new hashtag filter option

src-tauri/src/home.rs

@@ -11,9 +11,9 @@ pub struct LocalPost {
 }
 
 #[tauri::command]
-pub async fn fetch_nostr_posts() -> Result<Vec<LocalPost>, String> {
+pub async fn fetch_nostr_posts(hashtags: Vec<String>) -> Result<Vec<LocalPost>, String> {
+    println!("Fetching Nostr posts for hashtags: {:?}", hashtags);
     // 1. Temporären Einweg-Schlüssel generieren
-    // Das erzeugt ein Schlüsselpaar im RAM, das nach dem Funktionsaufruf verschwindet.
     let random_keys = Keys::generate();
     let temp_nsec = random_keys
         .secret_key()
@@ -34,8 +34,14 @@ pub async fn fetch_nostr_posts() -> Result<Vec<LocalPost>, String> {
     .await
     .map_err(|e| e.to_string())?;
 
-    // 4. Posts von der Library holen
-    let raw_posts = easy.get_random_posts().await.map_err(|e| e.to_string())?;
+    // 4. Posts von der Library holen - Entweder per Hashtag oder Random
+    let raw_posts = if hashtags.is_empty() {
+        easy.get_random_posts().await.map_err(|e| e.to_string())?
+    } else {
+        easy.get_posts_by_hashtags(hashtags)
+            .await
+            .map_err(|e| e.to_string())?
+    };
 
     // 5. Mappen: Library-Typ -> Unser serialisierbarer Typ
     let mapped_posts = raw_posts

src/pages/home.rs

@@ -7,8 +7,8 @@ use yew::prelude::*;
 // Tauri 'invoke' Funktion deklarieren
 #[wasm_bindgen]
 extern "C" {
-    #[wasm_bindgen(js_namespace = ["window", "__TAURI__", "core"])]
-    async fn invoke(cmd: &str, args: JsValue) -> JsValue;
+    #[wasm_bindgen(js_namespace = ["window", "__TAURI__", "core"], catch)]
+    async fn invoke(cmd: &str, args: JsValue) -> Result<JsValue, JsValue>;
 }
 
 // Wir definieren Post lokal, damit Yew weiß, wie die JSON-Daten vom Backend aussehen
@@ -24,13 +24,17 @@ pub struct Post {
 pub fn home() -> Html {
     let posts = use_state(|| None::<Vec<Post>>);
     let error = use_state(|| false);
+    let hashtag_input = use_state(|| String::new());
+    let active_tags = use_state(Vec::<String>::new);
 
     let load_posts = {
         let posts = posts.clone();
         let error = error.clone();
+        let active_tags = active_tags.clone();
         Callback::from(move |_e: MouseEvent| {
             let posts = posts.clone();
             let error = error.clone();
+            let tags = (*active_tags).clone();
 
             // UI zurücksetzen & Scrollen
             posts.set(None);
@@ -43,14 +47,25 @@ pub fn home() -> Html {
             }
 
             spawn_local(async move {
-                // Daten vom Rust-Backend anfordern
-                let res = invoke("fetch_nostr_posts", JsValue::NULL).await;
+                #[derive(Serialize)]
+                struct HashtagArgs {
+                    hashtags: Vec<String>,
+                }
+                let args = serde_wasm_bindgen::to_value(&HashtagArgs { hashtags: tags }).unwrap();
 
-                // JSON-Resultat in Vec<Post> umwandeln
-                if let Ok(new_posts) = serde_wasm_bindgen::from_value::<Vec<Post>>(res) {
-                    posts.set(Some(new_posts));
-                } else {
-                    error.set(true);
+                // Daten vom Rust-Backend anfordern
+                match invoke("fetch_nostr_posts", args).await {
+                    Ok(res) => {
+                        // JSON-Resultat in Vec<Post> umwandeln
+                        if let Ok(new_posts) = serde_wasm_bindgen::from_value::<Vec<Post>>(res) {
+                            posts.set(Some(new_posts));
+                        } else {
+                            error.set(true);
+                        }
+                    }
+                    Err(_) => {
+                        error.set(true);
+                    }
                 }
             });
         })
@@ -68,10 +83,73 @@ pub fn home() -> Html {
     html! {
         <div class="feed-container">
             <div class="feed-header">
-                <h1 class="feed-title">{"✨ Entdecken"}</h1>
-                <button class="reload-btn" onclick={load_posts.clone()}>
-                    {"🔄"}
-                </button>
+                <div class="header-main">
+                    <h1 class="feed-title">{"✨ Entdecken"}</h1>
+                    <button class="reload-btn" onclick={load_posts.clone()}>
+                        {"🔄"}
+                    </button>
+                </div>
+            </div>
+
+            <div class="hashtag-section">
+                <div class="hashtag-input-row">
+                    <input
+                        type="text"
+                        class="hashtag-input"
+                        placeholder="Tags hinzufügen (z.B. bitcoin, rust)..."
+                        value={(*hashtag_input).clone()}
+                        oninput={
+                            let hashtag_input = hashtag_input.clone();
+                            move |e: InputEvent| {
+                                let target: web_sys::HtmlInputElement = e.target_unchecked_into();
+                                hashtag_input.set(target.value());
+                            }
+                        }
+                        onkeydown={
+                            let hashtag_input = hashtag_input.clone();
+                            let active_tags = active_tags.clone();
+                            let load_posts = load_posts.clone();
+                            move |e: KeyboardEvent| {
+                                if e.key() == "Enter" {
+                                    let val = (*hashtag_input).trim().to_string();
+                                    if !val.is_empty() {
+                                        let mut tags = (*active_tags).clone();
+                                        // Mehrere Tags per Komma trennen
+                                        for t in val.split(',').map(|s| s.trim()).filter(|s| !s.is_empty()) {
+                                            if !tags.contains(&t.to_string()) {
+                                                tags.push(t.to_string());
+                                            }
+                                        }
+                                        active_tags.set(tags);
+                                        hashtag_input.set(String::new());
+                                        load_posts.emit(MouseEvent::new("click").unwrap());
+                                    }
+                                }
+                            }
+                        }
+                    />
+                </div>
+                if !active_tags.is_empty() {
+                    <div class="tag-chips">
+                        { for active_tags.iter().map(|t| {
+                            let t_clone = t.clone();
+                            let active_tags = active_tags.clone();
+                            let load_posts = load_posts.clone();
+                            let remove = move |_| {
+                                let mut tags = (*active_tags).clone();
+                                tags.retain(|x| x != &t_clone);
+                                active_tags.set(tags);
+                                load_posts.emit(MouseEvent::new("click").unwrap());
+                            };
+                            html! {
+                                <span class="tag-chip" onclick={remove}>
+                                    { format!("#{}", t) }
+                                    <span class="tag-remove">{"×"}</span>
+                                </span>
+                            }
+                        }) }
+                    </div>
+                }
             </div>
 
             {

styles.css

@@ -10,13 +10,15 @@
     --text-primary: #e2e2e7;
     --text-secondary: #a0a0b0;
     --accent-color: #4a90e2;
-    --nav-bg: rgba(30, 30, 46, 0.95); /* Fallback for blur */
+    --nav-bg: rgba(30, 30, 46, 0.95);
+    /* Fallback for blur */
     --danger: #ef4444;
 }
 
 * {
     box-sizing: border-box;
-    -webkit-tap-highlight-color: transparent; /* UX-Finishing: No blue flash */
+    -webkit-tap-highlight-color: transparent;
+    /* UX-Finishing: No blue flash */
 }
 
 /* --- Global & Layout --- */
@@ -35,7 +37,8 @@ body {
     display: flex;
     justify-content: center;
     min-height: 100vh;
-    overflow-x: hidden; /* Performance: Prevent horizontal scroll */
+    overflow-x: hidden;
+    /* Performance: Prevent horizontal scroll */
     -webkit-tap-highlight-color: transparent;
 }
 
@@ -48,8 +51,7 @@ html {
     width: 100%;
     max-width: 600px;
     /* Safe Areas: Top inset and mobile-friendly padding */
-    padding: calc(20px + env(safe-area-inset-top)) 16px
-        calc(120px + env(safe-area-inset-bottom)) 16px;
+    padding: calc(20px + env(safe-area-inset-top)) 16px calc(120px + env(safe-area-inset-bottom)) 16px;
 }
 
 @media (min-width: 768px) {
@@ -93,7 +95,8 @@ html {
     transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
     /* Touch-Ergonomie: Min 44px effective height */
     padding: 10px 12px;
-    user-select: none; /* UX-Finishing */
+    user-select: none;
+    /* UX-Finishing */
     display: flex;
     align-items: center;
     justify-content: center;
@@ -358,10 +361,12 @@ html {
 
 /* --- Animations --- */
 @keyframes float {
+
     0%,
     100% {
         transform: translateY(0px);
     }
+
     50% {
         transform: translateY(-15px);
     }
@@ -372,6 +377,7 @@ html {
         opacity: 0;
         transform: translateY(-10px);
     }
+
     to {
         opacity: 1;
         transform: translateY(0);
@@ -381,11 +387,9 @@ html {
 /* --- Utilities --- */
 .reload-btn-large {
     cursor: pointer;
-    background: linear-gradient(
-        135deg,
-        rgba(74, 144, 226, 0.15),
-        rgba(74, 144, 226, 0.05)
-    );
+    background: linear-gradient(135deg,
+            rgba(74, 144, 226, 0.15),
+            rgba(74, 144, 226, 0.05));
     color: var(--accent-color);
     padding: 16px;
     border-radius: 16px;
@@ -418,9 +422,11 @@ html {
     0% {
         box-shadow: 0 0 0 0 rgba(74, 144, 226, 0.4);
     }
+
     70% {
         box-shadow: 0 0 0 10px rgba(74, 144, 226, 0);
     }
+
     100% {
         box-shadow: 0 0 0 0 rgba(74, 144, 226, 0);
     }
@@ -513,9 +519,74 @@ html {
     opacity: 0.8;
 }
 
+/* --- Hashtag Section --- */
+.hashtag-section {
+    margin-bottom: 24px;
+}
+
+.hashtag-input-row {
+    display: flex;
+    gap: 10px;
+}
+
+.hashtag-input {
+    flex: 1;
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 12px;
+    padding: 12px 16px;
+    color: white;
+    font-size: 0.95rem;
+    outline: none;
+    transition: all 0.2s;
+}
+
+.hashtag-input:focus {
+    border-color: var(--accent-color);
+    background: rgba(255, 255, 255, 0.08);
+}
+
+.tag-chips {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 8px;
+    margin-top: 12px;
+}
+
+.tag-chip {
+    background: rgba(74, 144, 226, 0.15);
+    color: var(--accent-color);
+    border: 1px solid rgba(74, 144, 226, 0.3);
+    padding: 4px 12px;
+    border-radius: 20px;
+    font-size: 0.85rem;
+    font-weight: 600;
+    cursor: pointer;
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    transition: all 0.2s;
+}
+
+.tag-chip:hover {
+    background: rgba(74, 144, 226, 0.25);
+    transform: scale(1.05);
+}
+
+.tag-remove {
+    font-size: 1.1rem;
+    line-height: 1;
+    opacity: 0.6;
+}
+
+.tag-chip:hover .tag-remove {
+    opacity: 1;
+}
+
 /* --- Layout Adjustment für Provider Switch --- */
 .header-main {
     display: flex;
     align-items: center;
-    gap: 12px;
-}
+    justify-content: space-between;
+    width: 100%;
+}