content: /*
   * Copyright 2024-2025 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.exception;
  
  import static java.lang.String.format;
  
  /**
   * Enum representing various error messages related to graph state.
   */
  public enum Errors {
  
  	invalidNodeIdentifier("END is not a valid node id!"), invalidEdgeIdentifier("END is not a valid edge sourceId!"),
  	duplicateNodeError("node with id: %s already exist!"), duplicateEdgeError("edge with id: %s already exist!"),
  	duplicateConditionalEdgeError("conditional edge from '%s' already exist!"),
  	edgeMappingIsEmpty("edge mapping is empty!"), missingEntryPoint("missing Entry Point"),
  	entryPointNotExist("entryPoint: %s doesn't exist!"), finishPointNotExist("finishPoint: %s doesn't exist!"),
  	missingNodeReferencedByEdge("edge sourceId '%s' refers to undefined node!"),
  	missingNodeInEdgeMapping("edge mapping for sourceId: %s contains a not existent nodeId %s!"),
  	invalidEdgeTarget("edge sourceId: %s has an initialized target value!"),
  	duplicateEdgeTargetError("edge [%s] has duplicate targets %s!"),
  	unsupportedConditionalEdgeOnParallelNode(
  			"parallel node doesn't support conditional branch, but on [%s] a conditional branch on %s have been found!"),
  	illegalMultipleTargetsOnParallelNode("parallel node [%s] must have only one target, but %s have been found!"),
  	interruptionNodeNotExist("node '%s' configured as interruption doesn't exist!");
  
  	private final String errorMessage;
  
  	Errors(String errorMessage) {
  		this.errorMessage = errorMessage;
  	}
  
  	/**
  	 * Creates a new GraphStateException with the formatted error message.
  	 * @param args the arguments to format the error message
  	 * @return a new GraphStateException
  	 */
  	public GraphStateException exception(Object... args) {
  		return new GraphStateException(format(errorMessage, (Object[]) args));
  	}
  
  }
  