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/*
 * Copyright 2012-2023 CodeLibs Project and the Others.
 *
 * Licensed 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.codelibs.fess.script.ognl;

import java.util.HashMap;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.exception.JobProcessingException;
import org.codelibs.fess.script.AbstractScriptEngine;
import org.lastaflute.di.core.factory.SingletonLaContainerFactory;

import ognl.Ognl;

public class OgnlEngine extends AbstractScriptEngine {
    private static final Logger logger = LogManager.getLogger(OgnlEngine.class);

    @Override
    public Object evaluate(final String template, final Map paramMap) {
        if (StringUtil.isBlank(template)) {
            return null;
        }
        final Map bindingMap = new HashMap<>(paramMap);
        bindingMap.put("container", SingletonLaContainerFactory.getContainer());
        try {
            final Object exp = Ognl.parseExpression(template);
            return Ognl.getValue(exp, bindingMap);
        } catch (final JobProcessingException e) {
            throw e;
        } catch (final Exception e) {
            logger.warn("Failed to evalue groovy script: {} => {}", template, paramMap, e);
            return null;
        }
    }

    @Override
    protected String getName() {
        return "ognl";
    }

}