import {
	ChatInputCommandInteraction,
	GuildMember,
	PermissionsBitField,
	SlashCommandBuilder
} from 'discord.js';
import { Command } from '../../commands';
import {
	CreateVoiceConnectionOptions,
	getVoiceConnection,
	joinVoiceChannel,
	JoinVoiceChannelOptions
} from '@discordjs/voice';

const builder = new SlashCommandBuilder()
	.setName('join')
	.setDescription('Makes the bot join your current voice channel');

const cmd: Command = {
	name: builder.name,
	builder: builder,
	execute: async (interaction: ChatInputCommandInteraction): Promise<void> => {
		const member = interaction.member as GuildMember;
		if (!member || !interaction.guild) {
			interaction.reply('This command only works on guilds');
			return;
		}

		if (!member.voice.channel || !member.voice.channelId) {
			interaction.reply('You are not currently on a voice channel');
			return;
		}

		const me = interaction.guild.members.me as GuildMember;

		if (
			getVoiceConnection(interaction.guild.id) &&
			me.voice.channelId === member.voice.channelId
		) {
			interaction.reply('Already connected');
			return;
		}

		const voiceChannel = member.voice.channel;
		if (
			voiceChannel.userLimit != 0 &&
			voiceChannel.members.size >= voiceChannel.userLimit
		) {
			interaction.reply('Channel is full');
			return;
		}

		const perms = voiceChannel.permissionsFor(me);

		if (!perms.has(PermissionsBitField.Flags.ViewChannel)) {
			interaction.reply("I don't have permissions to see that channel");
			return;
		}

		if (!perms.has(PermissionsBitField.Flags.Connect)) {
			interaction.reply("I don't have the permissions to join that channel");
			return;
		}

		if (!perms.has(PermissionsBitField.Flags.Speak)) {
			interaction.reply("I don't have permissions to speak on that channel");
			return;
		}

		const voiceOptions: JoinVoiceChannelOptions & CreateVoiceConnectionOptions =
			{
				channelId: member.voice.channelId,
				guildId: interaction.guild.id,
				adapterCreator: interaction.guild.voiceAdapterCreator
			};

		const connection = await joinVoiceChannel(voiceOptions);
		if (!connection) {
			interaction.reply('Unable to join');
			return;
		}

		interaction.reply('Joined');
	}
};

export default cmd;