// Copyright (C) 2022 Maxime “pep” Buquet <pep@bouah.net>
//
// 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::convert::From;
use std::error::Error as StdError;

use mmdbus::dbus;
use xmpp_parsers::JidParseError;

#[derive(Debug)]
pub enum Error {
    DBusError(dbus::Error),
    InvalidArgs,
    JidParseError(JidParseError),
}

impl StdError for Error {
    fn cause(&self) -> Option<&dyn StdError> {
        match self {
            Error::DBusError(e) => Some(e),
            Error::InvalidArgs => None,
            Error::JidParseError(e) => Some(e),
        }
    }
}

impl std::fmt::Display for Error {
    fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Error::DBusError(e) => write!(fmt, "dbus error: {}", e),
            Error::InvalidArgs => write!(fmt, "invalid arguments"),
            Error::JidParseError(e) => write!(fmt, "jid parse error: {}", e),
        }
    }
}

impl From<dbus::Error> for Error {
    fn from(err: dbus::Error) -> Error {
        Error::DBusError(err)
    }
}

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