///*
// * Copyright 2024-2026 the original author or authors.
// *
// * 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
// *
// *      https://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 com.alibaba.cloud.ai.graph.node;
//
//import com.alibaba.cloud.ai.graph.OverAllState;
//import com.alibaba.cloud.ai.graph.action.NodeAction;
//import com.alibaba.cloud.ai.graph.exception.GraphRunnerException;
//import com.alibaba.cloud.ai.graph.exception.RunnableErrors;
//
//import java.util.Map;
//import java.util.function.Function;
//import java.util.stream.Collectors;
//
//public class HumanNode implements NodeAction {
//
//	// always or conditioned
//	private String interruptStrategy;
//
//	private Function<OverAllState, Boolean> interruptCondition;
//
//	private Function<OverAllState, Map<String, Object>> stateUpdateFunc;
//
//	public HumanNode() {
//		this.interruptStrategy = "always";
//	}
//
//	public HumanNode(String interruptStrategy, Function<OverAllState, Boolean> interruptCondition) {
//		this.interruptStrategy = interruptStrategy;
//		this.interruptCondition = interruptCondition;
//	}
//
//	public HumanNode(String interruptStrategy, Function<OverAllState, Boolean> interruptCondition,
//			Function<OverAllState, Map<String, Object>> stateUpdateFunc) {
//		this.interruptStrategy = interruptStrategy;
//		this.interruptCondition = interruptCondition;
//		this.stateUpdateFunc = stateUpdateFunc;
//	}
//
//	//
//	@Override
//	public Map<String, Object> apply(OverAllState state) throws GraphRunnerException {
//		var shouldInterrupt = interruptStrategy.equals("always")
//				|| (interruptStrategy.equals("conditioned") && interruptCondition.apply(state));
//		if (shouldInterrupt) {
//			interrupt(state);
//			Map<String, Object> data = Map.of();
//			if (state.humanFeedback() != null) {
//				if (stateUpdateFunc != null) {
//					data = stateUpdateFunc.apply(state);
//				}
//				else {
//					// check and only update keys defined in state.
//					data = state.humanFeedback().data();
//					Map<String, Object> filtered = data.entrySet()
//						.stream()
//						.filter(e -> state.value(e.getKey()).isPresent())
//						.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
//					data = state.updateState(filtered);
//				}
//			}
//
//			state.withoutResume();
//			return data;
//		}
//		return Map.of();
//	}
//
//	private void interrupt(OverAllState state) throws GraphRunnerException {
//		if (state.humanFeedback() == null || !state.isResume()) {
//			throw RunnableErrors.subGraphInterrupt.exception("interrupt");
//		}
//	}
//
//	public String think(OverAllState state) {
//		return state.humanFeedback().nextNodeId();
//	}
//
//	public static Builder builder() {
//		return new Builder();
//	}
//
//	public static class Builder {
//
//		private String interruptStrategy = "always";
//
//		private Function<OverAllState, Boolean> interruptCondition = state -> true;
//
//		private Function<OverAllState, Map<String, Object>> stateUpdateFunc = null;
//
//		public Builder interruptStrategy(String interruptStrategy) {
//			this.interruptStrategy = interruptStrategy;
//			return this;
//		}
//
//		public Builder interruptCondition(Function<OverAllState, Boolean> interruptCondition) {
//			this.interruptCondition = interruptCondition;
//			return this;
//		}
//
//		public Builder stateUpdateFunc(Function<OverAllState, Map<String, Object>> stateUpdateFunc) {
//			this.stateUpdateFunc = stateUpdateFunc;
//			return this;
//		}
//
//		public HumanNode build() {
//			return new HumanNode(interruptStrategy, interruptCondition, stateUpdateFunc);
//		}
//
//	}
//
//}
