rhcos-shell-greeter idea but in rust

main.rs

extern crate cursive;

use std::process::Command;

use cursive::Cursive;
use cursive::align::HAlign;
use cursive::views::{Dialog, TextView, LinearLayout, Button};


fn exec_shell_command(_s: &cursive::Cursive, shell_command: String) -> String {
    let result = Command::new("sh")
        .arg("-c")
        .arg(shell_command)
        .output()
        .expect("Could not execute command");
    let ret = String::from_utf8_lossy(&result.stdout);
    return ret.to_string();
}


fn show_output(s: &mut cursive::Cursive, shell_command: String) {
    let output = exec_shell_command(s, shell_command);
    s.add_layer(
        Dialog::around(
            LinearLayout::horizontal()
            .child(Dialog::text(output).h_align(HAlign::Left))
            .child(Button::new(
                "Close", |s| s.pop_layer()))));
}

// todo: Replace this process with the shell
// fn replace_process(s: &mut cursive::Cursive, shell_command: String) {
// }

fn main() {
    let mut term = Cursive::new();

    term.add_layer(
        Dialog::around(
            LinearLayout::vertical()
            .child(TextView::new("Welcome to RHCOS!").h_align(HAlign::Left))
            .child(Button::new(
                "Reboot", |s| exec_shell_command(s, String::from("systemctl reboot -i"))))
            .child(Button::new(
                "Shutdown", |s| exec_shell_command(s, String::from("systemctl halt -i"))))
            .child(Button::new(
                "Openshift status", |s| show_output(s, String::from("oc status"))))
            .child(Button::new(
                "OSTree Status", |s| show_output(s, String::from("rpm-ostree status -v"))))
            .child(Button::new(
                "Shell", |s| show_output(s, String::from("echo todo"))))
            .child(Button::new(
                "Quit", |s| s.quit()))));

    term.run();
}