feat: enhance routing and theme management, add error handling and improve cookie consent styles

src/App.svelte

@@ -11,56 +11,83 @@
     import ErrorGeneric from "./pages/errore.svelte";
     import NotFound from "./pages/404.svelte";
     import { initializeStoredConsent } from "./lib/cookieConsent";
+    import { applyTheme, getSavedTheme } from "./lib/theme";
+    import { getErrorPath, resolvePathname } from "./lib/errorRouting";
 
-    let pathname = '/'
+    let pathname = typeof window !== 'undefined' ? window.location.pathname : '/'
-
-    const normalizePath = (path) => {
-        if (!path) return '/'
-        const trimmed = path.trim()
-        return trimmed.endsWith('/') && trimmed.length > 1
-            ? trimmed.slice(0, -1)
-            : trimmed
-    }
 
     const getRoute = (path) => {
-        const normalized = normalizePath(path)
+        const normalized = resolvePathname(path)
 
         if (normalized === '/') return 'home'
         if (normalized === '/contatti' || normalized === '/contacts') return 'contacts'
         if (normalized === '/403') return '403'
+        if (normalized === '/404') return '404'
         if (normalized === '/500') return '500'
         if (normalized === '/errore') return 'error'
-        return '404'
+        return 'error'
     }
 
     let currentRoute = $derived(getRoute(pathname))
     let isCenteredMain = $derived(['403', '404', '500', 'error'].includes(currentRoute))
 
+    const navigateTo = (targetPath, replace = false) => {
+        const resolved = resolvePathname(targetPath)
+        const current = resolvePathname(window.location.pathname)
+        if (resolved === current) {
+            pathname = resolved
+            return
+        }
+
+        if (replace) {
+            window.history.replaceState({}, '', resolved)
+        } else {
+            window.history.pushState({}, '', resolved)
+        }
+        pathname = resolved
+    }
+
+    const syncRouteFromLocation = () => {
+        const resolved = resolvePathname(window.location.pathname)
+        if (resolved !== window.location.pathname) {
+            window.history.replaceState({}, '', resolved)
+        }
+        pathname = resolved
+    }
+
     onMount(() => {
         initializeStoredConsent()
 
         try {
-            const saved = localStorage.getItem('theme')
+            const saved = getSavedTheme()
             if (saved) {
-                document.documentElement.setAttribute('data-theme', saved)
+                applyTheme(saved)
             } else {
                 const prefersDark = window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches
                 const theme = prefersDark ? 'dark' : 'light'
-                document.documentElement.setAttribute('data-theme', theme)
+                applyTheme(theme)
-                localStorage.setItem('theme', theme)
             }
         } catch (e) {
             document.documentElement.setAttribute('data-theme', 'light')
         }
 
-        pathname = window.location.pathname
+        syncRouteFromLocation()
 
         const handlePopstate = () => {
-            pathname = window.location.pathname
+            syncRouteFromLocation()
+        }
+
+        const handleErrorRedirect = (event) => {
+            const code = event?.detail?.code ?? event?.detail?.status
+            navigateTo(getErrorPath(code))
         }
 
         window.addEventListener('popstate', handlePopstate)
-        return () => window.removeEventListener('popstate', handlePopstate)
+        window.addEventListener('app:error-redirect', handleErrorRedirect)
+        return () => {
+            window.removeEventListener('popstate', handlePopstate)
+            window.removeEventListener('app:error-redirect', handleErrorRedirect)
+        }
     })
 </script>
 

src/components/CookiePopUp/CookiePopUp.css

@@ -26,14 +26,8 @@
 	border: 2px solid rgba(127, 127, 127, 0.3);
 }
 
-.cookie-popup-container {
-	display: flex;
-	flex-direction: column;
-	gap: 16px;
-}
-
 .cookie-popup-content p {
-	margin: 10px 0 15px;
+	margin: 15px 0 15px;
 }
 
 .cookie-popup-title {
@@ -100,6 +94,22 @@
     min-width: fit-content;
 }
 
+.cookie-toggle-item {
+    cursor: pointer;
+    display: flex;
+	align-items: center;
+    padding: 8px 0;
+    margin: 0;
+}
+
+.cookie-toggle-item .toggle {
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    flex: 1;
+    width: 100%;
+}
+
 .cookie-selector p {
     margin: 0 0 5px;
 }

src/components/ThemeToggle/ThemeToggle.svelte

@@ -1,37 +1,33 @@
 <script>
     import { onMount } from "svelte";
     import "./ThemeToggle.css";
+    import { applyTheme as persistTheme, getSavedTheme } from "../../lib/theme";
 
     let theme = "light";
 
-    function applyTheme(t) {
+    function setTheme(t) {
         theme = t;
-        try {
+        persistTheme(t);
-            document.documentElement.setAttribute("data-theme", t);
-            localStorage.setItem("theme", t);
-        } catch (e) {
-            // ignore in SSR or restricted environments
-        }
     }
 
     function toggle() {
-        applyTheme(theme === "dark" ? "light" : "dark");
+        setTheme(theme === "dark" ? "light" : "dark");
     }
 
     onMount(() => {
         try {
-            const saved = localStorage.getItem("theme");
+            const saved = getSavedTheme();
             if (saved) {
-                applyTheme(saved);
+                setTheme(saved);
                 return;
             }
             const prefersDark =
                 window.matchMedia &&
                 window.matchMedia("(prefers-color-scheme: dark)").matches;
-            applyTheme(prefersDark ? "dark" : "light");
+            setTheme(prefersDark ? "dark" : "light");
         } catch (e) {
             // safe fallback
-            applyTheme("light");
+            setTheme("light");
         }
     });
 </script>

src/components/Toggle/Toggle.css

@@ -14,7 +14,7 @@
     padding: 0;
     cursor: pointer;
     display: inline-flex;
-    align-items: flex-start;
+    align-items: center;
     gap: 12px;
 }
 
@@ -68,6 +68,7 @@
     display: flex;
     flex-direction: column;
     gap: 4px;
+    justify-content: center;
 }
 
 .toggle-label {
@@ -84,15 +85,3 @@
     color: var(--muted-color, rgba(0, 0, 0, 0.6));
     line-height: 1.4;
 }
-
-.cookie-toggle-item {
-    cursor: pointer;
-    display: flex;
-    padding: 8px 0;
-    margin: 0;
-}
-
-.cookie-toggle-item .toggle {
-    flex: 1;
-    width: 100%;
-}

src/lib/errorRouting.js

@@ -0,0 +1,38 @@
+const KNOWN_PATHS = new Set([
+    '/',
+    '/contatti',
+    '/contacts',
+    '/403',
+    '/404',
+    '/500',
+    '/errore'
+])
+
+const PATH_ALIASES = {
+    '/assistenza': '/contatti',
+    '/supporto': '/contatti',
+    '/error': '/errore'
+}
+
+export const normalizePathname = (path) => {
+    if (!path) return '/'
+    const trimmed = String(path).trim()
+    if (!trimmed) return '/'
+    return trimmed.endsWith('/') && trimmed.length > 1 ? trimmed.slice(0, -1) : trimmed
+}
+
+export const resolvePathname = (path) => {
+    const normalized = normalizePathname(path)
+    const alias = PATH_ALIASES[normalized]
+    if (alias) return alias
+    if (KNOWN_PATHS.has(normalized)) return normalized
+    return '/404'
+}
+
+export const getErrorPath = (statusOrCode) => {
+    const code = String(statusOrCode ?? '').trim()
+    if (code === '403') return '/403'
+    if (code === '404') return '/404'
+    if (code === '500') return '/500'
+    return '/errore'
+}

src/lib/theme.js

@@ -0,0 +1,40 @@
+const THEME_KEY = 'theme'
+const THEME_COOKIE_MAX_AGE = 60 * 60 * 24 * 365
+
+export const getSavedTheme = () => {
+    if (typeof window === 'undefined') return null
+
+    try {
+        const stored = localStorage.getItem(THEME_KEY)
+        if (stored === 'dark' || stored === 'light') return stored
+
+        const cookieTheme = document.cookie
+            .split('; ')
+            .find((entry) => entry.startsWith(`${THEME_KEY}=`))
+            ?.split('=')[1]
+
+        if (cookieTheme === 'dark' || cookieTheme === 'light') return cookieTheme
+    } catch {
+        // ignore storage access issues
+    }
+
+    return null
+}
+
+export const saveTheme = (theme) => {
+    if (typeof window === 'undefined') return
+
+    try {
+        localStorage.setItem(THEME_KEY, theme)
+        document.cookie = `${THEME_KEY}=${theme}; path=/; max-age=${THEME_COOKIE_MAX_AGE}; SameSite=Lax`
+    } catch {
+        // ignore storage access issues
+    }
+}
+
+export const applyTheme = (theme) => {
+    if (typeof document === 'undefined') return
+
+    document.documentElement.setAttribute('data-theme', theme)
+    saveTheme(theme)
+}

src/pages/403.svelte

@@ -16,7 +16,7 @@
         </div>
         <div class="button-container">
             <Button text="HOME" href="/" />
-            <Button text="ASSISTENZA" href="/assistenza" borderWidth="3px" color="transparent" />
+            <Button text="ASSISTENZA" href="/contatti" borderWidth="3px" color="transparent" />
         </div>
     </div>
     <div class="error-background">

src/styles/global.css

@@ -5,7 +5,7 @@
     --muted-color: #6b7280;
     --surface: #ffffff;
     --background: rgba(246, 249, 255, 0.5);
-    --background-opaque: rgba(0, 0, 0, 0.12);
+    --background-opaque: rgba(0, 0, 0, 0.2);
 }
 
 /* Dark theme overrides (toggle by setting attribute on <html>) */
@@ -15,7 +15,7 @@
     --muted-color: #9ca3af;
     --surface: #000;
     --background: rgba(0, 0, 0, 0.8);
-    --background-opaque: rgba(255, 255, 255, 0.12);
+    --background-opaque: rgba(255, 255, 255, 0.2);
 }
 
 * {

vite.config.js

@@ -1,9 +1,18 @@
 import { defineConfig } from 'vite'
 import { svelte } from '@sveltejs/vite-plugin-svelte'
 
-export default defineConfig({
+export default defineConfig(() => ({
     plugins: [svelte()],
     server: {
         port: 5173,
+        middlewares: [
+            (req, res, next) => {
+                if (req.url === '/' || req.url.match(/\.\w+$/) || req.url.includes('/public/')) {
+                    return next()
+                }
+                req.url = '/'
+                next()
+            }
+        ]
     }
-})
+}))