import { connectWiseApi, prisma } from "../../../constants";
import { events } from "../../globalEvents";
import { fetchAllCwMembers, findCwIdentifierByEmail } from "./fetchAllMembers";
import { setMemberCache } from "./memberCache";

/**
 * Refresh CW Identifiers
 *
 * Fetches all CW members and all users from the database, then updates
 * each user's `cwIdentifier` field by matching their email to a CW member's
 * `officeEmail`. Only users whose identifier has changed (or was previously
 * null) are updated to avoid unnecessary writes.
 *
 * Also refreshes the in-memory member cache used for name resolution.
 */
export const refreshCwIdentifiers = async () => {
  events.emit("cw:members:refresh:started");

  const allMembers = await fetchAllCwMembers();
  await setMemberCache(allMembers);
  const allUsers = await prisma.user.findMany({
    select: { id: true, email: true, cwIdentifier: true },
  });

  let updatedCount = 0;

  await Promise.all(
    allUsers.map(async (user) => {
      const identifier = await findCwIdentifierByEmail(user.email, allMembers);

      if (identifier !== user.cwIdentifier) {
        await prisma.user.update({
          where: { id: user.id },
          data: { cwIdentifier: identifier },
        });
        updatedCount++;
      }
    }),
  );

  events.emit("cw:members:refresh:completed", {
    totalMembers: allMembers.size,
    totalUsers: allUsers.length,
    usersUpdated: updatedCount,
  });
};