/* ownCloud Android client application
 *   Copyright (C) 2011  Bartek Przybylski
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package eu.alefzero.owncloud.authenticator;

import java.net.MalformedURLException;
import java.net.URL;

import android.accounts.Account;
import android.accounts.AccountAuthenticatorActivity;
import android.accounts.AccountManager;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.TextView;
import android.widget.Toast;
import eu.alefzero.owncloud.R;
import eu.alefzero.owncloud.db.ProviderMeta.ProviderTableMeta;

public class AuthenticatorActivity extends AccountAuthenticatorActivity {
  private Thread mAuthThread;
  private final Handler mHandler = new Handler();
  
  public static final String PARAM_USERNAME = "param_Username";
  public static final String PARAM_HOSTNAME = "param_Hostname";
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.account_setup);
    if (getIntent().hasExtra(PARAM_USERNAME)) {
      String username =  getIntent().getStringExtra(PARAM_HOSTNAME);
      TextView host_text, user_text;
      host_text = (TextView) findViewById(R.id.host_URL);
      user_text = (TextView) findViewById(R.id.account_username);
      host_text.setText(host_text.getText() + username.substring(username.lastIndexOf('@')));
      user_text.setText(user_text.getText() + username.substring(0, username.lastIndexOf('@')-1));
    }
  }

  @Override
  protected Dialog onCreateDialog(int id) {
    final ProgressDialog dialog = new ProgressDialog(this);
    dialog.setMessage("Trying to login");
    dialog.setIndeterminate(true);
    dialog.setCancelable(true);
    dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
      public void onCancel(DialogInterface dialog) {
        Log.i(getClass().getName(), "Login canceled");
        if (mAuthThread != null) {
          mAuthThread.interrupt();
          finish();
        }
      }
    });
    return dialog;
  }
  
  public void onAuthenticationResult(boolean result, String message) {
    if (result) {
      TextView username_text = (TextView) findViewById(R.id.account_username),
               password_text = (TextView) findViewById(R.id.account_password);

      URL url = null;
      try {
        url = new URL(message);
      } catch (MalformedURLException e) {
        // should never happend
        Log.e(getClass().getName(), "Malformed URL: " + message);
        return;
      }
      
      Account account = new Account(username_text.getText().toString() + "@" + url.getHost(), AccountAuthenticator.ACCOUNT_TYPE);
      AccountManager accManager = AccountManager.get(this);
      accManager.addAccountExplicitly(account, password_text.getText().toString(),null);
      
      final Intent intent = new Intent();
      intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE, AccountAuthenticator.ACCOUNT_TYPE);
      intent.putExtra(AccountManager.KEY_ACCOUNT_NAME, account.name);
      intent.putExtra(AccountManager.KEY_AUTHTOKEN, AccountAuthenticator.ACCOUNT_TYPE);
      accManager.setUserData(account, AccountAuthenticator.KEY_OC_URL, url.toString());
      setAccountAuthenticatorResult(intent.getExtras());
      setResult(RESULT_OK, intent);
      Bundle bundle = new Bundle();
      bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
      getContentResolver().startSync(ProviderTableMeta.CONTENT_URI, bundle);
      
      dismissDialog(0);
      finish();
    } else {
      Toast.makeText(this, message, Toast.LENGTH_LONG).show();
      dismissDialog(0);
    }
  }
  
  public void onCancelClick(View view) {
    Log.i(getClass().getName(), "Account creating canceled");
    this.finish();
  }
  
  public void onOkClick(View view) {
    TextView url_text = (TextView) findViewById(R.id.host_URL);
    TextView username_text = (TextView) findViewById(R.id.account_username);
    TextView password_text = (TextView) findViewById(R.id.account_password);
    Log.i(getClass().getName(), "OK clicked");
    boolean hasErrors = false;
    
    URL uri = null;
    if (url_text.getText().toString().trim().length() == 0) {
      url_text.setTextColor(Color.RED);
      hasErrors = true; 
    } else {
      url_text.setTextColor(Color.BLACK);
    }
    try {
      String url_str = url_text.getText().toString();
      if (!url_str.startsWith("http://") &&
          !url_str.startsWith("https://")) {
        url_str = "http://" + url_str;
      }
      uri = new URL(url_str);
    } catch (MalformedURLException e) {
      url_text.setTextColor(Color.RED);
      e.printStackTrace();
      hasErrors = true;
    }
    
    if (username_text.getText().toString().contains(" ") ||
        username_text.getText().toString().trim().length() == 0) {
      username_text.setTextColor(Color.RED);
      hasErrors = true;
    } else {
      username_text.setTextColor(Color.BLACK);
    }
    
    if (password_text.getText().toString().trim().length() == 0) {
      password_text.setTextColor(Color.RED);
      hasErrors = true;
    } else {
      password_text.setTextColor(Color.BLACK);
    }
    if (hasErrors) {
      return;
    }
    showDialog(0);
    mAuthThread = AuthUtils.attemptAuth(uri,
                                        username_text.getText().toString(),
                                        password_text.getText().toString(),
                                        mHandler,
                                        AuthenticatorActivity.this);
  }
}