import { Channel, Recipient } from "@spacebar/util";
import { HTTPError } from "lambert-server";

export enum ChannelType {
	GUILD_TEXT = 0, // a text channel within a guild
	DM = 1, // a direct message between users
	GUILD_VOICE = 2, // a voice channel within a guild
	GROUP_DM = 3, // a direct message between multiple users
	GUILD_CATEGORY = 4, // an organizational category that contains zero or more channels
	GUILD_NEWS = 5, // a channel that users can follow and crosspost into a guild or route
	GUILD_STORE = 6, // a channel in which game developers can sell their things
	ENCRYPTED = 7, // end-to-end encrypted channel
	ENCRYPTED_THREAD = 8, // end-to-end encrypted thread channel
	TRANSACTIONAL = 9, // event chain style transactional channel
	GUILD_NEWS_THREAD = 10, // a temporary sub-channel within a GUILD_NEWS channel
	GUILD_PUBLIC_THREAD = 11, // a temporary sub-channel within a GUILD_TEXT channel
	GUILD_PRIVATE_THREAD = 12, // a temporary sub-channel within a GUILD_TEXT channel that is only viewable by those invited and those with the MANAGE_THREADS permission
	GUILD_STAGE_VOICE = 13, // a voice channel for hosting events with an audience
	DIRECTORY = 14, // guild directory listing channel
	GUILD_FORUM = 15, // forum composed of IM threads
	TICKET_TRACKER = 33, // ticket tracker, individual ticket items shall have type 12
	KANBAN = 34, // confluence like kanban board
	VOICELESS_WHITEBOARD = 35, // whiteboard but without voice (whiteboard + voice is the same as stage)
	CUSTOM_START = 64, // start custom channel types from here
	UNHANDLED = 255, // unhandled unowned pass-through channel type
}

export interface ChannelPermissionOverwrite {
	allow: string;
	deny: string;
	id: string;
	type: ChannelPermissionOverwriteType;
}

export enum ChannelPermissionOverwriteType {
	role = 0,
	member = 1,
	group = 2,
}

export interface DMChannel extends Omit<Channel, "type" | "recipients"> {
	type: ChannelType.DM | ChannelType.GROUP_DM;
	recipients: Recipient[];
}

// TODO: probably more props
export function isTextChannel(type: ChannelType): boolean {
	switch (type) {
		case ChannelType.GUILD_STORE:
		case ChannelType.GUILD_STAGE_VOICE:
		case ChannelType.GUILD_CATEGORY:
		case ChannelType.GUILD_FORUM:
		case ChannelType.DIRECTORY:
			throw new HTTPError("not a text channel", 400);
		case ChannelType.DM:
		case ChannelType.GROUP_DM:
		case ChannelType.GUILD_NEWS:
		case ChannelType.GUILD_VOICE:
		case ChannelType.GUILD_NEWS_THREAD:
		case ChannelType.GUILD_PUBLIC_THREAD:
		case ChannelType.GUILD_PRIVATE_THREAD:
		case ChannelType.GUILD_TEXT:
		case ChannelType.ENCRYPTED:
		case ChannelType.ENCRYPTED_THREAD:
			return true;
		default:
			throw new HTTPError("unimplemented", 400);
	}
}