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use reqwest::{
Error as ReqwestError,
header::InvalidHeaderValue,
Response,
UrlError
};
use std::{
error::Error as StdError,
fmt::{
Display,
Formatter,
Result as FmtResult
}
};
#[derive(Debug)]
pub enum Error {
/// When a non-successful status code was received for a request.
UnsuccessfulRequest(Response),
/// When the decoding of a ratelimit header could not be properly decoded
/// into an `i64`.
RateLimitI64,
/// When the decoding of a ratelimit header could not be properly decoded
/// from UTF-8.
RateLimitUtf8,
/// When parsing an URL failed due to invalid input.
Url(UrlError),
/// Header value contains invalid input.
InvalidHeader(InvalidHeaderValue),
/// Reqwest's Error contain information on why sending a request failed.
Request(ReqwestError),
}
impl From<ReqwestError> for Error {
fn from(error: ReqwestError) -> Error {
Error::Request(error)
}
}
impl From<UrlError> for Error {
fn from(error: UrlError) -> Error {
Error::Url(error)
}
}
impl From<InvalidHeaderValue> for Error {
fn from(error: InvalidHeaderValue) -> Error {
Error::InvalidHeader(error)
}
}
impl Display for Error {
fn fmt(&self, f: &mut Formatter) -> FmtResult { f.write_str(self.description()) }
}
impl StdError for Error {
fn description(&self) -> &str {
match *self {
Error::UnsuccessfulRequest(_) => "A non-successful response status code was received",
Error::RateLimitI64 => "Error decoding a header into an i64",
Error::RateLimitUtf8 => "Error decoding a header from UTF-8",
Error::Url(_) => "Provided URL is incorrect.",
Error::InvalidHeader(_) => "Provided value is an invalid header value.",
Error::Request(_) => "Error while sending HTTP request.",
}
}
}
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