import {
  collection,
  doc,
  type DocumentData,
  type FirestoreDataConverter,
  type QueryDocumentSnapshot,
  type SnapshotOptions,
} from 'firebase/firestore';

import { db } from '@/lib/firebase';
import type { UserDocument } from '@/types/firestore';

const converter = <T extends DocumentData>(): FirestoreDataConverter<T> => ({
  toFirestore: (value: T) => value,
  fromFirestore: (
    snapshot: QueryDocumentSnapshot,
    options: SnapshotOptions
  ) => snapshot.data(options) as T,
});

export const collectionNames = {
  users: 'users',
} as const;

export const usersCollection = collection(
  db,
  collectionNames.users
).withConverter(converter<UserDocument>());

export const userDoc = (uid: string) => doc(usersCollection, uid);