import { redirect } from '@sveltejs/kit';
import type { LayoutServerLoad } from './$types';
import { getSettings } from '$lib/server/pocketbase';
import { log } from '$lib/server/logger';

// Routes that are accessible without being logged in
const PUBLIC_ROUTES = new Set(['/login', '/disclaimer', '/privacy', '/dmca', '/terms', '/catalogue']);

export const load: LayoutServerLoad = async ({ locals, url, cookies }) => {
	// Allow public routes, /auth/*, and all book-browsing URLs (/books/[slug] and deeper)
	// Note: /books (the personal library) is intentionally NOT public
	const isPublic =
		PUBLIC_ROUTES.has(url.pathname) ||
		url.pathname.startsWith('/auth/') ||
		url.pathname.startsWith('/books/');
	if (!isPublic && !locals.user) {
		redirect(302, `/login`);
	}

	let settings = { autoNext: false, voice: 'af_bella', speed: 1.0, theme: 'amber', locale: 'en', fontFamily: 'system', fontSize: 1.0, announceChapter: false, audioMode: 'stream' };
	try {
		const row = await getSettings(locals.sessionId, locals.user?.id);
		if (row) {
			settings = {
				autoNext: row.auto_next ?? false,
				voice: row.voice ?? 'af_bella',
				speed: row.speed ?? 1.0,
				theme: row.theme ?? 'amber',
				locale: row.locale ?? 'en',
				fontFamily: row.font_family ?? 'system',
				fontSize: row.font_size || 1.0,
				announceChapter: row.announce_chapter ?? false,
				audioMode: row.audio_mode ?? 'stream'
			};
		}
	} catch (e) {
		log.warn('layout', 'failed to load settings', { err: String(e) });
	}

	// If user is logged in, keep the PARAGLIDE_LOCALE cookie in sync with
	// the saved locale so it persists across page loads and navigations.
	if (locals.user) {
		const savedLocale = settings.locale ?? 'en';
		const currentCookieLocale = cookies.get('PARAGLIDE_LOCALE');
		if (savedLocale === 'en') {
			// Clear the cookie when the user's locale is English (the default)
			if (currentCookieLocale) {
				cookies.delete('PARAGLIDE_LOCALE', { path: '/' });
			}
		} else if (currentCookieLocale !== savedLocale) {
			cookies.set('PARAGLIDE_LOCALE', savedLocale, {
				path: '/',
				maxAge: 34560000,
				sameSite: 'lax',
				httpOnly: false
			});
		}
	}

	return {
		user: locals.user,
		isPro: locals.isPro,
		settings
	};
};