/registration, login, reset
"use server";
import { PrismaClient } from "@prisma/client";
import { generateId } from "lucia";
import { cookies } from "next/headers";
import { redirect } from "next/navigation";
import { Argon2id } from "oslo/password";
import lucia from "../actions/auth";

const prisma = new PrismaClient();

interface ActionResult {
  error: string;
}

export const register = async (e: React.MouseEvent<HTMLButtonElement>, form: FormData): Promise<ActionResult> => {
  let email: FormDataEntryValue | null = form.get("email");
  let username: FormDataEntryValue | null = form.get("username");
  let password: FormDataEntryValue | null = form.get("password");

  e.preventDefault();

  const hashedPassword = await new Argon2id().hash(password as string);
  const userId = generateId(15);

  ///check if username/email is already used
  const checkEmail = await prisma.user.findFirst({
    where: {
      email: email as string,
    },
  });

  const checkUsername = await prisma.user.findFirst({
    where: {
      username: username as string,
    },
  });

  if (!checkEmail) {
    return { error: "Email already in use" };
  }

  if (!checkUsername) {
    return { error: "Username already in use" };
  }

  await prisma.user.create({
    data: {
      id: userId,
      email: email as string,
      username: username as string,
      hashed_password: hashedPassword,
    },
  });

  const session = await lucia.createSession(userId, {});
  const sessionCookie = lucia.createSessionCookie(session.id);
  cookies().set(
    sessionCookie.name,
    sessionCookie.value,
    sessionCookie.attributes
  );

  return redirect("/");
};