// Copyright (C) 2023-2099 The crate authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
// for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

use std::error::Error as StdError;
use std::str::Utf8Error;

#[derive(Debug)]
pub(crate) enum Error {
    MethodMismatch,
    InvalidToken,
    InvalidContentType,
    Hyper(hyper::Error),
    SerdeJson(serde_json::Error),
    Utf8(Utf8Error),
}

impl StdError for Error {}

impl std::fmt::Display for Error {
    fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Error::MethodMismatch => write!(fmt, "the method is invalid"),
            Error::InvalidToken => write!(fmt, "the token is invalid"),
            Error::InvalidContentType => write!(fmt, "the content-type is invalid"),
            Error::Hyper(e) => write!(fmt, "hyper error: {}", e),
            Error::SerdeJson(e) => write!(fmt, "serde_json error: {}", e),
            Error::Utf8(e) => write!(fmt, "Utf8 error: {}", e),
        }
    }
}

impl From<hyper::Error> for Error {
    fn from(err: hyper::Error) -> Error {
        Error::Hyper(err)
    }
}

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

impl From<Utf8Error> for Error {
    fn from(err: Utf8Error) -> Error {
        Error::Utf8(err)
    }
}