lexa-fs 0.1.0

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// ┃                  / /_/ / / / / (__  ) /_/ / _, _/ /___                    ┃
// ┃                 / .___/_/ /_/_/____/\__, /_/ |_|\____/                    ┃
// ┃                /_/                 /____/                                 ┃
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// ┃ Copyright: (c) 2023, Mike 'PhiSyX' S. (https://github.com/PhiSyX)         ┃
// ┃ SPDX-License-Identifier: MPL-2.0                                          ┃
// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
// ┃                                                                           ┃
// ┃  This Source Code Form is subject to the terms of the Mozilla Public      ┃
// ┃  License, v. 2.0. If a copy of the MPL was not distributed with this      ┃
// ┃  file, You can obtain one at https://mozilla.org/MPL/2.0/.                ┃
// ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛

use std::{fmt, fs, io, path};

use crate::Extension;

// -------- //
// Fonction //
// -------- //

/// Charge un fichier à partir d'un dossier, et le dé-sérialise en un type donné
/// par générique.
pub fn load<T>(
	directory: impl AsRef<path::Path>,
	filename: impl fmt::Display,
	extension: impl fmt::Display,
) -> io::Result<T>
where
	T: serde::de::DeserializeOwned,
{
	let fullpath = path::Path::new(directory.as_ref())
		.join(format!("{filename}.{extension}"));

	match extension.to_string().parse::<Extension>() {
		| Ok(Extension::ENV) => {
			let content = fs::read_to_string(fullpath)?;
			lexa_env::from_str(&content)
				.map_err(|err| io::Error::new(io::ErrorKind::Other, err))
		}

		| Ok(Extension::JSON) => {
			let fd = fs::File::open(fullpath)?;
			serde_json::from_reader(fd)
				.map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))
		}

		| Ok(Extension::TOML) => {
			let content = fs::read_to_string(fullpath)?;
			serde_toml::from_str(&content)
				.map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))
		}

		| Ok(Extension::YAML) => {
			let fd = fs::File::open(fullpath)?;
			serde_yaml::from_reader(fd)
				.map_err(|err| io::Error::new(io::ErrorKind::InvalidData, err))
		}

		| Err(err) => Err(io::Error::new(io::ErrorKind::InvalidInput, err)),
	}
}