package com.gpl.rpg.atcontentstudio;

import java.awt.Color;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.swing.JEditorPane;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.plaf.FontUIResource;

import com.gpl.rpg.atcontentstudio.model.Workspace;
import com.gpl.rpg.atcontentstudio.ui.StudioFrame;
import com.gpl.rpg.atcontentstudio.ui.WorkerDialog;
import com.gpl.rpg.atcontentstudio.ui.WorkspaceSelector;

import prefuse.data.expression.parser.ExpressionParser;


public class ATContentStudio {

	public static final String APP_NAME = "Andor's Trail Content Studio";
	public static final String APP_VERSION = "v0.6.9";
	
	public static final String CHECK_UPDATE_URL = "https://andorstrail.com/static/ATCS_latest";
	public static final String DOWNLOAD_URL = "https://andorstrail.com/viewtopic.php?f=6&t=4806";
	
	public static final String FONT_SCALE_ENV_VAR_NAME = "FONT_SCALE";

	public static boolean STARTED = false;
	public static float SCALING=1.0f;
	public static StudioFrame frame = null;

	//Need to keep a strong reference to it, to avoid garbage collection that'll reset these loggers.
	public static final List<Logger> configuredLoggers = new LinkedList<Logger>();
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String fontScaling = System.getProperty(FONT_SCALE_ENV_VAR_NAME);
		Float fontScale = null;
		if (fontScaling != null) {
			try {
				fontScale = Float.parseFloat(fontScaling);
				SCALING=fontScale;
			} catch (NumberFormatException e) {
				System.err.println("Failed to parse font scaling parameter. Using default.");
				e.printStackTrace();
			}
		}
		
		ConfigCache.init();
		
		try {
			String laf = ConfigCache.getFavoriteLaFClassName();
			if (laf == null) laf = UIManager.getSystemLookAndFeelClassName();
			UIManager.setLookAndFeel(laf);
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (UnsupportedLookAndFeelException e) {
			e.printStackTrace();
		}
		
		
		scaleUIFont();

		//Need to keep a strong reference to it, to avoid garbage collection that'll reset this setting.
		Logger l = Logger.getLogger(ExpressionParser.class.getName());
		l.setLevel(Level.OFF);
		configuredLoggers.add(l); 
		
		final WorkspaceSelector wsSelect = new WorkspaceSelector();
		wsSelect.pack();
		Dimension sdim = Toolkit.getDefaultToolkit().getScreenSize();
		Dimension wdim = wsSelect.getSize();
		wsSelect.setLocation((sdim.width - wdim.width)/2, (sdim.height - wdim.height)/2);
		wsSelect.setVisible(true);
		
		wsSelect.addWindowListener(new WindowAdapter() {
			@Override
			public synchronized void windowClosed(WindowEvent e) {
				if (wsSelect.selected != null && !STARTED) {
					ATContentStudio.STARTED = true;
					final File workspaceRoot = new File(wsSelect.selected);
					WorkerDialog.showTaskMessage("Loading your workspace...", null, new Runnable(){
						public void run() {
							Workspace.setActive(workspaceRoot);
							if (Workspace.activeWorkspace.settings.useInternet.getCurrentValue() && Workspace.activeWorkspace.settings.checkUpdates.getCurrentValue()) {
								new Thread() {
									public void run() {checkUpdate();}
								}.start();
							}
							frame = new StudioFrame(APP_NAME+" "+APP_VERSION);
							frame.setVisible(true);
							frame.setDefaultCloseOperation(StudioFrame.DO_NOTHING_ON_CLOSE);
						};
					});
					for (File f : ConfigCache.getKnownWorkspaces()) {
						if (workspaceRoot.equals(f)) {
							if (!workspaceRoot.equals(ConfigCache.getLatestWorkspace())) {
								ConfigCache.setLatestWorkspace(f);
							}
							return;
						}
					}
					ConfigCache.addWorkspace(workspaceRoot);
					ConfigCache.setLatestWorkspace(workspaceRoot);

				}
			}
		});
	}
	
	private static void checkUpdate() {
		BufferedReader in = null;
		try {
			URL url = new URL(CHECK_UPDATE_URL);
			in = new BufferedReader(new InputStreamReader(url.openStream()));

			String inputLine, lastLine = null;
			while ((inputLine = in.readLine()) != null) {lastLine = inputLine;}
			if (lastLine != null && !lastLine.equals(APP_VERSION)) {
				
				// for copying style
			    JLabel label = new JLabel();
			    Font font = label.getFont();
		        Color color = label.getBackground();

			    // create some css from the label's font
			    StringBuffer style = new StringBuffer("font-family:" + font.getFamily() + ";");
			    style.append("font-weight:" + (font.isBold() ? "bold" : "normal") + ";");
			    style.append("font-size:" + font.getSize() + "pt;");
			    style.append("background-color: rgb("+color.getRed()+","+color.getGreen()+","+color.getBlue()+");");
				
				JEditorPane ep = new JEditorPane("text/html", "<html><body style=\"" + style + "\">"
						+ "You are not running the latest ATCS version.<br/>"
						+ "You can get the latest version ("+lastLine+") by clicking the link below.<br/>"
						+ "<a href=\""+DOWNLOAD_URL+"\">"+DOWNLOAD_URL+"</a><br/>"
						+ "<br/>"
						+ "</body></html>");
				
				ep.setEditable(false);
				ep.setBorder(null);
				
				ep.addHyperlinkListener(new HyperlinkListener() {
					
					@Override
					public void hyperlinkUpdate(HyperlinkEvent e) {
						try {
							if (e.getEventType().equals(HyperlinkEvent.EventType.ACTIVATED)) {
								Desktop.getDesktop().browse(e.getURL().toURI());
							}
						} catch (IOException e1) {
							e1.printStackTrace();
						} catch (URISyntaxException e1) {
							e1.printStackTrace();
						}
					}
				});
				
				JOptionPane.showMessageDialog(null, ep, "Update available", JOptionPane.INFORMATION_MESSAGE);
			}
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				if (in != null) in.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	
	public static void scaleUIFont() {
		if (SCALING != 1.0f) {
			System.out.println("Scaling fonts to "+SCALING);
			UIDefaults defaults = UIManager.getLookAndFeelDefaults();
			Map<Object, Object> newDefaults = new HashMap<Object, Object>();
			for (Enumeration<Object> e = defaults.keys(); e.hasMoreElements();) {
				Object key = e.nextElement();
				Object value = defaults.get(key);
				if (value instanceof Font) {
					Font font = (Font) value;
					int newSize = (int)(font.getSize() * SCALING);
					if (value instanceof FontUIResource) {
						newDefaults.put(key, new FontUIResource(font.getName(), font.getStyle(), newSize));
					} else {
						newDefaults.put(key, new Font(font.getName(), font.getStyle(), newSize));
					}
				}
			}
			for (Object key : newDefaults.keySet()) {
				defaults.put(key, newDefaults.get(key));
			}
		}
	}
}