use std::env::var;
use std::fs::File;
use std::io::Read;

use tfetch::{kernel, uptime, Os};

pub fn main() {

    let mut hostname = String::new();
    let mut hostname_file = File::open("/etc/hostname").unwrap();
    hostname_file.read_to_string(&mut hostname).unwrap();

    let os = Os::detect().unwrap();
    let style = os.style();
    let unstyle = os.unstyle();

    let username = format!("{style}{}{unstyle}@{style}{}{unstyle}", var("USER").unwrap(), hostname, style = style, unstyle = unstyle);
    let osname = format!("{style}OS:{unstyle} {}\n", Os::ArchLinux.name(), style = style, unstyle = unstyle);

    let kernel = format!("{style}Kernel:{unstyle} {}", kernel().unwrap(), style = style, unstyle = unstyle);
    let uptime = format!("{style}Uptime:{unstyle} {}", &uptime().unwrap()[3..], style = style, unstyle = unstyle);

    let info = [
        String::from("\n"),
        username,
        osname,
        kernel,
        uptime,
    ];

    let mut logo_iterator = Os::ArchLinux.ascii_logo().lines();
    let mut info_iterator = info.iter();

    loop {
        match (logo_iterator.next(), info_iterator.next()) {
            (Some(logo), Some(info)) => print!("{}  {}", logo, info),
            (Some(logo), None) => println!("{}", logo),
            _ => break,
        }
    }
}