package com.onaro.sanscreen.client.view.profile;

import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.Collection;

import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

import org.apache.commons.lang3.StringUtils;

import com.onaro.client.leekui.jface.dialogs.ValidatableDialogPage;
import com.onaro.commons.swing.FixedSizeDocumentFilter;
import com.onaro.sanscreen.client.SANscreenClientPlugin;
import com.onaro.sanscreen.server.interfaces.data.viewprofile.ViewProfile;

public class SaveProfileDialogPage extends ValidatableDialogPage {
	/**
	 * In case the User has entered a profile name that already exist, then
	 * this member variable will hold the existing profile.
	 */
	private ViewProfile existingProfile;
	
	private String profileName;
	private boolean global;
	
	private Collection<ViewProfile> existingProfiles;
	
	private JPanel contentsPanel = null;  //  @jve:decl-index=0:visual-constraint="43,28"
	private JLabel nameLabel = null;
	private JTextField nameField = null;
	private JCheckBox globalCheckBox = null;
	
	public SaveProfileDialogPage(String defaultName, boolean defaultGlobal, Collection<ViewProfile> existingProfiles) {
		setTitle(Messages.INSTANCE.getSaveProfileDialogPageTitle());
		setDescription(Messages.INSTANCE.getSaveProfileDialogPageDescription());
		profileName = defaultName;
		global = defaultGlobal;
		this.existingProfiles = existingProfiles;
	}

	public boolean isGlobal() {
		return global;
	}

	/**
	 * If the User has entered the name of a profile that already exist 
	 * then this method will return TRUE otherwise FALSE.
	 */
	public boolean isOverwrite() {
		return existingProfile != null;
	}

	
	/**
	 * When the User enters the name of a profile to be saved, this name is check
	 * against the already existing profiles.  If there is a match and the User
	 * agree to overwrite the existing profile then this method will return 
	 * the profile in question.
	 */
	public ViewProfile getOverwritenProfile(){
		return existingProfile;
	}
	
	public String getProfileName() {
		return profileName;
	}

	@Override
	protected JComponent createComponent() {
		return getContentsPanel();
	}

	@Override
	public boolean performOk() {
		ViewProfile profile = findMatchingProfile(profileName);
		if (profile != null) {
			int result = JOptionPane.showConfirmDialog(getContentsPanel(), 
					Messages.INSTANCE.getOverwriteProfileConfirmMessage(), 
					Messages.INSTANCE.getOverwriteProfileConfirmTitle(), 
					JOptionPane.YES_NO_OPTION, 
					JOptionPane.QUESTION_MESSAGE);
			if (result != JOptionPane.YES_OPTION) {
				return false;
			}
			existingProfile = profile;
		}

		return super.performOk();
	}

	public boolean isPageValid() {
		if (StringUtils.isBlank(profileName)) {
			return false;
		}
		
		// Check to see if the name is used by another profile
		ViewProfile existingProfile = findMatchingProfile(profileName);
		if (existingProfile != null && existingProfile.isSystemDefined()) {
			setErrorMessage(Messages.INSTANCE.getExistingSystemProfileError());
			return false;
		}
		
		setErrorMessage(null);
		return true;
	}
	
	private ViewProfile findMatchingProfile(String profileName) {
		for (ViewProfile profile : existingProfiles) {
			if (profile.getProfileName().equalsIgnoreCase(profileName)) {
				return profile;
			}
		}
		return null;
	}
	
	private void revalidate() {
		if (getContainer() != null) {
			getContainer().updateButtons();
			getContainer().updateMessage();
		}
	}

	/**
	 * This method initializes contentsPanel	
	 * 	
	 * @return javax.swing.JPanel	
	 */
	private JPanel getContentsPanel() {
		if (contentsPanel == null) {
			GridBagConstraints gridBagConstraints2 = new GridBagConstraints();
			gridBagConstraints2.gridx = 0;
			gridBagConstraints2.gridwidth = 2;
			gridBagConstraints2.anchor = GridBagConstraints.WEST;
			gridBagConstraints2.insets = new Insets(5, 5, 5, 5);
			gridBagConstraints2.gridy = 1;
			GridBagConstraints gridBagConstraints1 = new GridBagConstraints();
			gridBagConstraints1.fill = GridBagConstraints.HORIZONTAL;
			gridBagConstraints1.gridy = 0;
			gridBagConstraints1.weightx = 1.0;
			gridBagConstraints1.insets = new Insets(5, 5, 0, 5);
			gridBagConstraints1.gridx = 1;
			GridBagConstraints gridBagConstraints = new GridBagConstraints();
			gridBagConstraints.gridx = 0;
			gridBagConstraints.insets = new Insets(5, 5, 0, 0);
			gridBagConstraints.gridy = 0;
			nameLabel = new JLabel();
			nameLabel.setText(Messages.INSTANCE.getProfileNameFieldLabel());
			contentsPanel = new JPanel();
			contentsPanel.setLayout(new GridBagLayout());
			contentsPanel.setSize(new Dimension(393, 146));
			contentsPanel.add(nameLabel, gridBagConstraints);
			contentsPanel.add(getNameField(), gridBagConstraints1);
			contentsPanel.add(getGlobalCheckBox(), gridBagConstraints2);
		}
		return contentsPanel;
	}

	/**
	 * This method initializes nameField	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getNameField() {
		if (nameField == null) {
			nameField = new JTextField();
			nameField.setName("nameField"); //$NON-NLS-1$
			nameField.setText(profileName);
			FixedSizeDocumentFilter.installFilter(255, nameField);
			nameField.getDocument().addDocumentListener(new DocumentListener() {
				private void update() {
					profileName = getNameField().getText();
					revalidate();
				}

				public void changedUpdate(DocumentEvent e) {
					update();
				}

				public void insertUpdate(DocumentEvent e) {
					update();
				}

				public void removeUpdate(DocumentEvent e) {
					update();
				}
				
			});
		}
		return nameField;
	}

	/**
	 * This method initializes globalCheckBox	
	 * 	
	 * @return javax.swing.JCheckBox	
	 */
	private JCheckBox getGlobalCheckBox() {
		if (globalCheckBox == null) {
			globalCheckBox = new JCheckBox();
			globalCheckBox.setName("globalCheckBox"); //$NON-NLS-1$
			globalCheckBox.setText(Messages.INSTANCE.getGlobalProfileCheckboxLabel(SANscreenClientPlugin.getDefault().getBranding().getProductName()));
			globalCheckBox.setSelected(global);
			globalCheckBox.addItemListener(new ItemListener() {
				public void itemStateChanged(ItemEvent e) {
					global = getGlobalCheckBox().isSelected();
				}
			});
		}
		return globalCheckBox;
	}

}