var fs = require('fs')
const axios = require('axios')
const bot = require('discord.js')

const client = new bot.Client()
const token = ""

const roles = new Map([
    ['atc', '194717624708366336'],
    ['mentor', '337014482335170562'],
    ['staff', '194710733924073472']
])

const commands = {

    avatar (...args) {
        let message = args[0]
        message.reply(message.author.avatarURL)
    },

    ping (...args) {
        let message = args[0]
        message.channel.send('pong')
    },

    whoami (...args) {
        let message = args[0]
        let member = message.member || message.author
        let nickname = member.displayName || member.username
        member.send(`Hey, ${nickname}. Your unique discord id is \`${member.id}\`. Don't give this to **anyone**!`)
    },

    forget (...args) {
        let message = args[0]
        let member = message.member || message.author
        let nickname = member.displayName || member.username
        member.send(`Sad to see you go, ${nickname}. See ya later!`).then(e => {member.kick()})
    },

    metar (...args) {
        let message = args[0]
        let codes = [...new Set(args[1])]

        if (codes.length === 0)
            return message.reply("You need to supply at least one ICAO code! How am I supposed to know which airport(s) you're talking about!?")
        if (codes.length > 3)
            return message.reply(":astonished: Slow down cowboy! You are limited to three (3) icao codes per request!")

        Promise.all(codes.map(c => {return axios.get(`http://metar.vatsim.net/metar.php?id=${c}`)}))
        .then( responses => {
            responses.forEach(e => {
                if (e.data.substr(0,18) == `No METAR available`)
                    return message.reply(':confused: ' + e.data)
                return message.reply(e.data)
            });
        })
    }
}

client.on('message', message => {
    if (message.content.charAt(0) != '.') return

    let list = Object.keys(commands)
    let args = message.content.substr(1).split(" ")
    let command = args.shift()

    if (command === 'list')
        message.reply(list.join(', '))
    else if (list.includes(command))
        commands[command](message, args)
    else
        message.reply(`I'm gonna go ahead and assume that your message wasn't meant for me.\n I cannot understand a word you're saying... Run \`.list\` for a list of all available commands!`)
})

client.on('presenceUpdate', (o, member) => {
    if (!(o.presence.status === 'offline' && member.presence.status === 'online')) return

    let identifier = `../alcyoneus.hvacc.org/storage/app/${member.id}`

    if (!fs.existsSync(identifier)) {
        message = `Hello ${member}! My name is Alcyoneus and I am the gatekeeper of the Hellenic vACC discord server. I believe that your account is unverified.\n\nI shall grant you access after you have verified your account. To do this go to https://alcyoneus.hvacc.org/${member.id} and follow the on-screen instructions.\n\n*Please note that you must be a member of the Hellenic vACC forum for this to work.*`
        return member.send(message).then(e => {member.kick()})
    }

    let u = JSON.parse(fs.readFileSync(identifier, 'utf8'))
    let r = u.roles.map(e => {return roles.get(e)})
    member.setNickname(u.nickname)
    member.setRoles(r)
})

client.login(token)