package edu.gatech.oad.rocket.findmythings;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import edu.gatech.oad.rocket.findmythings.model.AppMember;
import edu.gatech.oad.rocket.findmythings.model.MessageBean;
import edu.gatech.oad.rocket.findmythings.control.LoginManager;
import edu.gatech.oad.rocket.findmythings.service.EndpointUtils;
import edu.gatech.oad.rocket.findmythings.util.Messages;
import edu.gatech.oad.rocket.findmythings.util.validation.EmailValidator;
import edu.gatech.oad.rocket.findmythings.util.EnumHelper;
import edu.gatech.oad.rocket.findmythings.util.ToastHelper;
import java.io.IOException;
/**
* CS 2340 - FindMyStuff Android App
* Activity which displays a login screen to the user, offering registration as well.
*
* @author TeamRocket
* */
public class LoginActivity extends Activity {
public static final int LOGIN_REQUEST = 42;
/**
* The default email to populate the email field with.
*/
public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";
/**
* Keep track of the login task to ensure we can cancel it if requested.
*/
private UserLoginTask mAuthTask = null;
// UI references.
private EditText mEmailView;
private EditText mPasswordView;
private View mLoginFormView;
private View mLoginStatusView;
private TextView mLoginStatusMessageView;
/**
* creates window with correct layout
* @param savedInstanceState
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_window);
getActionBar().setDisplayHomeAsUpEnabled(true);
mEmailView = (EditText) findViewById(R.id.email);
mPasswordView = (EditText) findViewById(R.id.password);
mPasswordView
.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id,
KeyEvent keyEvent) {
if (id == R.id.login || id == EditorInfo.IME_NULL) {
attemptToLogin(textView);
return true;
}
return false;
}
});
mLoginFormView = findViewById(R.id.login_form);
mLoginStatusView = findViewById(R.id.login_status);
mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);
}
@Override
protected void onResume() {
super.onResume();
// Set up the login form.
String extraEmail = getIntent().getStringExtra(EXTRA_EMAIL);
if (extraEmail == null) extraEmail = "";
mEmailView.setText(extraEmail);
}
/**
* takes care of action when key is pressed down
* @param keyCode key that is pressed
* @param event - event that is to happen when the key is pressed
* @return boolean
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
//Tells Activity what to do when back key is pressed
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
setResult(RESULT_CANCELED);
super.onBackPressed();
return true;
}
return super.onKeyDown(keyCode, event);
}
/**
* creates the menu with all the options
* @param menu
* @return boolean true when done
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.activity_login_window, menu);
return true;
}
/**
* Handles menu actions
*/
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
setResult(RESULT_CANCELED);
finish();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/**
* Goes to register screen
*/
public void goToRegister(View registerButton) {
Intent goToNextActivity = new Intent(this, RegisterActivity.class);
String email = mEmailView.getText().toString();
goToNextActivity.putExtra("email", email); // Passes email to RegisterActivity
startActivity(goToNextActivity);
overridePendingTransition(R.anim.slide_in_left, R.anim.slide_out_left);
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid email, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
public void attemptToLogin(View loginButton) {
if (mAuthTask != null) {
return;
}
// Reset errors.
mEmailView.setError(null);
mPasswordView.setError(null);
// Store values at the time of the login attempt.
String email = mEmailView.getText().toString();
String password = mPasswordView.getText().toString();
boolean continues = true;
View focusView = null;
//Check for a valid password.
if (TextUtils.isEmpty(password)) {
mPasswordView.setError(getString(R.string.error_field_required));
focusView = mPasswordView;
continues = false;
} else if (email.length() < 4) {
mPasswordView.setError(getString(R.string.error_invalid_password));
focusView = mPasswordView;
continues = false;
}
// Check for a valid email address.
if (TextUtils.isEmpty(email)) {
mEmailView.setError(getString(R.string.error_field_required));
focusView = mEmailView;
continues = false;
} else if (!EmailValidator.getInstance().isValid(email)) {
mEmailView.setError(getString(R.string.error_invalid_email));
focusView = mEmailView;
continues = false;
}
if (continues) {
// Show a progress spinner, and kick off a background task to
// perform the user login attempt.
mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
showProgress(true);
// Checks for valid user name
mAuthTask = new UserLoginTask();
mAuthTask.execute(email, password);
} else {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
}
}
/**
* Shows the progress UI and hides the login form.
*/
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
private void showProgress(final boolean show) {
// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
// for very easy animations. If available, use these APIs to fade-in
// the progress spinner.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
int shortAnimTime = getResources().getInteger(
android.R.integer.config_shortAnimTime);
mLoginStatusView.setVisibility(View.VISIBLE);
mLoginStatusView.animate().setDuration(shortAnimTime)
.alpha(show ? 1 : 0)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mLoginStatusView.setVisibility(show ? View.VISIBLE
: View.GONE);
}
});
mLoginFormView.setVisibility(View.VISIBLE);
mLoginFormView.animate().setDuration(shortAnimTime)
.alpha(show ? 0 : 1)
.setListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mLoginFormView.setVisibility(show ? View.GONE
: View.VISIBLE);
}
});
} else {
// The ViewPropertyAnimator APIs are not available, so simply show
// and hide the relevant UI components.
mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
}
}
/**
* Represents an asynchronous login/registration task used to authenticate
* the user.
*/
public class UserLoginTask extends AsyncTask<String, Void, MessageBean> {
@Override
protected MessageBean doInBackground(String... params) {
try {
return EndpointUtils.getEndpoint().account().login(params[0], params[1]).execute();
} catch (IOException e) {
Log.e("LoginActivity", "couldn't log in", e);
return null;
}
}
/**
* deals with action when user either log is sucessfully or not
* @param output - response from the login API method
*/
@Override
protected void onPostExecute(final MessageBean output) {
mAuthTask = null;
String token = null, email = null, failureMessage = null;
if (output != null) {
token = output.getToken();
email = output.getEmail();
failureMessage = output.getFailureReason();
}
Messages.Login failureType = EnumHelper.forTextString(Messages.Login.class, failureMessage);
if (token != null && email != null) {
LoginManager.getLoginManager().setCurrentEmailAndToken(email, token);
new AsyncTask<Void, Void, AppMember>(){
@Override
protected AppMember doInBackground(Void... arg0) {
try {
return EndpointUtils.getEndpoint().account().get().execute();
} catch (IOException e) {
return null;
}
}
@Override
protected void onPostExecute(final AppMember output) {
showProgress(false);
LoginManager.getLoginManager().setCurrentUser(output);
setResult(RESULT_OK);
finish();
}
}.execute();
return;
} else if (failureType != null) {
switch (failureType) {
case NO_SUCH_USER:
mEmailView.setError(getString(R.string.error_no_such_user));
mEmailView.requestFocus();
break;
case BAD_PASSWORD:
mPasswordView.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
break;
case ACCOUNT_LOCKED:
case ACCT_DISABLE:
mEmailView.setError(getString(R.string.error_account_locked));
mEmailView.requestFocus();
break;
case MANY_ATTEMPT:
mEmailView.setError(getString(R.string.error_many_attempts));
mEmailView.requestFocus();
break;
case INVALID_DATA:
ToastHelper.showError(LoginActivity.this, getString(R.string.error_invalid_data));
break;
}
} else {
ToastHelper.showError(LoginActivity.this, getString(R.string.error_no_response));
}
showProgress(false);
}
/**
* deals with action when task cancelled
*/
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
/**
* Called to pop the login window from the navigation stack
*/
@Override
public void finish() {
super.finish();
overridePendingTransition(R.anim.hold, R.anim.slide_down_modal);
}
}