package com.grundfos.android.people;

import java.io.File;
import java.util.Date;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;

public class PeopleList extends ListActivity {

	
	public static final int DOWNLOAD = 1010;
	public static final int ABOUT = 1011;
	
	public static final String PREF_LAST_DB_UPDATE = "LastDbUpdate";
	public static final String PREFS = "PeoplePrefs";
	
	PeopleDatabase peopleDB;

	Dialog dialog;
	SimpleCursorAdapter adapter; 
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        peopleDB = new PeopleDatabase(this);
        
        
    	adapter = new SimpleCursorAdapter(this,
    		    R.layout.row, // Use a template
    		                                          // that displays a
    		                                          // text view
    		    null , // Give the cursor to the list adatper
    		    new String[] { "name", "inits", "company" }, // Map the NAME column in the
    		                                         // people database to...
    		    new int[] {R.id.name, R.id.init, R.id.company}); // The "text1" view defined in
    		                                     // the XML template

    	 setListAdapter( adapter ) ;
        
        EditText et = (EditText) findViewById( R.id.entry);
        et.setOnEditorActionListener( new OnEditorActionListener() {
        	public boolean  onEditorAction  (TextView v, int actionId, KeyEvent event) {
        		Log.e("Atest", "asd: " + event );
        		return true;
        	}
        	
        });
        et.addTextChangedListener( new TextWatcher() {
        	public void afterTextChanged(Editable s) {
        		searchStringChanged(s.toString());
        	}
        	public void onTextChanged(CharSequence s, int start, int before, int count){
        	}
        	public void beforeTextChanged(CharSequence s, int start, int count, int after){
        	}
        });
        
        
        if ( peopleDB.getPeopleCount() == 0)
        	onEmptyDB();
        
        
        Log.i("PeopleList", "Activity started");        
    }
    

    
    
    @Override
	protected void finalize() throws Throwable {
    	peopleDB.close();
		super.finalize();
	}



	public void onEmptyDB()
    {
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setMessage("Database is empty, download data now?")
		       .setCancelable(false)
		       .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
		           public void onClick(DialogInterface dialog, int id) {
		                dialog.dismiss();
		                loadDatabase();
		           }
		       })
		       .setNegativeButton("No", new DialogInterface.OnClickListener() {
		           public void onClick(DialogInterface dialog, int id) {
		                dialog.cancel();
		           }
		       })
		       .show();    
    }
    
    public void searchStringChanged(String search)
    {
    	Cursor names = null;
    	if (search.trim().length() >= 2)
    		names = peopleDB.getPeopleList(search);

    	adapter.changeCursor(names);
    	adapter.notifyDataSetChanged();
    }
    
    protected void  onListItemClick  (ListView l, View v, int position, long id)
    {
    	Intent intent = new Intent(this, PeopleDetails.class);
    	intent.putExtra("id", id);
    	startActivity(intent);
    }


	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		
		switch (item.getItemId()) {
		case DOWNLOAD:
			loadDatabase();
			return true;
		case ABOUT:
			showAbout();
			return true;
		}
		
		return super.onOptionsItemSelected(item);
	}


	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		menu.add(0, DOWNLOAD, 0, "Download DB");
		menu.add(0, ABOUT, 0, "About");
		return true;

	}
	
	
	public void showAbout() {
		SharedPreferences settings = getSharedPreferences(PREFS, 0);
		StringBuffer message = new StringBuffer();
		message.append("Grundfos People v0.1\n");
		message.append("By Torben Hørup Nielsen\n");
		message.append("Database size: ").append(peopleDB.getPeopleCount()).append("\n");
		message.append("Last DB update: ").append( settings.getString(PREF_LAST_DB_UPDATE, " - never -"));
		
		showMessage(message.toString());

	}
	
	public void showMessage(String message) {
		AlertDialog.Builder builder = new AlertDialog.Builder(this);
		builder.setMessage(message)
		       .setCancelable(false)
		       .setPositiveButton("OK", new DialogInterface.OnClickListener() {
		           public void onClick(DialogInterface dialog, int id) {
		                dialog.dismiss();
		           }
		       })
		       .show();
		
	}

	public void loadDatabase()
	{
		dialog = ProgressDialog.show(this, "", "Loading. Please wait...", true);
		Thread t = new Thread(reloadDB);
		t.start();
	}

	
    private Handler dbUpdateHandler = new Handler() {

        @Override
        public void handleMessage(Message msg) {
        	dialog.dismiss();
            if (msg.what == 0) { //success
            	Date d = new Date();
            	
            	SharedPreferences settings = getSharedPreferences(PREFS, 0);

            	SharedPreferences.Editor ed = settings.edit();            	
            	ed.putString(PREF_LAST_DB_UPDATE, d.toLocaleString());
            	ed.commit();
            } else {
            	showMessage("Download failed");
            	
            }
       }
    };

    Runnable reloadDB = new Runnable() {
		public void run() {
			try
			{
				peopleDB.loadData();
		        dbUpdateHandler.sendEmptyMessage(0);
			} catch (Exception e) {
				dbUpdateHandler.sendEmptyMessage(1);
			}		
		}
    };
}