import type { RequestHandler } from './$types';
import { json, error } from '@sveltejs/kit';
import { z } from 'zod';
import { getDb } from '$lib/server/db';
import { addDomain, listDomains, setDomainFavicon } from '$lib/server/domains/repository';
import { ensureFavicons, fetchAndStoreFavicon } from '$lib/server/domains/favicons';

const CreateSchema = z.object({
  domain: z.string().min(3).max(253),
  display_name: z.string().max(100).nullable().optional(),
  added_by_profile_id: z.number().int().positive().nullable().optional()
});

const IMAGE_DIR = process.env.IMAGE_DIR ?? './data/images';

export const GET: RequestHandler = async () => {
  const db = getDb();
  // Favicons lazy nachziehen — beim zweiten Aufruf gibt es nichts mehr zu tun.
  await ensureFavicons(db, IMAGE_DIR);
  return json(listDomains(db));
};

export const POST: RequestHandler = async ({ request }) => {
  const body = await request.json().catch(() => null);
  const parsed = CreateSchema.safeParse(body);
  if (!parsed.success) error(400, { message: 'Invalid body' });
  try {
    const db = getDb();
    const d = addDomain(
      db,
      parsed.data.domain,
      parsed.data.display_name ?? null,
      parsed.data.added_by_profile_id ?? null
    );
    // Favicon direkt nach dem Insert mitziehen, damit die Antwort schon das
    // Icon enthält — der POST ist eh ein interaktiver Admin-Vorgang.
    const favicon = await fetchAndStoreFavicon(d.domain, IMAGE_DIR);
    if (favicon) {
      setDomainFavicon(db, d.id, favicon);
      d.favicon_path = favicon;
    }
    return json(d, { status: 201 });
  } catch (e) {
    error(409, { message: (e as Error).message });
  }
};