/*
 *  Copyright (c) 2023-2026, Easy-Agents (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.easyagents.core.model.chat.tool;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.function.Function;

public interface Tool {

    String getName();

    String getDescription();

    Parameter[] getParameters();

    Object invoke(Map<String, Object> argsMap);

    static Tool.Builder builder() {
        return new Tool.Builder();
    }

    class Builder {
        private String name;
        private String description;
        private final List<Parameter> parameters = new ArrayList<>();
        private Function<Map<String, Object>, Object> invoker;

        public Builder name(String name) {
            this.name = name;
            return this;
        }

        public Builder description(String description) {
            this.description = description;
            return this;
        }

        public Builder addParameter(Parameter parameter) {
            this.parameters.add(parameter);
            return this;
        }

        public Builder function(Function<Map<String, Object>, Object> function) {
            this.invoker = function;
            return this;
        }

        public Tool build() {
            FunctionTool tool = new FunctionTool();
            tool.setName(name);
            tool.setDescription(description);
            tool.setParameters(parameters.toArray(new Parameter[0]));
            tool.setInvoker(invoker);
            return tool;
        }
    }
}
