// --- BEGIN COPYRIGHT BLOCK ---
// 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; version 2 of the License.
//
// 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.admin.certsrv.config;

import java.awt.Color;
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.Hashtable;
import java.util.Vector;

import javax.swing.DefaultCellEditor;
import javax.swing.JLabel;
import javax.swing.JPasswordField;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.ScrollPaneConstants;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.text.JTextComponent;

import com.netscape.admin.certsrv.CMSAdminUtil;
import com.netscape.admin.certsrv.CMSTableModel;
import com.netscape.admin.certsrv.EAdminException;
import com.netscape.admin.certsrv.PasswordCellRenderer;
import com.netscape.admin.certsrv.wizard.IWizardPanel;
import com.netscape.admin.certsrv.wizard.WizardBasePanel;
import com.netscape.admin.certsrv.wizard.WizardInfo;
import com.netscape.certsrv.common.Constants;
import com.netscape.management.client.util.Debug;

/**
 * New Agent names/passwords for reconfiguring the Recovery MN Scheme
 *
 * @author Jack Pan-Chen
 * @version $Revision$, $Date$
 * @see com.netscape.admin.certsrv.config
 */
class WMNNewAgent extends WizardBasePanel
    implements IWizardPanel
{

    /*==========================================================
     * variables
     *==========================================================*/
    private static final String PANELNAME = "WMNNEWAGENT";

    private int mNoAgent = 0;
    private MNSchemeWizardInfo mInfo;
    private NewAgentModel mDataModel;
    private JTable mTable;
    protected JScrollPane mScrollPane;
    private static final String HELPINDEX =
      "configuration-kra-wizard-newagentpwd-keyscheme-help";

    /*==========================================================
     * constructors
     *==========================================================*/
    WMNNewAgent() {
        super(PANELNAME);
        init();
    }

    @Override
    public boolean isLastPage() {
        return false;
    }

    /*==========================================================
     * public methods
     *==========================================================*/
    @Override
    public boolean initializePanel(WizardInfo info) {
        //let's set the values
        mInfo = (MNSchemeWizardInfo)info;
        Debug.println(mInfo.toString());
        try {
            mNoAgent = Integer.parseInt(mInfo.getNewN());
        } catch (Exception e) {
            return false;
        }

        //add rows into tables
        //zap passwords
        mDataModel.removeAllRows();

        Vector<Object>[] data = new Vector[mNoAgent];
        for (int i=0; i<data.length; i++) {
            data[i] = new Vector<>();
            data[i].addElement(Integer.toString(i+1));
            data[i].addElement("");
            data[i].addElement("");
            data[i].addElement("");
            mDataModel.addRow(data[i]);
        }
        return true;
    }

    @Override
    public boolean validatePanel() {

        Component component = mTable.getEditorComponent();
        if(component!= null) {
            int col = mTable.getEditingColumn();
            int row = mTable.getEditingRow();
            if ((col>-1)&&(row>-1)) {
                String str = ((JTextComponent)component).getText();
                mTable.setValueAt(str, row, col);
            }
        }

        if(!checkBlank()) {
            setErrorMessage("CANNOTBEBLANK");
            return false;
        }

        if(!checkConfirm()) {
            setErrorMessage("PASSWORDERROR");
            return false;
        }

        if (!checkDuplicate()) {
            setErrorMessage("DUPLICATEERROR");
            return false;
        }

        return true;
    }

    @Override
    public boolean concludePanel(WizardInfo info) {
        Debug.println("WMNNewAgent -- concludePanel() - START");
        String val = getUIDPassword();
        mInfo.add(Constants.PR_RECOVERY_AGENT,val);
        try {
            mInfo.changeScheme();
        } catch (EAdminException e) {
            mErrorString = e.toString();
            return false;
        }
        return true;
    }

    @Override
    public void getUpdateInfo(WizardInfo info) {
    }

    @Override
    public void callHelp() {
        CMSAdminUtil.help(HELPINDEX);
    }

    //base class take care of these
    //public String getTitle();
    //public String getErrorMessage();

    /*==========================================================
     * protected methods
     *==========================================================*/

    //Set the first column's cellrender as label cell
    protected void setLabelCellRenderer(JTable table, int index) {
        table.getColumnModel().getColumn(index).setCellRenderer(
          new DefaultTableCellRenderer());
    }

    //Set the first column's cellrender as label cell
    protected void setLabelCellEditor(JTable table, int index) {
        table.getColumnModel().getColumn(index).setCellRenderer(
          new PasswordCellRenderer());
        table.getColumnModel().getColumn(index).setCellEditor(
          new DefaultCellEditor(new JPasswordField()));
    }

    /*==========================================================
     * private methods
     *==========================================================*/

    //initialize the panel
    @Override
    protected void init() {
        GridBagLayout gb = new GridBagLayout();
        GridBagConstraints gbc = new GridBagConstraints();
        setLayout(gb);

        CMSAdminUtil.resetGBC(gbc);
        JLabel label3 = makeJLabel("DESC");
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        gbc.weightx = 1.0;
        add(label3,gbc);

        //table
        mDataModel = new NewAgentModel();
        mTable = new JTable(mDataModel);
        mScrollPane = new JScrollPane(mTable);
        //mScrollPane.setBorder(CMSAdminUtil.makeTitledBorder(mResource,PANEL_NAME,"USERS"));
        mScrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
        mScrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
        mTable.setAutoscrolls(true);
        mTable.doLayout();
        mTable.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_INTERVAL_SELECTION);
        //mTable.getSelectionModel().addListSelectionListener(this);
        mScrollPane.setBackground(Color.white);
        setLabelCellRenderer(mTable, 1);
        setLabelCellEditor(mTable, 2);
        setLabelCellEditor(mTable, 3);

        CMSAdminUtil.resetGBC(gbc);
        gbc.anchor = GridBagConstraints.NORTH;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        //gbc.gridheight = gbc.REMAINDER;
        gbc.weightx = 1.0;
        gbc.weighty = 1.0;
        gbc.fill = GridBagConstraints.BOTH;
        gbc.insets = new Insets(COMPONENT_SPACE, COMPONENT_SPACE,COMPONENT_SPACE,COMPONENT_SPACE);
        gb.setConstraints(mScrollPane, gbc);
        add(mScrollPane);

        super.init();
    }

    private boolean checkDuplicate() {
        Hashtable<String, String> table = new Hashtable<>();
        for (int i=0; i<mDataModel.getRowCount(); i++) {
            String val1 = (String)mDataModel.getValueAt(i,1);
            table.put(val1.trim(), "1");
        }
        if (table.size() != mDataModel.getRowCount()) {
            table = null;
            return false;
        }

        table = null;
        return true;
    }

    private boolean checkBlank() {
        for (int i=0; i<mDataModel.getRowCount(); i++) {
            String val1 = (String)mDataModel.getValueAt(i,1);
            String val2 = (String)mDataModel.getValueAt(i,2);
            String val3 = (String)mDataModel.getValueAt(i,3);
            if ( (val1.trim().equals(""))||(val2.trim().equals(""))||
                 (val3.trim().equals(""))) {
                return false;
            }
        }
        return true;
    }

    private boolean checkConfirm() {
        for (int i=0; i<mDataModel.getRowCount(); i++) {
            String val2 = (String)mDataModel.getValueAt(i,2);
            String val3 = (String)mDataModel.getValueAt(i,3);
            if (!val2.trim().equals(val3.trim())) {
                return false;
            }
        }
        return true;
    }

    private String getUIDPassword() {
        String result = "";
        for (int i=0; i<mDataModel.getRowCount(); i++) {
            String val1 = (String)mDataModel.getValueAt(i,1);
            String val2 = (String)mDataModel.getValueAt(i,2);
            result = result+val1.trim()+"="+val2.trim();
            if (i < (mDataModel.getRowCount()-1))
                result = result+",";
        }
        return result;
    }

}

class NewAgentModel extends CMSTableModel
{
    /*==========================================================
     * variables
     *==========================================================*/
    public static final String COL1 = "NUMBER";
    public static final String COL2 = "UID";
    public static final String COL3 = "PASSWORD";
    public static final String COL4 = "CONFIRM";


    private static String[] mColumns = {COL1, COL2, COL3, COL4};

    /*==========================================================
     * constructors
     *==========================================================*/
    public NewAgentModel() {
        super();
        init(mColumns);
    }

    @Override
    public boolean isCellEditable(int row, int col) {
        if(col >= 1)
            return true;
        return false;
    }
}

