/*
 * Author : ErVaLt / techwavedev.com
 * Description : TabLayout Andorid App
 */
package com.safemobile.dispatch;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Typeface;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.safemobile.adapters.ConversationGridViewAdapter;
import com.safemobile.adapters.MessagesGridViewAdapter;
import com.safemobile.lib.AppParams;
import com.safemobile.lib.Msg;
import com.safemobile.lib.OperationCodes;
import com.safemobile.lib.SM;
import com.safemobile.lib.SMS;
import com.safemobile.lib.Vehicle;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.Hashtable;
import java.util.Locale;

/**
 * fix import
 */

public class MessagesActivity extends Activity {
    /** Called when the activity is first created. */
	
	private MessagesGridViewAdapter mAdapter;
	private ConversationGridViewAdapter convAdapter;
	private ArrayList<Msg> listLastMessages = new ArrayList<Msg>();
	private ArrayList<Msg> listSpecificConversation = new ArrayList<Msg>();
	private ArrayList<Boolean> dispatcher_positions = new ArrayList<Boolean>();
	
	private GridView gridView;
	private Context context;
	private Activity activity;
	//private IconContextMenu iconContextMenu = null;
	
	private Hashtable<Long, ArrayList<SMS>> tableSMS = new Hashtable<Long, ArrayList<SMS>>();
	private Hashtable<String, Long> seqIDSMSHash = new Hashtable<String, Long>();
	
	// Need handler for callbacks to the UI thread
    private final Handler myHandler = new Handler();
    
	/* Visual resources */
	private LinearLayout layoutSend, layoutHeader, layoutHeaderConversation;
	private TextView textViewSelectedContact;
	private ImageView imageViewSelectedContact, imageBarcode;
	
	/* Buttons and EditBoxes */
	private ImageButton imageButtonAdd, imageButtonBack;
	private Button imageButtonSend;
	private EditText editTextMsg;
	
	private TabLayoutActivity parentTab;
	
	/* Message args */
	private int ACTION, MSGUpdate = 0;
	
	private ArrayList<String> allVehicleNames = new ArrayList<String>();
	public ArrayList<Vehicle> allVehicle = new ArrayList<Vehicle>();
	private Msg selectedVehicle;
	
	// tip of Messages and flag first load
	public boolean LASTMESSAGES = true;
	private boolean FIRST = true; 
	
	// store selected sc_id and selected unit_type
	public long sc_id=0;
	public int unit_type=0; 
	
	private String seqID;		// store sms seqId to set to ACK in adapter
	
	public Bundle savedInstanceState;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.savedInstanceState = savedInstanceState;
        
        // get parentTab
    	parentTab = (TabLayoutActivity)getParent();
    	
        context = this;
        activity = this;
        
        Locale locale = new Locale(AppParams.LANGUAGETMP);
        Locale.setDefault(locale);
        Configuration config = new Configuration();
        config.locale = locale;
        getBaseContext().getResources().updateConfiguration(config,
        getBaseContext().getResources().getDisplayMetrics());
        
        setContentView(R.layout.tabtext);
    	
        // get LayoutSend and hide
        layoutSend = (LinearLayout) findViewById(R.id.layoutSendMsg);
        layoutSend.setVisibility(View.GONE);
        // get header layout
        layoutHeader = (LinearLayout) findViewById(R.id.layoutHeader);
        layoutHeaderConversation = (LinearLayout) findViewById(R.id.layoutHeaderConversation);
        // show only header layout
        layoutHeaderConversation.setVisibility(View.GONE);
        
        // get SelectedContact TextView and ImageView
        textViewSelectedContact = (TextView) findViewById(R.id.textViewSelectedContact);
        imageViewSelectedContact = (ImageView) findViewById(R.id.imageViewSelectedContact);
        
        imageBarcode = (ImageView) findViewById(R.id.imageBarcode);
        imageBarcode.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				try         	
	        	{           		                     		 
	        		 Intent intent = new Intent("com.google.zxing.client.android.SCAN");
	                // intent.putExtra("SCAN_MODE", "ONE_D_MODE");
	                 startActivityForResult(intent, 0);
	        	}
	      		catch (Exception e) 
	       		{
	      			showErrorDialog(getResources().getString(R.string.barcodeError));
	       			//Log.d("Error",e.toString());
	       		}        
			}
		});
        
        // change tab header fontface
        TextView textView1 = (TextView) findViewById(R.id.textView1);
        textView1.setTypeface(Typeface.createFromAsset(getAssets(), "Sketch_Block.ttf"));
        textView1.setTextSize(24);

        // prepared arraylist and passed it to the Adapter class
        //mAdapter = new GridviewAdapter(this,listFrom, listMessages, listReceived);
        mAdapter = new MessagesGridViewAdapter(this, listLastMessages, context);
        convAdapter = new ConversationGridViewAdapter(this, listSpecificConversation, context, sc_id, unit_type, dispatcher_positions, new ArrayList<Boolean>());
        // Set custom adapter to gridview
        gridView = (GridView) findViewById(R.id.gridView1);
        gridView.setAdapter(mAdapter);
        
        // Implement On Item click listener
        gridView.setOnItemClickListener(new OnItemClickListener() 
        {
			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int position,
					long arg3) {
				//if (layoutHeader.getVisibility() == View.VISIBLE)
				if(LASTMESSAGES)
				{
					// get position
					Msg item = mAdapter.getItem(position);
					// get Specific Conversation
					sc_id = item.from.sc_id;
					SM.Debug("Selected sc_id: " + sc_id);
					// set Conversation type
					LASTMESSAGES = false; 
					// call get SMS
					GetSMS4unit(sc_id);
					// create crt_Vehicle
					unit_type = (int)item.from.driver_id;
					// save selected vehicle
					selectedVehicle = item;
					
				}
				
				if(AppParams.DEMO)
				{
					// modify UI
					ACTION = MSGUpdate;
					updateResultsInUi();
				}
			}
		});
     
        // button create message
        imageButtonAdd = (ImageButton) findViewById(R.id.imageButtonAdd);
        imageButtonAdd.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				showDialog();
			}
		});
        
        // button send message
        imageButtonSend = (Button) findViewById(R.id.imageButtonSend);
        imageButtonSend.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				
				//SM.Debug("SC ID:" + sc_id);
				
				SendSMS(sc_id, editTextMsg.getText().toString());				
				Toast.makeText(context, "Sending message...", 500).show();
				/*
				// show busy indicator
				dialogHandler.handleMessage(new Message());
				
				ACTION = SHOWLoading;
				myHandler.post(UpdateResults);
				*/
				// disable send button and editBox
				editTextMsg.setEnabled(false);
				imageButtonSend.setEnabled(false);
				
				new Thread(new Runnable() {
		    	    public void run() {
		    	    	try {
							Thread.sleep(500);
							myHandler.post(enableButtonRUN);
							
							//LASTMESSAGES = false;
							if(AppParams.DEMO)
							{
								Thread.sleep(5500);
								myHandler.post(demoReceveidSMSRUN);
							}
						} catch (InterruptedException e) {
							e.printStackTrace();
						}
						
		    	    }
		    	  }).start();
				
			}
		});
        
        // button back to conversations
        imageButtonBack = (ImageButton) findViewById(R.id.imageButtonBack);
        imageButtonBack.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// set LastMessage conversation type
				LASTMESSAGES = true;
				// refresh Grid
				GetLastSMS();
				if(AppParams.DEMO)
					updateResultsInUi();
			}
		});
        
        // get Message editText
        editTextMsg = (EditText) findViewById(R.id.editTextMsg);
        
        gridView.setId(1);	// id needed for IconContextMenu
        registerForContextMenu(gridView);
        parentTab.messageActivity = this;
    }
    
	// Create runnable for posting
    final Runnable demoReceveidSMSRUN = new Runnable() {
        public void run() {
        	parentTab.setImei(sc_id + "");
			parentTab.updateResultsInUi("realpha");
			
			 int timeGMT = (int) (System.currentTimeMillis() / 1000L);
		        String SendSMSSeqID = "1."+timeGMT;
		        // add mess to not ack list
				seqIDSMSHash.put(SendSMSSeqID, sc_id);
				// get sc_id conversation and add message
				ArrayList<SMS> crtSMSlist = tableSMS.get(sc_id);
				SMS sms = new SMS(0, 0, timeGMT, "i got your sms", 0, sc_id);
				sms.seq_idx = SendSMSSeqID;
				crtSMSlist.add(sms);
				
				// add message to listLast
				boolean exists = false;
				for (Msg msg : listLastMessages)
					// if conversation exists in lastMessages
					if(msg.from.sc_id == sc_id)
					{
						exists = true;
						msg.message = "i got your sms";
						msg.received = Calendar.getInstance().getTime();
					}
					
				// if last messages doesn't contain this conversation
				if(!exists)
				{
					Vehicle sentVehicle = null;
					for(Vehicle veh : allVehicle)
						if(veh.sc_id == sc_id)
							sentVehicle = veh;
					
					listLastMessages.add(new Msg(sentVehicle, "i got your sms", Calendar.getInstance().getTime(), SendSMSSeqID));
				}
					SM.Debug("time: " + timeGMT + "   |   " + Calendar.getInstance().getTime().toString() );
				
				updateResultsInUi();
			
        }
    };
    
    
    @Override
    public void onBackPressed()
    {
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	builder.setMessage(getString(R.string.exit))
    	       .setCancelable(false)
    	       .setNeutralButton(getString(R.string.logout), new DialogInterface.OnClickListener() {
    	           public void onClick(DialogInterface dialog, int id) {
    	        	   parentTab.whenBackPressed(AppParams.ActivityResult.logout);
    	           }
    	       })
    	       .setPositiveButton(getString(R.string.ext), new DialogInterface.OnClickListener() {
    	           public void onClick(DialogInterface dialog, int id) {
    	        	   parentTab.whenBackPressed(AppParams.ActivityResult.exit);
    	           }
    	       })
    	       .setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
    	           public void onClick(DialogInterface dialog, int id) {
    	                dialog.cancel();
    	           }
    	       });
    	AlertDialog alert = builder.create();
    	alert.show();
    }
    
    @Override
    public void onPause()
    {
    	super.onPause();
    	SM.Debug("onPause");
    }
    
    @Override
    public void onResume()
    {
    	super.onResume();
    	if(parentTab.getTCPState() != null){
    		if(FIRST)
    		{
    			UpdateVehs(parentTab.getAllVehicle());
    			FIRST = false;
    			if(LASTMESSAGES)
        			parentTab.executeNetworkStuff(new String[] {OperationCodes.GetLastSMS + "", AppParams.USERID + ""});
    		}
    		
    			//GetLastSMS();
    	}
    	SM.Debug("onResume");
    }

    public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        if (requestCode == 0) {
            if (resultCode == RESULT_OK) {
                String contents = intent.getStringExtra("SCAN_RESULT");
                String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
                editTextMsg.setText(editTextMsg.getText().toString() + contents);
                // Handle successful scan
                Toast.makeText(this, getResources().getString(R.string.barcodeContent) + ":"+contents+" with format:"+format, 6000).show();
            } else if (resultCode == RESULT_CANCELED) {
                // Handle cancel
            	//Toast.makeText(this, "TRY AGAIN", 6000).show();
            }
        }
    }
    
    
    
    // Request SMS 4 Unit from AppServer
    private void GetSMS4UnitWithTime(long sc_id, long time) {
    	if(!AppParams.DEMO) {
    		parentTab.executeNetworkStuff(new String[] {OperationCodes.GetRecentSMSs + "", sc_id + "", time + ""});
    		
    		SM.Debug(" ####   GetSMS4uni:" + sc_id);
    	}
    }
    
    private void GetSMS4unit(long sc_id)
	{
    	if(!AppParams.DEMO)
		{
	    	SM.Debug("GetSMS4unit : " + sc_id);
	    	ArrayList<SMS> listSMS = tableSMS.get(sc_id);
	    	long timeGMT = 0;
	    	if(!listSMS.isEmpty())
	    		timeGMT = listSMS.get(listSMS.size()-1).timeGMT;
	    	
	    	// error in DB
	    	if(String.valueOf(timeGMT).contains("."))
	    	{
	    		try {
	    			// remove the dot and the parse it to String
	    			timeGMT = Long.parseLong(String.valueOf(timeGMT).split(".")[1]); 	
				} 
	    		catch (Exception e) {
	    			timeGMT = Long.parseLong(String.valueOf(timeGMT).replace(".",""));
				}
	    		 
	    	}
	    	
	    	parentTab.executeNetworkStuff(new String[] {OperationCodes.GetRecentSMSs + "", sc_id + "", timeGMT + ""});
	    	
		    //parent.getRecentSMSs(sc_id, timeGMT);
		    SM.Debug(" ####   GetSMS4uni:" + sc_id);
		}
	}
	
 // Request Last SMS from AppServer 
	public void GetLastSMS()
	{
		if(!AppParams.DEMO)
		{
		    if(LASTMESSAGES)
		    	parentTab.executeNetworkStuff(new String[] {OperationCodes.GetLastSMS + "", AppParams.USERID + ""});
		    	//parent.getLastSMSs(AppParams.USERID);
		    else
		    {
		    	ArrayList<SMS> listSMS = tableSMS.get(sc_id);
		    	long timeGMT = 0;
		    	if(listSMS!= null && !listSMS.isEmpty())
		    		timeGMT = listSMS.get(listSMS.size()-1).timeGMT;
		    	//parent.getRecentSMSs(sc_id, timeGMT);
		    	parentTab.executeNetworkStuff(new String[] {OperationCodes.GetRecentSMSs + "", sc_id + "", timeGMT + ""});
		    }
		}
		else
			 updateResultsInUi();
	}
	
	
	private void SendSMS(long sc_id, String txt)
	{
		if(!AppParams.DEMO)
		{
	        int timeGMT = (int) (System.currentTimeMillis() / 1000L);
	        String SendSMSSeqID = "1."+timeGMT;
	        // add mess to not ack list
			seqIDSMSHash.put(SendSMSSeqID, sc_id);
			// get sc_id conversation and add message
			SMS sms = new SMS(0, 0, timeGMT, txt, sc_id, 0);
			sms.seq_idx = SendSMSSeqID;
			tableSMS.get(sc_id).add(sms);
	        //parent.sendSMS(SendSMSSeqID,sc_id, txt);
	        parentTab.executeNetworkStuff(new String[] {OperationCodes.SEND_TM + "", SendSMSSeqID, sc_id + "", txt});
			
	        updateResultsInUi();
		}
		else
		{
			int timeGMT = (int) (System.currentTimeMillis() / 1000L);
	        String SendSMSSeqID = "1."+timeGMT;
	        // add mess to not ack list
			seqIDSMSHash.put(SendSMSSeqID, sc_id);
			// get sc_id conversation and add message
			ArrayList<SMS> crtSMSlist = tableSMS.get(sc_id);
			SMS sms = new SMS(0, 0, timeGMT, txt, sc_id, 0);
			sms.seq_idx = SendSMSSeqID;
			crtSMSlist.add(sms);
			
			
			// add message to listLast
			boolean exists = false;
			for (Msg msg : listLastMessages)
				// if conversation exists in lastMessages
				if(msg.from.sc_id == sc_id)
				{
					exists = true;
					msg.message = txt;
					msg.received = Calendar.getInstance().getTime();
				}
				
			// if last messages doesn't contain this conversation
			if(!exists)
			{
				Vehicle sentVehicle = null;
				for(Vehicle veh : allVehicle)
					if(veh.sc_id == sc_id)
						sentVehicle = veh;
				
				listLastMessages.add(new Msg(sentVehicle, txt, Calendar.getInstance().getTime(), SendSMSSeqID));
			}
				SM.Debug("time: " + timeGMT + "   |   " + Calendar.getInstance().getTime().toString() );
			LASTMESSAGES = false;
			
			updateResultsInUi();
		}
	}
	
	// Update Vehicles received from AppServer 
	public void UpdateVehs(ArrayList<Vehicle> list)
	{
		SM.Debug("## UpdateVehs: " + list.size());
		allVehicle = list;
		allVehicleNames = new ArrayList<String>();
		for(Vehicle v: allVehicle)
    		allVehicleNames.add(v.name);
		
		if(tableSMS.size() == 0)
		{
			for(Vehicle veh: allVehicle)
			{
				ArrayList<SMS> lista = new ArrayList<SMS>();
				// populate conversation list if demo
				if(AppParams.DEMO)
					lista = getDemoConversation(veh.sc_id);
				
				tableSMS.put(veh.sc_id, lista);
			}
		}
	}
	
	
	// gets DEMO conversations
	private ArrayList<SMS> getDemoConversation(long sc_id)
	{
		ArrayList<SMS> lista = new ArrayList<SMS>();
		if(sc_id == 101)
			lista.add(new SMS(1, 2, 1324016412, "Only one left", 101, 0));
		else if (sc_id == 102)
			lista.add(new SMS(1, 2, 1328060100, "i'm at the train station", 0, 102));
		else if (sc_id == 103) {
			lista.add(new SMS(1, 2, 1121016637, "Where are you now?", 103, 0));
			lista.add(new SMS(2, 2, 1121016693, "Near Elementary School 81", 0, 103));
			lista.add(new SMS(3, 2, 1121016693, "We have a client on Belmont Ave", 103, 0));
			lista.add(new SMS(4, 2, 1121016724, "It's only 4 blocks away", 103, 0));
			lista.add(new SMS(5, 2, 1121016693, "Can you take him?", 103, 0));
			lista.add(new SMS(6, 2, 1121016818, "I'll be right there", 0, 103));
		}
		else if (sc_id == 105) 
			lista.add(new SMS(1, 2, 1328061660, "Thanks", 0, 105));
		return lista;
	}
	
	
	
	public void UpdateSMS(ArrayList<SMS> list)
	{
		SM.Debug("## UpdateSMS: " + list.size() + "  [LASTMESSAGES:" + LASTMESSAGES + "]");
		
		// populate listLastMessages
		if(LASTMESSAGES)
		{
			listLastMessages = new ArrayList<Msg>();
			for(SMS sms: list)
			{
				// get for sender
				long id_sender = sms.sc_id_dest;	
				if (id_sender == 0) 
					id_sender = sms.sc_id_sour;
				//SM.Debug(sms.toString());
				// get vehicle with sender id
				Vehicle messageVeh=  null;
				messageVeh = getVehicleById(id_sender);
				listLastMessages.add(0,new Msg(messageVeh, sms.mess, new Date((long)sms.timeGMT * 1000), sms.seq_idx));
			}
			
			// update GridView
			
			//SM.Debug(" ########### " + parentTab.allVehicle.size() + " ||| " + listLastMessages.size());
			
			mAdapter = new MessagesGridViewAdapter(activity, listLastMessages, context);
			//SM.Debug("list count : " + listLastMessages.size());
			//gridView.setAdapter(mAdapter);
			//mAdapter.notifyDataSetChanged();
		}
		else
		{
			// add new values to hashTable for key = sc_id
			ArrayList<SMS> listScId = tableSMS.get(sc_id);
			if(list.size() != 0)
				for(SMS sms:list)
				{
					// compare last item in hashList with first elem in arrived list
					// protect is listSc_Id size = 0
					if ((listScId.size()>0)&&(sms.sc_id_dest == listScId.get(listScId.size()-1).sc_id_dest && sms.sc_id_sour == listScId.get(listScId.size()-1).sc_id_sour && sms.mess == listScId.get(listScId.size()-1).mess))
						// drop element 
						;
					else
						listScId.add(sms);
				}
		}
		// modify UI
		ACTION = MSGUpdate;
		myHandler.post(new Runnable() {
			@Override
			public void run() {
				updateResultsInUi();
			}
		});
	}
    
	// Confirmation for sending message
	public void ConfirmSMS(String data, final String seqID)
	{
		SM.Debug("ConfirmSMS");
		if(data.equals("0"))
		{
			SM.Debug("Error on sending SMS");
			showErrorDialog("Error on sending message.");
		}
		else 
		{
			SM.Debug("ACK received for text message");
			
			//get sc_id for crt message 
			long sc_id = seqIDSMSHash.get(seqID);
			// get SMS list for crt sc_id
			ArrayList<SMS> crtSMSList = tableSMS.get(sc_id);
			for(SMS sms: crtSMSList)
			{
				
				if(sms.seq_idx.equals(seqID))
				{
					SM.Debug("######### AM SCHIMBAT STATUSUL pt: " + sms.mess + "   |  " + sc_id + "   |  " + seqID  + "   ||  " + sms.seq_idx);
					// set ACK 
					sms.status = 2;
				}
			}
			// remove message from seqIDSMS Hash = don't wait confirmation for it
			seqIDSMSHash.remove(seqID);
			
			// refresh MSG List
			//GetSMS4unit(sc_id);
			
			/*
			// TODO -> this is a small bug fix, should talk with Bigu to change it 
			// remove message from list because it will be brought back by GetSMS4Unit, and it will have different time
			ArrayList<SMS> listWithTextMessage = tableSMS.get(sc_id);
			if(listWithTextMessage.size() > 0)
				listWithTextMessage.remove(listWithTextMessage.size() - 1);		// remove last message
			 */

			// store sms seqId to set to ACK in adapter
			this.seqID = seqID;
			myHandler.post(new Runnable() {
				@Override
				public void run() {
					convAdapter.setACK(seqID);
					convAdapter.changeView(seqID);
					convAdapter.notifyDataSetChanged();
				}
			});
			
			myHandler.post(new Runnable() {
				@Override
				public void run() {
					// clear text
	        		editTextMsg.setText("");
				}
			});
			
		}
	}
	
    
	public void NewSMS(String imei, String message, final long time)
	{
		SM.Debug(" ## NewSMS: " + imei + " | " + message);
		if(!LASTMESSAGES)
		{
			// if received message from current conversation
			if(getVehicleByImei(imei).sc_id == sc_id)
				GetSMS4UnitWithTime(sc_id, time); // refresh MSG List
			//else
			//	parentTab.myHandler.post(parentTab.showPopUpRUN);	// show PopUp
		}
		else 
			GetLastSMS();		// get last SMS
	}
	
	
	// Create runnable for posting
    final Runnable enableButtonRUN = new Runnable() {
        public void run() {
            updateEnableButtonsUI();
        }
    };

    // enable buttons in UI after 200ms from send
	private void updateEnableButtonsUI()
	{
		// enable buttons
		imageButtonSend.setEnabled(true);
		editTextMsg.setEnabled(true);
		editTextMsg.setText("");
	}
	
	private void updateResultsInUi()
	{
		if(allVehicle == null)
			UpdateVehs(parentTab.getAllVehicle());
		
        	//SM.Debug("updateResultsInUi: " + ACTION);
        	if(ACTION == MSGUpdate)
        	{
	        	if(LASTMESSAGES)
	        	{
	        		// show Header Layout
					layoutHeader.setVisibility(View.VISIBLE);
					// hide Conversation Header Layout
					layoutHeaderConversation.setVisibility(View.GONE);
					// hide Send Layout
					layoutSend.setVisibility(View.GONE);
					// change GridView adapter
					gridView.setAdapter(mAdapter);
					gridView.invalidate();
	        	}
	        	else
        		{
        			SM.Debug(" ####   Modify adapter for SMS4unit");
	        		// populate specific conversation
	    			listSpecificConversation = new ArrayList<Msg>();
	    			dispatcher_positions = new ArrayList<Boolean>();
	    			ArrayList<Boolean> ackPosition = new ArrayList<Boolean>();
	    			ArrayList<SMS> list;
	    			list = tableSMS.get(sc_id);
	    			for(SMS sms: list)
	    			{
	    				// get for sender
	    				long id_sender = sms.sc_id_dest;	
	    				if (id_sender == 0) 
	    					id_sender = sms.sc_id_sour;
	    				// get vehicle with sender id
	    				Vehicle messageVeh=  null;
	    				messageVeh = getVehicleById(id_sender);
	    				// flag dispatcher message when source is 0 
	    				dispatcher_positions.add(sms.sc_id_sour==0 ? true : false);
	    				if(sms.status == 2)
	    					ackPosition.add(true);
	    				else
	    					ackPosition.add(false);
	    				
	    				listSpecificConversation.add(new Msg(messageVeh, sms.mess, new Date((long)sms.timeGMT * 1000), sms.seq_idx));
	    			}
	    			
	    			
	    			convAdapter = new ConversationGridViewAdapter(activity, listSpecificConversation, context, sc_id, unit_type, dispatcher_positions, ackPosition);
	        		gridView.setAdapter(convAdapter);
	        		if(listSpecificConversation.size() > 0)
	        			gridView.setSelection(listSpecificConversation.size()-1);
	        		
	        		// set unit name and image in Header Conversation
					textViewSelectedContact.setText(getVehicleBySc_Id(sc_id).name);
					imageViewSelectedContact.setImageResource(getVehicleBySc_Id(sc_id).getLargeIcon());
					
					// clear editText
					editTextMsg.setText("");
					
					// change layouts visibility
					layoutSend.setVisibility(View.VISIBLE);
					layoutHeader.setVisibility(View.GONE);
					layoutHeaderConversation.setVisibility(View.VISIBLE);
					
        		}
	    		gridView.invalidate();
	    		// hide dialog
	    		try
	    		{
	    			//dialogLoading.cancel();
	    		}
	    		catch(Exception ex)
	    		{
	    			;
	    		}
        	}
}
	
	// show new message after layoutNewMessage Click
	public void showSMS4unit(int sc_id)
	{
		// show dialog
		//dialogLoading = ProgressDialog.show(activity, "", "Loading messages. Please wait...", true);
		
		ACTION = MSGUpdate;
		LASTMESSAGES = false;
		GetSMS4unit(sc_id);
	}
	
	// gets Vehicle from id
	public Vehicle getVehicleById(long id_vehicle)
	{
		for(Vehicle vehicle: allVehicle)
				if(vehicle.sc_id == id_vehicle)
					return vehicle;
		return null;
	}
    
	// get Vehicle from imei
	public Vehicle getVehicleByImei(String imei)
	{
		for(Vehicle vehicle: allVehicle)
			if(vehicle.imei.equalsIgnoreCase(imei))
				return vehicle;
		return null;
	}
	
	
	public Vehicle getVehicleBySc_Id(long sc_id)
	{
		for(Vehicle vehicle: allVehicle)
			if(vehicle.sc_id == sc_id)
				return vehicle;
		return null;
	}
	
    // show a dialog
	public void showDialog()
	{
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.template_simple_list_item, allVehicleNames); 
		
		AlertDialog.Builder builder = new AlertDialog.Builder(context);
		builder.setTitle(getString(R.string.selectVehicle));
		builder.setAdapter(adapter , new DialogInterface.OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				// get position
				Vehicle item = allVehicle.get(which);
				// get Specific Conversation
				sc_id = item.sc_id;
				SM.Debug("Selected sc_id: " + sc_id);
				// set Conversation type
				LASTMESSAGES = false; 
				// call get SMS
				GetSMS4unit(sc_id);
				// create crt_Vehicle
				unit_type = (int) item.driver_id;
				
				SM.Debug("AM SELECTAT: " + sc_id + " | " + item.name + " | " + unit_type + "\n\t " + item.toString());
				selectedVehicle = new Msg(item, "", Calendar.getInstance().getTime(), "");
				
				if(AppParams.DEMO)
					updateResultsInUi();
				}
			});
		AlertDialog alert = builder.create();
		alert.show();
	}
    

	public void showErrorDialog(String errorMsg)
	{
		Dialog dialog = new Dialog(context);
		dialog.setTitle(getString(R.string.sendingError));
		dialog.setContentView(R.layout.dialog);
		dialog.setCancelable(true);
		dialog.setCanceledOnTouchOutside(true);

		TextView text = (TextView) dialog.findViewById(R.id.text);	
		ImageView image = (ImageView) dialog.findViewById(R.id.image);
		
		image.setImageResource(R.drawable.error);
		text.setText(errorMsg);
		dialog.show();
	}
}