/* 
 * Copyright (c) 2023 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,
};

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

use yacexits::{ EX_TEMPFAIL, EX_UNAVAILABLE, EX_USAGE, exit };

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)
            },
        }
    }
}