import { AbilityConstant, UIAbility, Want } from ‘@kit.AbilityKit’;

import { hilog } from ‘@kit.PerformanceAnalysisKit’;

import { window } from ‘@kit.ArkUI’;

import { cloudFunction } from ‘@kit.CloudFoundationKit’;

export default class EntryAbility extends UIAbility {

  functionPreload() {

    let promise = cloudFunction.call({

      name: “function_name”, // 预加载缓存数据的云函数名称

      timeout: 3 * 1000, // 获取缓存数据的超时时间

      loadMode: cloudFunction.LoadMode.PRELOAD   // 获取缓存数据必须设置为PRELOAD

    });

    promise.then((data: cloudFunction.FunctionResult) => { // 接口调用成功处理缓存的应用数据

      hilog.info(0x0000, ‘testTag’, ‘get preload cache successfully’);

      let getStr = data.result; // data.result即是缓存的应用数据

      // todo 处理getStr

    }).catch((err: Error) => {

      hilog.error(0x0000, ‘testTag’, ‘fail to get preload cache: %{public}s’, err.message);

      this.functionNormal(); // 使用普通方式获取应用数据

    })

  }

  functionNormal() {

    hilog.info(0x0000, ‘testTag’, ‘promise start’);

    let promise = cloudFunction.call({

      name: “function_name”,

      timeout: 5 * 1000,

      loadMode: cloudFunction.LoadMode.NORMAL    // 默认为NORMAL, 接口会调用云函数从云服务器获取应用数据

    });

    promise.then((data: cloudFunction.FunctionResult) => {

      hilog.info(0x0000, ‘testTag’, ‘call function successfully’);

      let getStr = data.result; // data.result即是缓存的应用数据

      // todo 处理getStr

    }).catch((err: Error) => {

      hilog.info(0x0000, ‘testTag’, ‘fail to call function: %{public}s’, err.message);

    })

  }

  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {

    hilog.info(0x0000, ‘testTag’, ‘%{public}s’, ‘Ability onCreate’);

    this.functionPreload(); // 在应用启动时调用函数获取应用数据

  }

}