package com.gpl.rpg.atcontentstudio.ui;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import javax.swing.ComboBoxModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.ListCellRenderer;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.ListDataListener;

import com.gpl.rpg.atcontentstudio.ATContentStudio;
import com.gpl.rpg.atcontentstudio.model.Project;
import com.gpl.rpg.atcontentstudio.model.Project.ResourceSet;
import com.gpl.rpg.atcontentstudio.model.Workspace;
import com.gpl.rpg.atcontentstudio.model.gamedata.GameDataSet;
import com.gpl.rpg.atcontentstudio.model.maps.TMXMapSet;
import com.gpl.rpg.atcontentstudio.model.sprites.SpriteSheetSet;

public class ProjectCreationWizard extends JDialog {

	private static final long serialVersionUID = -2854969975146867119L;

	final JTextField projectNameField;
	final JComboBox<String> atSourceSelectionCombo;
	final JComboBox<Project.ResourceSet> resourceSetToUse;

	final JButton browse;
	final JButton okButton;
	final JButton cancelButton;
	
	final JLabel errorLabel;
	
	public ProjectCreationWizard() {
		super(ATContentStudio.frame);
		setTitle("Create project");
		projectNameField = new JTextField();
		atSourceSelectionCombo = new JComboBox<String>();
		resourceSetToUse = new JComboBox<Project.ResourceSet>(new ComboBoxModel<Project.ResourceSet>() {

			Project.ResourceSet selected = Project.ResourceSet.gameData;
			
			@Override
			public int getSize() {
				return Project.ResourceSet.values().length;
			}

			@Override
			public ResourceSet getElementAt(int index) {
				return Project.ResourceSet.values()[index];
			}

			List<ListDataListener> listeners = new CopyOnWriteArrayList<ListDataListener>();
			
			@Override
			public void addListDataListener(ListDataListener l) {
				listeners.add(l);
			}

			@Override
			public void removeListDataListener(ListDataListener l) {
				listeners.remove(l);
			}

			@Override
			public void setSelectedItem(Object anItem) {
				selected = (ResourceSet) anItem;
			}

			@Override
			public Object getSelectedItem() {
				return selected;
			}
			
		});
		resourceSetToUse.setRenderer(new ListCellRenderer<Project.ResourceSet>() {
			@Override
			public Component getListCellRendererComponent(
					JList<? extends ResourceSet> list, ResourceSet value,
					int index, boolean isSelected, boolean cellHasFocus) {
				switch (value) {
				case allFiles:
					return new JLabel("All available files");
				case debugData:
					return new JLabel("Debug data");
				case gameData:
					return new JLabel("Real game data");
				default:
					return new JLabel();
				}
					
			}
		});
		browse = new JButton("Browse...");
		okButton = new JButton("Ok");
		cancelButton = new JButton("Cancel");
		errorLabel = new JLabel("Enter the following information about your project.");
		
		projectNameField.getDocument().addDocumentListener(new DocumentListener() {
			@Override
			public void removeUpdate(DocumentEvent e) {
				updateOkButtonEnablement();
			}
			@Override
			public void insertUpdate(DocumentEvent e) {
				updateOkButtonEnablement();
			}
			@Override
			public void changedUpdate(DocumentEvent e) {
				updateOkButtonEnablement();
			}
		});
		for (File f : Workspace.activeWorkspace.knownMapSourcesFolders) {
			atSourceSelectionCombo.addItem(f.getAbsolutePath());
		}
		atSourceSelectionCombo.setEditable(true);
		atSourceSelectionCombo.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				updateOkButtonEnablement();
			}
		});
		browse.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				JFileChooser chooser = new JFileChooser();
				boolean keepTrying = true;
				if (atSourceSelectionCombo.getSelectedItem() != null && ((String)atSourceSelectionCombo.getSelectedItem()).length() > 0) {
					File f = new File((String)atSourceSelectionCombo.getSelectedItem());
					if (f.exists()) {
						chooser.setCurrentDirectory(f);
						keepTrying = false;
					}
				}
				if (keepTrying && Workspace.activeWorkspace.knownMapSourcesFolders != null && !Workspace.activeWorkspace.knownMapSourcesFolders.isEmpty()) {
					chooser.setCurrentDirectory(Workspace.activeWorkspace.knownMapSourcesFolders.iterator().next());
				}
				chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
				int result = chooser.showOpenDialog(ProjectCreationWizard.this);
				if (result == JFileChooser.APPROVE_OPTION) {
					atSourceSelectionCombo.setSelectedItem(chooser.getSelectedFile().getAbsolutePath());
					updateOkButtonEnablement();
				}
			}
		});
		okButton.setEnabled(false);
		okButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				File atSourceFolder = new File((String) atSourceSelectionCombo.getSelectedItem());
				if (!Workspace.activeWorkspace.knownMapSourcesFolders.contains(atSourceFolder)) {
					Workspace.activeWorkspace.knownMapSourcesFolders.add(atSourceFolder);
				}
				Workspace.createProject(projectNameField.getText(), atSourceFolder, (Project.ResourceSet)resourceSetToUse.getSelectedItem());
				ProjectCreationWizard.this.dispose();
			}
		});
		
		cancelButton.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				ProjectCreationWizard.this.dispose();
			}
		});
		
		JPanel panel = new JPanel();
		panel.setLayout(new GridBagLayout());
		GridBagConstraints c =new GridBagConstraints();
		
		c.anchor = GridBagConstraints.NORTHWEST;
		c.fill = GridBagConstraints.BOTH;
		c.gridheight = 1;
		c.gridwidth = 3;
		c.gridx = 1;
		c.gridy = 1;
		c.weightx = 100;
		c.weighty = 100;
		panel.add(errorLabel, c);
		
		c.gridy++;
		c.gridx = 1;
		c.gridwidth = 1;
		c.weightx = 20;
		panel.add(new JLabel("Project name: "), c);
		
		c.gridx++;
		c.gridwidth = 2;
		c.weightx = 80;
		panel.add(projectNameField, c);
		
		c.gridy++;
		c.gridx = 1;
		c.gridwidth = 1;
		c.weightx = 20;
		panel.add(new JLabel("AT Source: "), c);

		c.gridx++;
		c.weightx = 60;
		panel.add(atSourceSelectionCombo, c);
		
		c.gridx++;
		c.weightx = 20;
		panel.add(browse, c);
		
		c.gridy++;
		c.gridx = 1;
		c.gridwidth = 1;
		c.weightx = 20;
		panel.add(new JLabel("Resource set: "), c);

		c.gridx++;
		c.weightx = 80;
		c.gridwidth = 2;
		panel.add(resourceSetToUse, c);
		
		JPanel buttonPane = new JPanel();
		buttonPane.setLayout(new GridBagLayout());
		GridBagConstraints c2 = new GridBagConstraints();
		c2.fill = GridBagConstraints.HORIZONTAL;
		c2.gridx = 1;
		c2.weightx = 80;
		
		c2.gridx = 1;
		c2.weightx = 80;
		buttonPane.add(new JLabel(), c2);

		c2.gridx++;
		c2.weightx = 10;
		c.fill = GridBagConstraints.NONE;
		buttonPane.add(cancelButton, c2);
		
		c2.gridx++;
		c2.weightx = 10;
		buttonPane.add(okButton, c2);
		
		c.gridy++;
		c.fill = GridBagConstraints.HORIZONTAL;
		c.gridwidth = 3;
		panel.add(buttonPane, c);
		
		updateOkButtonEnablement();
		
		setContentPane(panel);
		
		pack();
		Dimension sdim = Toolkit.getDefaultToolkit().getScreenSize();
		Dimension wdim = getSize();
		setLocation((sdim.width - wdim.width)/2, (sdim.height - wdim.height)/2);
	}


	protected void updateOkButtonEnablement() {
		if (projectNameField.getText() == null || projectNameField.getText().length() <= 0) {
			errorLabel.setText("<html><font color=\"#FF0000\">Select a project name.</font></html>");
			this.okButton.setEnabled(false);
			return;
		}
		if (atSourceSelectionCombo.getSelectedItem() == null || ((String)atSourceSelectionCombo.getSelectedItem()).length() <= 0) {
			errorLabel.setText("<html><font color=\"#FF0000\">Select an AT source root folder.</font></html>");
			this.okButton.setEnabled(false);
			return;
		}
		File projFolder = new File(Workspace.activeWorkspace.baseFolder, projectNameField.getText()+File.separator);
		File sourceFolder = new File((String) atSourceSelectionCombo.getSelectedItem());
		if (projFolder.exists()) {
			errorLabel.setText("<html><font color=\"#FF0000\">A project with this name already exists.</font></html>");
			this.okButton.setEnabled(false);
			return;
		} else {
			try {
				projFolder.getCanonicalPath();
			} catch (IOException ioe) {
				errorLabel.setText("<html><font color=\"#FF0000\">"+projectNameField.getText()+" is not a valid project name.</font></html>");
				this.okButton.setEnabled(false);
				return;
			}
		}
		if (!sourceFolder.exists()) {
			errorLabel.setText("<html><font color=\"#FF0000\">The selected AT source root folder does not exist.</font></html>");
			this.okButton.setEnabled(false);
			return;
		} else {
			File res = new File(sourceFolder, GameDataSet.DEFAULT_REL_PATH_IN_SOURCE);
			if (!res.exists()) {
				errorLabel.setText("<html><font color=\"#FF0000\">The selected AT source root folder does not contain the \"res\" folder.</font></html>");
				this.okButton.setEnabled(false);
				return;
			}
			File drawable = new File(sourceFolder, SpriteSheetSet.DEFAULT_REL_PATH_IN_SOURCE);
			if (!drawable.exists()) {
				errorLabel.setText("<html><font color=\"#FF0000\">The selected AT source root folder does not contain the \"drawable\" folder.</font></html>");
				this.okButton.setEnabled(false);
				return;
			}
			File xml = new File(sourceFolder, TMXMapSet.DEFAULT_REL_PATH_IN_SOURCE);
			if (!xml.exists()) {
				errorLabel.setText("<html><font color=\"#FF0000\">The selected AT source root folder does not contain the \"xml\" folder.</font></html>");
				this.okButton.setEnabled(false);
				return;
			}
		}
		if (!projFolder.exists() && sourceFolder.exists()) {
			errorLabel.setText("<html><font color=\"#00AA00\">Everything looks good !</font></html>");
			this.okButton.setEnabled(true);
			return;
		}
	}
	
}