use wasm_bindgen::prelude::*;
use wasm_bindgen::JsCast;

mod drawing;
mod shapes;
mod circle;

use shapes::*;
use circle::CircleShapes;

#[wasm_bindgen(start)]
pub fn start() {
    let document = web_sys::window().unwrap().document().unwrap();
    let canvas = document.get_element_by_id("canvas").unwrap();
    let canvas: web_sys::HtmlCanvasElement = canvas
        .dyn_into::<web_sys::HtmlCanvasElement>()
        .map_err(|_| ())
        .unwrap();
  
    let context = canvas
        .get_context("2d")
        .unwrap()
        .unwrap()
        .dyn_into::<web_sys::CanvasRenderingContext2d>()
        .unwrap();

    context.begin_path();
  
    let iter = CircleShapes::new(100, 13, Circle {center: Point {x: 75.0, y: 75.0}, radius: 70.0});
    for shape in iter {
        drawing::draw_shape(shape, &context);
    }
    context.stroke();
}