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//! Defines a throbber.
use std::time::Duration;

use ambient_element::{use_interval_deps, use_state, ElementComponent};
use ambient_guest_bridge::core::text::components::font_family;

use crate::text::Text;

#[derive(Debug, Clone)]
/// Shows an animated progress bar to indicate that progress is
/// being made and has not frozen.
pub struct Throbber;
impl ElementComponent for Throbber {
    fn render(self: Box<Self>, hooks: &mut ambient_element::Hooks) -> ambient_element::Element {
        let (index, set_index) = use_state(hooks, 0);
        use_interval_deps(
            hooks,
            Duration::from_secs_f32(0.1),
            false,
            index,
            move |_| set_index(index + 1),
        );
        let s = match index % 4 {
            0 => "-",
            1 => "\\",
            2 => "|",
            3 => "/",
            _ => "*",
        };
        Text::el(s).with(font_family(), "Code".to_string())
    }
}