package at.gv.egovernment.moa.id.commons.config.cli;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.MissingOptionException;

/**
 * The result set for the parsed command line arguments
 * @author Christian Wagner
 * 
 */
public class MigrateConfigurationParams {

	private String inputFile = null;
	private String outputFile = null;
	private String inputDbConfigFile = null;
	private String outputDbConfigFile = null;

	private boolean overwriteData = false;

	/**
	 * Get the path to the input source which is MOAID 2.x config file in XML-format.
	 * @return the path to the input source or {@code null} if not set.
	 */
	public String getInputTarget() {
		return this.inputFile;
	}

	/**
	 * Get the path to the output file to write to.
	 * @return the path to the output file or {@code null} if not set.
	 */
	public String getOutputFile() {
		return outputFile;
	}
	
	/**
	 * Get the path to the configuration file for the input database.
	 * @return the path to the config file or {@code null} if not set.
	 */
	public String getInputDBConfig() {
		return inputDbConfigFile;
	}

	/**
	 * Get the path to the configuration file for the output database.
	 * @return the path to the config file or {@code null} if not set.
	 */
	public String getOutputDBConfig() {
		return outputDbConfigFile;
	}
	
	/**
	 * Returns whether the desired input is a config file for a database.
	 * @return <code>true</code> if the stored path points at a database config file; <code>false</code> otherwise.
	 */
	public boolean isInputDB() {
		return inputDbConfigFile != null;
	}

	/**
	 * Returns whether the desired output is a config file for a database.
	 * @return <code>true</code> if the stored path points at a database config file; <code>false</code> otherwise.
	 */
	public boolean isOutputDB() {
		return outputDbConfigFile != null;
	}

	/**
	 * Returns whether existing data should be overwritten by the imported data or not.
	 * @return <code>true</code> if the existing data should be overwritten; <code>false</code> otherwise.
	 */
	public boolean isOverwriteData() {
		return overwriteData;
	}

	/**
	 * 
	 * @param cmdLine
	 * @throws MissingOptionException
	 */
	public MigrateConfigurationParams(CommandLine cmdLine) throws MissingOptionException {
		inputFile = cmdLine.getOptionValue(CLIConstants.CLI_PARAM_IN);
		inputDbConfigFile = cmdLine.getOptionValue(CLIConstants.CLI_PARAM_INDB);
		outputFile = cmdLine.getOptionValue(CLIConstants.CLI_PARAM_OUT);
		outputDbConfigFile = cmdLine.getOptionValue(CLIConstants.CLI_PARAM_OUTDB);
		overwriteData = cmdLine.hasOption(CLIConstants.CLI_PARAM_FORCE);

		if (null == inputFile && null == inputDbConfigFile) {
			throw new MissingOptionException("One of [-" + CLIConstants.CLI_PARAM_IN + ", -" + CLIConstants.CLI_PARAM_INDB + "] required.");
		}

		if (null == outputFile && null == outputDbConfigFile) {
			throw new MissingOptionException("One of [-" + CLIConstants.CLI_PARAM_OUT + ", -" + CLIConstants.CLI_PARAM_OUTDB + "] required.");
		}
		
		if (null != inputFile && null != inputDbConfigFile) {
			throw new MissingOptionException("Only one of [-" + CLIConstants.CLI_PARAM_IN + ", -" + CLIConstants.CLI_PARAM_INDB + "] allowed.");
		}

		if (null != outputFile && null != outputDbConfigFile) {
			throw new MissingOptionException("Only one of [-" + CLIConstants.CLI_PARAM_OUT + ", -" + CLIConstants.CLI_PARAM_OUTDB + "] allowed.");
		}

	}

}