// 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.

// Adapted from mistral.rs
//
// MIT License
//
// Copyright (c) 2025 Eric Buehler
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// SOFTWARE.

mod content;
mod gguf_metadata;
mod gguf_tokenizer;
use strum::EnumString;

use anyhow::{Context, Result};
pub(crate) use content::Content;
pub(crate) use gguf_metadata::ContentConfig;
pub(crate) use gguf_tokenizer::convert_gguf_to_hf_tokenizer;

use std::str::FromStr;

pub const GGUF_MULTI_FILE_DELIMITER: &str = " ";

#[derive(Debug, EnumString, Clone, Copy, strum::Display)]
#[strum(serialize_all = "lowercase")]
pub enum GGUFArchitecture {
    Llama,
    Mpt,
    Gptneox,
    Gptj,
    Gpt2,
    Bloom,
    Falcon,
    Mamba,
    Rwkv,
    Phi2,
    Phi3,
    Starcoder2,
    Qwen2,
}

// Wraps from_str() for some convenience:
// - Case-insensitive variant matching (TODO: is this desirable?)
// - Customized error until potential upstream support: https://github.com/Peternator7/strum/issues/332
impl GGUFArchitecture {
    pub fn from_value<T: AsRef<str> + std::fmt::Display>(value: T) -> Result<Self> {
        Self::from_str(&value.as_ref().to_ascii_lowercase())
            .with_context(|| format!("Unknown GGUF architecture `{value}`"))
            .map_err(anyhow::Error::msg)
    }
}
