Implement progressive enhancement for universal search with context-aware filtering

Add comprehensive search solution that works across all recipe pages with proper fallbacks. Features include universal API endpoint, context-aware filtering (category/tag/icon/season/favorites), and progressive enhancement with form submission fallback for no-JS users.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/lib/components/IconLayout.svelte

@@ -72,7 +72,7 @@
 {/each}
 </div>
 <section>
-<Search></Search>
+<Search icon={active_icon}></Search>
 </section>
 <section>
 <slot name=recipes></slot>

src/lib/components/Search.svelte

@@ -1,21 +1,90 @@
 <script>
     import {onMount} from "svelte";
+    import { browser } from '$app/environment';
     import "$lib/css/nordtheme.css";
     
+    // Filter props for different contexts
+    export let category = null;
+    export let tag = null;
+    export let icon = null;
+    export let season = null;
+    export let favoritesOnly = false;
+    export let searchResultsUrl = '/rezepte/search';
+    
+    let searchQuery = '';
+    
+    // Build search URL with current filters
+    function buildSearchUrl(query) {
+        if (browser) {
+            const url = new URL(searchResultsUrl, window.location.origin);
+            if (query) url.searchParams.set('q', query);
+            if (category) url.searchParams.set('category', category);
+            if (tag) url.searchParams.set('tag', tag);
+            if (icon) url.searchParams.set('icon', icon);
+            if (season) url.searchParams.set('season', season);
+            if (favoritesOnly) url.searchParams.set('favorites', 'true');
+            return url.toString();
+        } else {
+            // Server-side fallback - return just the base path
+            return searchResultsUrl;
+        }
+    }
+    
+    function handleSubmit(event) {
+        if (browser) {
+            // For JS-enabled browsers, prevent default and navigate programmatically
+            // This allows for future enhancements like instant search
+            const url = buildSearchUrl(searchQuery);
+            window.location.href = url;
+        }
+        // If no JS, form will submit normally
+    }
+    
+    function clearSearch() {
+        searchQuery = '';
+        if (browser) {
+            // Reset any client-side filtering if present
+            const recipes = document.querySelectorAll(".search_me");
+            recipes.forEach(recipe => {
+                recipe.style.display = 'flex';
+                recipe.classList.remove("matched-recipe");
+            });
+            document.querySelectorAll(".media_scroller_wrapper").forEach( scroller => {
+                scroller.style.display= 'block'
+            });
+        }
+    }
+
     onMount(() => {
+        // Swap buttons for JS-enabled experience
+        const submitButton = document.getElementById('submit-search');
+        const clearButton = document.getElementById('clear-search');
+        
+        if (submitButton && clearButton) {
+            submitButton.style.display = 'none';
+            clearButton.style.display = 'flex';
+        }
+        
+        // Get initial search value from URL if present
+        const urlParams = new URLSearchParams(window.location.search);
+        const urlQuery = urlParams.get('q');
+        if (urlQuery) {
+            searchQuery = urlQuery;
+        }
+        
+        // Enhanced client-side filtering (existing functionality)
         const recipes = document.querySelectorAll(".search_me");
         const search = document.getElementById("search");
-  	const clearSearch = document.getElementById("clear-search");
         
+        if (recipes.length > 0 && search) {
             function do_search(click_only_result=false){
-   		// grab search input value
                 const searchText = search.value.toLowerCase().trim().normalize('NFD').replace(/\p{Diacritic}/gu, "");
                 const searchTerms = searchText.split(" ");
                 const hasFilter = searchText.length > 0;
 
                 let scrollers_with_results = [];
                 let scrollers = [];
-    		// for each recipe hide all but matched
+                
                 recipes.forEach(recipe => {
                     const searchString = `${recipe.textContent} ${recipe.dataset.tags}`.toLowerCase().normalize('NFD').replace(/\p{Diacritic}/gu, "").replace(/&shy;|­/g, '');
                     const isMatch = searchTerms.every(term => searchString.includes(term));
@@ -35,43 +104,21 @@ onMount(() => {
                 scrollers.filter(item => !scrollers_with_results.includes(item)).forEach( scroller => {
                     scroller.parentNode.style.display= 'none'
                 })
-		scroll
+                
                 let items = document.querySelectorAll(".matched-recipe");
-		items = [...new Set(items)] // make unique as seasonal mediascroller can lead to duplicates
-		// if only one result and click_only_result is true, click it
+                items = [...new Set(items)]
                 if(click_only_result && scrollers_with_results.length == 1 && items.length == 1){
-			// add '/rezepte' to history to not force-redirect back to recipe if going back
                     items[0].click();
                 }
-		// if scrollers with results are presenet scroll first result into view
-		/*if(scrollers_with_results.length > 0){
-			scrollers_with_results[0].scrollIntoView({behavior: "smooth", block: "end", inline: "nearest"});
-		}*/ // For now disabled because it is annoying on mobile
-
             }
 
             search.addEventListener("input", () => {
+                searchQuery = search.value;
                 do_search();
             })
             
-  	clearSearch.addEventListener("click", () => {
-    		search.value = "";
-    		recipes.forEach(recipe => {
-      			recipe.style.display = 'flex';
-      			recipe.classList.remove("matched-recipe");
-		})
-		document.querySelectorAll(".media_scroller_wrapper").forEach( scroller => {
-			scroller.style.display= 'block'
-		})
-  	})
-
-	let paramString = window.location.href.split('?')[1];
-	let queryString = new URLSearchParams(paramString);
-
-	for (let pair of queryString.entries()) {
-		if(pair[0] == 'q'){
-			const search = document.getElementById("search");
-			search.value=pair[1];
+            // Initial search if URL had query
+            if (urlQuery) {
                 do_search(true);
             }
         }
@@ -110,7 +157,7 @@ input::placeholder{
 	scale: 1.02 1.02;
   	filter: drop-shadow(0.4em  0.5em 1em rgba(0,0,0,0.6))
 }
-button#clear-search {
+.search-button {
   all: unset;
   display: flex;
   justify-content: center;
@@ -123,17 +170,35 @@ button#clear-search {
   cursor: pointer;
   transition: color 180ms ease-in-out;
 }
-button#clear-search:hover {
+.search-button:hover {
   color: white;
   scale: 1.1 1.1;
 }
-button#clear-search:active{
+.search-button:active{
 transition: 50ms;
 scale: 0.8 0.8;
 }
+.search-button svg {
+  width: 100%;
+  height: 100%;
+}
 </style>
-<div class="search js-only">
-  <input type="text" id="search" placeholder="Suche...">
-  <button id="clear-search">
-	  <svg  xmlns="http://www.w3.org/2000/svg" class="ionicon" viewBox="0 0 512 512"><title>Sucheintrag löschen</title><path d="M135.19 390.14a28.79 28.79 0 0021.68 9.86h246.26A29 29 0 00432 371.13V140.87A29 29 0 00403.13 112H156.87a28.84 28.84 0 00-21.67 9.84v0L46.33 256l88.86 134.11z" fill="none" stroke="currentColor" stroke-linejoin="round" stroke-width="32"></path><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="32" d="M336.67 192.33L206.66 322.34M336.67 322.34L206.66 192.33M336.67 192.33L206.66 322.34M336.67 322.34L206.66 192.33"></path></svg></button>
-</div>
+<form class="search" method="get" action={buildSearchUrl('')} on:submit|preventDefault={handleSubmit}>
+  {#if category}<input type="hidden" name="category" value={category} />{/if}
+  {#if tag}<input type="hidden" name="tag" value={tag} />{/if}
+  {#if icon}<input type="hidden" name="icon" value={icon} />{/if}
+  {#if season}<input type="hidden" name="season" value={season} />{/if}
+  {#if favoritesOnly}<input type="hidden" name="favorites" value="true" />{/if}
+  
+  <input type="text" id="search" name="q" placeholder="Suche..." bind:value={searchQuery}>
+  
+  <!-- Submit button (visible by default, hidden when JS loads) -->
+  <button type="submit" id="submit-search" class="search-button" style="display: flex;">
+	  <svg xmlns="http://www.w3.org/2000/svg" class="ionicon" viewBox="0 0 512 512" style="width: 100%; height: 100%;"><title>Suchen</title><path d="M221.09 64a157.09 157.09 0 10157.09 157.09A157.1 157.1 0 00221.09 64z" fill="none" stroke="currentColor" stroke-miterlimit="10" stroke-width="32"></path><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="32" d="m338.29 338.29 105.25 105.25"></path></svg>
+  </button>
+  
+  <!-- Clear button (hidden by default, shown when JS loads) -->
+  <button type="button" id="clear-search" class="search-button js-only" style="display: none;" on:click={clearSearch}>
+	  <svg  xmlns="http://www.w3.org/2000/svg" class="ionicon" viewBox="0 0 512 512"><title>Sucheintrag löschen</title><path d="M135.19 390.14a28.79 28.79 0 0021.68 9.86h246.26A29 29 0 00432 371.13V140.87A29 29 0 00403.13 112H156.87a28.84 28.84 0 00-21.67 9.84v0L46.33 256l88.86 134.11z" fill="none" stroke="currentColor" stroke-linejoin="round" stroke-width="32"></path><path fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="32" d="M336.67 192.33L206.66 322.34M336.67 322.34L206.66 192.33M336.67 192.33L206.66 322.34M336.67 322.34L206.66 192.33"></path></svg>
+  </button>
+</form>

src/lib/components/SeasonLayout.svelte

@@ -41,7 +41,7 @@ a.month:hover,
 {/each}
 </div>
 <section>
-<Search></Search>
+<Search season={active_index + 1}></Search>
 </section>
 <section>
 <slot name=recipes></slot>

src/routes/api/rezepte/search/+server.ts

@@ -0,0 +1,74 @@
+import { json, type RequestHandler } from '@sveltejs/kit';
+import type { BriefRecipeType } from '../../../../types/types';
+import { Recipe } from '../../../../models/Recipe';
+import { dbConnect, dbDisconnect } from '../../../../utils/db';
+
+export const GET: RequestHandler = async ({ url, locals }) => {
+  await dbConnect();
+  
+  const query = url.searchParams.get('q')?.toLowerCase().trim() || '';
+  const category = url.searchParams.get('category');
+  const tag = url.searchParams.get('tag');
+  const icon = url.searchParams.get('icon');
+  const season = url.searchParams.get('season');
+  const favoritesOnly = url.searchParams.get('favorites') === 'true';
+  
+  try {
+    // Build base query
+    let dbQuery: any = {};
+    
+    // Apply filters based on context
+    if (category) {
+      dbQuery.category = category;
+    }
+    
+    if (tag) {
+      dbQuery.tags = { $in: [tag] };
+    }
+    
+    if (icon) {
+      dbQuery.icon = icon;
+    }
+    
+    if (season) {
+      const seasonNum = parseInt(season);
+      if (!isNaN(seasonNum)) {
+        dbQuery.season = { $in: [seasonNum] };
+      }
+    }
+    
+    // Get all recipes matching base filters
+    let recipes = await Recipe.find(dbQuery, 'name short_name tags category icon description season dateModified').lean() as BriefRecipeType[];
+    
+    // Handle favorites filter
+    if (favoritesOnly && locals.session?.user) {
+      const User = (await import('../../../../models/User')).User;
+      const user = await User.findById(locals.session.user.id);
+      if (user && user.favoriteRecipes) {
+        const favoriteShortNames = user.favoriteRecipes;
+        recipes = recipes.filter(recipe => favoriteShortNames.includes(recipe.short_name));
+      } else {
+        recipes = [];
+      }
+    }
+    
+    // Apply text search if query provided
+    if (query) {
+      const searchTerms = query.normalize('NFD').replace(/\p{Diacritic}/gu, "").split(" ");
+      
+      recipes = recipes.filter(recipe => {
+        const searchString = `${recipe.name} ${recipe.description || ''} ${recipe.tags?.join(' ') || ''}`.toLowerCase()
+          .normalize('NFD').replace(/\p{Diacritic}/gu, "").replace(/­|­/g, '');
+        
+        return searchTerms.every(term => searchString.includes(term));
+      });
+    }
+    
+    await dbDisconnect();
+    return json(JSON.parse(JSON.stringify(recipes)));
+    
+  } catch (error) {
+    await dbDisconnect();
+    return json({ error: 'Search failed' }, { status: 500 });
+  }
+};

src/routes/rezepte/category/[category]/+page.svelte

@@ -14,7 +14,7 @@
 	}
 </style>
 <h1>Rezepte in Kategorie <q>{data.category}</q>:</h1>
-<Search></Search>
+<Search category={data.category}></Search>
 <section>
 <Recipes>
 	{#each rand_array(data.recipes) as recipe}

src/routes/rezepte/favorites/+page.svelte

@@ -40,7 +40,7 @@ h1{
     {/if}
 </p>
 
-<Search></Search>
+<Search favoritesOnly={true}></Search>
 
 {#if data.error}
     <p class="empty-state">Fehler beim Laden der Favoriten: {data.error}</p>

src/routes/rezepte/search/+page.server.ts

@@ -0,0 +1,50 @@
+import type { PageServerLoad } from './$types';
+
+export const load: PageServerLoad = async ({ url, fetch }) => {
+    const query = url.searchParams.get('q') || '';
+    const category = url.searchParams.get('category');
+    const tag = url.searchParams.get('tag');
+    const icon = url.searchParams.get('icon');
+    const season = url.searchParams.get('season');
+    const favoritesOnly = url.searchParams.get('favorites') === 'true';
+    
+    // Build API URL with filters
+    const apiUrl = new URL('/api/rezepte/search', url.origin);
+    if (query) apiUrl.searchParams.set('q', query);
+    if (category) apiUrl.searchParams.set('category', category);
+    if (tag) apiUrl.searchParams.set('tag', tag);
+    if (icon) apiUrl.searchParams.set('icon', icon);
+    if (season) apiUrl.searchParams.set('season', season);
+    if (favoritesOnly) apiUrl.searchParams.set('favorites', 'true');
+    
+    try {
+        const response = await fetch(apiUrl.toString());
+        const results = await response.json();
+        
+        return {
+            query,
+            results: response.ok ? results : [],
+            error: response.ok ? null : results.error || 'Search failed',
+            filters: {
+                category,
+                tag,
+                icon,
+                season,
+                favoritesOnly
+            }
+        };
+    } catch (error) {
+        return {
+            query,
+            results: [],
+            error: 'Search failed',
+            filters: {
+                category,
+                tag,
+                icon,
+                season,
+                favoritesOnly
+            }
+        };
+    }
+};

src/routes/rezepte/search/+page.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+    import type { PageData } from './$types';
+    import Recipes from '$lib/components/Recipes.svelte';
+    import Search from '$lib/components/Search.svelte';
+    import Card from '$lib/components/Card.svelte';
+    export let data: PageData;
+    export let current_month = new Date().getMonth() + 1;
+</script>
+
+<style>
+    h1 {
+        text-align: center;
+        font-size: 3em;
+    }
+    .search-info {
+        text-align: center;
+        margin-bottom: 2rem;
+        color: var(--nord3);
+    }
+    .filter-info {
+        text-align: center;
+        margin-bottom: 1rem;
+        font-size: 0.9em;
+        color: var(--nord2);
+    }
+</style>
+
+<svelte:head>
+    <title>Suchergebnisse{data.query ? ` für "${data.query}"` : ''} - Bocken Rezepte</title>
+    <meta name="description" content="Suchergebnisse in den Bockenschen Rezepten." />
+</svelte:head>
+
+<h1>Suchergebnisse</h1>
+
+{#if data.filters.category || data.filters.tag || data.filters.icon || data.filters.season || data.filters.favoritesOnly}
+    <div class="filter-info">
+        Gefiltert nach:
+        {#if data.filters.category}Kategorie "{data.filters.category}"{/if}
+        {#if data.filters.tag}Stichwort "{data.filters.tag}"{/if}
+        {#if data.filters.icon}Icon "{data.filters.icon}"{/if}
+        {#if data.filters.season}Saison "{data.filters.season}"{/if}
+        {#if data.filters.favoritesOnly}Nur Favoriten{/if}
+    </div>
+{/if}
+
+<Search 
+    category={data.filters.category}
+    tag={data.filters.tag}
+    icon={data.filters.icon}
+    season={data.filters.season}
+    favoritesOnly={data.filters.favoritesOnly}
+/>
+
+{#if data.error}
+    <div class="search-info">
+        <p>Fehler bei der Suche: {data.error}</p>
+    </div>
+{:else if data.query}
+    <div class="search-info">
+        <p>{data.results.length} Ergebnisse für "{data.query}"</p>
+    </div>
+{/if}
+
+{#if data.results.length > 0}
+    <Recipes>
+        {#each data.results as recipe}
+            <Card {recipe} {current_month} isFavorite={recipe.isFavorite} showFavoriteIndicator={true}></Card>
+        {/each}
+    </Recipes>
+{:else if data.query && !data.error}
+    <div class="search-info">
+        <p>Keine Rezepte gefunden.</p>
+        <p>Versuche es mit anderen Suchbegriffen.</p>
+    </div>
+{/if}

src/routes/rezepte/tag/[tag]/+page.svelte

@@ -14,7 +14,7 @@
 	}
 </style>
 <h1>Rezepte mit Stichwort <q>{data.tag}</q>:</h1>
-<Search></Search>
+<Search tag={data.tag}></Search>
 <section>
 <Recipes>
 	{#each rand_array(data.recipes) as recipe}