import type { Handler } from 'hono';
import { getUserCount, createUser } from 'officerdb';
import { sign } from '@@/jwt';
import type { USER_ROLES, USER_STATUSES } from 'definitions';
import * as errors from '@@/custom-errors';
import { sendMail } from 'emailer';

export const signupHandler: Handler = async function (ctx) {
  const body = ctx.get('body');
  const origin = ctx.get('origin');

  if (!body.email || !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(body.email)) {
    throw errors.BAD_REQUEST('Invalid email address');
  }

  const userCount = getUserCount();
  if (userCount > 0) throw errors.FORBIDDEN('Registration is closed');

  const dbUser = await createUser({
    email: body.email as string,
    status: 'Unverified' as (typeof USER_STATUSES)[number],
    role: 'Admin' as (typeof USER_ROLES)[number],
  });

  const verificationCode = await sign({ id: dbUser.id, email: dbUser.email }, '24h');
  const url = `${origin}/auth/verify?verificationCode=${verificationCode}`;

  await sendMail({
    template: 'VerifyAdmin',
    subject: 'Verify your officer.dev account',
    to: dbUser.email,
    data: { name: dbUser.email, url },
  });

  return ctx.json({ ok: true, user: { id: dbUser.id, email: dbUser.email } });
};