/**
 *
 */
package de.intevation.gnv.utils;

import org.apache.commons.validator.GenericValidator;
import org.apache.log4j.Logger;

import de.intevation.gnv.geobackend.util.DateUtils;

/**
 * @author Tim Englich <tim.englich@intevation.de>
 * 
 */
public class InputValidator {
    /**
     * the logger, used to log exceptions and additonaly information
     */
    private static Logger log = Logger.getLogger(InputValidator.class);

    /**
     * Constructor
     */
    public InputValidator() {
        super();
    }

    public boolean isInputValid(String input, String type) {
        log.debug("InputValidator.isInputValid " + input + " " + type);
        boolean returnValue = false;
        String[] values = input.split(",");
        for (int i = 0; i < values.length; i++) {
            boolean valid;
            if ("Integer".equalsIgnoreCase(type)) {
                valid = GenericValidator.isInt(values[i].trim());
            } else if ("Double".equalsIgnoreCase(type)) {
                valid = GenericValidator.isDouble(values[i].trim());
            } else if ("String".equalsIgnoreCase(type)) {
                valid = GenericValidator.matchRegexp(values[i], "[a-zA-Z0-9]"); // TODO:
                                                                                // FIXME:
                                                                                // VALIDATE
                                                                                // REGEXP
            } else if ("Date".equalsIgnoreCase(type)) {
                valid = GenericValidator.isDate(values[i].trim(),
                        DateUtils.DATE_PATTERN, true);
            } else if ("Point".equalsIgnoreCase(type)) {
                valid = GenericValidator.matchRegexp(values[i], "[0-9]"); // TODO:
                                                                          // FIXME:
                                                                          // VALIDATE
                                                                          // REGEXP
            } else if ("AttributeName".equalsIgnoreCase(type)) {
                valid = org.apache.commons.validator.GenericValidator
                        .matchRegexp(values[i], "[a-zA-Z0-9]"); // TODO: FIXME:
                                                                // VALIDATE
                                                                // REGEXP
            } else {
                valid = false;
            }
            if (!valid) {
                returnValue = false;
                break;
            } else {
                returnValue = true;
            }
        }
        log.debug("Is valid? " + returnValue);
        return returnValue;
    }

}