package com.example.chat;

import java.util.List;

import com.example.chat.R;

import android.app.Activity;
import android.app.ActionBar;
import android.app.Fragment;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.wifi.p2p.WifiP2pManager;
import android.net.wifi.p2p.WifiP2pManager.Channel;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
import android.os.Build;

public class MainActivity extends Activity {

 
 private boolean isWifiP2pEnabled = false;

 
 private BroadcastReceiver receiver = null;

 private Button click;
 
 //to access wifi states
 private final IntentFilter intentFilter = new IntentFilter();
 //for log purposes
  public static final String TAG = "wifidirectdemo";
  
 
 //wifi channel 
  Channel mChannel;
  
  WifiP2pManager mManager;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  click = (Button) findViewById(R.id.click);
  
  
  
  
  
  
     //WIFI P2P CODE - changes in the wifi states
    //  Indicates a change in the Wi-Fi P2P status.
        intentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);

        // Indicates a change in the list of available peers.
        intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);

        // Indicates the state of Wi-Fi P2P connectivity has changed.
        intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);

        // Indicates this device's details have changed.
        intentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);

    
        
     mManager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
        mChannel = mManager.initialize(this, getMainLooper(), null);

     click.setOnClickListener(new OnClickListener()
           {
      //on click start the device discovery
      public void onClick(View arg0) 
            {
       
//               Intent intent = new Intent(context, Activity2.class);
 //                    startActivity(intent);  
                   
       mManager.discoverPeers(mChannel, new WifiP2pManager.ActionListener() {

              @Override
              public void onSuccess() {
                  // Code for when the discovery initiation is successful goes here.
                  // No services have actually been discovered yet, so this method
                  // can often be left blank.  Code for peer discovery goes in the
                  // onReceive method
               
               //simply display discovery successfully initiated!
               
               Toast.makeText(getApplicationContext(), "discovery initiated!",
                    Toast.LENGTH_SHORT).show();
              //after this is succesfully initiated all the control goes to the onrecieve method in the other file!
              
              }

              @Override
              public void onFailure(int reasonCode) {
                  // Code for when the discovery initiation fails goes here.
                  // Alert the user that something went wrong.
               Toast.makeText(getApplicationContext(), "discovery failed",
                    Toast.LENGTH_SHORT).show();
              }
      });
            }
           }

             
          );//end of onclick();

  
  
  

  if (savedInstanceState == null) {
   getFragmentManager().beginTransaction()
     .add(R.id.container, new PlaceholderFragment()).commit();
  }
 }

  /******************************************************************************/
    public void setIsWifiP2pEnabled(boolean isWifiP2pEnabled) {
        this.isWifiP2pEnabled = isWifiP2pEnabled;
    }

 
 @Override
    public void onResume() {
        super.onResume();
        receiver = new WifiDirectBroadCastReceiver(mManager, mChannel, this);
        registerReceiver(receiver, intentFilter);
     Toast.makeText(getApplicationContext(), "...registering...",
       Toast.LENGTH_SHORT).show();

    }

    @Override
    public void onPause() {
        super.onPause();
        unregisterReceiver(receiver);
    }
 
    public void updatedevicescreen(List peers)
    {
       ListView list;
          list = (ListView)findViewById(R.id.devicelist);
     
     String wifis[];
     wifis = new String[peers.size()];
        for(int i = 0; i < peers.size(); i++){
           wifis[i] = ((peers.get(i)).toString());
        }
     
        

        list.setAdapter(new ArrayAdapter<String>(getApplicationContext(),
        android.R.layout.simple_list_item_1,wifis));
    }


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {

  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }

 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // Handle action bar item clicks here. The action bar will
  // automatically handle clicks on the Home/Up button, so long
  // as you specify a parent activity in AndroidManifest.xml.
  int id = item.getItemId();
  if (id == R.id.action_settings) {
   return true;
  }
  return super.onOptionsItemSelected(item);
 }

 /**
  * A placeholder fragment containing a simple view.
  */
 public static class PlaceholderFragment extends Fragment {

  public PlaceholderFragment() {
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
   View rootView = inflater.inflate(R.layout.fragment_main, container,
     false);
   return rootView;
  }
 }

}