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/**
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* `/settings?tab=x` -> `<prefix>/<locale>/settings?tab=x`.
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*
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* External, protocol-relative and relative hrefs pass through, and so does a
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* path that already carries the prefix (or, at the site root, a locale), so
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* wrapping twice is harmless.
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*/
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export function mountedHref(href: MountedHref, locale: string, prefix: string): string {
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const raw = hrefToString(href);
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if (!raw.startsWith('/') || raw.startsWith('//')) return raw;
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if (prefix && (raw === prefix || raw.startsWith(`${prefix}/`))) return raw;
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if (!prefix && isLocale(raw.split(/[/?#]/)[1])) return raw;
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return `${prefix}/${locale}${raw}`;
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}
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/**
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* Browser pathname -> the locale-less path next-intl's `usePathname` returns:
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* `/webmail/en/settings/` -> `/settings`, `/webmail/en/` -> `/`.
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*/
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export function stripMountedPathname(pathname: string, prefix: string): string {
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let path = pathname || '/';
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if (prefix && (path === prefix || path.startsWith(`${prefix}/`))) path = path.slice(prefix.length) || '/';
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const parts = path.split('/');
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if (isLocale(parts[1])) path = `/${parts.slice(2).join('/')}`;
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if (path.length > 1) path = path.replace(/\/+$/, '');
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return path || '/';
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}
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