// SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
//
// 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
//
// 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.

use std::collections::HashMap;

use serde_json::Value;

#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
pub enum ToolType {
    #[serde(rename = "function")]
    Function,
}

#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
pub enum ToolChoice {
    #[serde(rename = "none")]
    /// Disallow selection of tools.
    None,
    #[serde(rename = "auto")]
    /// Allow automatic selection of any given tool, or none.
    Auto,
    #[serde(untagged)]
    /// Force selection of a given tool.
    Tool(Tool),
}

#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
pub struct Function {
    pub description: Option<String>,
    pub name: String,
    pub parameters: Option<HashMap<String, Value>>,
}

#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
pub struct Tool {
    #[serde(rename = "type")]
    pub tp: ToolType,
    pub function: Function,
}