LoginActivity.java

package se.dat255.grupp12;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.util.Patterns;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Toast;
import android.view.*;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.regex.Pattern;

import retrofit.Callback;
import retrofit.RetrofitError;
import retrofit.client.Response;

/**
 * Created by Oscar on 2013-10-01.
 */
public class LoginActivity extends Activity {
    private AccountManager mAccountManager;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
        getActionBar().hide();

        setContentView(R.layout.login_view);

        ImageView logo = (ImageView) findViewById(R.id.loginLogo);
        logo.setImageResource(R.drawable.logo_large);

        FileHandler fileHandler = new FileHandler();
        try {
            fileHandler.readAddressFromFile(this);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * onClick method for logging in the user to the server
     * @param view
     */
    public void clickedLogin(View view) {

        final EditText input = new EditText(this);
        input.setText(ServerConnection.getAddress());
        final LoginActivity thisActivity = this; //Because "this not applicable in callbacks from retroFit"


        new AlertDialog.Builder(this)
                .setTitle("Server-IP")
                .setMessage("Skriv in serverns IP")
                .setView(input)
                .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        ServerConnection.setAddress(input.getText().toString());

                        Toast.makeText(getApplicationContext(), input.getText().toString() + " är nu serverns adress.", Toast.LENGTH_SHORT).show();

                        mAccountManager = AccountManager.get(LoginActivity.this);
                        final Account[] accounts = mAccountManager.getAccountsByType("com.google");

                        if (accounts.length == 0) {
                            Toast.makeText(getApplicationContext(), "No accounts found!", Toast.LENGTH_SHORT).show();
                        } else {
                            Bundle options = new Bundle();


                            mAccountManager.getAuthToken(
                                    accounts[0],
                                    "oauth2:https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/userinfo.email",
                                    options,
                                    thisActivity,
                                    new AccountManagerCallback<Bundle>() {
                                        @Override
                                        public void run(AccountManagerFuture<Bundle> result) {

                                            Bundle bundle = null;
                                            try {
                                                bundle = result.getResult();

                                                final String mail = bundle.getString(AccountManager.KEY_ACCOUNT_NAME);
                                                String token = bundle.getString(AccountManager.KEY_AUTHTOKEN);
                                                Intent launch = (Intent) result.getResult().get(AccountManager.KEY_INTENT);

                                                if (launch != null) {
                                                    startActivityForResult(launch, 0);
                                                    return;
                                                }

                                                Toast.makeText(getApplicationContext(), "Ansluter...", Toast.LENGTH_SHORT).show();

                                                //ServerConnection.setAddress("192.168.0.196");
                                                ServerConnection.server().authenticateUserAsync(mail,token,new Callback<String>() {
                                                    @Override
                                                    public void success(String s, Response response) {
                                                        Toast.makeText(getApplicationContext(), "Success!", Toast.LENGTH_SHORT).show();
                                                        User.setUserEmails(Arrays.asList(mail));
                                                        Intent loginUser;
                                                        loginUser = new Intent(thisActivity, MainActivity.class);
                                                        startActivity(loginUser);
														ServerConnection.setConnectedToServer(true);
                                                    }

                                                    @Override
                                                    public void failure(RetrofitError retrofitError) {
                                                        retrofitError.printStackTrace();
                                                        Toast.makeText(getApplicationContext(), retrofitError.getMessage(), Toast.LENGTH_SHORT).show();

														ServerConnection.setConnectedToServer(false);

                                                    }
                                                });

                                            } catch (Exception e) {
                                                e.printStackTrace();
                                                Toast.makeText(getApplicationContext(), "Exception e", Toast.LENGTH_SHORT).show();

                                            }

                                        }
                                    },
                                    null
                            );
                        }
                    }
                }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {
                // Do nothing.
            }
        }).show();
    }


    /**
     * onClick method for skipping the auth/login and go directly into app in offline mode
     * @param view
     */
    public void clickedSkip(View view){
        ArrayList<String> emails = new ArrayList<String>();
        Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
        Account[] accounts = AccountManager.get(this.getApplicationContext()).getAccounts();
        for (Account account : accounts) {
            if (emailPattern.matcher(account.name).matches()) {
                emails.add(account.name);
            }
        }

        ServerConnection.setConnectedToServer(false);

        User.setUserEmails(emails);

        //Creates an intent for switching to MainActivity
        Intent loginUser;
        loginUser = new Intent(this, MainActivity.class);
        startActivity(loginUser);


    }

    @Override
    public void onBackPressed() {
        new AlertDialog.Builder(this)
                .setTitle("Confirm Exit")
                .setMessage("Do you really want to exit?")
                .setPositiveButton("Yes", new DialogInterface.OnClickListener()
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        finish();
                    }
                })
                .setNegativeButton("No", null)
                .show();

    }
}