/*
	Copyright 2023-2024 Gabriel Bjørnager Jensen.

	This file is part of eAS.

	eAS is free software: you can redistribute it
	and/or modify it under the terms of the GNU
	General Public License as published by the Free
	Software Foundation, either version 3 of the
	License, or (at your option) any later version.

	eAS 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
	General Public License for more details.

	You should have received a copy of the GNU
	General Public License along with eAS. If not,
	see <https://www.gnu.org/licenses/>.
*/

use crate::error::Error;

use enum_iterator::Sequence;
use std::fmt::{Display, Formatter};
use std::str::FromStr;

#[derive(Clone, Copy, Eq, PartialEq, Sequence)]
pub enum Encoding {
	Utf8,
}

impl Display for Encoding {
	fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
		use Encoding::*;
		return match *self {
			Utf8 => write!(f, "utf8"),
		};
	}
}

impl Default for Encoding {
	fn default() -> Self {
		return Encoding::Utf8;
	}
}

impl FromStr for Encoding {
	type Err = Error;

	fn from_str(s: &str) -> Result<Self, Self::Err> {
		use Encoding::*;

		let s = s.to_string().to_lowercase();
		return match s.as_str() {
			"utf8" => Ok(Utf8),

			_ => Err(Error::InvalidFileEncoding(s)),
		};
	}
}