/* 
 * Copyright (c) 2023–2024 Emma Tebibyte
 * SPDX-License-Identifier: AGPL-3.0-or-later
 *
 * 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::{
	env,
	fs::File,
	io::stdin,
	process::exit,
};

use keepass::{
	db::NodeRef,
	Database,
	DatabaseKey,
};

use rustexits::{ EX_TEMPFAIL, EX_UNAVAILABLE, EX_USAGE };

fn main() {
	let argv = env::args().collect::<Vec<String>>();

	if !argv.get(1).is_some() {
		eprintln!("Usage: {} database", argv[0]);
		exit(EX_USAGE);
	}

	let mut file = match File::open(&argv[1]) {
		Ok(file) => file,
		Err(err) => {
			eprintln!("{}: {:?}", argv[0], err);
			exit(1);
		},
	};

	let mut password = String::new();
	stdin().read_line(&mut password).unwrap_or_else(|_| {
		eprintln!("{}: {}: No such file or directory.", argv[0], argv[1]);
		exit(EX_UNAVAILABLE);
	});

	let password = password.lines().nth(0).unwrap_or(&"");

	let key = DatabaseKey::new().with_password(password);
	let db = Database::open(&mut file, key).unwrap_or_else(|_| {
		eprintln!("{}: Incorrect key.", argv[0]);
		exit(EX_TEMPFAIL);
	});

	for item in &db.root {
		match item {
			NodeRef::Group(_) => {},
			NodeRef::Entry(entry) => {
				let title = entry.get_title().unwrap_or("[title]");
				let url = entry.get_url().unwrap_or("[url]");
				let username = entry.get_username().unwrap_or("[username]");
				let password = entry.get_password().unwrap_or("[password]");
				println!("{}␞{}␞{}␞{}", title, url, username, password)
			},
		}
	}
}