Fix locale-related bugs and test it with screenshots

playwright.screenshot.config.ts

@@ -34,9 +34,17 @@ export default defineConfig({
 			}
 		},
 		{
-			name: 'MacBook Pro 14 inch',
+			name: 'MacBook Pro 14 inch NL locale',
 			use: {
-				viewport: { width: 1512, height: 982 }
+				viewport: { width: 1512, height: 982 },
+				locale: 'nl'
+			}
+		},
+		{
+			name: 'MacBook Pro 14 inch nl-NL locale',
+			use: {
+				viewport: { width: 1512, height: 982 },
+				locale: 'nl-NL'
 			}
 		},
 		{

src/lib/i18n/index.ts

@@ -8,11 +8,23 @@ register('nl', () => import('../locales/nl.json'));
 register('es', () => import('../locales/es.json'));
 register('de', () => import('../locales/de.json'));
 
+const getInitialLocale = () => {
+	if (!browser) return defaultLocale;
+
+	// Check localStorage first
+	const storedLocale = localStorage.getItem('locale');
+	if (storedLocale) return storedLocale;
+
+	// Get browser locale and normalize it
+	const browserLocale = window.navigator.language;
+	const normalizedLocale = browserLocale.split('-')[0].toLowerCase();
+
+	// Check if we support this locale
+	const supportedLocales = ['en', 'nl', 'es', 'de'];
+	return supportedLocales.includes(normalizedLocale) ? normalizedLocale : defaultLocale;
+};
+
 init({
 	fallbackLocale: defaultLocale,
-	initialLocale: browser
+	initialLocale: getInitialLocale()
-		? browser && localStorage.getItem('locale')
-			? localStorage.getItem('locale')
-			: window.navigator.language.slice(0, 2)
-		: defaultLocale
 });

src/routes/+layout.svelte

@@ -17,6 +17,7 @@
 	import { page } from '$app/stores';
 	import { locale, locales, isLoading } from 'svelte-i18n';
 	import { ColorSchemeSwitcher } from '$lib/components';
+	import { derived } from 'svelte/store';
 
 	export const setLocale = (lang: string) => () => {
 		locale.set(lang);
@@ -45,13 +46,14 @@
 
 	let languageNames = {};
 
+	const currentLocale = derived(locale, ($locale) => $locale || 'en');
+
 	locale.subscribe(() => {
-		if ($locale) {
+		const localeToUse = $locale || 'en';
-			let newLanguageNames = new Intl.DisplayNames([$locale], { type: 'language' });
+		let newLanguageNames = new Intl.DisplayNames([localeToUse], { type: 'language' });
 
 		for (let l of $locales) {
-				languageNames[l] = newLanguageNames.of(l);
+			languageNames[l] = newLanguageNames.of(l) || l;
-			}
 		}
 	});
 
@@ -95,7 +97,10 @@
 		</Nav>
 		{#if !$isLoading}
 			<Dropdown id="nav-language-dropdown" inNavbar class="me-3">
-				<DropdownToggle nav caret>{getFlagEmoji($locale)} {languageNames[$locale]}</DropdownToggle>
+				<DropdownToggle nav caret
+					>{getFlagEmoji($currentLocale)}
+					{languageNames[$currentLocale] || 'English'}</DropdownToggle
+				>
 				<DropdownMenu end>
 					{#each $locales as locale}
 						<DropdownItem on:click={setLocale(locale)}

src/routes/+layout.ts

@@ -6,10 +6,15 @@ import { locale, waitLocale } from 'svelte-i18n';
 import type { LayoutLoad } from './$types';
 
 export const load: LayoutLoad = async () => {
-	if (browser && localStorage.getItem('locale')) {
+	if (browser) {
+		if (localStorage.getItem('locale')) {
 			locale.set(localStorage.getItem('locale'));
-	} else if (browser) {
+		} else {
-		locale.set(window.navigator.language);
+			// Normalize the browser locale
+			const browserLocale = window.navigator.language.split('-')[0].toLowerCase();
+			const supportedLocales = ['en', 'nl', 'es', 'de'];
+			locale.set(supportedLocales.includes(browserLocale) ? browserLocale : 'en');
+		}
 	}
 	await waitLocale();
 };

tests/screenshots/viewport-screenshots.spec.ts

@@ -4,11 +4,47 @@ import { initMock, settingsJson, statusJson } from '../shared';
 
 test.beforeEach(initMock);
 
+// Define the translations for the headings
+const headings = {
+	en: {
+		control: 'Control',
+		status: 'Status',
+		settings: 'Settings',
+		language: 'English'
+	},
+	de: {
+		control: 'Steuerung',
+		status: 'Status',
+		settings: 'Einstellungen',
+		language: 'Deutsch'
+	},
+	nl: {
+		control: 'Besturing',
+		status: 'Status',
+		settings: 'Instellingen',
+		language: 'Nederlands'
+	},
+	es: {
+		control: 'Control',
+		status: 'Estado',
+		settings: 'Ajustes',
+		language: 'Español'
+	}
+};
+
 test('capture screenshots across devices', async ({ page }, testInfo) => {
+	// Get the locale from the browser or default to 'en'
+	const locale = testInfo.project.use?.locale?.split('-')[0].toLowerCase() || 'en';
+	const translations = headings[locale] || headings.en;
+
 	await page.goto('/');
-	await expect(page.getByRole('heading', { name: 'Control' })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.control })).toBeVisible();
-	await expect(page.getByRole('heading', { name: 'Status' })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.status })).toBeVisible();
-	await expect(page.getByRole('heading', { name: 'Settings' })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.settings })).toBeVisible();
+
+	if (await page.locator('#nav-language-dropdown').isVisible()) {
+		await expect(page.getByRole('link', { name: translations.language })).toBeVisible();
+	}
 
 	const screenshot = await page.screenshot({
 		path: `./test-results/screenshots/default-${test.info().project.name.toLowerCase().replace(' ', '_')}.png`
@@ -21,6 +57,9 @@ test('capture screenshots across devices', async ({ page }, testInfo) => {
 });
 
 test('capture screenshots across devices with bitaxe screens', async ({ page }, testInfo) => {
+	const locale = testInfo.project.use?.locale?.split('-')[0].toLowerCase() || 'en';
+	const translations = headings[locale] || headings.en;
+
 	settingsJson.screens = [
 		{
 			id: 0,
@@ -73,9 +112,14 @@ test('capture screenshots across devices with bitaxe screens', async ({ page },
 	statusJson.rendered = ['mdi:bitaxe', '', 'mdi:pickaxe', '6', '3', '7', 'GH/S'];
 
 	await page.goto('/');
-	await expect(page.getByRole('heading', { name: 'Control' })).toBeVisible();
+
-	await expect(page.getByRole('heading', { name: 'Status' })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.control })).toBeVisible();
-	await expect(page.getByRole('heading', { name: 'Settings' })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.status })).toBeVisible();
+	await expect(page.getByRole('heading', { name: translations.settings })).toBeVisible();
+
+	if (await page.locator('#nav-language-dropdown').isVisible()) {
+		await expect(page.getByRole('link', { name: translations.language })).toBeVisible();
+	}
 
 	await page.screenshot({
 		path: `./test-results/screenshots/bitaxe-${test.info().project.name.toLowerCase().replace(' ', '_')}.png`

vite.config.ts

@@ -1,5 +1,5 @@
 import { sveltekit } from '@sveltejs/kit/vite';
-import { defineConfig } from 'vitest/config';
+import { defineConfig } from 'vite';
 import GithubActionsReporter from 'vitest-github-actions-reporter';
 // import { visualizer } from 'rollup-plugin-visualizer';
 
@@ -102,5 +102,8 @@ export default defineConfig({
 		globals: true,
 		environment: 'jsdom',
 		reporters: process.env.GITHUB_ACTIONS ? ['default', new GithubActionsReporter()] : 'default'
+	},
+	define: {
+		'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
 	}
 });