import { app } from "@/firebase";
import { getFirestore, doc, getDoc } from "firebase/firestore";
import { CEFR_STEPS } from "@/resources/grading";
import { getUserCorporate } from "@/utils/groups.be";
import { User } from "@/interfaces/user";
import { Grading } from "@/interfaces";
const db = getFirestore(app);

export const getGradingSystem = async (user: User): Promise<Grading> => {
  const snapshot = await getDoc(doc(db, "grading", user.id));
  if (snapshot.exists()) return snapshot.data() as Grading;

  if (user.type !== "teacher" && user.type !== "student")
    return { steps: CEFR_STEPS, user: user.id };

  const corporate = await getUserCorporate(user.id);
  if (!corporate) return { steps: CEFR_STEPS, user: user.id };

  const corporateSnapshot = await getDoc(doc(db, "grading", corporate.id));
  if (corporateSnapshot.exists()) return corporateSnapshot.data() as Grading;

  return { steps: CEFR_STEPS, user: user.id };
};