//! Helpers for reporting Arti errors via HTTP protocols.

use super::ErrorKind;

use http::StatusCode;

impl ErrorKind {

    /// Return an HTTP status code corresponding to this `ErrorKind`.

    ///

    /// These HTTP status codes are used by Arti in reply to client requests

    /// on the HTTP CONNECT proxy port.

    ///

    /// The specific status code for a given ErrorKind is _not_ formally specified.

    /// As such, it is okay to change them to be more appropriate.

    /// These codes are not guaranteed to be the same across different versions of `tor-error`.

    //

    // NOTE: One reason this method is in `tor-error` is to ensure that the match can remain

    // exhaustive.  Don't add a `_ =>` at the end!

        use ErrorKind as EK;

        use http::StatusCode as SC;

            EK::ArtiShuttingDown

            | EK::BadApiUsage

            | EK::BootstrapRequired

            | EK::CacheAccessFailed

            | EK::CacheCorrupted

            | EK::ClockSkew

            | EK::DirectoryExpired

            | EK::ExternalToolFailed

            | EK::FsPermissions

            | EK::Internal

            | EK::InvalidConfig

            | EK::InvalidConfigTransition

            | EK::KeystoreAccessFailed

            | EK::KeystoreCorrupted

            | EK::NoHomeDirectory

            | EK::Other

            | EK::PersistentStateAccessFailed

            | EK::PersistentStateCorrupted

            | EK::SoftwareDeprecated

            | EK::TorDirectoryUnusable

            | EK::TransientFailure

            | EK::ReactorShuttingDown

            | EK::RelayIdMismatch

            | EK::RelayTooBusy

            | EK::TorAccessFailed

            EK::CircuitCollapse

            | EK::CircuitRefused

            | EK::ExitPolicyRejected

            | EK::LocalNetworkError

            | EK::LocalProtocolViolation

            | EK::LocalResourceAlreadyInUse

            | EK::LocalResourceExhausted

            | EK::NoExit

            EK::TorProtocolViolation | EK::RemoteProtocolViolation | EK::RemoteNetworkFailed => {

            }

            EK::ExitTimeout | EK::TorNetworkTimeout | EK::RemoteNetworkTimeout => {

            }

            EK::OnionServiceConnectionFailed

            | EK::OnionServiceMissingClientAuth

            | EK::OnionServiceNotFound

            | EK::OnionServiceNotRunning

            EK::RemoteConnectionRefused

            | EK::RemoteHostNotFound

            | EK::RemoteHostResolutionFailed

            | EK::RemoteStreamClosed

            | EK::RemoteStreamError

            //

            // NOTE: Do not add a `_ =>` catch-all here; see NOTE above.

        }

}