// -------------------------------------------------------------------------------------------------
//  Copyright (C) 2015-2025 Nautech Systems Pty Ltd. All rights reserved.
//  https://nautechsystems.io
//
//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
//  You may not use this file except in compliance with the License.
//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
//
//  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.
// -------------------------------------------------------------------------------------------------

//! Python bindings from [PyO3](https://pyo3.rs).

// We need to allow `unexpected_cfgs` because the PyO3 macros internally check for
// the `gil-refs` feature. We don’t define or enable `gil-refs` ourselves (due to a
// memory leak), so the compiler raises an error about an unknown cfg feature.
// This attribute prevents those errors without actually enabling `gil-refs`.
#![allow(unexpected_cfgs)]

pub mod http;
pub mod socket;
pub mod websocket;

use std::num::NonZeroU32;

use pyo3::{PyTypeCheck, exceptions::PyException, prelude::*};

use crate::{
    python::{
        http::{HttpError, HttpTimeoutError},
        websocket::WebSocketClientError,
    },
    ratelimiter::quota::Quota,
};

#[pymethods]
impl Quota {
    /// Construct a quota for a number of requests per second.
    ///
    /// # Errors
    ///
    /// Returns a `PyErr` if the max burst capacity is 0
    #[staticmethod]
    pub fn rate_per_second(max_burst: u32) -> PyResult<Self> {
        match NonZeroU32::new(max_burst) {
            Some(max_burst) => Ok(Self::per_second(max_burst)),
            None => Err(PyErr::new::<PyException, _>(
                "Max burst capacity should be a non-zero integer",
            )),
        }
    }

    /// Construct a quota for a number of requests per minute.
    ///
    /// # Errors
    ///
    /// Returns a `PyErr` if the max burst capacity is 0
    #[staticmethod]
    pub fn rate_per_minute(max_burst: u32) -> PyResult<Self> {
        match NonZeroU32::new(max_burst) {
            Some(max_burst) => Ok(Self::per_minute(max_burst)),
            None => Err(PyErr::new::<PyException, _>(
                "Max burst capacity should be a non-zero integer",
            )),
        }
    }

    /// Construct a quota for a number of requests per hour.
    ///
    /// # Errors
    ///
    /// Returns a `PyErr` if the max burst capacity is 0
    #[staticmethod]
    pub fn rate_per_hour(max_burst: u32) -> PyResult<Self> {
        match NonZeroU32::new(max_burst) {
            Some(max_burst) => Ok(Self::per_hour(max_burst)),
            None => Err(PyErr::new::<PyException, _>(
                "Max burst capacity should be a non-zero integer",
            )),
        }
    }
}

/// Loaded as `nautilus_pyo3.network`.
///
/// # Errors
///
/// Returns a `PyErr` if registering any module components fails.
#[pymodule]
pub fn network(_: Python<'_>, m: &Bound<'_, PyModule>) -> PyResult<()> {
    m.add_class::<crate::http::HttpClient>()?;
    m.add_class::<crate::http::HttpMethod>()?;
    m.add_class::<crate::http::HttpResponse>()?;
    m.add_class::<crate::ratelimiter::quota::Quota>()?;
    m.add_class::<crate::websocket::WebSocketClient>()?;
    m.add_class::<crate::websocket::WebSocketConfig>()?;
    m.add_class::<crate::socket::SocketClient>()?;
    m.add_class::<crate::socket::SocketConfig>()?;

    // Add error classes
    m.add(
        <WebSocketClientError as PyTypeCheck>::NAME,
        m.py().get_type::<WebSocketClientError>(),
    )?;
    m.add(
        <HttpError as PyTypeCheck>::NAME,
        m.py().get_type::<HttpError>(),
    )?;
    m.add(
        <HttpTimeoutError as PyTypeCheck>::NAME,
        m.py().get_type::<HttpTimeoutError>(),
    )?;

    Ok(())
}
