package com.werds.ishowup.ui;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
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.View;
import android.view.Window;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.TextView;
import com.werds.ishowup.R;
import com.werds.ishowup.dbcommunication.DatabaseReader;
/**
* Activity which displays a login screen to the user, offering registration as
* well.
*/
public class LoginActivity extends Activity {
/**
* Keep track of the login task to ensure we can cancel it if requested.
*/
private UserLoginTask mAuthTask = null;
/* Login php of the database server */
private static final String DATABASE_LOGIN_PHP = "http://web.engr.illinois.edu/~ishowup4cs411/cgi-bin/login.php";
private static final String SIGNUP_PHP = "http://web.engr.illinois.edu/~ishowup4cs411/cgi-bin/register.php";
private String mNetID;
private String mPassword;
// UI references.
private EditText mNetIDView;
private EditText mPasswordView;
private View mLoginFormView;
private View mLoginStatusView;
private TextView mLoginStatusMessageView;
// For saved account data.
private SharedPreferences sp;
private CheckBox auto_login;
// Buttons
private Button sign_up_btn;
private Button sign_in_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_login);
// Get instances.
mNetIDView = (EditText) findViewById(R.id.netid);
mPasswordView = (EditText) findViewById(R.id.password);
mLoginFormView = findViewById(R.id.login_form);
mLoginStatusView = findViewById(R.id.login_status);
mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);
auto_login = (CheckBox) findViewById(R.id.cb_auto);
sign_up_btn = (Button) findViewById(R.id.sign_up_button);
sign_in_btn = (Button) findViewById(R.id.sign_in_button);
sp = this.getSharedPreferences("userInfo", MODE_PRIVATE);
// Auto sign in ON by default.
/*
* auto_login.setChecked(true); sp.edit().putBoolean("AUTO_CHECKED",
* false).commit();
*/
// If last time login successfully, the VERIFIED field should be true,
// Then you are free to auto login. YAY!
if (sp.getBoolean("VERIFIED", false)
&& sp.getBoolean("AUTO_CHECKED", false)) {
// Default to be auto login.
auto_login.setChecked(true);
Intent main_intent = new Intent(LoginActivity.this,
MainActivity.class);
LoginActivity.this.startActivity(main_intent);
}
// Set up the login form.
mNetIDView.setText(mNetID);
mPasswordView
.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id,
KeyEvent keyEvent) {
if (id == R.id.login || id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
}
});
// Set clicklistener for sign in btn.
sign_in_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
attemptLogin();
}
});
// Set clicklistener for sign up btn.
/*
* final Intent signup_intent = new Intent();
* signup_intent.setAction("android.intent.action.VIEW"); Uri
* content_url = Uri
* .parse("http://web.engr.illinois.edu/~ishowup4cs411/register.php");
* signup_intent.setData(content_url);
*
* sign_up_btn.setOnClickListener( new Button.OnClickListener() { public
* void onClick(View v) { startActivity(signup_intent); } });
*/
sign_up_btn.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(LoginActivity.this, SignUpActivity.class));
}
});
// Set Checkbox listener
auto_login.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (auto_login.isChecked()) {
sp.edit().putBoolean("AUTO_CHECKED", true).commit();
} else {
sp.edit().putBoolean("AUTO_CHECKED", false).commit();
}
}
});
}
/**
* 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 attemptLogin() {
if (mAuthTask != null) {
return;
}
// Reset errors.
mNetIDView.setError(null);
mPasswordView.setError(null);
// Store values at the time of the login attempt.
mNetID = mNetIDView.getText().toString();
mPassword = mPasswordView.getText().toString();
boolean cancel = false;
View focusView = null;
// Check for a valid password.
if (TextUtils.isEmpty(mPassword)) {
mPasswordView.setError(getString(R.string.error_field_required));
focusView = mPasswordView;
cancel = true;
} else if (mPassword.length() < 4) {
mPasswordView.setError(getString(R.string.error_invalid_password));
focusView = mPasswordView;
cancel = true;
}
// Check for a valid NetID
if (TextUtils.isEmpty(mNetID)) {
mNetIDView.setError(getString(R.string.error_field_required));
focusView = mNetIDView;
cancel = true;
} else if (mNetID.length() > 8) {
mNetIDView.setError(getString(R.string.error_invalid_email));
focusView = mNetIDView;
cancel = true;
}
if (cancel) {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
} else {
// 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);
mAuthTask = new UserLoginTask();
mAuthTask.execute((Void) null);
}
}
/**
* 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<Void, Void, Boolean> {
/**
* This login process runs on a separate thread.
*
* @author KevinC
*/
@Override
protected Boolean doInBackground(Void... params) {
Map<String, String> parameters = new HashMap<String, String>();
parameters.put("netid", mNetID);
parameters.put("password", mPassword);
DatabaseReader login = new DatabaseReader(DATABASE_LOGIN_PHP);
String loginStatus = new String(login.performRead(parameters));
if (loginStatus.equals("Accept\n")) {
sp.edit().putString("NetID", mNetID).commit();;
Map<String, String> sectionLookupParam = new HashMap<String, String>();
sectionLookupParam.put("netid", mNetID);
sectionLookupParam.put("operation", "lookup");
DatabaseReader sectionLookUp = new DatabaseReader(SIGNUP_PHP);
String sectionLookUpInfo = new String(sectionLookUp.performRead(sectionLookupParam));
try {
JSONObject signUpInfoJson = new JSONObject(sectionLookUpInfo);
String signUpStatus = signUpInfoJson.getString("Status");
String firstName = signUpInfoJson.getString("FirstName");
if (signUpStatus.equals("VALID")) {
// Store all sections found for this student
JSONArray sections = signUpInfoJson.getJSONArray("Sections");
Set<String> allSections = new LinkedHashSet<String>();
for (int i = 0; i < sections.length(); i++) {
allSections.add(sections.getString(i).replace('_', ' '));
Log.d("allSections"+i, sections.getString(i).replace('_', ' '));
}
sp.edit().putStringSet("allSections", allSections).commit();
sp.edit().putString("FirstName", firstName).commit();
return true;
} else
return true;
} catch (JSONException e) {
return true;
}
} else return false;
}
@Override
protected void onPostExecute(final Boolean success) {
mAuthTask = null;
showProgress(false);
if (success) {
startActivity(new Intent(LoginActivity.this, MainActivity.class));
// Should better use intent. (use putExtra() to share login
// status)
sp.edit().putBoolean("VERIFIED", true).commit();
sp.edit().putString("NetID", mNetID).commit();
finish(); // What to do if login successfully
} else {
mPasswordView
.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
}