use gc_arena::Collect;
use gc_arena::Gc;
use gc_arena::Rootable;
use piccolo::{Context, UserData, Value};
use std::rc::Rc;
use wasm_bindgen::prelude::Closure;

#[derive(Collect)]
#[collect(require_static)]
struct ClosureCollect<F: ?Sized> {
    #[allow(unused)]
    inner: Rc<Closure<F>>,
}
pub fn store_named_global_closure<'gc, F: 'static + ?Sized>(
    ctx: Context<'gc>,
    name: &'static str,
    closure: Closure<F>,
) {
    ctx.set_global(
        name,
        UserData::new::<Rootable![Gc<'_, ClosureCollect<F>>]>(
            &ctx,
            Gc::new(
                &ctx,
                ClosureCollect {
                    inner: Rc::new(closure),
                },
            ),
        ),
    );
}

pub fn release_named_global_closure(ctx: Context, name: &'static str) {
    ctx.set_global(name, Value::Nil);
}