import { FORBIDDEN, PARSE_ERROR, SUCCESS } from '$lib/server/commonResponses';
import { devices, groups } from '$lib/server/db';
import { redirect, type Actions, type ServerLoad } from '@sveltejs/kit';
import { decode } from 'decode-formdata';
import { z } from 'zod';

export const load: ServerLoad = async ({ locals: { guard }, params }) => {
  guard.requiresAdmin().orRedirects();

  const group = await groups.getById(params.id ?? '');

  if (!group && params.id !== 'new') {
    redirect(302, '/dash/groups');
  }

  return {
    devices: await devices.getAll(),
    group,
  };
};

export const actions = {
  update: async ({ request, locals: { guard }, params }) => {
    if (guard.requiresAdmin().isFailed()) return FORBIDDEN;

    const schema = z.object({
      name: z
        .string({ message: 'Name is required.' })
        .min(3, { message: 'Name must be at least 3 characters.' })
        .max(24, { message: 'Name must be at most 24 characters.' }),
      devices: z.array(z.string()),
    });

    const parsed = schema.safeParse(
      decode(await request.formData(), {
        arrays: ['devices'],
      }),
    );

    if (!parsed.success) {
      return PARSE_ERROR(parsed.error);
    }

    const err =
      params.id === 'new'
        ? await groups.create({ ...parsed.data })
        : await groups.update({ id: params.id ?? '', ...parsed.data });

    return err ? err.toFail() : SUCCESS;
  },

  delete: async ({ locals: { guard }, params }) => {
    if (guard.requiresAdmin().isFailed()) return FORBIDDEN;

    const err = await groups.delete(params.id ?? '');
    return err ? err.toFail() : SUCCESS;
  },
} satisfies Actions;