content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.acme.extraction;
  
  import dev.langchain4j.service.AiServices;
  import dev.langchain4j.service.tool.ToolProvider;
  import org.acme.extraction.CustomPojoExtractionService.CustomPojo;
  import org.apache.camel.component.langchain4j.agent.api.Agent;
  import org.apache.camel.component.langchain4j.agent.api.AgentConfiguration;
  import org.apache.camel.component.langchain4j.agent.api.AiAgentBody;
  
  /**
   * Custom agent to extract data from text.
   */
  public class DataExtractAgent implements Agent {
      public static final String DATE_FORMAT = "YYYY-MM-DD";
      private final AgentConfiguration configuration;
      private final CustomPojoStore pojoStore;
  
      public DataExtractAgent(
              AgentConfiguration configuration,
              CustomPojoStore pojoStore) {
          this.configuration = configuration;
          this.pojoStore = pojoStore;
      }
  
      /**
       * Returns a JSON representation of a {@link CustomPojo}.
       */
      @Override
      public String chat(AiAgentBody aiAgentBody, ToolProvider toolProvider) {
          CustomPojo response = createService(toolProvider).extractFromText(aiAgentBody.getUserMessage(), DATE_FORMAT);
  
          // Store extracted CustomPojoExtractionService.CustomPojos objects into the CustomPojoStore for later inspection
          pojoStore.addPojo(response);
  
          // Return a string representation of the result POJO
          return response.toString();
      }
  
      CustomPojoExtractionService createService(ToolProvider toolProvider) {
          var builder = AiServices.builder(CustomPojoExtractionService.class)
                  .chatModel(configuration.getChatModel());
  
          if (toolProvider != null) {
              builder.toolProvider(toolProvider);
          }
  
          return builder.build();
      }
  }
  