/*
 * Copyright (c) 2015, salesforce.com, inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 *
 *    Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *    following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
 *    the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 *    Neither the name of salesforce.com, inc. nor the names of its contributors may be used to endorse or
 *    promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.salesforce.dataloader.process;
/*
 * Copyright (c) 2005, salesforce.com, inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided
 * that the following conditions are met:
 *
 *    Redistributions of source code must retain the above copyright notice, this list of conditions and the
 *    following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
 *    the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 *    Neither the name of salesforce.com, inc. nor the names of its contributors may be used to endorse or
 *    promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */



import java.io.File;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.LogManager;

import com.salesforce.dataloader.config.Messages;
import com.salesforce.dataloader.exception.ProcessInitializationException;
import com.salesforce.dataloader.util.AppUtil;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

/**
 * This class gives access to the configuration of the processes and the process scheduler
 *
 * @author Alex Warshavsky
 * @since 8.0
 */
public class ProcessConfig {

    private static Logger logger = LogManager.getLogger(ProcessConfig.class);

    public final static String DEFAULT_CONFIG_FILENAME = "process-conf.xml";
    private final static String DEFAULT_SCHEDULER_FACTORY_NAME = "schedulerFactory";
    private static ApplicationContext configFactory;

    public ProcessConfig() {
    }

    private static String getConfigFileLocation() {
        File confFile = new File(AppUtil.getConfigurationsDir(), DEFAULT_CONFIG_FILENAME);
        return confFile.getAbsolutePath();
    }

    public static Object getSchedulerInstance() {
        return getBeanFactory().getBean(DEFAULT_SCHEDULER_FACTORY_NAME);
    }

    public static ProcessRunner getProcessInstance(String processName) throws ProcessInitializationException {
        try {
            return (ProcessRunner)getBeanFactory().getBean(processName);
        } catch (Exception e) {
            String errMsg = Messages.getFormattedString("ProcessConfig.errorNoProcess", new String[] {processName, getConfigFileLocation()});
            logger.error(errMsg, e);
            throw new ProcessInitializationException(errMsg, e);
        }
    }

    public static synchronized ApplicationContext getBeanFactory() {
        if (configFactory == null) {
            String configFileLocation = getConfigFileLocation();
            logger.info(Messages.getFormattedString("ProcessConfig.loadingConfig", configFileLocation));

            //don't modify window local file system paths or URIs
            if (!configFileLocation.contains(":")){
                configFileLocation = "file://".concat(configFileLocation);
            }

            configFactory = new FileSystemXmlApplicationContext(configFileLocation);
        }
        return configFactory;
    }
}
