/* Galvanic Corrosion - Rec Room custom server for communities.
<https://gitea.proxnet.dev/zombieb/galvanic-corrosion>
Copyright (C) 2025  @zombieb (Discord / proxnet Gitea)

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>. */

const handoffs: Set<SocketHandoff> = new Set();

function randomId(length: number) {
    let result = '';
    const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let counter = 0;
    while (counter < length) {
        result += characters.charAt(Math.floor(Math.random() * characters.length));
        counter += 1;
    }
    return result;
}

/**
 * Reserve `connectionId`s for each connected client, hand off to socket handler when complete or timed out
 */
export class SocketHandoff {

    static all() {
        return Array.from(handoffs.values());
    }
    static generateId() {
        let id = randomId(48);
        while (handoffs.values().find(handoff => handoff.id == id)) id = randomId(48);
        return id;
    }
    static find(id: string) {
        return handoffs.values().find(handoff => handoff.id === id);
    }

    id: string;

    #timeout: number;

    constructor() {
        this.id = SocketHandoff.generateId();

        this.#timeout = setTimeout(() => {
            this.complete();
        });

        handoffs.add(this);
    }

    complete() {
        clearTimeout(this.#timeout);
        handoffs.delete(this);
    }

}