sparkletown/sparkle

import firebase from "firebase/app";
import omit from "lodash/omit";

// @debt Move this file into types/ or possibly even merge it with types/utility.ts

export type WithId<T extends object> = T & { id: string };

export type WithSlug<T extends object> = T & { slug: string };

export type WithWorldId<T extends object> = T & { worldId: string };
export type WithOptionalWorldId<T extends object> = T & { worldId?: string };

export const withId = <T extends object>(obj: T, id: string): WithId<T> => ({
  ...obj,
  id,
});

export type WithoutId<T extends object> = Pick<T, Exclude<keyof T, "id">>;

export type MaybeWithId<T extends object> = WithoutId<T> & { id?: string };

export const withoutId = <T extends object>(obj: T): WithoutId<T> =>
  omit(obj, "id");

const CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
// @see https://stackoverflow.com/questions/49595193/generating-random-key-firestore
// @see https://github.com/firebase/firebase-js-sdk/blob/73a586c92afe3f39a844b2be86086fddb6877bb7/packages/firestore/src/util/misc.ts#L36
export const generateFirestoreId: (options?: {
  emulated: boolean;
}) => string = (options) => {
  if (!options?.emulated) {
    return firebase.firestore().collection("tmp").doc().id;
  }

  let id = "";
  for (let i = 0; i < 20; i++) {
    id += CHARS.charAt(Math.floor(Math.random() * CHARS.length));
  }
  return id;
};