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);
    }
}