import socket from '@ohos.net.socket';
let tcp = socket.constructTCPSocketInstance();

tcp.bind({address: '0.0.0.0', port: 12121, family: 1}, err => {
  if (err) {
    console.log('bind fail');
    return;
  }
  console.log('bind success');
})
tcp.on('message', value => {
  console.log("on message, message:" + value.message + ", remoteInfo:" + value.remoteInfo)
  let da = resolveArrayBuffer(value.message);
  let dat_buff = String(da);
//此處對(duì)接受到的數(shù)據(jù)進(jìn)行處理
});
//將接受到的數(shù)據(jù)轉(zhuǎn)化為文本型           
function resolveArrayBuffer(message){
  if (message instanceof ArrayBuffer) {
    let dataView = new DataView(message)
    let str = ""
    for (let i = 0;i < dataView.byteLength; ++i) {
      let c = String.fromCharCode(dataView.getUint8(i))
      if (c !== "\n") {
        str += c
      }
    }
    return str;
  }
}
//數(shù)據(jù)的發(fā)送函數(shù)
function send_once(Con_buff) {
  if (flag == false) {
    let promise = tcp.connect({ address: { address: 'xxx.xxx.xxx.xxx', port: xxxx, family: 1 }, timeout: 2000 });
    promise.then(() => {
      console.log('connect success');
      flag = true;
      tcp.send({
        data: Con_buff
      }, err => {
        if (err) {
          console.log('send fail');
          return;
        }
        console.log('send success');
      })
    }).catch(err => {
      console.log('connect fail');
    });
  } else if (flag == true) {
    tcp.send({
      data: Con_buff
    }, err => {
      if (err) {
        console.log('send fail');
        return;
      }
      console.log('send success');
    })
  }
}

let varA = AppStorage.Link('varA')
let envLang = AppStorage.Prop('languageCode')
@Entry
@Component
struct ComponentA {
  @StorageLink('varA') varA: number = 2
  @StorageProp('languageCode') lang: string = 'en'
  private label: string = 'count'

  private aboutToAppear() {
    this.label = (this.lang === 'zh') ? '數(shù)' : 'Count'
  }
  build() {
    Row({ space: 20 }) {

      Button(`${this.label}: ${this.varA}`)
        .onClick(() => {
          AppStorage.Set<number>('varA', AppStorage.Get<number>('varA') + 1)
        })
      Button(`lang: ${this.lang}`)
        .onClick(() => {
          if (this.lang === 'zh') {
            AppStorage.Set<string>('languageCode', 'en')
          } else {
            AppStorage.Set<string>('languageCode', 'zh')
          }
          this.label = (this.lang === 'zh') ? '數(shù)' : 'Count'
        })
    }
  }
}

let Rc_message = AppStorage.Link('Rc_message')
@StorageLink('Rc_message') Rc_message: String = '收到消息'
      Text(`${this.Rc_message}`)
        .width("98%")
        .height("35%")
        .borderStyle(BorderStyle.Solid).borderWidth(8).borderColor(0xAFEEEE).borderRadius(20)
        .fontSize(25)

tcp.on('message', value => {
  console.log("on message, message:" + value.message + ", remoteInfo:" + value.remoteInfo)
  let da = resolveArrayBuffer(value.message);
  let dat_buff = String(da);
  AppStorage.Set<String>('Rc_message',dat_buff);
//AppStorage.Set<String>('ID_1_stata','rgba(0, 109, 229, 0.95)');
});