/** 后台单页应用可导航的路由标识。 */
export type AdminRouteId =
  | 'dashboard'
  | 'overview'
  | 'tables'
  | 'debug'
  | 'tracking'
  | 'error-reports'
  | 'gray-release'
  | 'redeem'
  | 'invite'
  | 'profile-wallet'
  | 'tasks'
  | 'recharge-products'
  | 'recharge-orders'
  | 'editor-generation-pricing'
  | 'editor-showcase'
  | 'editor-assets'
  | 'agc-models'
  | 'accounts';

export type AdminTabPermission = Exclude<
  AdminRouteId,
  'accounts' | 'agc-models'
>;

/** 后台导航项定义，hash 是浏览器地址栏和移动底栏共用入口。 */
export interface AdminRouteDefinition {
  id: AdminRouteId;
  label: string;
  hash: string;
  ownerOnly?: boolean;
}

export const adminRoutes: AdminRouteDefinition[] = [
  { id: 'dashboard', label: 'Dashboard', hash: '#dashboard' },
  { id: 'overview', label: '服务总览', hash: '#overview' },
  { id: 'tables', label: '表查询', hash: '#tables' },
  { id: 'debug', label: 'API 调试', hash: '#debug' },
  { id: 'tracking', label: '埋点数据', hash: '#tracking' },
  { id: 'error-reports', label: '错误报告', hash: '#error-reports' },
  { id: 'gray-release', label: '灰度发布', hash: '#gray-release' },
  { id: 'redeem', label: '兑换码', hash: '#redeem' },
  { id: 'invite', label: '邀请码', hash: '#invite' },
  { id: 'profile-wallet', label: '账号配置', hash: '#profile-wallet' },
  { id: 'tasks', label: '任务配置', hash: '#tasks' },
  { id: 'recharge-products', label: '充值商品', hash: '#recharge-products' },
  { id: 'recharge-orders', label: '充值管理', hash: '#recharge-orders' },
  {
    id: 'editor-generation-pricing',
    label: '模型定价',
    hash: '#editor-generation-pricing',
  },
  { id: 'agc-models', label: 'AGC 模型', hash: '#agc-models', ownerOnly: true },
  { id: 'editor-showcase', label: '精选审核', hash: '#editor-showcase' },
  { id: 'editor-assets', label: '素材查询', hash: '#editor-assets' },
  { id: 'accounts', label: '账号管理', hash: '#accounts', ownerOnly: true },
];

export interface AdminRouteAccess {
  accountRole: 'owner' | 'member';
  tabPermissions: string[];
}

export function getAccessibleAdminRoutes(
  admin: AdminRouteAccess,
): AdminRouteDefinition[] {
  if (admin.accountRole === 'owner') {
    return adminRoutes;
  }

  const permissions = new Set(admin.tabPermissions);
  return adminRoutes.filter(
    (route) => !route.ownerOnly && permissions.has(route.id),
  );
}

export function resolveAccessibleAdminRoute(
  hash: string,
  routes: AdminRouteDefinition[],
): AdminRouteId | null {
  const normalizedHash = hash.trim().toLowerCase().split('?')[0] ?? '';
  return (
    routes.find((route) => route.hash === normalizedHash)?.id ??
    routes[0]?.id ??
    null
  );
}

/** 根据地址栏 hash 解析后台路由，未知 hash 回落到 Dashboard。 */
export function resolveAdminRoute(hash: string): AdminRouteId {
  const normalizedHash = hash.trim().toLowerCase().split('?')[0] ?? '';
  return (
    adminRoutes.find((route) => route.hash === normalizedHash)?.id ??
    'dashboard'
  );
}

/** 根据后台路由标识反查 hash，供导航点击时同步地址栏。 */
export function routeHash(routeId: AdminRouteId) {
  return (
    adminRoutes.find((route) => route.id === routeId)?.hash ??
    adminRoutes[0]?.hash ??
    '#dashboard'
  );
}