MainActivity.java

package bus.ticketer.passenger;

import java.util.ArrayList;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.text.InputFilter;
import android.text.method.ScrollingMovementMethod;
import android.view.Menu;
import android.view.View;
import android.view.View.*;
import android.widget.*;

import bus.ticketer.adapters.DialogAdapter;
import bus.ticketer.adapters.SpinnerAdapter;
import bus.ticketer.connection.ConnectionThread;
import bus.ticketer.filters.MonthInputFilter;
import bus.ticketer.utils.*;

public class MainActivity extends Activity {

	private String password = "";
	private String toFile = "";
	private String IPAddress = "";
	private FileHandler fHandler;
	private RESTFunction currentFunction;
	ProgressDialog progDialog;

	@SuppressLint("HandlerLeak")
	private Handler threadConnectionHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch(currentFunction) {
				case CREATE_CLIENT:
					handleCreation(msg);
					break;
				case LOGIN_CLIENT:
					handleLogin(msg);
					break;
				default:
					break;
			}
		}
	};
	
    @SuppressLint("InlinedApi")
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setTheme(android.R.style.Theme_Holo_NoActionBar);
        
        if(!((BusTicketer) MainActivity.this.getApplication()).isNetworkAvailable() && !isRegistered())
        	((BusTicketer) MainActivity.this.getApplication()).networkPrompt();
        else {
        	fHandler = new FileHandler(((BusTicketer) MainActivity.this.getApplication()).getClientFilename(), toFile);
			progDialog = ProgressDialog.show(
					MainActivity.this, "",
					"Loading, please wait!", true);
	        
			IPAddress = ((BusTicketer) MainActivity.this.getApplication()).getIPAddress();
			
	        handleInitialization();
	        setContentView(R.layout.activity_main);
	        
	        TextView text = (TextView) findViewById(R.id.terms_textbox);
	        text.setMovementMethod(new ScrollingMovementMethod());
	        
	        String resource = "cc_type_spinner_vals";
	        int id = getResources().getIdentifier(resource, "array", "bus.ticketer.passenger");
	        String[] cardTypes = getResources().getStringArray(id);
	        
	        int[] images = { R.drawable.ico_home_visa, R.drawable.ico_home_visa_electron, R.drawable.ico_home_master_card, R.drawable.ico_home_maestro,
	        					R.drawable.ico_home_american_express, R.drawable.ico_home_multibanco};
	        
	        final Spinner spinner = (Spinner) findViewById(R.id.cc_type_spinner);
	        spinner.setAdapter(new SpinnerAdapter(MainActivity.this, R.layout.spinner_cc_choice_box, cardTypes, images));
	        
	        EditText et = (EditText) findViewById(R.id.splash_validity_month);
	        et.setFilters(new InputFilter[]{ new MonthInputFilter(1, 12)});
	        
	        Button registerButton = (Button) findViewById(R.id.splash_register_button);
	        registerButton.setOnClickListener(new OnClickListener() {
				
				@Override
					public void onClick(View v) {
						registerAction(spinner);
					}
			});
        }
    }
    
    private boolean isRegistered() {
    	return FileHandler.checkFileExistance(((BusTicketer) MainActivity.this.getApplication()).getClientFilename());
    }
    
    private void registerAction(Spinner cardSpinner) {
    	EditText nameBox = (EditText) findViewById(R.id.splash_namebox);
    	EditText passBox = (EditText) findViewById(R.id.splash_passbox);
    	EditText cardBox = (EditText) findViewById(R.id.splash_cardbox);
    	EditText validityMonthBox = (EditText) findViewById(R.id.splash_validity_month);
    	EditText validityYearBox = (EditText) findViewById(R.id.splash_validity_year);
    	
    	
    	String name = nameBox.getText().toString();
    	password = passBox.getText().toString();
    	String cardNumber = cardBox.getText().toString();
    	String validity = validityMonthBox.getText().toString() + "/" + validityYearBox.getText().toString();
    	String cardType = cardSpinner.getSelectedItem().toString();
    	
		ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
		params.add(new BasicNameValuePair("name", name));
		params.add(new BasicNameValuePair("nib", cardNumber));
		params.add(new BasicNameValuePair("pass", password));
		params.add(new BasicNameValuePair("cardType", cardType));
		params.add(new BasicNameValuePair("validity", validity));

		currentFunction = RESTFunction.CREATE_CLIENT;
		ConnectionThread dataThread = new ConnectionThread(IPAddress+"client/create/", Method.POST,params, threadConnectionHandler, progDialog, currentFunction, null, this);
		dataThread.start();
    }
    
    public void handleInitialization() {
        ArrayList<String> fileContents = fHandler.readFromFile();
                
        if(fileContents.size() != 0) {
        	
    		ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
    		params.add(new BasicNameValuePair("name", fileContents.get(0)));
    		params.add(new BasicNameValuePair("pass", fileContents.get(1)));
    		
    		if(!((BusTicketer) MainActivity.this.getApplication()).isNetworkAvailable()) {
    	        Intent intent = new Intent(MainActivity.this, CentralActivity.class);
    	        startActivity(intent);
				intent.putExtra("Waiting", false);
		        finish(); 		
    		}
    		else {
	    		currentFunction = RESTFunction.LOGIN_CLIENT;
	        	ConnectionThread dataThread = new ConnectionThread(IPAddress+"client/login/", Method.POST, params, threadConnectionHandler, progDialog, currentFunction, null, this);
	    		dataThread.start();
    		}
        }
        else
        	progDialog.dismiss();
    }

	private void handleCreation(Message msg) {
		JSONObject received = (JSONObject) msg.obj;
		
		try {
			toFile += received.getString("name") + '\n';
			toFile += password + '\n';
			toFile += received.getString("id");
		} catch (JSONException e) {
			DialogAdapter.dialogYesNoShowing("Registration Error", "An unexpected error has ocurred upon registering. Register again?", MainActivity.this, fHandler);	
		}
		
		fHandler.setToWrite(toFile);
		fHandler.writeToFile();
		
		DialogAdapter.registrationSuccess(MainActivity.this);
	}
    
	private void handleLogin(Message msg) {
		JSONObject received = (JSONObject) msg.obj;	
		
		if(received == null) 
			DialogAdapter.connectionIssues(MainActivity.this);
		else {	
			try {
				received.getString("error");
				DialogAdapter.dialogYesNoShowing("Incorrect Login!", "Your login info does not exist in the server. Register again?", MainActivity.this, fHandler);			
			}
			catch(JSONException jsonExp) {
		        Intent intent = new Intent(MainActivity.this, CentralActivity.class);
		        startActivity(intent);
				intent.putExtra("Waiting", false);
		        finish();
			}
		}
	}

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}