/*
 * Copyright (c) 2017  STMicroelectronics – All rights reserved
 * The STMicroelectronics corporate logo is a trademark of STMicroelectronics
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions
 *   and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright notice, this list of
 *   conditions and the following disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name nor trademarks of STMicroelectronics International N.V. nor any other
 *   STMicroelectronics company nor the names of its contributors may be used to endorse or
 *   promote products derived from this software without specific prior written permission.
 *
 * - All of the icons, pictures, logos and other images that are provided with the source code
 *   in a directory whose title begins with st_images may only be used for internal purposes and
 *   shall not be redistributed to any third party or modified in any way.
 *
 * - Any redistributions in binary form shall not include the capability to display any of the
 *   icons, pictures, logos and other images that are provided with the source code in a directory
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
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package com.st.BlueMS.demos.util;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.ConnectivityManager;

import com.st.BlueSTSDK.gui.demos.DemoFragment;

/**
 * DemoFragment that will notify if the mobile has an internet connection
 */
public abstract class DemoWithNetFragment extends DemoFragment {

    /**
     * tell if the mobile has an internet connection
     * @return true if the system has an internet connection
     */
    protected boolean isOnline(){
        ConnectivityManager connMgr = (ConnectivityManager) getActivity().getSystemService(Context
                .CONNECTIVITY_SERVICE);
        return connMgr.getActiveNetworkInfo() != null &&
                connMgr.getActiveNetworkInfo().isAvailable() &&
                connMgr.getActiveNetworkInfo().isConnected();
    }

    private class OnConnectionStatusChange extends  BroadcastReceiver{
        @Override
        public void onReceive(Context context, Intent intent) {
            if(intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY,Boolean.FALSE)) {
                onSystemLostConnectivity();
            }else{
                onSystemHasConnectivity();
            }
        }//onReceive
    }
    private BroadcastReceiver mUpdateConnectionStatus=null;

    @Override
    public void startDemo () {
        super.startDemo();
        if(mUpdateConnectionStatus==null)
            mUpdateConnectionStatus = new OnConnectionStatusChange();
        getActivity().registerReceiver(mUpdateConnectionStatus, new IntentFilter(android.net
                .ConnectivityManager.CONNECTIVITY_ACTION));
        if(isOnline())
            onSystemHasConnectivity();
        else
            onSystemLostConnectivity();
    }

    @Override
    public void stopDemo() {
        super.stopDemo();
        Context c = getActivity();
        if(mUpdateConnectionStatus!=null && c!=null)
            getActivity().unregisterReceiver(mUpdateConnectionStatus);
    }

    /**
     * method called when the system has internet connection
     */
    protected void onSystemHasConnectivity(){};

    /**
     * method called when the system lost its internet connection
     */
    protected void onSystemLostConnectivity(){};

}
