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// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
 * If you like this project or if you find it useful, you can support us at:
 *
 * https://plantuml.com/patreon (only 1$ per month!)
 * https://plantuml.com/liberapay (only 1€ per month!)
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 *
 *
 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
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 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
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 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.stats;

import java.io.OutputStream;
import java.text.DateFormat;
import java.util.Collection;
import java.util.Date;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import net.sourceforge.plantuml.stats.api.Stats;
import net.sourceforge.plantuml.stats.api.StatsColumn;
import net.sourceforge.plantuml.stats.api.StatsLine;
import net.sourceforge.plantuml.stats.api.StatsTable;
import net.sourceforge.plantuml.text.BackSlash;
import net.sourceforge.plantuml.xml.XmlFactories;

public class XmlConverter {

	private final DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM);

	private final Stats stats;

	public XmlConverter(Stats stats) {
		this.stats = stats;
	}

	private Document getDocument() throws ParserConfigurationException {
		final DocumentBuilder builder = XmlFactories.newDocumentBuilder();
		final Document document = builder.newDocument();
		document.setXmlStandalone(true);

		final Element root = (Element) document.createElement("plantuml".toUpperCase());
		document.appendChild(root);

		// final Element elt1 = (Element)
		// document.createElement("totalLaunch".toUpperCase());
		// elt1.setTextContent("" + stats.totalLaunch());
		// root.appendChild(elt1);

		addNode(root, document, stats.getLastSessions());
		addNode(root, document, stats.getCurrentSessionByDiagramType());
		addNode(root, document, stats.getCurrentSessionByFormat());
		addNode(root, document, stats.getAllByDiagramType());
		addNode(root, document, stats.getAllByFormat());

		return document;
	}

	private void addNode(Element root, Document document, StatsTable table) {
		final Element elt = (Element) document.createElement(toXmlName(table.getName()).toUpperCase());

		for (StatsLine statsLine : table.getLines()) {
			final Element line = (Element) document.createElement("line".toUpperCase());
			for (StatsColumn col : table.getColumnHeaders()) {
				final Element value = (Element) document.createElement(col.name());
				// value.setAttribute("value", toText(statsLine.getValue(col)));
				value.setTextContent(toText(statsLine.getValue(col)));
				line.appendChild(value);
			}
			elt.appendChild(line);
		}

		root.appendChild(elt);
	}

	private String toXmlName(String name) {
		return name.replaceAll("\\W+", "_");
	}

	private String toText(Object tmp) {
		if (tmp instanceof Date) {
			return "" + ((Date) tmp).getTime();
		}
		if (tmp == null) {
			return "";
		}
		return tmp.toString();
	}

	private Transformer getTransformer() throws TransformerException {
		final Transformer transformer = XmlFactories.newTransformer();
		transformer.setOutputProperty(OutputKeys.STANDALONE, "yes");
		return transformer;
	}

	public void createXml(OutputStream os) throws TransformerException, ParserConfigurationException {
		final DOMSource source = new DOMSource(getDocument());
		final StreamResult scrResult = new StreamResult(os);
		getTransformer().transform(source, scrResult);

	}

	public String toHtml() {
		final StringBuilder result = new StringBuilder();
		result.append("");
		result.append("");
		result.append("Statistics");
		printTableHtml(result, stats.getLastSessions());
		result.append("Current session statistics");
		printTableHtml(result, stats.getCurrentSessionByDiagramType());
		result.append("");
		printTableHtml(result, stats.getCurrentSessionByFormat());
		result.append("
General statistics since ever");
		printTableHtml(result, stats.getAllByDiagramType());
		result.append("");
		printTableHtml(result, stats.getAllByFormat());
		result.append("");
		return result.toString();
	}

	private void printTableHtml(StringBuilder result, StatsTable table) {
		final Collection headers = table.getColumnHeaders();
		result.append("");
		result.append(getHtmlHeader(headers));
		final List lines = table.getLines();
		for (int i = 0; i < lines.size(); i++) {
			final StatsLine line = lines.get(i);
			final boolean bold = i == lines.size() - 1;
			result.append(getCreoleLine(headers, line, bold));

		}
		result.append("");
	}

	private String getCreoleLine(Collection headers, StatsLine line, boolean bold) {
		final StringBuilder result = new StringBuilder();
		if (bold) {
			result.append("");
		} else {
			result.append("");
		}
		for (StatsColumn col : headers) {
			final Object v = line.getValue(col);
			if (v instanceof Long || v instanceof HumanDuration) {
				result.append("");
			} else {
				result.append("");
			}
			if (bold) {
				result.append("");
			}
			if (v instanceof Long) {
				result.append(String.format("%,d", v));
			} else if (v instanceof Date) {
				result.append(formatter.format(v));
			} else if (v == null || v.toString().length() == 0) {
				result.append(" ");
			} else {
				result.append(v.toString());
			}
			if (bold) {
				result.append("");
			}
			result.append("");
		}
		result.append("");
		return result.toString();
	}

	private String getHtmlHeader(Collection headers) {
		final StringBuilder sb = new StringBuilder();
		sb.append("");
		for (StatsColumn col : headers) {
			sb.append("");
			sb.append(col.getTitle().replace(BackSlash.BS_BS_N, "
"));
			sb.append("");
		}
		sb.append("");
		return sb.toString();
	}

}