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.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 SignUpActivity 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 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;
// Buttons
private Button sign_up_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signup);
// 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);
sign_up_btn = (Button) findViewById(R.id.sign_up_button);
sp = this.getSharedPreferences("userInfo", MODE_PRIVATE);
// 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) {
attemptSignUp();
return true;
}
return false;
}
});
// Set clicklistener for sign in btn.
sign_up_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
attemptSignUp();
}
});
}
/**
* 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 attemptSignUp() {
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 (!validateNetID(mNetID)) {
mNetIDView.setError("Please use your real NetID");
// FIXME hard coding.
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("Signing up...");
showProgress(true);
mAuthTask = new UserLoginTask();
mAuthTask.execute((Void) null);
}
}
private boolean validateNetID(String netID) {
ValidateNetIDTask validator = new ValidateNetIDTask();
try {
return validator.execute().get().booleanValue();
} catch (Exception e) {
return false;
}
}
public class ValidateNetIDTask extends AsyncTask<Void, Void, Boolean> {
@Override
protected Boolean doInBackground(Void... params) {
Map<String, String> parameters = new HashMap<String, String>();
parameters.put("netid", mNetID);
parameters.put("operation", "lookup");
DatabaseReader lookup = new DatabaseReader(SIGNUP_PHP);
try {
JSONObject lookupStatusJson = new JSONObject(lookup.performRead(parameters));
String lookupStatus = lookupStatusJson.getString("Status");
return lookupStatus.equals("VALID");
} catch (JSONException e) {
return false;
}
}
}
/**
* 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 signUp = new DatabaseReader(SIGNUP_PHP);
String signUpInfo = new String(signUp.performRead(parameters));
try {
JSONObject signUpInfoJson = new JSONObject(signUpInfo);
String signUpStatus = signUpInfoJson.getString("Status");
String firstName = signUpInfoJson.getString("FirstName");
if (signUpStatus.equals("SUCCESS")) {
// 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 false;
} catch (JSONException e) {
return false;
}
}
@Override
protected void onPostExecute(final Boolean success) {
mAuthTask = null;
showProgress(false);
if (success) {
startActivity(new Intent(SignUpActivity.this, MainActivity.class));
// Should better use intent. (use putExtra() to share login
// status)
sp.edit().putString("NetID", mNetID).commit();
finish(); // What to do if login successfully
} else {
mNetIDView.setError("You have already signed up.");
mNetIDView.requestFocus();
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
}