import { readJson, writeJson } from '../lib/storage';
import { loadAdminToken, persistAdminToken } from './adminAuth';
import type { SupportedLocale } from '../i18n';
// Admin dashboard is dark-mode only.
export type Theme = 'dark';
export type AdminUiPrefs = {
apiBaseUrl: string;
theme: Theme;
rememberAdminToken: boolean;
sidebarCollapsed: boolean;
locale: SupportedLocale;
};
const STORAGE_KEY_V1 = 'mcp-nexus.adminUiPrefs.v1';
const STORAGE_KEY_V2 = 'mcp-nexus.adminUiPrefs.v2';
export function loadPrefs(defaults: Partial<AdminUiPrefs> = {}): AdminUiPrefs {
const savedV2 = readJson<Partial<AdminUiPrefs>>(STORAGE_KEY_V2) ?? null;
const savedV1 = savedV2 ? null : (readJson<any>(STORAGE_KEY_V1) ?? null);
const apiBaseUrl =
typeof savedV2?.apiBaseUrl === 'string'
? savedV2.apiBaseUrl
: typeof savedV1?.apiBaseUrl === 'string'
? savedV1.apiBaseUrl
: typeof defaults.apiBaseUrl === 'string'
? defaults.apiBaseUrl
: '';
// Ignore stored theme preferences (including legacy `theme: "light"`).
const theme: Theme = 'dark';
const rememberAdminToken =
typeof savedV2?.rememberAdminToken === 'boolean'
? savedV2.rememberAdminToken
: typeof defaults.rememberAdminToken === 'boolean'
? defaults.rememberAdminToken
: false;
const sidebarCollapsed =
typeof savedV2?.sidebarCollapsed === 'boolean'
? savedV2.sidebarCollapsed
: typeof defaults.sidebarCollapsed === 'boolean'
? defaults.sidebarCollapsed
: false;
const locale: SupportedLocale =
savedV2?.locale === 'en' || savedV2?.locale === 'zh-CN'
? savedV2.locale
: defaults.locale === 'en' || defaults.locale === 'zh-CN'
? defaults.locale
: inferLocale();
const legacyAdminToken = typeof savedV1?.adminToken === 'string' ? savedV1.adminToken : '';
if (legacyAdminToken.trim() && !loadAdminToken().trim()) {
persistAdminToken(legacyAdminToken, true);
}
return { apiBaseUrl, theme, rememberAdminToken, sidebarCollapsed, locale };
}
export function savePrefs(next: AdminUiPrefs): void {
writeJson(STORAGE_KEY_V2, next);
}
function inferLocale(): SupportedLocale {
if (typeof window === 'undefined') return 'en';
const stored = localStorage.getItem('mcp-nexus.locale');
if (stored === 'zh-CN') return 'zh-CN';
if (stored === 'en') return 'en';
const browserLang = navigator.language || (navigator as any).userLanguage || '';
if (browserLang.startsWith('zh')) return 'zh-CN';
return 'en';
}
