import { Network } from '@ionic-native/network';
import { Injectable } from '@angular/core';
import { Platform } from 'ionic-angular';

@Injectable()
export class NetworkSvc {

    constructor(public network: Network, public platform: Platform) { }
    isDeviceOnline(callback) {
        var isOnline: Boolean;
        if (this.platform.is('cordova')) {
          return this.network.onConnect().subscribe(res => {
            alert("on connect sub value=>>" + JSON.stringify(res));
            if (res.type == "online") {
              isOnline = true;
              // callback(isOnline);
              // alert("is online return value=>>" + isOnline);
            } else {
              isOnline = false;
              // callback(isOnline);
            }
            callback(isOnline);
          });
        }else{
          callback(navigator.onLine);
        }
      }
      
      isDeviceOffline(callback) {
        var isOffline: Boolean;
        if (this.platform.is('cordova')) {
          this.network.onDisconnect().subscribe(sus => {
            if(sus.type== "offline"){
              isOffline=true;
            }else{
              isOffline=false;
            }
            callback(isOffline);
          });
        }else{
          callback(!navigator.onLine);
        }
      }

    // return network type
    getNetworkType() {
        return this.network.type;
    }

}