content: /*
   *  Copyright (c) 2023-2025, Agents-Flex (fuhai999@gmail.com).
   *  <p>
   *  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
   *  <p>
   *  http://www.apache.org/licenses/LICENSE-2.0
   *  <p>
   *  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.agentsflex.core.llm.functions;
  
  import com.agentsflex.core.convert.ConvertService;
  import com.agentsflex.core.llm.functions.annotation.FunctionDef;
  import com.agentsflex.core.llm.functions.annotation.FunctionParam;
  import org.jetbrains.annotations.NotNull;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  public class JavaNativeFunction extends BaseFunction {
  
      private Class<?> clazz;
      private Object object;
      private Method method;
  
      public Class<?> getClazz() {
          return clazz;
      }
  
      public void setClazz(Class<?> clazz) {
          this.clazz = clazz;
      }
  
      public Object getObject() {
          return object;
      }
  
      public void setObject(Object object) {
          this.object = object;
      }
  
      public Method getMethod() {
          return method;
      }
  
      public void setMethod(Method method) {
          this.method = method;
  
          FunctionDef functionDef = method.getAnnotation(FunctionDef.class);
          this.name = functionDef.name();
          this.description = functionDef.description();
  
          List<JavaNativeParameter> parameterList = new ArrayList<>();
          java.lang.reflect.Parameter[] methodParameters = method.getParameters();
          for (java.lang.reflect.Parameter methodParameter : methodParameters) {
              JavaNativeParameter parameter = getParameter(methodParameter);
              parameterList.add(parameter);
          }
          this.parameters = parameterList.toArray(new JavaNativeParameter[]{});
      }
  
      @NotNull
      private static JavaNativeParameter getParameter(java.lang.reflect.Parameter methodParameter) {
          FunctionParam functionParam = methodParameter.getAnnotation(FunctionParam.class);
          JavaNativeParameter parameter = new JavaNativeParameter();
          parameter.setName(functionParam.name());
          parameter.setDescription(functionParam.description());
          parameter.setType(methodParameter.getType().getSimpleName().toLowerCase());
          parameter.setTypeClass(methodParameter.getType());
          parameter.setRequired(functionParam.required());
          parameter.setEnums(functionParam.enums());
          return parameter;
      }
  
      public Object invoke(Map<String, Object> argsMap) {
          try {
              Object[] args = new Object[this.parameters.length];
              for (int i = 0; i < this.parameters.length; i++) {
                  JavaNativeParameter parameter = (JavaNativeParameter) this.parameters[i];
                  Object value = argsMap.get(parameter.getName());
                  args[i] = ConvertService.convert(value, parameter.getTypeClass());
              }
              return method.invoke(object, args);
          } catch (IllegalAccessException | InvocationTargetException e) {
              throw new RuntimeException(e);
          }
      }
  }
  