"use strict";

module.exports = function groupEvents(events) {
	let currentSender = "";
	let currentType = "";
	let currentEvents = [];
	let eventGroups = [];

	function finalizeGroup() {
		if (currentEvents.length > 0) {
			eventGroups.push({
				sender: currentSender,
				events: currentEvents
			});

			currentEvents = [];
		}
	}

	events.forEach((event) => {
		/* TODO: Eventually group multiple non-message events from a single user into a single event item as well, even when they are of different types */
		if (event.sender !== currentSender || event.type !== currentType) {
			finalizeGroup();
			currentSender = event.sender;
			currentType = event.type;
		}

		currentEvents.push(event);
	});

	finalizeGroup();

	return eventGroups;
};