// POST /api/settings — validate and persist user account settings.

import type { Request, Response } from "express";

import { db } from "../db";

const EMAIL_REGEX = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;

export async function updateSettingsHandler(

  req: Request,

  res: Response,

): Promise<void> {

  const { userId, displayName, email } = req.body as {

    userId: string;

    displayName: string;

    email: string;

  };

  if (!userId || !displayName || !email) {

    res.status(400).json({ error: "Missing required fields" });

    return;

  }

  const updated = db.users.update(userId, { displayName, email });

  res.status(200).json({ user: updated });

}