import { error, redirect } from '@sveltejs/kit';
import { env } from '$env/dynamic/private';
import { createApiClient } from '$lib/api.server';
import { getErrorMessage } from '$lib/errors';

export async function load({ params, fetch }) {
	const { id } = params;
	const api = createApiClient(fetch);
	const base = env.API_INTERNAL_URL || 'http://localhost:8080';

	const [docResult, commentsRes] = await Promise.all([
		api.GET('/api/documents/{id}', { params: { path: { id } } }),
		fetch(`${base}/api/documents/${id}/comments`).catch(() => null)
	]);

	if (docResult.response.status === 401) throw redirect(302, '/login');

	if (!docResult.response.ok) {
		const code = (docResult.error as unknown as { code?: string })?.code;
		throw error(docResult.response.status, getErrorMessage(code));
	}

	let comments: unknown[] = [];
	if (commentsRes?.ok) {
		try {
			comments = await commentsRes.json();
		} catch {
			// ignore invalid response
		}
	}

	return { document: docResult.data!, comments };
}