/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.db;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;

import org.xml.sax.Attributes;

import ch.qos.logback.core.joran.action.Action;
import ch.qos.logback.core.joran.spi.InterpretationContext;
import ch.qos.logback.core.joran.util.PropertySetter;
import ch.qos.logback.core.joran.util.beans.BeanDescriptionCache;
import ch.qos.logback.core.util.OptionHelper;

/**
 *
 * @author Ceki Gulcu
 *
 */
public class BindDataSourceToJNDIAction extends Action {

    static final String DATA_SOURCE_CLASS = "dataSourceClass";
    static final String URL = "url";
    static final String USER = "user";
    static final String PASSWORD = "password";
	private final BeanDescriptionCache beanDescriptionCache;

    public BindDataSourceToJNDIAction(BeanDescriptionCache beanDescriptionCache) {
		this.beanDescriptionCache = beanDescriptionCache;
	}

	/**
     * Instantiates an a data source and bind it to JNDI
     * Most of the required parameters are placed in the ec.substitutionProperties
     */
    public void begin(InterpretationContext ec, String localName, Attributes attributes) {
        String dsClassName = ec.getProperty(DATA_SOURCE_CLASS);

        if (OptionHelper.isEmpty(dsClassName)) {
            addWarn("dsClassName is a required parameter");
            ec.addError("dsClassName is a required parameter");

            return;
        }

        String urlStr = ec.getProperty(URL);
        String userStr = ec.getProperty(USER);
        String passwordStr = ec.getProperty(PASSWORD);

        try {
            DataSource ds = (DataSource) OptionHelper.instantiateByClassName(dsClassName, DataSource.class, context);

            PropertySetter setter = new PropertySetter(beanDescriptionCache,ds);
            setter.setContext(context);

            if (!OptionHelper.isEmpty(urlStr)) {
                setter.setProperty("url", urlStr);
            }

            if (!OptionHelper.isEmpty(userStr)) {
                setter.setProperty("user", userStr);
            }

            if (!OptionHelper.isEmpty(passwordStr)) {
                setter.setProperty("password", passwordStr);
            }

            Context ctx = new InitialContext();
            ctx.rebind("dataSource", ds);
        } catch (Exception oops) {
            addError("Could not bind  datasource. Reported error follows.", oops);
            ec.addError("Could not not bind  datasource of type [" + dsClassName + "].");
        }
    }

    public void end(InterpretationContext ec, String name) {
    }
}