import { fail } from '@sveltejs/kit';
import type { Actions, PageServerLoad } from './$types';
import { saveImage, deleteUpload } from '$lib/server/storage';
import { addBannerImage, deleteBannerImage, listBannerImages, moveBanner } from '$lib/server/content';

export const load: PageServerLoad = () => ({
	images: listBannerImages().map((i) => ({ id: i.id, url: `/uploads/${i.imagePath}` }))
});

export const actions: Actions = {
	upload: async ({ request }) => {
		const form = await request.formData();
		const files = form
			.getAll('images')
			.filter((e): e is File => e instanceof File && e.size > 0);
		if (files.length === 0) return fail(400, { error: 'Izberite vsaj eno sliko.' });
		for (const file of files) {
			addBannerImage(await saveImage('banner', file));
		}
		return { success: `Naloženih slik: ${files.length}.` };
	},

	delete: async ({ request }) => {
		const form = await request.formData();
		const path = deleteBannerImage(String(form.get('id') ?? ''));
		if (path) deleteUpload(path);
		return { success: 'Slika izbrisana.' };
	},

	move: async ({ request }) => {
		const form = await request.formData();
		moveBanner(String(form.get('id') ?? ''), form.get('dir') === 'up' ? 'up' : 'down');
		return { success: null };
	}
};