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feat: auto-detect Italian visitors via Accept-Language header
Replace manual language switcher button with automatic detection. Worker now checks Accept-Language header and 302 redirects Italian visitors to /it/ pages. Bots are excluded so both versions get indexed. Added run_worker_first to ensure worker processes all requests. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1 parent d54fb2e commit 441f8a6

7 files changed

Lines changed: 31 additions & 51 deletions

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‎index.html‎

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@@ -79,7 +79,6 @@
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<button class="nav-cta nav-cta-mobile" data-i18n="nav.cta">View Ecosystem</button>
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</div>
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<button class="nav-cta nav-cta-desktop" data-i18n="nav.cta">View Ecosystem</button>
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<a href="/it/" class="lang-switch" id="langSwitch">IT</a>
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<button class="nav-toggle" aria-label="Menu">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
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<line x1="4" y1="7" x2="20" y2="7"/><line x1="4" y1="12" x2="20" y2="12"/><line x1="4" y1="17" x2="20" y2="17"/>

‎src/main.js‎

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@@ -120,14 +120,3 @@ document.querySelectorAll('.nav-cta').forEach((btn) => {
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})
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})
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// LANGUAGE SWITCHER
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const langSwitch = document.getElementById('langSwitch')
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if (langSwitch) {
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const isItalian = document.documentElement.lang === 'it'
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if (isItalian) {
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langSwitch.textContent = 'EN'
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langSwitch.href = window.location.pathname.replace(/^\/it/, '') || '/'
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} else {
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langSwitch.href = '/it' + window.location.pathname
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}
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}

‎src/style.css‎

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@@ -92,17 +92,6 @@ nav.scrolled{
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box-shadow:0 0 20px rgba(62,207,142,0.3);
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transform:scale(1.03);
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}
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.lang-switch{
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font-size:11px;font-weight:500;letter-spacing:0.06em;
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color:var(--text-muted);text-decoration:none;
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padding:6px 10px;border:1px solid var(--border);border-radius:100px;
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transition:all 0.2s var(--ease);flex-shrink:0;
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margin-left:4px;
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}
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.lang-switch:hover{
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color:var(--text-primary);border-color:var(--border-hover);
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}
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/* HERO */
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.hero{
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min-height:100vh;display:flex;flex-direction:column;

‎src/worker.js‎

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@@ -4,6 +4,22 @@ const TRANSLATIONS = { it };
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const LANG_PREFIXES = Object.keys(TRANSLATIONS);
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const PAGE_PATHS = ['/', '/tools/n8n-cli/', '/tools/x-cli/'];
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// Bots that should NOT be auto-redirected (so they index both versions)
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const BOT_PATTERN = /bot|crawl|spider|slurp|facebookexternalhit|linkedinbot|twitterbot|whatsapp|telegram|embedly|quora|pinterest|redditbot|applebot|yandex|duckduckbot|baiduspider|sogou|semrush|ahrefs|mj12bot|dotbot|petalbot|bytespider|gptbot|chatgpt|anthropic|claude|perplexity/i;
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function isBot(request) {
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const ua = request.headers.get('user-agent') || '';
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return BOT_PATTERN.test(ua);
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}
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function prefersItalian(request) {
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const accept = request.headers.get('accept-language') || '';
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if (!accept) return false;
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// Parse first language in Accept-Language header
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const primary = accept.split(',')[0].trim().split(';')[0].trim();
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return primary.startsWith('it');
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}
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export default {
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async fetch(request, env) {
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const url = new URL(request.url);
@@ -22,16 +38,26 @@ export default {
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}
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// Redirect /it to /it/
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if (pathname === `/${lang}`) {
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if (lang && pathname === `/${lang}`) {
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return Response.redirect(`${url.origin}/${lang}/`, 301);
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}
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// No language prefix — serve English, inject hreflang on HTML
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// No language prefix — English page
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if (!lang) {
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// Auto-redirect Italian visitors to /it/ (skip bots)
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if (!isBot(request) && prefersItalian(request)) {
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const italianUrl = `${url.origin}/it${pathname}${url.search}`;
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return new Response(null, {
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status: 302,
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headers: { 'Location': italianUrl, 'Vary': 'Accept-Language' },
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});
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}
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const response = await env.ASSETS.fetch(request);
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const ct = response.headers.get('content-type') || '';
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if (!ct.includes('text/html')) return response;
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// Inject hreflang tags into English pages
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return new HTMLRewriter()
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.on('head', new HreflangInjector(pathname))
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.transform(response);
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const headers = new Headers(transformed.headers);
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headers.set('Content-Language', lang);
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headers.set('Vary', 'Accept-Language');
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return new Response(transformed.body, {
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status: transformed.status,
@@ -119,7 +146,6 @@ class HeadTransformer {
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this.translations = translations;
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}
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element(el) {
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// Inject hreflang tags
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el.append(
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`\n<link rel="alternate" hreflang="en" href="https://gladium.ai${this.path}">`,
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{ html: true }

‎tools/n8n-cli/index.html‎

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<button class="nav-cta nav-cta-mobile" data-i18n="nav.cta" onclick="window.location.href='/#open-source'">View Ecosystem</button>
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</div>
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<button class="nav-cta nav-cta-desktop" data-i18n="nav.cta" onclick="window.location.href='/#open-source'">View Ecosystem</button>
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<a href="/it/" class="lang-switch" id="langSwitch">IT</a>
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<button class="nav-toggle" aria-label="Menu">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
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<line x1="4" y1="7" x2="20" y2="7"/><line x1="4" y1="12" x2="20" y2="12"/><line x1="4" y1="17" x2="20" y2="17"/>
@@ -378,17 +377,6 @@ <h4 data-i18n="tool.footer.opensource">Open Source</h4>
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)
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reveals.forEach((el) => observer.observe(el))
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// LANGUAGE SWITCHER
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const langSwitch = document.getElementById('langSwitch')
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if (langSwitch) {
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const isItalian = document.documentElement.lang === 'it'
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if (isItalian) {
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langSwitch.textContent = 'EN'
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langSwitch.href = window.location.pathname.replace(/^\/it/, '') || '/'
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} else {
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langSwitch.href = '/it' + window.location.pathname
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}
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}
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</script>
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</body>
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</html>

‎tools/x-cli/index.html‎

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<button class="nav-cta nav-cta-mobile" data-i18n="nav.cta" onclick="window.location.href='/#open-source'">View Ecosystem</button>
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</div>
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<button class="nav-cta nav-cta-desktop" data-i18n="nav.cta" onclick="window.location.href='/#open-source'">View Ecosystem</button>
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<a href="/it/" class="lang-switch" id="langSwitch">IT</a>
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<button class="nav-toggle" aria-label="Menu">
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<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
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<line x1="4" y1="7" x2="20" y2="7"/><line x1="4" y1="12" x2="20" y2="12"/><line x1="4" y1="17" x2="20" y2="17"/>
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)
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reveals.forEach((el) => observer.observe(el))
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// LANGUAGE SWITCHER
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const langSwitch = document.getElementById('langSwitch')
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if (langSwitch) {
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const isItalian = document.documentElement.lang === 'it'
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if (isItalian) {
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langSwitch.textContent = 'EN'
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langSwitch.href = window.location.pathname.replace(/^\/it/, '') || '/'
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} else {
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langSwitch.href = '/it' + window.location.pathname
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}
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}
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</script>
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</body>
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</html>

‎wrangler.jsonc‎

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"main": "src/worker.js",
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"assets": {
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"directory": "./dist",
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"binding": "ASSETS"
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"binding": "ASSETS",
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"run_worker_first": true
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}
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}

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