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pub use crate::http_impl::WasiHttpViewExt;
pub use crate::types::{WasiHttpCtx, WasiHttpView};
use core::fmt::Formatter;
use std::fmt::{self, Display};

pub mod component_impl;
pub mod http_impl;
pub mod incoming_handler;
pub mod proxy;
pub mod types;
pub mod types_impl;

pub mod bindings {
    #[cfg(feature = "sync")]
    pub mod sync {
        pub(crate) mod _internal {
            wasmtime::component::bindgen!({
                path: "wit",
                interfaces: "
                    import wasi:http/incoming-handler
                    import wasi:http/outgoing-handler
                    import wasi:http/types
                ",
                tracing: true,
                with: {
                    "wasi:io/streams": wasmtime_wasi::preview2::bindings::sync_io::io::streams,
                    "wasi:poll/poll": wasmtime_wasi::preview2::bindings::sync_io::poll::poll,
                }
            });
        }
        pub use self::_internal::wasi::http;
    }

    pub(crate) mod _internal_rest {
        wasmtime::component::bindgen!({
            path: "wit",
            interfaces: "
                import wasi:http/incoming-handler
                import wasi:http/outgoing-handler
                import wasi:http/types
            ",
            tracing: true,
            async: true,
            with: {
                "wasi:io/streams": wasmtime_wasi::preview2::bindings::io::streams,
                "wasi:poll/poll": wasmtime_wasi::preview2::bindings::poll::poll,
            }
        });
    }

    pub use self::_internal_rest::wasi::http;
}

pub fn add_to_linker<T: WasiHttpView>(linker: &mut wasmtime::Linker<T>) -> anyhow::Result<()> {
    crate::component_impl::add_component_to_linker::<T>(linker, |t| t)
}

pub mod sync {
    use crate::types::WasiHttpView;

    pub fn add_to_linker<T: WasiHttpView>(linker: &mut wasmtime::Linker<T>) -> anyhow::Result<()> {
        crate::component_impl::sync::add_component_to_linker::<T>(linker, |t| t)
    }
}

impl std::error::Error for crate::bindings::http::types::Error {}

impl Display for crate::bindings::http::types::Error {
    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
        match self {
            crate::bindings::http::types::Error::InvalidUrl(m) => {
                write!(f, "[InvalidUrl] {}", m)
            }
            crate::bindings::http::types::Error::ProtocolError(m) => {
                write!(f, "[ProtocolError] {}", m)
            }
            crate::bindings::http::types::Error::TimeoutError(m) => {
                write!(f, "[TimeoutError] {}", m)
            }
            crate::bindings::http::types::Error::UnexpectedError(m) => {
                write!(f, "[UnexpectedError] {}", m)
            }
        }
    }
}

impl From<wasmtime_wasi::preview2::TableError> for crate::bindings::http::types::Error {
    fn from(err: wasmtime_wasi::preview2::TableError) -> Self {
        Self::UnexpectedError(err.to_string())
    }
}

impl From<anyhow::Error> for crate::bindings::http::types::Error {
    fn from(err: anyhow::Error) -> Self {
        Self::UnexpectedError(err.to_string())
    }
}

impl From<std::io::Error> for crate::bindings::http::types::Error {
    fn from(err: std::io::Error) -> Self {
        let message = err.to_string();
        match err.kind() {
            std::io::ErrorKind::InvalidInput => Self::InvalidUrl(message),
            std::io::ErrorKind::AddrNotAvailable => Self::InvalidUrl(message),
            _ => {
                if message.starts_with("failed to lookup address information") {
                    Self::InvalidUrl("invalid dnsname".to_string())
                } else {
                    Self::ProtocolError(message)
                }
            }
        }
    }
}

impl From<http::Error> for crate::bindings::http::types::Error {
    fn from(err: http::Error) -> Self {
        Self::InvalidUrl(err.to_string())
    }
}

impl From<hyper::Error> for crate::bindings::http::types::Error {
    fn from(err: hyper::Error) -> Self {
        let message = err.message().to_string();
        if err.is_timeout() {
            Self::TimeoutError(message)
        } else if err.is_parse_status() || err.is_user() {
            Self::InvalidUrl(message)
        } else if err.is_body_write_aborted()
            || err.is_canceled()
            || err.is_closed()
            || err.is_incomplete_message()
            || err.is_parse()
        {
            Self::ProtocolError(message)
        } else {
            Self::UnexpectedError(message)
        }
    }
}

impl From<tokio::time::error::Elapsed> for crate::bindings::http::types::Error {
    fn from(err: tokio::time::error::Elapsed) -> Self {
        Self::TimeoutError(err.to_string())
    }
}

#[cfg(not(any(target_arch = "riscv64", target_arch = "s390x")))]
impl From<rustls::client::InvalidDnsNameError> for crate::bindings::http::types::Error {
    fn from(_err: rustls::client::InvalidDnsNameError) -> Self {
        Self::InvalidUrl("invalid dnsname".to_string())
    }
}