/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.groups.pags.testers;

import org.apache.commons.lang.StringUtils;
import org.apereo.portal.groups.pags.dao.IPersonAttributesGroupTestDefinition;
import org.apereo.portal.properties.PropertiesManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A tester for matching the possibly multiple values of an attribute against a regular expression
 * obtained from a property value specified in portal.properties. The match function attempts to
 * match the entire region against the pattern specified. <br>
 * See {@link org.apereo.portal.groups.pags.testers.RegexTester} for regex examples.
 *
 * @see org.apereo.portal.groups.pags.testers.RegexTester for expression examples
 */
public class PropertyRegexTester extends RegexTester {
    private Logger logger = LoggerFactory.getLogger(this.getClass());

    /** @since 4.3 */
    public PropertyRegexTester(IPersonAttributesGroupTestDefinition definition) {
        super(definition);
        setPattern(definition.getAttributeName(), definition.getTestValue());
    }

    @Override
    public boolean test(String att) {
        return pattern.matcher(att).matches();
    }

    private void setPattern(String attribute, String propertyName) {
        String regexExpression = PropertiesManager.getProperty(propertyName, "");
        if (StringUtils.isBlank(regexExpression)) {
            logger.error(
                    "Unable to find property name {} in portal.properties or has empty value."
                            + " PAGS PropertyRegexTester will always return false for attribute {}",
                    propertyName,
                    attribute);
        }
        setPattern(regexExpression);
    }

}