import { lazy } from 'react';
import {
  Activity,
  Fuel,
  MapPinned,
  Route,
  Truck,
  Wallet,
  Zap,
} from 'lucide-react';
import type { ModuleConfig } from '../components/Shell';
import { canAccessEnergy, canAccessScheduling } from '../shared/auth/roles';
import type { PathSet } from './routing';

const AssetsModule = lazy(() => import('../modules/assets/AssetsModule'));
const MileageModule = lazy(() => import('../modules/mileage/MileageModule'));
const SchedulingModule = lazy(() => import('../modules/scheduling/SchedulingModule'));
const HydrogenModule = lazy(() => import('../modules/energy/HydrogenModule'));
const ElectricModule = lazy(() => import('../modules/energy/ElectricModule'));
const EtcModule = lazy(() => import('../modules/energy/EtcModule'));
const VehicleHeatmapModule = lazy(() => import('../modules/vehicle-heatmap/VehicleHeatmapModule'));
const HydrogenHeatmapModule = lazy(() => import('../modules/hydrogen-heatmap/HydrogenHeatmapModule'));

const ASSET_MODULES: ModuleConfig[] = [
  { id: 'assets', label: '资产管理', icon: Truck, component: AssetsModule },
  { id: 'mileage', label: '里程管理', icon: Route, component: MileageModule },
];

const VEHICLE_HEATMAP_MODULE: ModuleConfig = {
  id: 'vehicle-heatmap',
  label: '车辆',
  icon: MapPinned,
  component: VehicleHeatmapModule,
};

const HYDROGEN_HEATMAP_MODULE: ModuleConfig = {
  id: 'hydrogen-heatmap',
  label: '加氢',
  icon: MapPinned,
  component: HydrogenHeatmapModule,
};

const SCHEDULING_MODULE: ModuleConfig = {
  id: 'scheduling',
  label: '智能调度',
  icon: Activity,
  component: SchedulingModule,
};

const ENERGY_MODULES: ModuleConfig[] = [
  { id: 'hydrogen', label: '氢费BI', icon: Fuel, component: HydrogenModule },
  { id: 'electric', label: '电能', icon: Zap, component: ElectricModule },
  { id: 'etc', label: 'ETC', icon: Wallet, component: EtcModule },
];

/** 根据主路径和角色生成导航；返回新数组，避免调用方修改静态注册表。 */
export function buildModules(
  pathSet: PathSet,
  roles: readonly string[] | null | undefined,
): ModuleConfig[] {
  if (pathSet === 'energy') return [...ENERGY_MODULES];

  const heatmapChildren = canAccessEnergy(roles)
    ? [HYDROGEN_HEATMAP_MODULE, VEHICLE_HEATMAP_MODULE]
    : [VEHICLE_HEATMAP_MODULE];
  const modules: ModuleConfig[] = [
    ...ASSET_MODULES,
    { id: 'heatmap', label: '热力图', icon: MapPinned, children: heatmapChildren },
  ];
  if (canAccessScheduling(roles)) modules.push(SCHEDULING_MODULE);
  return modules;
}