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use axum::extract::ws::Message;
use polysig_protocol::{MeetingId, SessionId};
use std::path::PathBuf;
use thiserror::Error;
/// Errors generated by the relay server.
#[derive(Debug, Error)]
pub enum Error {
/// Error generated when a file is expected.
#[error(r#"not a file "{0}""#)]
NotFile(PathBuf),
/// Error generated when permission is denied.
#[error("permission denied")]
PermissionDenied,
/// Error generated when the config server key file was not specified.
#[error("server config requires path to a key file")]
KeyFileRequired,
/// Error generated when the config server key file was not found.
#[error(r#"key file "{0}" not found"#)]
KeyNotFound(PathBuf),
/// Error generated attempting to handshake with a peer that
/// already exists.
#[error("peer already exists")]
PeerAlreadyExists,
/// Error generated when a peer could not be found.
#[error(r#"peer "{0}" not found "#)]
PeerNotFound(String),
/// Error generated when a file does not have a parent directory.
#[error("no parent directory")]
NoParentDir,
/// Error generated when a participant expects to be in the handshake
/// protocol state.
#[error("not handshake protocol state")]
NotHandshakeState,
/// Error generated when a meeting could not be found.
#[error(r#"meeting "{0}" not found"#)]
MeetingNotFound(MeetingId),
/// Error generated when a participant attempts to join a meeting
/// that is full.
#[error(r#"meeting "{0}" is full"#)]
MeetingFull(MeetingId),
/// Error generated when a session could not be found.
#[error(r#"session "{0}" not found"#)]
SessionNotFound(SessionId),
/// Error generated attempting to relay to a peer in the context
/// of a session but the target peer is not a session participant.
#[error(r#"session "{0}" does not have participant "{1}""#)]
NotSessionParticipant(SessionId, String),
/// Error generated when the session timeout is not greater
/// than the interval.
#[error("session timeout must be greater than the interval")]
SessionTimeoutConfig,
/// Error generated when the session wait timeout is not greater
/// than the wait interval.
#[error(
"session wait timeout must be greater than the wait interval"
)]
SessionWaitConfig,
/// Error generated by input/output.
#[error(transparent)]
Io(#[from] std::io::Error),
/// Error generated by the protocol library.
#[error(transparent)]
Protocol(#[from] polysig_protocol::Error),
/// Error generated by the web server library.
#[error(transparent)]
Axum(#[from] axum::Error),
/// Error generated by the noise protocol library.
#[error(transparent)]
Snow(#[from] polysig_protocol::snow::error::Error),
/// Error generated parsing TOML.
#[error(transparent)]
Toml(#[from] toml::de::Error),
/// Error generated when a header value is invalid.
#[error(transparent)]
HeaderValue(#[from] axum::http::header::InvalidHeaderValue),
/// Error generated sending a buffer over a channel.
#[error(transparent)]
BufferMpscSend(
#[from] tokio::sync::mpsc::error::SendError<Vec<u8>>,
),
/// Error generated sending a message over a channel.
#[error(transparent)]
MessageMpscSend(
#[from] tokio::sync::mpsc::error::SendError<Message>,
),
}