import { GuildMember, GuildScheduledEvent, GuildScheduledEventStatus } from "discord.js";
import { v4 as uuid } from "uuid";
import { client, jellyfinHandler } from "../..";
import { getGuildSpecificTriggerRoleId } from "../helper/roleFilter";
import { logger } from "../logger";


export const name = 'guildScheduledEventUpdate'

export async function execute(oldEvent: GuildScheduledEvent, newEvent: GuildScheduledEvent) {
    try {
        const requestId = uuid()
        logger.debug(`Got scheduledEvent update. New Event: ${JSON.stringify(newEvent, null, 2)}`, { guildId: newEvent.guildId, requestId })
        if (!newEvent.guild) {
            logger.error("Event has no guild, aborting.", { guildId: newEvent.guildId, requestId })
            return
        }

        if (newEvent.description?.toLowerCase().includes("!wp") && [GuildScheduledEventStatus.Active, GuildScheduledEventStatus.Completed].includes(newEvent.status)) {
            const roles = getGuildSpecificTriggerRoleId().map((key, value) => value)
            const eventMembers = (await newEvent.fetchSubscribers({ withMember: true })).filter(member => !member.member.roles.cache.hasAny(...roles)).map((value) => value.member)
            const channelMembers = newEvent.channel?.members.filter(member => !member.roles.cache.hasAny(...roles)).map((value) => value)
            const allMembers = eventMembers.concat(channelMembers ?? [])

            const members: GuildMember[] = []
            for (const member of allMembers) {
                if (!members.find(x => x.id == member.id))
                    members.push(member)
            }

            if (newEvent.status === GuildScheduledEventStatus.Active)
                createJFUsers(members, newEvent.name, requestId)
            else {
                const announcementChannel = await client.getAnnouncementChannelForGuild(newEvent.guild.id)
                if(!announcementChannel) {
                    logger.error("Could not find announcement channel. Aborting", { guildId: newEvent.guild.id, requestId })
                    return
                }
                const announcements = (await announcementChannel.messages.fetch()).filter(message => !message.pinned)
                announcements.forEach(message => message.delete())
                members.forEach(member => {
                    member.createDM().then(channel => channel.send(`Die Watchparty ist vorbei, dein Account wurde wieder gelöscht. Wenn du einen permanenten Account haben möchtest, melde dich bei Samantha oder Marukus.`))
                })
                deleteJFUsers(newEvent.guildId, requestId)
            }
        }
    } catch (error) {
        logger.error(error)
    }
}

async function createJFUsers(members: GuildMember[], movieName: string, requestId?: string) {
    logger.info(`Creating users for: \n ${JSON.stringify(members, null, 2)}`)
    members.forEach(member => {
        member.createDM().then(channel => channel.send(`Hey! Du hast dich für die Watchparty von ${movieName} angemeldet! Es geht gleich los!`))
        jellyfinHandler.upsertUser(member, "TEMPORARY", requestId)
    })
}

async function deleteJFUsers(guildId: string, requestId?: string) {
    logger.info(`Watchparty ended, deleting tmp users`, { guildId, requestId })
    jellyfinHandler.purge(guildId, requestId)
}