fix: add error handling for theme and language parsing in hooks

Author: devlulcas

src/hooks.server.ts

@@ -3,10 +3,16 @@ import { sequence } from '@sveltejs/kit/hooks';
 
 // * Theme event handler, gets the data from the event and then return the user theme
 const themeHookHandle: Handle = ({ event, resolve }) => {
-	const newTheme = event.url.searchParams.get('theme');
-	const currentTheme = event.cookies.get('theme');
-	const selectedTheme = newTheme || currentTheme || 'dark';
-	const theme = selectedTheme === 'dark' ? 'dark' : 'light';
+	let theme: 'dark' | 'light' = 'dark';
+
+	try {
+		const newTheme = event.url.searchParams.get('theme');
+		const currentTheme = event.cookies.get('theme');
+		const selectedTheme = newTheme || currentTheme || 'dark';
+		theme = selectedTheme === 'dark' ? 'dark' : 'light';
+	} catch (error) {
+		console.error('Error parsing theme:', error);
+	}
 
 	return resolve(event, {
 		transformPageChunk: ({ html }) => {
@@ -18,15 +24,20 @@ const themeHookHandle: Handle = ({ event, resolve }) => {
 
 // * i18n event handler, gets the data from the event and then return the user language
 const i18nHookHandle: Handle = ({ event, resolve }) => {
-	const acceptLanguageHeader = event.request.headers.get('accept-language');
-
-	// Get the default language from the browser
-	const defaultLanguage = acceptLanguageHeader?.split(',')[0].split('-')[0];
-	const newLanguageSetting = event.url.searchParams.get('lang');
-	const currentLanguageSetting = event.cookies.get('lang');
-	// Pick language by priority
-	const selectedLang = newLanguageSetting || currentLanguageSetting || defaultLanguage || 'en';
-	const lang = selectedLang === 'pt' ? 'pt' : 'en';
+	let lang = 'en';
+
+	try {
+		const acceptLanguageHeader = event.request.headers.get('accept-language');
+		// Get the default language from the browser
+		const defaultLanguage = acceptLanguageHeader?.split(',')[0].split('-')[0];
+		const newLanguageSetting = event.url.searchParams.get('lang');
+		const currentLanguageSetting = event.cookies.get('lang');
+		// Pick language by priority
+		const selectedLang = newLanguageSetting || currentLanguageSetting || defaultLanguage || 'en';
+		lang = selectedLang === 'pt' ? 'pt' : 'en'
+	} catch (error) {
+		console.error('Error parsing language:', error);
+	}
 
 	// Set the cookie for the selected language
 	event.cookies.set('lang', lang, {