import { Server } from 'http';
import { Socket, Server as Server$1 } from 'socket.io';
import { Room as Room$1 } from 'socket.io-adapter';
import { Awareness } from 'y-protocols/awareness';
import * as Y from 'yjs';
import { CorsOptions, CorsOptionsDelegate } from 'cors';
import { ServerOptions } from 'engine.io/build/server';

declare type RoomName = Room$1;
declare type ClientId = Awareness['clientID'];
interface DefaultClientData {
}

declare type EventHandler = (...args: any[]) => void;
declare type DefaultEvents = {
    [eventName: string]: EventHandler;
};
declare type EventNameWithScope<Scope extends string, Type extends string = string> = `${Scope}:${Type}`;
declare type DataScope = 'data';
declare type RoomScope = 'room';
declare type YDocScope = 'doc';
declare type AwarenessScope = 'awareness';
declare type ObservableScope = YDocScope | AwarenessScope;
declare type ValidEventScope = DataScope | RoomScope | ObservableScope;
declare type ValidateEvents<Events extends DefaultEvents & {
    [EventName in keyof Events]: EventName extends EventNameWithScope<infer EventScope> ? EventScope extends ValidEventScope ? Events[EventName] : never : Events[EventName];
}> = Events;
declare type DefaultServerToClientEvents<ClientData extends DefaultClientData = DefaultClientData> = ValidateEvents<{
    ['data:update']: (data: ClientData) => void;
    ['doc:diff']: (diff: ArrayBuffer) => void;
    ['doc:update']: (updateV2: ArrayBuffer) => void;
    ['awareness:update']: (update: ArrayBuffer) => void;
}>;
interface ServerToClientEvents<ClientData extends DefaultClientData = DefaultClientData> extends DefaultServerToClientEvents<ClientData> {
}
declare type DefaultClientToServerEvents = ValidateEvents<{
    ['room:close']: () => void;
    ['doc:diff']: (diff: Uint8Array) => void;
    ['doc:update']: (updateV2: Uint8Array, callback?: () => void) => void;
    ['awareness:update']: (update: Uint8Array) => void;
}>;
interface ClientToServerEvents extends DefaultClientToServerEvents {
}

interface Persistence {
    bindState: (roomName: RoomName, doc: Y.Doc) => Promise<void>;
    writeState: (roomName: RoomName, doc: Y.Doc) => Promise<void>;
}

declare type UserId = string | ClientId;
declare type GetUserId = (socket: Omit<Socket, 'userId'>) => UserId | Error;

interface Room {
    owner: UserId;
    awareness: Awareness;
    getDoc: () => Promise<Y.Doc>;
    destroy: () => Promise<void>;
}
declare type RoomMap = Map<RoomName, Room>;

declare module 'socket.io' {
    /**
     * Data related to yjs
     */
    interface SocketYjsData {
        roomMap: RoomMap;
        roomName: RoomName;
        clientId: ClientId;
    }
    interface Socket {
        yjs: SocketYjsData;
        userId: UserId;
    }
}
interface Options {
    /**
     * Handle auth and room permission
     */
    getUserId?: GetUserId;
    persistence?: Persistence;
    /**
     * @default false
     */
    autoDeleteRoom?: boolean;
    /**
     * cors settings
     */
    cors?: CorsOptions | CorsOptionsDelegate;
    allowRequest?: ServerOptions['allowRequest'];
}
declare type CreateSocketIOServer = <ClientData extends DefaultClientData = DefaultClientData>(httpServer: Server, options?: Options) => Server$1<ClientToServerEvents, ServerToClientEvents<ClientData>>;
/**
 * There are four scenarios:
 *  1. Signed User share sheet to specified person with write permission (both side need authorization)
 *  2. Signed User share sheet to specified person with only view permission (both side need authorization)
 *  3. Signed User share sheet to everyone with write permission (only one side need authorization)
 *  4. Signed User share sheet to everyone with only view permission (only one side need authorization)
 *
 *  If sheet owner close sharing (or disable sharing), others won't see the sheet anymore,
 *    which means we will delete the sheet in their browser.
 *
 * We only consider scenario 3 for now, because It's easy to implement
 */
declare const createSocketIOServer: CreateSocketIOServer;

declare const createSimpleServer: (options?: Options) => Server;

export { Options, createSimpleServer, createSocketIOServer };