From c1e1741b71ed03cf800cd2dad6a235696452559b Mon Sep 17 00:00:00 2001
From: sethburkart123 <seth.burkart@hills.adventist.edu.au>
Date: Thu, 31 Oct 2024 16:54:02 +1100
Subject: [PATCH] feat: add fuse.js to store search

---
 package.json                                  |  1 +
 .../components/store/Backgrounds.svelte       | 33 +++++++++++------
 .../themes/BackgroundSelector.svelte          | 35 +++++++++++++------
 .../hooks/BackgroundUpdates.ts                | 29 +++++++++++++++
 4 files changed, 77 insertions(+), 21 deletions(-)
 create mode 100644 src/svelte-interface/hooks/BackgroundUpdates.ts

diff --git a/package.json b/package.json
index 71e06735..e6b45d1d 100644
--- a/package.json
+++ b/package.json
@@ -72,6 +72,7 @@
     "codemirror": "^6.0.1",
     "color": "^4.2.3",
     "dompurify": "^3.1.6",
+    "fuse.js": "^7.0.0",
     "idb": "^8.0.0",
     "kolorist": "^1.8.0",
     "localforage": "^1.10.0",
diff --git a/src/svelte-interface/components/store/Backgrounds.svelte b/src/svelte-interface/components/store/Backgrounds.svelte
index dffcfba6..6ffabd2f 100644
--- a/src/svelte-interface/components/store/Backgrounds.svelte
+++ b/src/svelte-interface/components/store/Backgrounds.svelte
@@ -3,6 +3,8 @@
   import { setTheme } from '@/seqta/ui/themes/setTheme';
   import Spinner from '../Spinner.svelte';
   import { settingsState } from '@/seqta/utils/listeners/SettingsState'
+  import Fuse from 'fuse.js';
+  import { backgroundUpdates } from '@/svelte-interface/hooks/BackgroundUpdates'
 
   type Background = { id: string; category: string; type: string; lowResUrl: string; highResUrl: string; name: string; description: string; featured?: boolean };
   let { searchTerm } = $props<{ searchTerm: string }>();
@@ -21,6 +23,14 @@
   let activeTab = $state<'all' | 'installed' | 'photos' | 'videos'>('all');
   let sortBy = $state<'newest' | 'popular' | 'name'>('newest');
 
+  // Add Fuse.js options
+  const fuseOptions = {
+    keys: ['name', 'description'],
+    threshold: 0.4,
+    ignoreLocation: true
+  };
+  let fuse: Fuse<Background>;
+
   // Existing functions
   const loadStore = async () => {
     try {
@@ -31,7 +41,7 @@
       }
       const data = await response.json();
       backgrounds = data.backgrounds;
-      console.log(data.backgrounds);
+      fuse = new Fuse(backgrounds, fuseOptions);
       debugInfo = `Loaded ${backgrounds.length} backgrounds`;
       await loadSavedBackgrounds();
     } catch (e) {
@@ -60,15 +70,20 @@
 
   // Derived states
   let filteredBackgrounds = $derived((() => {
-    let filtered = backgrounds.filter((bg: Background) => {
-      const matchesCategory = selectedCategory === 'All' 
+    let filtered = backgrounds;
+    
+    // Use Fuse.js search if there's a search term
+    if (searchTerm.trim()) {
+      filtered = fuse?.search(searchTerm).map((result: any) => result.item) ?? [];
+    }
+
+    // Apply category filtering
+    filtered = filtered.filter((bg: Background) => {
+      return selectedCategory === 'All' 
         ? true 
         : selectedCategory === 'Featured' 
           ? bg.featured 
           : bg.category === selectedCategory;
-      const matchesSearch = bg.name.toLowerCase().includes(searchTerm.toLowerCase()) || 
-                           bg.description.toLowerCase().includes(searchTerm.toLowerCase());
-      return matchesCategory && matchesSearch;
     });
 
     // Apply sorting
@@ -133,6 +148,7 @@
     installingBackgrounds = new Set(installingBackgrounds).add(background.id);
     try {
       await saveBackgroundFromUrl(background.highResUrl, background.id, background.type);
+      backgroundUpdates.triggerUpdate();
     } finally {
       installingBackgrounds = new Set(installingBackgrounds);
       installingBackgrounds.delete(background.id);
@@ -191,7 +207,7 @@
     <!-- Header -->
     <div class="sticky top-0 z-10 p-4 bg-white border-b dark:bg-zinc-900 dark:border-zinc-700">
       <div class="flex items-center justify-between mb-4">
-        <h1 class="text-2xl font-bold">Explore Backgrounds</h1>
+        <h1 class="text-2xl font-bold">Explore Backgrounds {searchTerm ? `- "${searchTerm}"` : ''}</h1>
         <div class="flex items-center gap-4">
           <select 
             bind:value={sortBy} 
@@ -281,9 +297,6 @@
                   </span>
                 {/if}
               </div>
-              <div class="absolute bottom-0 left-0 right-0 p-2 bg-gradient-to-t from-black to-transparent">
-                <h3 class="text-sm font-semibold text-white">{background.name}</h3>
-              </div>
             </div>
           {/each}
         </div>
diff --git a/src/svelte-interface/components/themes/BackgroundSelector.svelte b/src/svelte-interface/components/themes/BackgroundSelector.svelte
index 978e70e2..695e865d 100644
--- a/src/svelte-interface/components/themes/BackgroundSelector.svelte
+++ b/src/svelte-interface/components/themes/BackgroundSelector.svelte
@@ -5,6 +5,7 @@
   import { onMount, onDestroy } from 'svelte'
   import { loadBackground } from '@/seqta/ui/ImageBackgrounds'
   import { delay } from 'lodash'
+  import { backgroundUpdates } from '@/svelte-interface/hooks/BackgroundUpdates'
 
   let { isEditMode, selectNoBackground = $bindable(), selectedBackground = $bindable() } = $props<{ isEditMode: boolean, selectNoBackground: () => void, selectedBackground: string | null }>();
   let backgrounds = $state<{ id: string; type: string; blob: Blob | null; url?: string }[]>([]);
@@ -77,7 +78,7 @@
     }
   }
 
-  async function loadFullBackgrounds(): Promise<void> {
+  async function syncBackgrounds(): Promise<void> {
     try {
       error = null;
 
@@ -85,8 +86,25 @@
         throw new Error("Your browser doesn't support IndexedDB. Unable to load backgrounds.");
       }
 
-      const data = await readAllData();
-      backgrounds = await preloadBackgrounds(data);
+      const dbData = await readAllData();
+      
+      // Release existing object URLs to prevent memory leaks
+      backgrounds.forEach(bg => {
+        if (bg.url) URL.revokeObjectURL(bg.url);
+      });
+
+      // Create fresh background objects with new object URLs
+      backgrounds = dbData.map(bg => ({
+        id: bg.id,
+        type: bg.type,
+        blob: bg.blob,
+        url: URL.createObjectURL(bg.blob)
+      }));
+
+      // Check if selected background still exists
+      if (selectedBackground && !backgrounds.some(bg => bg.id === selectedBackground)) {
+        selectNoBackground();
+      }
     } catch (e) {
       if (e instanceof Error) {
         error = e.message;
@@ -96,13 +114,6 @@
     }
   }
 
-  async function preloadBackgrounds(data: { id: string; type: string; blob: Blob }[]): Promise<{ id: string; type: string; blob: Blob; url: string }[]> {
-    return data.map(bg => ({
-      ...bg,
-      url: URL.createObjectURL(bg.blob)
-    }));
-  }
-
   function selectBackground(fileId: string): void {
     if (selectedBackground === fileId) {
       selectNoBackground();
@@ -150,13 +161,14 @@
     if (parentElement?.classList.contains('active')) {
       delay(() => {
         isVisible = true;
-        loadFullBackgrounds();
+        syncBackgrounds();
       }, 600);
     }
   }
 
   onMount(() => {
     loadBackgroundMetadata();
+    backgroundUpdates.addListener(syncBackgrounds);
     
     parentElement = element.closest('.tab');
     if (parentElement) {
@@ -165,6 +177,7 @@
 
       return () => {
         observer.disconnect();
+        backgroundUpdates.removeListener(syncBackgrounds);
       };
     }
   });
diff --git a/src/svelte-interface/hooks/BackgroundUpdates.ts b/src/svelte-interface/hooks/BackgroundUpdates.ts
new file mode 100644
index 00000000..5f853f65
--- /dev/null
+++ b/src/svelte-interface/hooks/BackgroundUpdates.ts
@@ -0,0 +1,29 @@
+type BackgroundUpdateCallback = () => void;
+
+class BackgroundUpdates {
+  private static instance: BackgroundUpdates;
+  private listeners: Set<BackgroundUpdateCallback> = new Set();
+
+  private constructor() {}
+
+  public static getInstance(): BackgroundUpdates {
+    if (!BackgroundUpdates.instance) {
+      BackgroundUpdates.instance = new BackgroundUpdates();
+    }
+    return BackgroundUpdates.instance;
+  }
+
+  public addListener(callback: BackgroundUpdateCallback): void {
+    this.listeners.add(callback);
+  }
+
+  public removeListener(callback: BackgroundUpdateCallback): void {
+    this.listeners.delete(callback);
+  }
+
+  public triggerUpdate(): void {
+    this.listeners.forEach(callback => callback());
+  }
+}
+
+export const backgroundUpdates = BackgroundUpdates.getInstance();