patisson-binance-sdk 0.1.8

use serde::Deserialize;

// Numeric error codes are universal across Binance products; the type lives
// at the crate root. Re-exported here so `binance::spot::ErrorCode` resolves.
pub use crate::ErrorCode;

#[derive(Debug)]
pub enum Error {
    Api(ApiError),
    Io(std::io::Error),
    Msg(String),
    Reqwest(reqwest::Error),
    SerdeJson(serde_json::Error),
    SerdeUrlEncoded(serde_urlencoded::ser::Error),
    SerdePathToError(serde_path_to_error::Error<serde_json::Error>),
}

impl std::fmt::Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Error::Api(error) => write!(f, "API error: code: {}, msg: {}", error.code, error.msg),
            Error::Io(error) => write!(f, "I/O error: {error}"),
            Error::Msg(msg) => write!(f, "{msg}"),
            Error::Reqwest(error) => write!(f, "reqwest error: {error}"),
            Error::SerdeJson(error) => write!(f, "serde_json error: {error}"),
            Error::SerdeUrlEncoded(error) => write!(f, "serde_urlencoded error: {error}"),
            Error::SerdePathToError(error) => write!(
                f,
                "serde_path_to_error error: path: {}, msg: {}",
                error.path(),
                error.inner()
            ),
        }
    }
}

impl std::error::Error for Error {}

#[derive(Debug, Deserialize, PartialEq)]
pub struct ApiError {
    pub code: ErrorCode,
    pub msg: String,
}

impl From<ApiError> for Error {
    fn from(err: ApiError) -> Self {
        Error::Api(err)
    }
}

impl From<std::io::Error> for Error {
    fn from(err: std::io::Error) -> Self {
        Error::Io(err)
    }
}

impl From<String> for Error {
    fn from(msg: String) -> Self {
        Error::Msg(msg)
    }
}

impl From<&str> for Error {
    fn from(msg: &str) -> Self {
        Error::Msg(msg.to_string())
    }
}

impl From<reqwest::Error> for Error {
    fn from(err: reqwest::Error) -> Self {
        Error::Reqwest(err)
    }
}

impl From<serde_json::Error> for Error {
    fn from(err: serde_json::Error) -> Self {
        Error::SerdeJson(err)
    }
}

impl From<serde_urlencoded::ser::Error> for Error {
    fn from(err: serde_urlencoded::ser::Error) -> Self {
        Error::SerdeUrlEncoded(err)
    }
}

impl From<serde_path_to_error::Error<serde_json::Error>> for Error {
    fn from(err: serde_path_to_error::Error<serde_json::Error>) -> Self {
        Error::SerdePathToError(err)
    }
}

#[cfg(test)]
mod tests {
    use crate::serde::deserialize_json;

    use super::*;

    #[test]
    fn deserialize_api_error_from_wire_format() {
        let json = r#"{"code":-1102,"msg":"Param 'origClientOrderId' or 'orderId' must be sent, but both were empty/null!"}"#;
        let parsed: ApiError = deserialize_json(json).unwrap();
        assert_eq!(parsed.code, ErrorCode::MANDATORY_PARAM_EMPTY_OR_MALFORMED);
        assert!(parsed.code.is_bad_request());
    }
}