import { AXSecurityDomain } from './AXSecurityDomain';
import { checkValue } from './checkValue';
import { release } from '@awayfl/swf-loader';
import { scopeStacks } from './scopeStacks';

export function ensureBoxedReceiver(sec: AXSecurityDomain, receiver: any, callable: any) {
	if (receiver && typeof receiver === 'object') {
		release || checkValue(receiver);
		return receiver;
	}
	let boxedReceiver = sec.box(receiver);
	// Boxing still leaves `null` and `undefined` unboxed, so return the current global instead.
	if (!boxedReceiver) {
		if (scopeStacks.length) {
			boxedReceiver = scopeStacks[scopeStacks.length - 1].topScope().global.object;
		} else if (callable.receiver) {
			// If no scripts are on the stack (e.g., for ExternalInterface calls), use the function's
			// own global.
			boxedReceiver = callable.receiver.scope.global.object;
		}
	}
	return boxedReceiver;
}