import type { APIRoute } from 'astro';

export const prerender = false;

const json = (body: unknown, status = 200) =>
  new Response(JSON.stringify(body), {
    status,
    headers: { 'Content-Type': 'application/json' },
  });

export const POST: APIRoute = async ({ request, locals }) => {
  const supabase = locals.supabase;
  let body: { email?: string; password?: string; fullName?: string };
  try {
    body = await request.json();
  } catch {
    return json({ error: 'bad_request' }, 400);
  }

  const { email, password, fullName } = body;
  if (!email || !password) {
    return json({ error: 'bad_request' }, 400);
  }

  const { data, error } = await supabase.auth.signUp({
    email,
    password,
    options: { data: { full_name: fullName || null } },
  });

  if (error) {
    const message = error.message?.toLowerCase() ?? '';
    const status = message.includes('already') ? 409 : 400;
    return json({ error: message.includes('already') ? 'email_exists' : 'generic' }, status);
  }

  return json({ ok: true, needsConfirmation: !data.session });
};