/**

 * SQL-DK

 * Copyright © 2013 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.configuration;

import static info.globalcode.sql.dk.Xmlns.CONFIGURATION;

import static info.globalcode.sql.dk.Functions.findByName;

import info.globalcode.sql.dk.formatting.SilentFormatter;

import info.globalcode.sql.dk.formatting.SingleValueFormatter;

import info.globalcode.sql.dk.formatting.TabularFormatter;

import info.globalcode.sql.dk.formatting.TabularPrefetchingFormatter;

import info.globalcode.sql.dk.formatting.TabularWrappingFormatter;

import info.globalcode.sql.dk.formatting.XhtmlFormatter;

import info.globalcode.sql.dk.formatting.XmlFormatter;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Collections;

import java.util.List;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlTransient;

/**

 * Object representation of user configuration loaded from XML.

 *

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

 */

@XmlRootElement(name = "configuration", namespace = CONFIGURATION)

public class Configuration {

	private List<DatabaseDefinition> databases = new ArrayList<>();

	private List<FormatterDefinition> formatters = new ArrayList<>();

	/**

	 * is used if no formatter is specified on CLI nor in user configuration

	 */

	public static final String DEFAULT_FORMATTER = TabularFormatter.NAME;

	/**

	 * Can be used as default if prefetching is ok – for configuration listings (config is alread in

	 * memory, so this does not matter)

	 */

	public static final String DEFAULT_FORMATTER_PREFETCHING = TabularPrefetchingFormatter.NAME;

	private String defaultFormatter;

	/**

	 * Default list of formatters. Is used if particular name is not found in user configuration.

	 */

	private static final Collection<FormatterDefinition> buildInFormatters;

	static {

		Collection<FormatterDefinition> l = new ArrayList<>();

		l.add(new FormatterDefinition(SilentFormatter.NAME, SilentFormatter.class.getName()));

		l.add(new FormatterDefinition(SingleValueFormatter.NAME, SingleValueFormatter.class.getName()));

		l.add(new FormatterDefinition(XmlFormatter.NAME, XmlFormatter.class.getName()));

		l.add(new FormatterDefinition(XhtmlFormatter.NAME, XhtmlFormatter.class.getName()));

		l.add(new FormatterDefinition(TabularFormatter.NAME, TabularFormatter.class.getName()));

		l.add(new FormatterDefinition(TabularPrefetchingFormatter.NAME, TabularPrefetchingFormatter.class.getName()));

		l.add(new FormatterDefinition(TabularWrappingFormatter.NAME, TabularWrappingFormatter.class.getName()));

		buildInFormatters = Collections.unmodifiableCollection(l);

	}

	@XmlElement(name = "database", namespace = CONFIGURATION)

	public List<DatabaseDefinition> getDatabases() {

		return databases;

	}

	public void setDatabases(List<DatabaseDefinition> databases) {

		this.databases = databases;

	}

	/**

	 * @throws ConfigurationException if no database with this name is configured

	 */

	public DatabaseDefinition getDatabase(String name) throws ConfigurationException {

		DatabaseDefinition dd = findByName(databases, name);

		if (dd == null) {

			throw new ConfigurationException("Database is not configured: " + name);

		} else {

			return dd;

		}

	}

	/**

	 * @return only configured formatters

	 * @see #getBuildInFormatters()

	 * @see #getAllFormatters()

	 */

	@XmlElement(name = "formatter", namespace = CONFIGURATION)

	public List<FormatterDefinition> getFormatters() {

		return formatters;

	}

	public void setFormatters(List<FormatterDefinition> formatters) {

		this.formatters = formatters;

	}

	/**

	 * @param name name of desired formatter. Looking for this name in user configuration, then in

	 * buil-in formatters. If null, default from configuration or (if not configured) built-in

	 * default is used.

	 * @return formatter definition

	 * @throws ConfigurationException if no formatter with this name was found

	 */

	public FormatterDefinition getFormatter(String name) throws ConfigurationException {

		if (name == null) {

			return defaultFormatter == null ? getFormatter(DEFAULT_FORMATTER) : getFormatter(defaultFormatter);

		} else {

			FormatterDefinition fd = findByName(formatters, name);

			fd = fd == null ? findByName(buildInFormatters, name) : fd;

			if (fd == null) {

				throw new ConfigurationException("Formatter is not configured: " + name);

			} else {

				return fd;

			}

		}

	}

	/**

	 * @return only built-in formatters

	 * @see #getAllFormatters()

	 * @see #getFormatters()

	 */

	@XmlTransient

	public Collection<FormatterDefinition> getBuildInFormatters() {

		return buildInFormatters;

	}

	/**

	 * @return built-in + configured formatters

	 * @see #getFormatters()

	 */

	@XmlTransient

	public Collection<FormatterDefinition> getAllFormatters() {

		Collection<FormatterDefinition> allFormatters = new ArrayList<>();

		allFormatters.addAll(buildInFormatters);

		allFormatters.addAll(formatters);

		return allFormatters;

	}

	/**

	 * @return name of default formatter, is used if name is not specified on CLI

	 */

	@XmlElement(name = "defaultFormatter", namespace = CONFIGURATION)

	public String getDefaultFormatter() {

		return defaultFormatter;

	}

	public void setDefaultFormatter(String defaultFormatter) {

		this.defaultFormatter = defaultFormatter;

	}

}