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.parser.impl;
017
018import com.agentsflex.core.chain.Chain;
019import com.agentsflex.core.chain.ChainNode;
020import com.agentsflex.core.chain.Parameter;
021import com.alibaba.fastjson.JSON;
022import com.alibaba.fastjson.JSONArray;
023import com.alibaba.fastjson.JSONObject;
024import dev.tinyflow.core.Tinyflow;
025import dev.tinyflow.core.node.LoopNode;
026import dev.tinyflow.core.parser.BaseNodeParser;
027
028import java.util.List;
029
030public class LoopNodeParser extends BaseNodeParser {
031
032    @Override
033    public ChainNode parse(JSONObject nodeJSONObject, Tinyflow tinyflow) {
034        LoopNode loopNode = new LoopNode();
035        JSONObject data = getData(nodeJSONObject);
036        List<Parameter> loopVars = getParameters(data, "loopVars");
037        if (!loopVars.isEmpty()) {
038            loopNode.setLoopVar(loopVars.get(0));
039        }
040
041        String jsonString = tinyflow.getData();
042        JSONObject root = JSON.parseObject(jsonString);
043        JSONArray nodes = root.getJSONArray("nodes");
044        JSONArray edges = root.getJSONArray("edges");
045
046        Chain chain = tinyflow.getChainParser().parse(tinyflow, nodes, edges, nodeJSONObject);
047        loopNode.setLoopChain(chain);
048
049        addParameters(loopNode, data);
050        addOutputDefs(loopNode, data);
051
052        return loopNode;
053    }
054}