rsftch 0.2.4

Lightning fast hardware fetch tool written in rust.
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use std::process::Command;
use std::env;
use std::fs;

use colored::Colorize;
use nixinfo::uptime;
use libmacchina::MemoryReadout;
use libmacchina::traits::MemoryReadout as _;

fn main() {
  let args: Vec<String> = env::args().collect();
  if args.len() == 1 {
    info(true, 0);
  } else {
    for arg in &args {
      if arg == "-h" || arg == "--help" || arg == "--usage" { help(); } 
      else if arg == "-nc" || arg == "--no-color" { info(false, 0); }
    }
  }
}

fn info(formatting: bool, exclude: i8) {
  let user = match formatting {
    false => whoami(),
    true  => whoami().purple().to_string(),
  };

  let hostname = match formatting {
    false => uname_n(),
    true  => uname_n().purple().to_string(),
  };

  let distroascii = match formatting {
    false => get_distro_ascii(),
    true  => get_distro_ascii().blue().bold().to_string(),
  };

  let kernel = match formatting {
    false => uname_r(),
    true  => uname_r().purple().to_string(),
  };
 
  let desktop = match formatting {
    false => option_env!("XDG_CURRENT_DESKTOP").unwrap_or_default().to_string().to_string(),
    true  => option_env!("XDG_CURRENT_DESKTOP").unwrap_or_default().purple().to_string(),
  };
    
  let uptime = match formatting {
    false => {
      match uptime() {
        Ok(string_from_uptime) => string_from_uptime,
        Err(error) => {
          eprintln!("Error from uptime(): {}", error);
          "".to_string()
        }
      }
    }
    true => {
      match uptime() {
        Ok(string_from_uptime) => string_from_uptime.purple().to_string(),
        Err(error) => {
          eprintln!("Error from uptime(): {}", error);
          "".to_string()
        }
      }
    }
  };

  let shell = match formatting {
    false => shell_name(),
    true  => shell_name().purple().to_string(),
  };

  let terminal = match formatting {
    false => get_terminal(),
    true  => get_terminal().purple().to_string(),
  };

  let memory = match formatting {
    false => get_mem(),
    true  => get_mem().purple().to_string(),
  };

  
  if exclude != 1 { println!("{}\n", distroascii); }
  if exclude != 2 { println!("{}      ~  {}", "user", user); }
  if exclude != 3 { println!("󰍹  {}  ~  {}", "hostname", hostname); }
  if exclude != 4 { println!("{}    ~  {}", "kernel", kernel); }
  if exclude != 5 { println!("{}        ~  {}", "de", desktop); }
  if exclude != 6 { println!("󰥔  {}    ~  {}", "uptime", uptime); }
  if exclude != 7 { println!("{}     ~  {}", "shell", shell); }
  if exclude != 8 { println!("{}  ~  {}", "terminal", terminal); }
  if exclude != 9 { println!("{}    ~  {}", "memory", memory); }
}

fn help() {
  println!("{}", "Rsftch".bold());
  println!("{}", "A lightning fast hardware fetch written in rust.".italic());
  println!("\nUsage: rsftch [OPTION...]\n");
  println!("  -h,  --help       Bring up this menu");
  println!("  -o,  --override   Override distrobrution, changes ASCII. (not implemented yet)");
  println!("  -nc, --no-color   Removes all colors and formatting.")
} 

fn whoami() -> String {
  let output = Command::new("whoami").output().expect("whoami failed");
  String::from_utf8_lossy(&output.stdout).trim().to_string()
}

fn get_os_release_pretty_name(opt: char) -> Option<String> {
  if opt == 'i' { // id
    let output = Command::new("cat")
      .arg("/etc/lsb-release")
      .output()
      .ok()?;

    let output_str = String::from_utf8_lossy(&output.stdout);
    let lines = output_str.lines();
    for line in lines {
      if line.starts_with("DISTRIB_ID=") {
        let parts = line.splitn(2, '=').collect::<Vec<_>>();
        if parts.len() == 2 {
          return Some(parts[1].trim().trim_matches('\"').to_owned());
        }
      }
    }
    return None;
  } else if opt == 'p' { // pretty name
    let contents = fs::read_to_string("/etc/lsb-release").ok()?;

    let lines = contents.lines();
    for line in lines {
      if line.starts_with("DISTRIB_DESCRIPTION=") {
        let parts = line.splitn(2, '=').collect::<Vec<_>>();
        if parts.len() == 2 {
          return Some(parts[1].trim().trim_matches('\"').to_owned());
        }
      }
    }
    return None;
  }
  return None;
}

fn format_bytes(kbytes: u64) -> String {
    const MIB: u64 = 1048576;
    format!("{:.2} GiB", kbytes as f64 / MIB as f64)
}

fn get_mem() -> String {
    let mem_readout = MemoryReadout::new();
    let total_mem = mem_readout.total().unwrap_or(0);
    let used_mem = mem_readout.used().unwrap_or(0);

    let total_mem_str = format_bytes(total_mem);
    let used_mem_str = format_bytes(used_mem);

    format!("{} / {}", used_mem_str, total_mem_str)
}

fn uname_r() -> String {
  let output = Command::new("uname").arg("-r").output().expect("uname failed -r");
  String::from_utf8_lossy(&output.stdout).trim().to_string()
}

fn uname_s() -> String {
  let output = Command::new("uname").arg("-s").output().expect("uname failed -s");
  String::from_utf8_lossy(&output.stdout).trim().to_string()
}

fn uname_n() -> String {
  let output = Command::new("uname").arg("-n").output().expect("uname failed -n");
  String::from_utf8_lossy(&output.stdout).trim().to_string()
}

fn shell_name() -> String {
  let shell = env::var("SHELL").expect("SHELL not set");
  let parts: Vec<&str> = shell.split('/').collect();
  parts.last().unwrap().to_string()
}

fn get_terminal() -> String {
  let term = env::var("TERM").unwrap_or("".to_string());
  return term;
}

fn get_distro_ascii() -> String {
  if      get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("arch")        { return "   ___               __ \n  / _ |  ____ ____  / / \n / __ | / __// __/ / _ \\\n/_/ |_|/_/   \\__/ /_//_/".to_string(); } 
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("debian")      { return "   ___      __   _         \n  / _ \\___ / /  (_)__ ____ \n / // / -_) _ \\/ / _ `/ _ \\\n/____/\\__/_.__/_/\\_,_/_//_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("fedora")      { return "   ____       __             \n  / __/__ ___/ /__  _______ _\n / _// -_) _  / _ \\/ __/ _ `/\n/_/  \\__/\\_,_/\\___/_/  \\_,_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("endeavouros") { return "   ____        __                           \n  / __/__  ___/ /__ ___ __  _____  __ ______\n / _// _ \\/ _  / -_) _ `/ |/ / _ \\/ // / __/\n/___/_//_/\\_,_/\\__/\\_,_/|___/\\___/\\_,_/_/   ".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("void")        { return "   _   __     _    __\n | | / /__  (_)__/ /\n | |/ / _ \\/ / _  / \n |___/\\___/_/\\_,_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("ubuntu")      { return "  __  ____             __      \n / / / / /  __ _____  / /___ __\n/ /_/ / _ \\/ // / _ \\/ __/ // /\n\\____/_.__/\\_,_/_//_/\\__/\\_,_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("suse")        { return "  ____                ____            \n / __ \\___  ___ ___  / __/_ _____ ___ \n/ /_/ / _ \\/ -_) _ \\_\\ \\/ // (_-</ -_)\n\\____/ .__/\\__/_//_/___/\\_,_/___/\\__/ \n    /_/                            ".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("raspbian")    { return "   ___                __   _         \n  / _ \\___ ____ ___  / /  (_)__ ____ \n / , _/ _ `(_-</ _ \\/ _ \\/ / _ `/ _ \\\n/_/|_|\\_,_/___/ .__/_.__/_/\\_,_/_//_/\n             /_/             ".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("mint")        { return "   __  ____      __ \n  /  |/  (_)__  / /_\n / /|_/ / / _ \\/ __/\n/_/  /_/_/_//_/\\__/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("mx")          { return "   __  ____  __  __   _               \n  /  |/  / |/_/ / /  (_)__  __ ____ __\n / /|_/ />  <  / /__/ / _ \\/ // /\\ \\ /\n/_/  /_/_/|_| /____/_/_//_/\\_,_//_\\_\\ ".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("gentoo")      { return "  _____         __          \n / ___/__ ___  / /____  ___ \n/ (_ / -_) _ \\/ __/ _ \\/ _ \\\n\\___/\\__/_//_/\\__/\\___/\\___/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("slackware")   { return "   ______         __                      \n  / __/ /__ _____/ /___    _____ ________ \n _\\ \\/ / _ `/ __/  '_/ |/|/ / _ `/ __/ -_)\n/___/_/\\_,_/\\__/_/\\_\\|__,__/\\_,_/_/  \\__/ ".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("uwuntu")      { return "  __  __       __  __     __      \n / / / /    __/ / / /__  / /___ __\n/ /_/ / |/|/ / /_/ / _ \\/ __/ // /\n\\____/|__,__/\\____/_//_/\\__/\\_,_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("nix")         { return "   _  ___      ____  ____\n  / |/ (_)_ __/ __ \\/ __/\n /    / /\\ \\ / /_/ /\\ \\  \n/_/|_/_//_\\_\\\\____/___/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("vanilla")     { return "  _   __          _ ____    \n | | / /__ ____  (_) / /__ _\n | |/ / _ `/ _ \\n/ / / / _ `/\n |___/\\_,_/_//_/_/_/_/\\_,_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("kali")        { return "   __ __     ___   \n  / //_/__ _/ (_)  \n / ,< / _ `/ / /   \n/_/|_|\\_,_/_/_/".to_string(); }
  else if get_os_release_pretty_name('i').unwrap_or("".to_string()).to_ascii_lowercase().contains("cachy")       { return "  _____         __       \n / ___/__ _____/ /  __ __\n/ /__/ _ `/ __/ _ \\/ // /\n\\___/\\_,_/\\__/_//_/\\_, / \n                  /___/".to_string(); }
  if      uname_s().to_ascii_lowercase().contains("netbsd")  { return "   _  __    __  ___  _______ \n  / |/ /__ / /_/ _ )/ __/ _ \\\n /    / -_) __/ _  |\\ \\/ // /\n/_/|_/\\__/\\__/____/___/____/ ".to_string(); }
  else if uname_s().to_ascii_lowercase().contains("freebsd") { return "   ___            ___  _______ \n  / _/______ ___ / _ )/ __/ _ \\\n / _/ __/ -_) -_) _  |\\ \\/ // /\n/_//_/  \\__/\\__/____/___/____/".to_string(); }
  else { return "   ___           __    ____    __      __ \n  / _ \\__ _____ / /_  / __/__ / /_____/ / \n / , _/ // (_-</ __/ / _// -_) __/ __/ _ \\\n/_/|_|\\_,_/___/\\__/ /_/  \\__/\\__/\\__/_//_/".to_string(); }
}