use std::process::exit;

use gooey::value::{Dynamic, MapEach};
use gooey::widget::MakeWidget;
use gooey::widgets::{Button, Expand, Input, Label, Resize, Stack};
use gooey::Run;
use kludgine::figures::units::Lp;

fn main() -> gooey::Result {
    let username = Dynamic::default();
    let password = Dynamic::default();

    let valid =
        (&username, &password).map_each(|(username, password)| validate(username, password));

    // TODO this should be a grid layout to ensure proper visual alignment.
    let username_row = Stack::columns(
        Label::new("Username").and(Input::new(username.clone()).fit_horizontally().expand()),
    );

    let password_row = Stack::columns(Label::new("Password").and(
        // TODO secure input
        Input::new(password.clone()).fit_horizontally().expand(),
    ));

    let buttons = Stack::columns(
        Button::new("Cancel")
            .on_click(|_| {
                eprintln!("Login cancelled");
                exit(0)
            })
            .into_escape()
            .and(Expand::empty())
            .and(
                Button::new("Log In")
                    .enabled(valid)
                    .on_click(move |_| {
                        println!("Welcome, {}", username.get());
                        exit(0);
                    })
                    .into_default(),
            ),
    );

    Resize::width(
        Lp::points(300)..Lp::points(600),
        Stack::rows(username_row.and(password_row).and(buttons)),
    )
    .centered()
    .expand()
    .run()
}

fn validate(username: &String, password: &String) -> bool {
    !username.is_empty() && !password.is_empty()
}