001/**
002 * Copyright (c) 2025-2026, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the GNU Lesser General Public License (LGPL) ,Version 3.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.gnu.org/licenses/lgpl-3.0.txt
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package dev.tinyflow.core.code;
017
018import dev.tinyflow.core.chain.Chain;
019import dev.tinyflow.core.node.CodeNode;
020import groovy.lang.Binding;
021import groovy.lang.GroovyShell;
022
023import java.util.HashMap;
024import java.util.Map;
025
026public class GroovyRuntimeEngine implements CodeRuntimeEngine {
027    @Override
028    public Map<String, Object> execute(String code, CodeNode node, Chain chain) {
029        Binding binding = new Binding();
030
031        Map<String, Object> parameterValues = chain.getState().resolveParameters(node);
032        if (parameterValues != null) {
033            parameterValues.forEach(binding::setVariable);
034        }
035
036        Map<String, Object> result = new HashMap<>();
037        binding.setVariable("_result", result);
038        binding.setVariable("_chain", chain);
039        binding.setVariable("_state", chain.getNodeState(node.getId()));
040
041        GroovyShell shell = new GroovyShell(binding);
042        shell.evaluate(code);
043        return result;
044    }
045}