/**

  * SQL-DK

  * Copyright © 2014 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program is 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 General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package info.globalcode.sql.dk.formatting;

 import info.globalcode.sql.dk.Constants;

 import info.globalcode.sql.dk.NamedParameter;

 import info.globalcode.sql.dk.Parameter;

 import info.globalcode.sql.dk.Xmlns;

 import info.globalcode.sql.dk.configuration.DatabaseDefinition;

 import info.globalcode.sql.dk.configuration.Properties;

 import info.globalcode.sql.dk.configuration.Property;

 import java.sql.Array;

 import java.sql.SQLException;

 import java.util.Date;

 import java.util.List;

 import java.util.Map;

 import java.util.Scanner;

 import java.util.logging.Level;

 import java.util.logging.Logger;

 import javax.xml.namespace.QName;

 /**

  * Prints result sets and parameters as tables, SQL as preformatted and updates counts as

  * paragraphs. You can pick XHTML fragments (usually tabular data) and use it on your website or use

  * whole output as preview or report.

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class XhtmlFormatter extends AbstractXmlFormatter {

 	private static final Logger log = Logger.getLogger(XhtmlFormatter.class.getName());

 	public static final String NAME = "xhtml"; // bash-completion:formatter

 	private static final String DOCTYPE = "html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN\" \"http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd\"";

 	private static final String CSS_FILE = "info/globalcode/sql/dk/formatter/XhtmlFormatter.css";

 	private int statementCounter = 0;

 	private int resultSetCounter = 0;

 	private int updatesResultCounter = 0;

 	public XhtmlFormatter(FormatterContext formatterContext) {

 		super(addDefaults(formatterContext));

 	}

 	private QName qname(String localPart) {

 		return new QName(Xmlns.XHTML, localPart);

 	}

 	/**

 	 * Do not indent text – preserve whitespace for pre elements

 	 */

 	private static FormatterContext addDefaults(FormatterContext formatterContext) {

 		Properties defaults = new Properties(1);

 		defaults.add(new Property(PROPERTY_INDENT_TEXT, "false"));

 		formatterContext.getProperties().setLastDefaults(defaults);

 		return formatterContext;

 	}

 	@Override

 	public void writeStartBatch() {

 		super.writeStartBatch();

 		printStartDocument();

 		printDoctype(DOCTYPE);

 		printStartElement(qname("html"), singleAttribute(qname("xmlns"), Xmlns.XHTML));

 		printStartElement(qname("head"));

 		printTextElement(qname("title"), null, Constants.PROGRAM_NAME + ": batch results");

 		printCss();

 		printEndElement();

 		printStartElement(qname("body"));

 	}

 	private void printCss() {

 		try (Scanner css = new Scanner(getClass().getClassLoader().getResourceAsStream(CSS_FILE))) {

 			printStartElement(qname("style"), singleAttribute(qname("type"), "text/css"));

 			while (css.hasNext()) {

 				printText(css.nextLine(), true);

 			}

 			printEndElement();

 		}

 	}

 	@Override

 	public void writeEndBatch() {

 		super.writeEndBatch();

 		printEndElement();

 		printEndElement();

 		printEndDocument();

 	}

 	@Override

 	public void writeStartDatabase(DatabaseDefinition databaseDefinition) {

 		super.writeStartDatabase(databaseDefinition);

 		printTextElement(qname("h1"), null, "Database: " + databaseDefinition.getName());

 		printStartElement(qname("p"));

 		printText("This is XHTML output of batch executed at: ", true);

 		printText(new Date().toString(), true);

 		printEndElement();

 	}

 	@Override

 	public void writeQuery(String sql) {

 		super.writeQuery(sql);

 		printTextElement(qname("pre"), null, sql);

 	}

 	@Override

 	public void writeParameters(List<? extends Parameter> parameters) {

 		super.writeParameters(parameters);

 		if (parameters == null || parameters.isEmpty()) {

 			printTextElement(qname("p"), null, "(this query has no parameters)");

 		} else {

 			printTextElement(qname("h3"), null, "Parameters:");

 			printStartElement(qname("table"));

 			printStartElement(qname("thead"));

 			printStartElement(qname("tr"));

 			printTextElement(qname("td"), null, "id");

 			printTextElement(qname("td"), null, "type");

 			printTextElement(qname("td"), null, "value");

 			printEndElement();

 			printEndElement();

 			printStartElement(qname("tbody"));

 			for (int i = 0; i < parameters.size(); i++) {

 				Parameter p = parameters.get(i);

 				printStartElement(qname("tr"));

 				String numberOrName;

 				if (p instanceof NamedParameter) {

 					numberOrName = ((NamedParameter) p).getName();

 				} else {

 					numberOrName = String.valueOf(i + 1);

 				}

 				printTextElement(qname("td"), null, numberOrName);

 				printTextElement(qname("td"), null, p.getType().name());

 				printTableData(p.getValue());

 				printEndElement();

 			}

 			printEndElement();

 			printEndElement();

 		}

 	}

 	private void printTableData(Object value) {

 		if (value instanceof Array) {

 			Array sqlArray = (Array) value;

 			try {

 				Object[] array = (Object[]) sqlArray.getArray();

 				printStartElement(qname("td"));

 				printArray(array);

 				printEndElement();

 			} catch (SQLException e) {

 				log.log(Level.SEVERE, "Unable to format array", e);

 				printTableData(String.valueOf(value));

 			}

 		} else {

 			Map<QName, String> attributes = null;

 			if (value instanceof Number) {

 				attributes = singleAttribute(qname("class"), "number");

 			} else if (value instanceof Boolean) {

 				attributes = singleAttribute(qname("class"), "boolean");

 			}

 			printTextElement(qname("td"), attributes, String.valueOf(value));

 		}

 	}

 	private void printArray(Object[] array) {

 		printStartElement(qname("ul"));

 		for (Object o : array) {

 			if (o instanceof Object[]) {

 				printStartElement(qname("li"));

 				printTextElement(qname("p"), null, "nested array:");

 				printArray((Object[]) o);

 				printEndElement();

 			} else {

 				printTextElement(qname("li"), null, String.valueOf(o));

 			}

 		}

 		printEndElement();

 	}

 	@Override

 	public void writeStartResultSet(ColumnsHeader header) {

 		super.writeStartResultSet(header);

 		resultSetCounter++;

 		printEmptyElement(qname("hr"), null);

 		printTextElement(qname("h3"), null, "Result set #" + resultSetCounter);

 		printStartElement(qname("table"));

 		printStartElement(qname("thead"));

 		printStartElement(qname("tr"));

 		for (ColumnDescriptor cd : header.getColumnDescriptors()) {

 			// TODO: type

 			printTextElement(qname("td"), null, cd.getLabel());

 		}

 		printEndElement();

 		printEndElement();

 		printStartElement(qname("tbody"));

 	}

 	@Override

 	public void writeEndResultSet() {

 		super.writeEndResultSet();

 		printEndElement();

 		printEndElement();

 		printTextElement(qname("p"), null, "Record count: " + getCurrentRowCount());

 	}

 	@Override

 	public void writeStartRow() {

 		super.writeStartRow();

 		printStartElement(qname("tr"));

 	}

 	@Override

 	public void writeColumnValue(Object value) {

 		super.writeColumnValue(value);

 		printTableData(value);

 	}

 	@Override

 	public void writeEndRow() {

 		super.writeEndRow();

 		printEndElement();

 	}

 	@Override

 	public void writeStartStatement() {

 		super.writeStartStatement();

 		statementCounter++;

 		printEmptyElement(qname("hr"), null);

 		printTextElement(qname("h2"), null, "SQL statement #" + statementCounter);

 		resultSetCounter = 0;

 		updatesResultCounter = 0;

 	}

 	@Override

 	public void writeUpdatesResult(int updatedRowsCount) {

 		super.writeUpdatesResult(updatedRowsCount);

 		updatesResultCounter++;

 		printEmptyElement(qname("hr"), null);

 		printTextElement(qname("h3"), null, "Updates result #" + updatesResultCounter);

 		printTextElement(qname("p"), null, "Updated rows: " + updatedRowsCount);

 	}

 }