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use rsb_derive::Builder; use std::error::Error; use std::fmt::Display; use std::fmt::Formatter; #[derive(Debug)] pub enum SlackClientError { ApiError(SlackClientApiError), HttpError(SlackClientHttpError), EndOfStream(SlackClientEndOfStreamError), SystemError(SlackClientSystemError), ProtocolError(SlackClientProtocolError), } impl SlackClientError { fn option_to_string<T: ToString>(value: &Option<T>) -> String { value .as_ref() .map_or_else(|| "-".to_string(), |v| v.to_string()) } } impl Display for SlackClientError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { match *self { SlackClientError::ApiError(ref err) => err.fmt(f), SlackClientError::HttpError(ref err) => err.fmt(f), SlackClientError::EndOfStream(ref err) => err.fmt(f), SlackClientError::ProtocolError(ref err) => err.fmt(f), SlackClientError::SystemError(ref err) => err.fmt(f), } } } impl Error for SlackClientError { fn cause(&self) -> Option<&dyn Error> { match *self { SlackClientError::ApiError(ref err) => Some(err), SlackClientError::HttpError(ref err) => Some(err), SlackClientError::EndOfStream(ref err) => Some(err), SlackClientError::ProtocolError(ref err) => Some(err), SlackClientError::SystemError(ref err) => Some(err), } } } #[derive(Debug, PartialEq, Clone, Builder)] pub struct SlackClientApiError { pub code: String, pub warnings: Option<Vec<String>>, pub http_response_body: Option<String>, } impl Display for SlackClientApiError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { write!( f, "Slack API error: {}\nBody: '{}'", self.code, SlackClientError::option_to_string(&self.http_response_body) ) } } impl Error for SlackClientApiError {} #[derive(Debug, PartialEq, Clone, Builder)] pub struct SlackClientHttpError { pub status_code: u16, pub http_response_body: Option<String>, } impl Display for SlackClientHttpError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { write!(f, "Slack HTTP error: {}", self) } } impl std::error::Error for SlackClientHttpError {} #[derive(Debug, PartialEq, Clone, Builder)] pub struct SlackClientEndOfStreamError {} impl Display for SlackClientEndOfStreamError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { write!(f, "Slack end of stream error") } } impl std::error::Error for SlackClientEndOfStreamError {} #[derive(Debug)] pub struct SlackClientProtocolError { pub json_error: serde_json::Error, pub http_response_body: String, } impl Display for SlackClientProtocolError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { write!(f, "Slack protocol error: {}", self) } } impl std::error::Error for SlackClientProtocolError {} #[derive(Debug, PartialEq, Clone, Builder)] pub struct SlackClientSystemError { message: String, } impl Display for SlackClientSystemError { fn fmt(&self, f: &mut Formatter) -> std::fmt::Result { write!( f, "Slack system/unexpected protocol error: {}", self.message ) } } impl std::error::Error for SlackClientSystemError {}