// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
//
// Based on https://github.com/64bit/async-openai/ by Himanshu Neema
// Original Copyright (c) 2022 Himanshu Neema
// Licensed under MIT License (see ATTRIBUTIONS-Rust.md)
//
// Modifications Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
// Licensed under Apache 2.0

use bytes::Bytes;

use crate::{
    config::Config,
    error::OpenAIError,
    types::{
        CreateSpeechRequest, CreateSpeechResponse, CreateTranscriptionRequest,
        CreateTranscriptionResponseJson, CreateTranscriptionResponseVerboseJson,
        CreateTranslationRequest, CreateTranslationResponseJson,
        CreateTranslationResponseVerboseJson,
    },
    Client,
};

/// Turn audio into text or text into audio.
/// Related guide: [Speech to text](https://platform.openai.com/docs/guides/speech-to-text)
pub struct Audio<'c, C: Config> {
    client: &'c Client<C>,
}

impl<'c, C: Config> Audio<'c, C> {
    pub fn new(client: &'c Client<C>) -> Self {
        Self { client }
    }

    /// Transcribes audio into the input language.
    #[crate::byot(
        T0 = Clone,
        R = serde::de::DeserializeOwned,
        where_clause =  "reqwest::multipart::Form: crate::traits::AsyncTryFrom<T0, Error = OpenAIError>",
    )]
    pub async fn transcribe(
        &self,
        request: CreateTranscriptionRequest,
    ) -> Result<CreateTranscriptionResponseJson, OpenAIError> {
        self.client
            .post_form("/audio/transcriptions", request)
            .await
    }

    /// Transcribes audio into the input language.
    #[crate::byot(
        T0 = Clone,
        R = serde::de::DeserializeOwned,
        where_clause =  "reqwest::multipart::Form: crate::traits::AsyncTryFrom<T0, Error = OpenAIError>",
    )]
    pub async fn transcribe_verbose_json(
        &self,
        request: CreateTranscriptionRequest,
    ) -> Result<CreateTranscriptionResponseVerboseJson, OpenAIError> {
        self.client
            .post_form("/audio/transcriptions", request)
            .await
    }

    /// Transcribes audio into the input language.
    pub async fn transcribe_raw(
        &self,
        request: CreateTranscriptionRequest,
    ) -> Result<Bytes, OpenAIError> {
        self.client
            .post_form_raw("/audio/transcriptions", request)
            .await
    }

    /// Translates audio into English.
    #[crate::byot(
        T0 = Clone,
        R = serde::de::DeserializeOwned,
        where_clause =  "reqwest::multipart::Form: crate::traits::AsyncTryFrom<T0, Error = OpenAIError>",
    )]
    pub async fn translate(
        &self,
        request: CreateTranslationRequest,
    ) -> Result<CreateTranslationResponseJson, OpenAIError> {
        self.client.post_form("/audio/translations", request).await
    }

    /// Translates audio into English.
    #[crate::byot(
        T0 = Clone,
        R = serde::de::DeserializeOwned,
        where_clause =  "reqwest::multipart::Form: crate::traits::AsyncTryFrom<T0, Error = OpenAIError>",
    )]
    pub async fn translate_verbose_json(
        &self,
        request: CreateTranslationRequest,
    ) -> Result<CreateTranslationResponseVerboseJson, OpenAIError> {
        self.client.post_form("/audio/translations", request).await
    }

    /// Transcribes audio into the input language.
    pub async fn translate_raw(
        &self,
        request: CreateTranslationRequest,
    ) -> Result<Bytes, OpenAIError> {
        self.client
            .post_form_raw("/audio/translations", request)
            .await
    }

    /// Generates audio from the input text.
    pub async fn speech(
        &self,
        request: CreateSpeechRequest,
    ) -> Result<CreateSpeechResponse, OpenAIError> {
        let bytes = self.client.post_raw("/audio/speech", request).await?;

        Ok(CreateSpeechResponse { bytes })
    }
}