com.smartgo
 ├─ base
 │   ├─ network         網絡與請求管理
 │   ├─ storage         數據緩存
 │   └─ utils           工具函數與日誌
 ├─ service
 │   ├─ navigation      導航服務
 │   ├─ user            用户管理
 │   └─ feedback        反饋與日誌收集
 ├─ distributed
 │   ├─ connect         設備連接
 │   ├─ stateSync       狀態同步機制
 │   └─ transfer        數據傳輸與控制
 └─ ui
     ├─ pages           頁面結構
     ├─ components      公共組件
     └─ themes          主題與樣式

import cloudDBZoneConfig from '@ohos/cloudDB.cloudDBZoneConfig';
import cloudDBZone from '@ohos/cloudDB.cloudDBZone';

// 初始化 CloudDBZone
async function initCloudDB(): Promise<void> {
  try {
    const config: cloudDBZoneConfig = {
      cloudDBZoneName: 'SmartGoZone',
      userId: await getUserId(), // 獲取當前用户ID
      persistenceDir: '/data/user/0/com.smartgo/files/cloud_db'
    };
    const cloudZone: cloudDBZone = await cloudDBZone.getCloudDBZone(config);
    console.info('CloudDBZone initialized successfully');
  } catch (error) {
    console.error('Failed to initialize CloudDBZone: ' + JSON.stringify(error));
  }
}

// 插入用户歷史路線數據
async function insertRouteData(routeData: ObjectType<NavigationRoute>): Promise<void> {
  const cloudZone: cloudDBZone = await cloudDBZone.getCloudDBZone(/* config */);
  const objectType: CloudDBObjectType<NavigationRoute> = new ObjectType(/* schema */);
  const zoneObjects: Array<CloudDBZoneObject<NavigationRoute>> = [new CloudDBZoneObject(routeData, objectType)];
  await cloudZone.executeUpsert(zoneObjects);
}

import deviceManager from '@ohos.distributedHardware.deviceManager';
import softBus from '@ohos.distributedSoftBus';

// 初始化 DeviceManager
async function initDeviceManager(): Promise<void> {
  try {
    await deviceManager.init();
    console.info('DeviceManager initialized');
  } catch (error) {
    console.error('DeviceManager init failed: ' + error);
  }
}

// 搜索附近設備
async function discoverDevices(): Promise<Array<DeviceInfo>> {
  const discoveryConfig: DiscoveryConfig = {
    strategy: DiscoveryStrategy.PARTIAL,
    capability: 'smartgo_navigation'
  };
  return new Promise((resolve, reject) => {
    deviceManager.startDeviceDiscovery(discoveryConfig, (err: BusinessError, deviceInfos: Array<DeviceInfo>) => {
      if (err.code === 0) {
        resolve(deviceInfos);
      } else {
        reject(err);
      }
    });
  });
}

// 通過 SoftBus 同步導航狀態
async function syncNavigationState(targetDeviceId: string, state: NavigationState): Promise<void> {
  const sessionId: number = await softBus.createSession(targetDeviceId);
  const message: Uint8Array = JSON.stringify(state).toUint8Array();
  softBus.sendMessage(sessionId, message);
  console.info('Navigation state synced to device: ' + targetDeviceId);
}

// entry/src/main/ets/EntryAbilityImpl.ets
@Entry
@Component
struct EntryAbilityImpl {
  @State stage: number = 1;

  aboutToAppear() {
    this.loadStage1();
  }

  async loadStage1() {
    // Stage 1: 核心依賴加載
    await initCoreServices();
    this.stage = 2;
    await this.loadStage2();
  }

  async loadStage2() {
    // Stage 2: UI 初始化，使用骨架屏
    this.renderSkeletonScreen();
    // 異步加載地圖
    AppStorage.setOrCreate('mapLoaded', false);
    setTimeout(async () => {
      await loadMapComponent();
      AppStorage.setOrCreate('mapLoaded', true);
      this.stage = 3;
      this.loadStage3();
    }, 100);
  }

  async loadStage3() {
    // Stage 3: 後台任務
    this.startBackgroundSync();
  }
}