✨ feat: add Svelte actions and global stores for enhanced functionality

frontend/src/lib/actions/clickOutside.ts

@@ -0,0 +1,26 @@
+/**
+ * Svelte action: click outside detection
+ * Usage: <div use:clickOutside={onClickOutside}>
+ * Calls the callback when a click occurs outside the element.
+ */
+export function clickOutside(node: HTMLElement, callback: () => void) {
+    function handleClick(event: MouseEvent) {
+        if (!node.contains(event.target as Node)) {
+            callback()
+        }
+    }
+
+    // Delay adding the listener to avoid catching the triggering click
+    setTimeout(() => {
+        document.addEventListener("click", handleClick, true)
+    }, 0)
+
+    return {
+        update(newCallback: () => void) {
+            callback = newCallback
+        },
+        destroy() {
+            document.removeEventListener("click", handleClick, true)
+        },
+    }
+}

frontend/src/lib/formContext.ts

@@ -0,0 +1,12 @@
+export const FORM_CONTEXT = Symbol("FORM_CONTEXT")
+
+export interface ValidatableField {
+    validate: () => Promise<boolean> | boolean
+    reset: () => void
+    focus?: () => void
+}
+
+export interface FormContext {
+    register: (field: ValidatableField) => void
+    unregister: (field: ValidatableField) => void
+}

frontend/src/lib/requestsStore.ts

@@ -0,0 +1,21 @@
+import { writable } from "svelte/store"
+
+/**
+ * Global store to track active API requests
+ * Used to display global loading indicator
+ */
+export const activeRequests = writable<number>(0)
+
+/**
+ * Increment active requests counter
+ */
+export function incrementRequests() {
+    activeRequests.update((count) => count + 1)
+}
+
+/**
+ * Decrement active requests counter
+ */
+export function decrementRequests() {
+    activeRequests.update((count) => Math.max(0, count - 1))
+}

frontend/src/lib/serverBuildInfo.ts

@@ -0,0 +1,10 @@
+import { writable } from "svelte/store"
+
+const serverBuildTime = writable<string | null>(null)
+
+const setServerBuildTime = (value: string | null | undefined): void => {
+    if (!value) return
+    serverBuildTime.set(value)
+}
+
+export { serverBuildTime, setServerBuildTime }

frontend/src/lib/store.ts

@@ -2,8 +2,19 @@ import { get, writable } from "svelte/store"
 
 /*********** location **************************/
 
+/**
+ * Strip trailing slash from a path, preserving root "/".
+ * E.g. "/about/" → "/about"
+ */
+const stripTrailingSlash = (path: string): string => {
+    if (path && path.length > 1 && path.endsWith("/")) {
+        return path.replace(/\/+$/, "")
+    }
+    return path
+}
+
 const initLoc = {
-    path: (typeof window !== "undefined" && window.location?.pathname) || "/",
+    path: stripTrailingSlash((typeof window !== "undefined" && window.location?.pathname) || "/"),
     search: (typeof window !== "undefined" && window.location?.search) || "",
     hash: (typeof window !== "undefined" && window.location?.hash) || "",
     push: false,
@@ -26,8 +37,9 @@ const publishLocation = (_p?: string) => {
         if (_s) _s = "?" + _s
     }
 
+    const rawPath = _p || (typeof window !== "undefined" && window.location?.pathname)
     const newLocation: LocationStore = {
-        path: _p || (typeof window !== "undefined" && window.location?.pathname),
+        path: stripTrailingSlash(rawPath),
         search: _p ? _s : typeof window !== "undefined" && window.location?.search,
         hash: _p ? _h : typeof window !== "undefined" && window.location?.hash,
         push: !!_p,
@@ -79,6 +91,26 @@ typeof window !== "undefined" &&
         publishLocation()
     })
 
+/********************** UI State Stores *****************/
+
+// Store for mobile menu open state (shared between Header and navigation components)
+export const mobileMenuOpen = writable<boolean>(false)
+
+/********************** Current Content Page *****************/
+
+// Store for tracking the currently displayed content page (used for cross-language linking etc.)
+export const currentContentEntry = writable<{ translationKey?: string; lang?: string; path?: string } | null>(null)
+
 /********************** override for admin ui *****************/
 
 export const apiBaseOverride = writable<string | null>(null)
+
+/********************** Navigation History *****************/
+
+// Store for tracking previous path (used for conditional back button)
+export const previousPath = writable<string | null>(null)
+
+/********************** Cookie Consent *****************/
+
+// Whether the cookie consent banner is currently visible
+export const cookieConsentVisible = writable(false)

frontend/src/lib/utils.ts

@@ -0,0 +1,59 @@
+export function debounce<T extends (...args: any[]) => void>(func: T, wait: number): (...args: Parameters<T>) => void {
+    let timeout: NodeJS.Timeout | null = null
+
+    return (...args: Parameters<T>) => {
+        if (timeout) {
+            clearTimeout(timeout)
+        }
+        timeout = setTimeout(() => func(...args), wait)
+    }
+}
+
+export function formatNumber(number: number, decimals = 2): string {
+    return number.toFixed(decimals)
+}
+
+export function formatCurrency(amount: number, currency = "EUR", locale = "de-DE"): string {
+    // goja (tibi-server SSR runtime) does not provide Intl
+    if (typeof Intl === "undefined") {
+        const fixed = amount.toFixed(2).replace(".", ",")
+        return `${fixed}\u00A0${currency === "EUR" ? "€" : currency}`
+    }
+    return new Intl.NumberFormat(locale, {
+        style: "currency",
+        currency: currency,
+    }).format(amount)
+}
+
+export function generateMockImage(seed: string): string {
+    // Generate a consistent color based on the seed
+    const colors = [
+        "bg-red-200",
+        "bg-blue-200",
+        "bg-green-200",
+        "bg-yellow-200",
+        "bg-purple-200",
+        "bg-pink-200",
+        "bg-indigo-200",
+        "bg-teal-200",
+    ]
+
+    const colorIndex = seed.split("").reduce((acc, char) => acc + char.charCodeAt(0), 0) % colors.length
+    return colors[colorIndex]
+}
+
+export function highlightSearchTerm(text: string, searchTerm: string): string {
+    if (!searchTerm.trim()) return text
+
+    const regex = new RegExp(`(${searchTerm})`, "gi")
+    return text.replace(regex, '<mark class="bg-yellow-200">$1</mark>')
+}
+
+export function slugify(value: string): string {
+    return value
+        .normalize("NFD")
+        .replace(/[\u0300-\u036f]/g, "")
+        .toLowerCase()
+        .replace(/[^a-z0-9]+/g, "-")
+        .replace(/(^-|-$)/g, "")
+}

types/global.d.ts

@@ -19,6 +19,7 @@ interface ApiOptions {
     params?: {
         [key: string]: string
     }
+    signal?: AbortSignal
 }
 
 interface LocationStore {
@@ -33,6 +34,8 @@ interface LocationStore {
 interface ApiResult<T> {
     data: T
     count: number
+    /** Build timestamp from server (X-Build-Time header), only present on client requests */
+    buildTime?: string | null
 }
 
 interface FileField {
@@ -43,13 +46,106 @@ interface FileField {
 }
 
 interface MedialibEntry {
-    id: string
-    // ...
+    id?: string
+    file?: {
+        src?: string
+        type?: string
+    }
+    alt?: string
+    [key: string]: unknown
 }
 
+/** Pagebuilder: Content Block Entry */
+interface ContentBlockEntry {
+    hide?: boolean
+    headline?: string
+    headlineH1?: boolean
+    subline?: string
+    tagline?: string
+    anchorId?: string
+    containerWidth?: "" | "wide" | "full"
+    background?: {
+        color?: string
+        image?: string
+    }
+    padding?: {
+        top?: string
+        bottom?: string
+    }
+    type?: string
+    callToAction?: {
+        buttonText?: string
+        buttonLink?: string
+        buttonTarget?: string
+    }
+    heroImage?: {
+        image?: string
+    }
+    // richtext fields
+    text?: string
+    imagePosition?: "none" | "left" | "right"
+    imageRounded?: string
+    image?: string
+    // accordion fields
+    accordionItems?: {
+        question?: string
+        answer?: string
+        open?: boolean
+    }[]
+    // imageGallery fields
+    imageGallery?: {
+        images?: {
+            image?: string
+            caption?: string
+            showCaption?: boolean
+        }[]
+    }
+    // richtext caption fields
+    showImageCaption?: boolean
+    imageCaption?: string
+}
+
+/** Content Entry from the CMS */
 interface ContentEntry {
-    id: string
-    // ...
+    id?: string
+    _id?: string
+    active?: boolean
+    publication?: {
+        from?: string | Date
+        to?: string | Date
+    }
+    type?: string
+    lang?: string
+    translationKey?: string
+    name?: string
+    path?: string
+    alternativePaths?: { path?: string }[]
+    thumbnail?: string
+    teaserText?: string
+    blocks?: ContentBlockEntry[]
+    meta?: {
+        title?: string
+        description?: string
+        keywords?: string
+    }
+}
+
+/** Navigation element */
+interface NavigationElement {
+    name: string
+    external?: boolean
+    page?: string
+    hash?: string
+    externalUrl?: string
+}
+
+/** Navigation entry from the CMS */
+interface NavigationEntry {
+    id?: string
+    _id?: string
+    language?: string
+    type?: "header" | "footer"
+    elements?: NavigationElement[]
 }
 
 interface ProductEntry {