/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * See LICENSE.txt included in this distribution for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at LICENSE.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 */

package org.opensolaris.opengrok.management.client;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Level;

import org.opensolaris.opengrok.configuration.Configuration;
import org.opensolaris.opengrok.management.Constants;
import org.opensolaris.opengrok.management.OGAgent;
import org.opensolaris.opengrok.util.IOUtils;

/**
 *
 * @author Jan S Berg
 */
public class SettingsPersistence {

    /** property key used to obtain the timeout for indexing */
    public static final String INDEXTIMEOUTKEY = 
        Configuration.PROPERTY_KEY_PREFIX + "management.indextimeout";
    /** property key used to obtain the JMX connection timeout value */
    public static final String CONNECTIONTIMEOUTKEY = 
        Configuration.PROPERTY_KEY_PREFIX + "management.connectiontimeout";
    /** property key used to obtain the file log path */
    public static final String LOGGINGPATHKEY = Constants.LOG_PATH;
    /** property key used to obtain file log level */
    public static final String FILELOGLEVELKEY = 
        Configuration.PROPERTY_KEY_PREFIX + "management.logging.filelevel";
    /** property key used to obtain console log level */
    public static final String CONSOLELOGLEVELKEY = 
        Configuration.PROPERTY_KEY_PREFIX + "management.logging.consolelevel";
    private final Properties ogcProperties = new Properties();

    /**
     * Get settings for the OpenGrok Management Agent Client
     * Try if a config file has been given
     * if not set, try default settings (oga.properties in management directory)
     * @param cfgfile 
     * @throws java.io.IOException
     */
    @SuppressWarnings("resource")
    public SettingsPersistence(String cfgfile) throws IOException {
        InputStream in = null;
        try {
            in = OGAgent.class.getResourceAsStream("oga.properties");
            if (in != null) {
                ogcProperties.load(in);
            }
            //do we need to propagate this up ?
        } finally {
            IOUtils.close(in);
        }

        if (cfgfile != null) {
            File propertyFile = new File(cfgfile);
            FileInputStream is = null;
            try {
                is = new FileInputStream(propertyFile);
                ogcProperties.load(is);
                //do we need to propagate this up ?
            } finally { //NOPMD
                IOUtils.close(is);
            }
        }
    }

    /**
     * Get the JMX URL to the agent. Generate a URL from host and port
     * properties if no URL has been specified.
     *
     * @return the URL to the agent
     */
    public String getAgentUrl() {
        String url = ogcProperties.getProperty(Constants.JMX_URL);
        if (url == null) {
            String host = ogcProperties.getProperty(Constants.JMX_HOST, "localhost");
            int jmxport = Integer.parseInt(
                    ogcProperties.getProperty(Constants.JMX_PORT, "9292"));
            int rmiport = Integer.parseInt(ogcProperties.getProperty(
                Constants.RMI_PORT, String.valueOf(jmxport + 1)));
            url = "service:jmx:rmi://" + host + ":" + jmxport +
                    "/jndi/rmi://" + host + ":" + rmiport + "/opengrok";
        }
        return url;
    }

    /**
     * Get the property with the given key.
     * @param key   key to use for lookup.
     * @return {@code null} if not found, the corresponding value otherwise.
     */
    public String getProperty(String key) {
        return ogcProperties.getProperty(key);
    }

    /**
     * Set the property with the given key.
     * @param key   key to use for mapping.
     * @param val   value to set.
     */
    public void setProperty(String key, String val) {
        ogcProperties.setProperty(key, val);
    }

    /**
     * Get log level assigned for logging to file.
     * @return {@code null} if not found, the corresponding value otherwise.
     */
    public Level getFileLogLevel() {
        return Level.parse(ogcProperties.getProperty(FILELOGLEVELKEY));
    }

    /**
     * Get log level assigned for logging to console.
     * @return {@code null} if not found, the corresponding value otherwise.
     */
    public Level getConsoleLogLevel() {
        return Level.parse(ogcProperties.getProperty(CONSOLELOGLEVELKEY));
    }
}