/*
    Rust Arch Linux Updater
    Copyright (C) 2024 Luke Harding <luke@lukeh990.io>
    This program 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.
    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 General Public License for more details.
    You should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

/*
    main.rs
    This file contains the primary logic of the application
*/

use colored::{ColoredString, Colorize};

use wrappers::pacman;

mod shell_commands;
mod wrappers;

fn main() {
    println!("{}", copyright_notice());

    if let Err(e) = pacman::check() {
        error_println(e.to_string());
        return;
    } else {
        notice_println("Pacman is installed\n")
    }

    notice_println("Running pacman update");
    if let Err(e) = pacman::update_all() {
        error_println(e.to_string());
        return;
    }

    notice_println("Getting orphaned packages");
    let result = match pacman::get_unused() {
        Ok(result) => result,
        Err(e) => {
            error_println(e.to_string());
            return;
        }
    };

    if result.is_empty() {
        println!("No Orphaned Packages Found.")
    } else if let Err(e) = pacman::remove_unused(result) {
        error_println(e.to_string());
        return;
    }

    notice_println("Clearing Cache");
    if let Err(e) = pacman::clean_cache() {
        error_println(e.to_string());
        return;
    }

    notice_println("\nUpdate process complete!");
}

fn copyright_notice() -> ColoredString {
    "Rust Arch Linux Updater Copyright (C) 2024 Luke Harding <luke@lukeh990.io>\nThis program comes with ABSOLUTELY NO WARRANTY\nThis is free software, and you are welcome to redistribute it under certain conditions\n".italic()
}

pub fn error_println(msg: impl Into<String>) {
    eprintln!("{}", msg.into().red().bold())
}

pub fn notice_println(msg: impl Into<String>) {
    println!("{}", msg.into().green().bold())
}