import type { RequestHandler } from './$types';
import { json, error, isHttpError } from '@sveltejs/kit';
import { z } from 'zod';
import { getDb } from '$lib/server/db';
import { parsePositiveIntParam, validateBody } from '$lib/server/api-helpers';
import {
  removeDomain,
  updateDomain,
  setDomainFavicon
} from '$lib/server/domains/repository';
import { fetchAndStoreFavicon } from '$lib/server/domains/favicons';
import { IMAGE_DIR } from '$lib/server/paths';

const UpdateSchema = z.object({
  domain: z.string().min(3).max(253).optional(),
  display_name: z.string().max(100).nullable().optional()
});

export const PATCH: RequestHandler = async ({ params, request }) => {
  const id = parsePositiveIntParam(params.id, 'id');
  const data = validateBody(await request.json().catch(() => null), UpdateSchema);
  try {
    const db = getDb();
    const updated = updateDomain(db, id, data);
    if (!updated) error(404, { message: 'Not found' });
    // Wenn updateDomain favicon_path genullt hat (Domain geändert), frisch laden.
    if (updated.favicon_path === null) {
      const path = await fetchAndStoreFavicon(updated.domain, IMAGE_DIR);
      if (path) {
        setDomainFavicon(db, updated.id, path);
        updated.favicon_path = path;
      }
    }
    return json(updated);
  } catch (e) {
    // HTTP-Errors aus error() durchreichen, sonst landet ein 404 als 409.
    if (isHttpError(e)) throw e;
    error(409, { message: (e as Error).message });
  }
};

export const DELETE: RequestHandler = async ({ params }) => {
  const id = parsePositiveIntParam(params.id, 'id');
  removeDomain(getDb(), id);
  return json({ ok: true });
};