import { db } from '$lib/server/db';
import { fail, redirect, type Actions, type ServerLoad } from '@sveltejs/kit';
import { nanoid } from 'nanoid';

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

	const group = db.data.groups.find((g) => g.id === params.slug);

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

	return {
		devices: db.data.devices,
		group,
	};
};

export const actions: Actions = {
	update: async ({ request, locals: { guard }, params }) => {
		if (guard.requiresAdmin().isFailed()) {
			return fail(403);
		}

		const form = await request.formData();
		const name = form.get('name')?.toString();
		const devices = form.getAll('devices').map((d) => d.toString());

		if (!name) {
			// TODO better validation
			return {
				error: 'MISSING_FIELDS',
			};
		}

		if (params.slug === 'new') {
			await db.update(({ groups }) => {
				groups.push({
					id: nanoid(),
					name,
					devices,
				});
			});
		} else {
			await db.update(({ groups }) => {
				let group = groups.find((g) => g.id === params.slug);

				if (!group) {
					return;
				}

				group.name = name;
				group.devices = devices;
			});
		}

		redirect(302, '/dashboard/groups');
	},

	delete: async ({ locals: { guard }, params }) => {
		if (guard.requiresAdmin().isFailed()) {
			return fail(403);
		}

		db.data.groups = db.data.groups.filter((g) => g.id !== params.slug);
		db.data.users.forEach((u) => {
			u.groups = u.groups.filter((g) => g !== params.slug);
		});
		db.write();

		redirect(302, '/dashboard/groups');
	},
};