type DownloadDialogState = {
	isOpen: boolean;
	url: string | null;
};

let state: DownloadDialogState = { isOpen: false, url: null };
const listeners = new Set<() => void>();

function emit() {
	listeners.forEach((l) => l());
}

export function subscribeDownloadDialog(listener: () => void) {
	listeners.add(listener);
	return () => listeners.delete(listener);
}

export function getDownloadDialogState() {
	return state;
}

export function openDownloadDialog(url: string | null) {
	state = { isOpen: true, url };
	emit();
}

export function closeDownloadDialog() {
	state = { isOpen: false, url: null };
	emit();
}