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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Adapter = void 0;
const events_1 = require("events");
class Adapter extends events_1.EventEmitter {
    /**
     * In-memory adapter constructor.
     *
     * @param {Namespace} nsp
     */
    constructor(nsp) {
        super();
        this.nsp = nsp;
        this.rooms = new Map();
        this.sids = new Map();
        this.encoder = nsp.server.encoder;
    }
    /**
     * To be overridden
     */
    init() { }
    /**
     * To be overridden
     */
    close() { }
    /**
     * Adds a socket to a list of room.
     *
     * @param {SocketId}  id      the socket id
     * @param {Set<Room>} rooms   a set of rooms
     * @public
     */
    addAll(id, rooms) {
        if (!this.sids.has(id)) {
            this.sids.set(id, new Set());
        }
        for (const room of rooms) {
            this.sids.get(id).add(room);
            if (!this.rooms.has(room)) {
                this.rooms.set(room, new Set());
                this.emit("create-room", room);
            }
            if (!this.rooms.get(room).has(id)) {
                this.rooms.get(room).add(id);
                this.emit("join-room", room, id);
            }
        }
    }
    /**
     * Removes a socket from a room.
     *
     * @param {SocketId} id     the socket id
     * @param {Room}     room   the room name
     */
    del(id, room) {
        if (this.sids.has(id)) {
            this.sids.get(id).delete(room);
        }
        this._del(room, id);
    }
    _del(room, id) {
        if (this.rooms.has(room)) {
            const deleted = this.rooms.get(room).delete(id);
            if (deleted) {
                this.emit("leave-room", room, id);
            }
            if (this.rooms.get(room).size === 0) {
                this.rooms.delete(room);
                this.emit("delete-room", room);
            }
        }
    }
    /**
     * Removes a socket from all rooms it's joined.
     *
     * @param {SocketId} id   the socket id
     */
    delAll(id) {
        if (!this.sids.has(id)) {
            return;
        }
        for (const room of this.sids.get(id)) {
            this._del(room, id);
        }
        this.sids.delete(id);
    }
    /**
     * Broadcasts a packet.
     *
     * Options:
     *  - `flags` {Object} flags for this packet
     *  - `except` {Array} sids that should be excluded
     *  - `rooms` {Array} list of rooms to broadcast to
     *
     * @param {Object} packet   the packet object
     * @param {Object} opts     the options
     * @public
     */
    broadcast(packet, opts) {
        const rooms = opts.rooms;
        const except = opts.except || new Set();
        const flags = opts.flags || {};
        const packetOpts = {
            preEncoded: true,
            volatile: flags.volatile,
            compress: flags.compress
        };
        const ids = new Set();
        packet.nsp = this.nsp.name;
        const encodedPackets = this.encoder.encode(packet);
        if (rooms.size) {
            for (const room of rooms) {
                if (!this.rooms.has(room))
                    continue;
                for (const id of this.rooms.get(room)) {
                    if (ids.has(id) || except.has(id))
                        continue;
                    const socket = this.nsp.sockets.get(id);
                    if (socket) {
                        socket.packet(encodedPackets, packetOpts);
                        ids.add(id);
                    }
                }
            }
        }
        else {
            for (const [id] of this.sids) {
                if (except.has(id))
                    continue;
                const socket = this.nsp.sockets.get(id);
                if (socket)
                    socket.packet(encodedPackets, packetOpts);
            }
        }
    }
    /**
     * Gets a list of sockets by sid.
     *
     * @param {Set<Room>} rooms   the explicit set of rooms to check.
     */
    sockets(rooms) {
        const sids = new Set();
        if (rooms.size) {
            for (const room of rooms) {
                if (!this.rooms.has(room))
                    continue;
                for (const id of this.rooms.get(room)) {
                    if (this.nsp.sockets.has(id)) {
                        sids.add(id);
                    }
                }
            }
        }
        else {
            for (const [id] of this.sids) {
                if (this.nsp.sockets.has(id))
                    sids.add(id);
            }
        }
        return Promise.resolve(sids);
    }
    /**
     * Gets the list of rooms a given socket has joined.
     *
     * @param {SocketId} id   the socket id
     */
    socketRooms(id) {
        return this.sids.get(id);
    }
}
exports.Adapter = Adapter;