package timeflow.format.file;

import java.awt.Color;
import java.io.BufferedWriter;
import java.net.URL;

import timeflow.model.*;
import timeflow.data.db.*;

public class HtmlFormat implements Export
{
        TimeflowModel model;
        java.util.List<Field> fields;
        Field title;

        public HtmlFormat()
        {
        }

        public HtmlFormat(TimeflowModel model)
        {
                setModel(model);
        }

        public void setModel(TimeflowModel model)
        {
                this.model = model;
                fields = model.getDB().getFields();
                title = model.getDB().getField(VirtualField.LABEL);
        }

        @Override
        public void export(TimeflowModel model, BufferedWriter out) throws Exception
        {
                setModel(model);
                out.write(makeHeader());
                for (Act a : model.getDB())
                {
                        out.write(makeItem(a));
                }
                out.write(makeFooter());
                out.flush();
        }

        public void append(ActList acts, int start, int end, StringBuffer b)
        {
                for (int i = start; i < end; i++)
                {
                        Act a = acts.get(i);
                        b.append(makeItem(a, i));
                }
        }

        private String makeItem(Act act)
        {
                return makeItem(act, -1);
        }

        public String makeItem(Act act, int id)
        {
                StringBuffer page = new StringBuffer();

                page.append("<tr><td valign=top align=left width=200><b>");
                if (title != null)
                {
                        Field f = model.getColorField();
                        Color c = Color.black;
                        if (f != null)
                        {
                                if (f.getType() == String.class)
                                {
                                        c = model.getDisplay().makeColor(act.getString(f));
                                } else
                                {
                                        String[] tags = act.getTextList(f);
                                        if (tags.length == 0)
                                        {
                                                c = Color.gray;
                                        } else
                                        {
                                                c = model.getDisplay().makeColor(tags[0]);
                                        }
                                }
                        }

                        page.append("<font size=+1 color=" + htmlColor(c) + ">" + act.getString(title) + "</font><br>");
                }

                Field startField = model.getDB().getField(VirtualField.START);

                if (startField != null)
                {
                        page.append("<font color=#999999>" + model.getDisplay().format(act.getTime(startField)) + "</font>");
                }
                page.append("</b><br>");
                if (id >= 0)
                {
                        page.append("<a href=\"e" + id + "\">EDIT</a>");
                }
                page.append("<br></td><td valign=top>");
                for (Field f : fields)
                {
                        page.append("<b><font color=#003399>" + f.getName() + "</font></b>&nbsp;&nbsp;");
                        Object val = act.get(f);
                        if (val instanceof URL)
                        {
                                page.append("<a href=\"" + val + "\">" + val + "</a>");
                        } else
                        {
                                page.append(model.getDisplay().toString(val));
                        }
                        page.append("<br>");

                }
                page.append("<br></td></tr>");

                return page.toString();
        }

        public String makeHeader()
        {
                StringBuffer page = new StringBuffer();
                page.append("<html><body><blockquote>");
                page.append("<br>File: " + model.getDbFile() + "<br>");
                page.append("Source: " + model.getDB().getSource() + "<br><br>");
                page.append("<br><br>");
                page.append("<table border=0>");

                return page.toString();
        }

        public String makeFooter()
        {
                return "</table></blockquote></body></html>";
        }

        static String htmlColor(Color c)
        {
                return '#' + hex2(c.getRed()) + hex2(c.getGreen()) + hex2(c.getBlue());
        }
        private static final String hexDigits = "0123456789ABCDEF";

        private static String hex2(int n)
        {
                return hexDigits.charAt((n / 16) % 16) + "" + hexDigits.charAt(n % 16);
        }

        @Override
        public String getName()
        {
                return "HTML List";
        }
}