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use std::string::FromUtf8Error;

use eventsource_stream::EventStreamError;
use reqwest::header::InvalidHeaderValue;
use thiserror::Error;

/// An error enum, used in the Result
#[derive(Debug, Error)]
pub enum Error {
    /// A reqwest-provoked error has occurred
    #[error("An error occurred when processing a request: {0}")]
    ClientError(#[from] reqwest::Error),
    /// Invalid header configuration error. Probably because of the custom User-Agent header
    #[error("Invalid configuration provided: {0}")]
    InvalidConfiguration(#[from] InvalidHeaderValue),
    /// An error that occurred when parsing data, e.g. a UUID
    #[error("Parsing error has occurred: {0}")]
    ParsingError(String),
    /// A serde-provoked error has occurred
    #[error("Failed to (de)serialize data: {0}")]
    SerdeError(#[from] serde_json::Error),
    /// An error has occurred when parsing a string from UTF-8 bytes
    #[error("Failed to parse string from UTF-8: {0}")]
    StringError(#[from] FromUtf8Error),
    /// A backend related error has occurred
    #[error("An error occurred while processing request: {0}")]
    BackendError(String),
    /// An error has occurred when processing events over stream
    #[error("An error occurred while iterating over stream: {0}")]
    StreamError(#[from] EventStreamError<reqwest::Error>),
}