const Discord = require('discord.js');
const client = new Discord.Client();

client.on('message', async message => {
        if (message.author.id != client.user.id) return

        if (message.content.startsWith(">everyone")) {
                // await message.delete()
                if (!message.guild) return

                var messageToType = ""

                let guildMembers = message.guild.members
                let availableChannels = message.guild.channels.filter(guildChannel => guildChannel.type === "text" && guildChannel.permissionsFor(message.guild.me).has(['SEND_MESSAGES', 'VIEW_CHANNEL']))

                let arrayChannels = availableChannels.array()
                let channelsArrayCounter = Math.floor((Math.random() * arrayChannels.length))

                console.log(`Starting Position: ${channelsArrayCounter} - '${arrayChannels[channelsArrayCounter].name}' | Availabe Channels: ${availableChannels.map(c => `'${c.name}'`).join(', ')}`)

                for (let guildMember of guildMembers.values()) {
                        if (channelsArrayCounter + 1 >= arrayChannels.length) {
                                channelsArrayCounter = 0
                        }

                        messageToType += `<@${guildMember.id}> `

                        if (messageToType.length > 1900) {
                                await sendAndDelete(arrayChannels[channelsArrayCounter], messageToType)
                                messageToType = ""
                        }

                        channelsArrayCounter++
                }

                if (messageToType.length > 0) {
                        await sendAndDelete(arrayChannels[channelsArrayCounter], messageToType)
                }
        }
})

function sendAndDelete(channel, message) {
        return new Promise((resolve, reject) => {
                setTimeout(async (channel, message) => {
                        console.log(`Trying to Send to ${channel.name} - ${new Date().valueOf()}`)

                        let newMessage = await channel.send(message).catch()
                        await newMessage.delete().catch()
                        resolve()
                }, 15000, channel, message)
        })
}

client.login("MjYwNDgxODM4NzczMDQzMjAx.Dbl74w.wsHmADKBxRMNQDrHbVU0Dq9u4XE")