use std::f32::consts::TAU;

use rhai::ImmutableString;

use super::super::api::Rect;
use crate::{ui::api::Color, vertexbuffer::types::RadialBarInstance, RenderInput, RenderState};

#[derive(Debug, Clone)]
pub struct RadialBar {
	pub name: ImmutableString,
	rect: Rect,
	stroke: f32,
	color: Color,
	progress: f32,
}

impl RadialBar {
	pub fn new(
		name: ImmutableString,
		stroke: f32,
		color: Color,
		rect: Rect,
		progress: f32,
	) -> Self {
		Self {
			name,
			rect,
			stroke,
			color,
			progress: progress.clamp(0.0, 1.0),
		}
	}

	pub fn set_val(&mut self, val: f32) {
		self.progress = val.clamp(0.0, 1.0);
	}

	pub fn push_to_buffer(&self, input: &RenderInput, state: &mut RenderState) {
		let rect = self
			.rect
			.to_centered(&state.window, input.ct.get_config().ui_scale);

		state.push_radialbar_buffer(RadialBarInstance {
			position: [rect.pos.x, rect.pos.y],
			diameter: rect.dim.x.min(rect.dim.y),
			stroke: self.stroke * input.ct.get_config().ui_scale,
			color: self.color.as_array(),
			angle: self.progress * TAU,
		});
	}

	pub fn step(&mut self, _input: &RenderInput, _state: &mut RenderState) {}
}