import { GuildScheduledEvent, GuildScheduledEventCreateOptions } from "discord.js"
import { RepetitonInfo } from "../../types/scheduledEventTypes"
import { addRepetitonStringToEventDescription, buildNewRepetitionString, getNewScheduledStart, getRepetitonInfo } from "./helper"

const needsToBeRepeated = (rInfo: RepetitonInfo): boolean => rInfo.alreadyOccured < rInfo.totalAmount

export function handleRepeatingEvent(oldguildScheduledEvent: GuildScheduledEvent, newguildScheduledEvent: GuildScheduledEvent) {
	if (!oldguildScheduledEvent.description) throw new Error('Event has no description -> cant handle this')
	const repetitionInfo = getRepetitonInfo(oldguildScheduledEvent.description)
	if (needsToBeRepeated(repetitionInfo)) {
		try {

			const newRepetitonString = buildNewRepetitionString(repetitionInfo)
			const newEventOptions: GuildScheduledEventCreateOptions = {
				name: oldguildScheduledEvent.name,
				description: addRepetitonStringToEventDescription(oldguildScheduledEvent.description, newRepetitonString),
				scheduledStartTime: getNewScheduledStart(oldguildScheduledEvent, repetitionInfo),
				privacyLevel: oldguildScheduledEvent.privacyLevel,
				entityType: oldguildScheduledEvent.entityType,
				channel: oldguildScheduledEvent.channel?.id,
				reason: 'Repetition'
			}
			newguildScheduledEvent.guild?.scheduledEvents.create(newEventOptions)
		} catch (err) {
			console.error(err)
		}
	}
}