import { requireAdmin } from '#lib/server/authorization.js';
import { uniqueListSlug } from '#lib/server/slugify.js';
import { listImageUrl } from '#lib/server/r2.js';
import { createList, listSummaries } from '#lib/server/lists.js';
import { listTables, type TableSummary } from '#lib/server/data-editor.js';
import { isOwner } from '#lib/server/owner.js';
import { fail, redirect } from '@sveltejs/kit';
import type { Actions, PageServerLoad } from './$types';

export const load: PageServerLoad = async (event) => {
	const owner = isOwner(event);
	// The database browser (every schema/table) is only ever loaded for the owner.
	const [lists, tables] = await Promise.all([
		listSummaries(),
		owner ? listTables() : Promise.resolve([] as TableSummary[])
	]);
	if (owner) event.setHeaders({ 'cache-control': 'private, no-store' });
	return { lists, tables };
};

export const actions: Actions = {
	newList: async (event) => {
		requireAdmin(event);
		const form = await event.request.formData();
		const name = String(form.get('name') ?? '').trim();
		const type = String(form.get('type') ?? '');
		const pictureKey = String(form.get('pictureKey') ?? '').trim();
		const picture = form.get('picture');
		if (!name || name.length > 200)
			return fail(400, { message: 'Enter a list name of 1–200 characters.' });
		if (type !== 'normal' && type !== 'progress')
			return fail(400, { message: 'Choose a list type.' });
		if (picture instanceof File && picture.size > 0)
			return fail(400, { message: 'Enable JavaScript to upload an image.' });
		const pictureUrl = pictureKey ? listImageUrl(pictureKey) : null;
		if (pictureKey && !pictureUrl) return fail(400, { message: 'Invalid uploaded picture.' });
		// meta.tables.slug allows at most 63 characters
		const slug = (await uniqueListSlug(name.slice(0, 60))).slice(0, 63).replace(/-+$/, '');
		await createList({ slug, name, isProgress: type === 'progress', pictureUrl });
		redirect(303, `/lists/${slug}`);
	}
};