yt-jdbapp/entry/src/main/ets/pages/tabs/MineTab.ets

import promptAction from '@ohos.promptAction';
import { router } from '@kit.ArkUI';
import { contextConstant } from '@kit.AbilityKit';
import { fileIo, storageStatistics } from '@kit.CoreFileKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { yTToast } from '../../utils/YTToast';

@Component
export struct MineTab {
  @State cacheSize: string = '0.00';

  aboutToAppear() {
    // Simulate getting cache size
    this.getCache()
  }

  // 获取应用数据空间大小
  getCache(): string {
    storageStatistics.getCurrentBundleStats((error: BusinessError, bundleStats: storageStatistics.BundleStats) => {
      if (error) {
      } else {
        this.cacheSize = `${(bundleStats.cacheSize / 1024 / 1024).toFixed(2)}MB`
      }
    });
    return this.cacheSize
  }

  clearCacheTask(dir: string): Promise<boolean> {
    return new Promise((resolve) => {
      fileIo.access(dir).then((exist: boolean) => {
        if (exist) {
          fileIo.rmdir(dir)
        }
        resolve(true)
      })
    })
  }

  clearCache() {
    yTToast.alertToast({
      text: '清理缓存',
      message: '确定清理当前应用的所有缓存数据？',
      confirmMessage: '确定',
      cancelMessage: '取消',
      isShowClose: false,
      onConfirm: async () => {
        this.cacheSize = '0.00';
        let context: Context = getContext(this)
        context.getApplicationContext().area = contextConstant.AreaMode.EL1;
        context.area = contextConstant.AreaMode.EL1;
        const el1AppCacheDir = context.getApplicationContext().cacheDir
        const el1HapCacheDir = context.cacheDir
        context.getApplicationContext().area = contextConstant.AreaMode.EL2;
        context.area = contextConstant.AreaMode.EL2;
        const el2AppCacheDir = context.getApplicationContext().cacheDir
        const el2HapCacheDir = context.cacheDir

        const task = [
          this.clearCacheTask(el1AppCacheDir),
          this.clearCacheTask(el1HapCacheDir),
          this.clearCacheTask(el2AppCacheDir),
          this.clearCacheTask(el2HapCacheDir)
        ]
        await Promise.all(task)
        let cache = this.getCache()
        // if (cache == '0.00MB') {
        //   promptAction.showToast({ message: '清除完毕' })
        // } else {
        //   //未清理完毕，递归
        //   await this.clearCache()
        // }


        promptAction.showToast({ message: '清理成功' });
        yTToast.hide()
      },
      onCancel: () => {
        yTToast.hide()
      }

    })
  }

  build() {
    Column() {
      // Top BG (Simulated)
      Stack() {
        Image($r('app.media.logo')) // Assuming logo exists
          .width(118)
          .height(118)
          .borderRadius(12)
          .shadow({ radius: 10, color: '#00000010' })
      }
      .width('100%')
      .height('30%')
      .alignContent(Alignment.Center)
      .backgroundColor('#FBE3EB') // Simple background color

      Column() {
        Text('小易旅记').fontSize(16).fontWeight(FontWeight.Medium).margin({ top: 20, bottom: 40 })

        // Menu Items
        this.MenuItem('用户协议', () => {
          router.pushUrl({
            url: '/pages/UserAgreement'.slice(1)
          })
        })
        this.MenuItem('隐私协议', () => {
          router.pushUrl({
            url: '/pages/Privacy'.slice(1)
          })
        })
        this.MenuItem('意见反馈', () => {
          router.pushUrl({
            url: '/pages/SuggestionPage'.slice(1)
          })
        })
        this.MenuItem('数据缓存', () => {
          this.clearCache()
        }, this.cacheSize + ' MB')

      }
      .width('100%')
      .layoutWeight(1)
      .backgroundColor(Color.White)
      .borderRadius({ topLeft: 30, topRight: 30 })
      .margin({ top: -30 })
      .padding({ top: 30, left: 24, right: 24 })
    }
    .width('100%')
    .height('100%')
    .backgroundColor('#F5F7FA')
  }

  @Builder
  MenuItem(title: string, onClick: () => void, rightText?: string) {
    Row() {
      Text(title).fontSize(14).fontColor('#303030')
      Row() {
        if (rightText) {
          Text(rightText).fontSize(14).fontColor('#070202').margin({ right: 8 })
        }
        Image($r('app.media.right_arrow_icon'))
          .width(24).height(24)
      }
    }
    .width('100%')
    .height(48)
    .onClick(onClick)
    .border({ width: { bottom: 1 }, color: '#F2F2F7' })
    .margin({ bottom: 10 })
    .justifyContent(FlexAlign.SpaceBetween)
  }
}