"use strict";

import { EventEmitter, once } from 'events';

class ItemQueue extends EventEmitter {
	constructor() {
		super();
		this.items = [];
	}
	
	__push_single(item) {
		this.items.push(item);
		this.emit("push", item);
	}
	
	push(...items) {
		
	}
	
	async pop(time_limit = 0) {
		if(this.items.length === 0) {
		}
		
		this.pop()
	}
	
	wait_for_item(time_limit_ms = 0) {
		const ac = new AbortController();
		let timeout = null;
		if(time_limit_ms > 0) {
			timeout = setTimeout(() => {
				ac.abort();
			}, time_limit_ms);
		}
		let item = await once(this, "push", { signal: ac.signal });
		if(timeout !== null)
			clearTimeout(timeout);
		
		this.items.splice(this.items.indexOf(item));
		return item;
	}
	
	wait_empty() {
		
	}
}

export default ItemQueue;