// Copyright (C) 2008 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.google.gerrit.client.account;

import static com.google.gerrit.client.FormatUtil.mediumFormat;

import com.google.gerrit.client.Gerrit;
import com.google.gerrit.client.Link;
import com.google.gerrit.client.reviewdb.Account;
import com.google.gerrit.client.rpc.Common;
import com.google.gerrit.client.rpc.GerritCallback;
import com.google.gerrit.client.ui.AccountScreen;
import com.google.gerrit.client.ui.LazyTabChild;
import com.google.gerrit.client.ui.Screen;
import com.google.gwt.i18n.client.LocaleInfo;
import com.google.gwt.user.client.ui.Grid;
import com.google.gwt.user.client.ui.SourcesTabEvents;
import com.google.gwt.user.client.ui.TabListener;
import com.google.gwt.user.client.ui.TabPanel;
import com.google.gwt.user.client.ui.HTMLTable.CellFormatter;

import java.util.ArrayList;
import java.util.List;

public class AccountSettings extends AccountScreen {
  private String initialTabToken;
  private int labelIdx, fieldIdx;
  private Grid info;

  private List<String> tabTokens;
  private TabPanel tabs;
  private PreferencePanel prefsPanel;

  public AccountSettings(final String tabToken) {
    super(Util.C.accountSettingsHeading());
    initialTabToken = tabToken;
  }

  @Override
  public Object getScreenCacheToken() {
    return getClass();
  }

  @Override
  public Screen recycleThis(final Screen newScreen) {
    final AccountSettings s = (AccountSettings) newScreen;
    initialTabToken = s.initialTabToken;
    return this;
  }

  @Override
  public void onLoad() {
    if (info == null) {
      initUI();
    }

    super.onLoad();
    display(Gerrit.getUserAccount());
    tabs.selectTab(tabTokens.indexOf(initialTabToken));

    Util.ACCOUNT_SVC.myAccount(new GerritCallback<Account>() {
      public void onSuccess(final Account result) {
        if (isAttached()) {
          display(result);
        }
      }
    });
  }

  private void initUI() {
    if (LocaleInfo.getCurrentLocale().isRTL()) {
      labelIdx = 1;
      fieldIdx = 0;
    } else {
      labelIdx = 0;
      fieldIdx = 1;
    }

    info = new Grid(5, 2);
    info.setStyleName("gerrit-InfoBlock");
    info.addStyleName("gerrit-AccountInfoBlock");
    add(info);

    infoRow(0, Util.C.fullName());
    infoRow(1, Util.C.preferredEmail());
    infoRow(2, Util.C.sshUserName());
    infoRow(3, Util.C.registeredOn());
    infoRow(4, Util.C.accountId());

    final CellFormatter fmt = info.getCellFormatter();
    fmt.addStyleName(0, 0, "topmost");
    fmt.addStyleName(0, 1, "topmost");
    fmt.addStyleName(4, 0, "bottomheader");

    prefsPanel = new PreferencePanel();

    tabTokens = new ArrayList<String>();
    tabs = new TabPanel();
    tabs.setWidth("98%");
    add(tabs);

    tabs.add(prefsPanel, Util.C.tabPreferences());
    tabTokens.add(Link.SETTINGS);

    tabs.add(new LazyTabChild<ContactPanel>() {
      @Override
      protected ContactPanel create() {
        return new ContactPanel(AccountSettings.this);
      }
    }, Util.C.tabContactInformation());
    tabTokens.add(Link.SETTINGS_CONTACT);

    tabs.add(new LazyTabChild<SshKeyPanel>() {
      @Override
      protected SshKeyPanel create() {
        return new SshKeyPanel();
      }
    }, Util.C.tabSshKeys());
    tabTokens.add(Link.SETTINGS_SSHKEYS);

    tabs.add(new LazyTabChild<ExternalIdPanel>() {
      @Override
      protected ExternalIdPanel create() {
        return new ExternalIdPanel();
      }
    }, Util.C.tabWebIdentities());
    tabTokens.add(Link.SETTINGS_WEBIDENT);

    if (Common.getGerritConfig().isUseContributorAgreements()) {
      tabs.add(new LazyTabChild<AgreementPanel>() {
        @Override
        protected AgreementPanel create() {
          return new AgreementPanel();
        }
      }, Util.C.tabAgreements());
      tabTokens.add(Link.SETTINGS_AGREEMENTS);
    }

    tabs.addTabListener(new TabListener() {
      public boolean onBeforeTabSelected(SourcesTabEvents sender, int tabIndex) {
        return true;
      }

      public void onTabSelected(SourcesTabEvents sender, int tabIndex) {
        Gerrit.display(tabTokens.get(tabIndex), false);
      }
    });
  }

  private void infoRow(final int row, final String name) {
    info.setText(row, labelIdx, name);
    info.getCellFormatter().addStyleName(row, 0, "header");
  }

  void display(final Account account) {
    info.setText(0, fieldIdx, account.getFullName());
    info.setText(1, fieldIdx, account.getPreferredEmail());
    info.setText(2, fieldIdx, account.getSshUserName());
    info.setText(3, fieldIdx, mediumFormat(account.getRegisteredOn()));
    info.setText(4, fieldIdx, account.getId().toString());
    prefsPanel.display(account);
  }
}