added language es, fr, de, ru on the UI

app.py

@@ -6,8 +6,28 @@ from sentence_transformers import SentenceTransformer
 from deep_translator import GoogleTranslator
 from langdetect import detect, DetectorFactory
 import time
+import yaml 
+
+# --- CARICAMENTO ETICHETTE I18N ---
+def load_labels(filepath="lang.yaml"):
+    """Carica tutte le etichette dal file YAML."""
+    try:
+        with open(filepath, 'r', encoding='utf-8') as f:
+            return yaml.safe_load(f)
+    except FileNotFoundError:
+        print("Errore: Il file 'lang.yaml' non è stato trovato.")
+        return {}
+    except Exception as e:
+        print(f"Errore durante la lettura di 'lang.yaml': {e}")
+        return {}
+
+ALL_LABELS = load_labels()
+DEFAULT_LANG = "it"
+
+def L(key, lang_code=DEFAULT_LANG):
+    """Funzione helper per ottenere una label per la lingua specificata."""
+    return ALL_LABELS.get(lang_code, ALL_LABELS[DEFAULT_LANG]).get(key, f"MISSING_KEY:{key}")
 
-# Evita risultati random nel rilevamento lingua
 DetectorFactory.seed = 0
 
 # --- SETUP DATABASE & AI ---
@@ -76,16 +96,15 @@ details[open] summary::before { content: "✅ "; }
 LOADING_HTML = """
 <div style="display: flex; justify-content: center; align-items: center; height: 100px; width: 100%; flex-direction: column;">
     <div style="border: 4px solid #374151; border-top: 4px solid #3b82f6; border-radius: 50%; width: 30px; height: 30px; animation: spin 1s linear infinite;"></div>
-    <p style="margin-top: 10px; color: #9ca3af; font-size: 0.9em;">Ricerca in corso...</p>
-</div>
+    <p style="margin-top: 10px; color: #9ca3af; font-size: 0.9em;">{}</p> </div>
 <style>@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }</style>
 """
 
 # --- LOGICA ---
 
 def render_results(ids, scores, ui_lang="it"):
-    if not ids: return "Nessun risultato trovato."
-    if not TURSO_URL: return "Errore: Database non configurato."
+    if not ids: return L("error_no_results", ui_lang)
+    if not TURSO_URL: return L("error_db_not_configured", ui_lang)
 
     conn = get_turso_conn()
     placeholders = ", ".join(["?"] * len(ids))
@@ -113,9 +132,9 @@ def render_results(ids, scores, ui_lang="it"):
                 show_btn = True
                 translated_text = translator.translate(summary)
         except:
-            translated_text = "Traduzione non disponibile."
+            L("translation_not_available", ui_lang)
 
-        btn_label = "Traduci in Italiano" if ui_lang == 'it' else "Translate to English"
+        btn_label = L("translation_button_label", ui_lang)
         translate_block = ""
         if show_btn:
             translate_block = f"""<details><summary>{btn_label}</summary><p style="margin-top: 10px; color: #e5e7eb; border-left: 2px solid #fbbf24; padding-left: 10px; font-style: italic;">{translated_text}</p></details>"""
@@ -131,10 +150,40 @@ def render_results(ids, scores, ui_lang="it"):
     html += "</div>"
     return html
 
+# --- FUNZIONE DI AGGIORNAMENTO UI ---
+def update_ui_labels(new_lang):
+    """Aggiorna tutti i componenti Gradio in base alla lingua selezionata."""
+    
+    # Aggiorna il titolo del blocco (gr.Markdown)
+    title_update = gr.Markdown.update(value=f"## {L('app_title', new_lang)}")
+    
+    # Aggiornamenti dei componenti
+    return [
+        title_update,
+        gr.Radio.update(label=L("language_label", new_lang)),
+        gr.Slider.update(label=L("results_label", new_lang)),
+        gr.Tab.update(label=L("plot_search_tab", new_lang)),
+        gr.Textbox.update(placeholder=L("plot_search_placeholder", new_lang)),
+        gr.Button.update(value=L("plot_search_button", new_lang)),
+        gr.Tab.update(label=L("title_search_tab", new_lang)),
+        gr.Textbox.update(placeholder=L("title_search_placeholder", new_lang)),
+        gr.Button.update(value=L("title_search_button", new_lang)),
+        gr.Dataset.update(
+            label=L("dataset_label", new_lang),
+            headers=[
+                L("dataset_header_title", new_lang),
+                L("dataset_header_author", new_lang),
+                L("dataset_header_year", new_lang)
+            ]
+        ),
+        gr.HTML.update(label=L("results_label", new_lang))
+    ]
+
 def search_logic(query, max_res, lang_pref):
+    loading_html_dynamic = LOADING_HTML.format(L("search_loading_message", lang_pref))
     yield gr.update(visible=True), gr.update(visible=False)
     if not query:
-        yield gr.update(visible=False), "Inserisci del testo."
+        yield gr.update(visible=False), L("error_no_query", lang_pref)
         return
     try:
         q_emb = GoogleTranslator(source='auto', target='en').translate(query) if lang_pref == "it" else query
@@ -147,6 +196,7 @@ def search_logic(query, max_res, lang_pref):
         yield gr.update(visible=False), f"Errore: {e}"
 
 def find_logic(title):
+    loading_html_dynamic = LOADING_HTML.format(L("search_loading_message", "en"))
     yield gr.update(visible=True), gr.update(visible=False), [], gr.update(visible=False)
     conn = get_turso_conn()
     rows = conn.execute(f"SELECT id, title, author, year FROM books WHERE title LIKE '%{title}%' LIMIT 10").fetchall()
@@ -174,39 +224,56 @@ def clean_tab2(): return gr.update(value=""), gr.update(visible=False), gr.updat
 
 # --- UI ---
 with gr.Blocks(theme=gr.themes.Ocean(), css=GLOBAL_CSS, js=JS_FORCE_DARK) as demo:
-    gr.Markdown("# 📚 AI Book Finder")
+    app_title_md = gr.Markdown(f"# {L('app_title')}")    
     books_state = gr.State([])
 
     with gr.Row():
-        lang_selector = gr.Radio(choices=["it", "en"], value="it", label="Lingua / Language")
-        num_results = gr.Slider(1, 10, value=5, step=1, label="Risultati", show_reset_button=False)
+        lang_selector = gr.Radio(choices=["it", "en", "es", "fr", "de", "ru"],value=DEFAULT_LANG, label=L("language_label"))
+        num_results = gr.Slider(1, 10, value=5, step=1, label=L("results_label"), show_reset_button=False)
 
     with gr.Tabs() as tabs:
-        with gr.Tab("🔎 Ricerca Trama") as t1:
+        with gr.Tab(L("plot_search_tab")) as t1:
             with gr.Row():
-                txt_in = gr.Textbox(placeholder="Descrivi...", show_label=False, scale=4)
-                btn_search = gr.Button("Cerca", variant="primary", scale=1)
+                txt_in = gr.Textbox(placeholder=L("plot_search_placeholder"), show_label=False, scale=4)
+                btn_search = gr.Button(L("plot_search_button"), variant="primary", scale=1)
         
-        with gr.Tab("📖 Cerca Titolo") as t2:
+        with gr.Tab(L("title_search_tab")) as t2:
             with gr.Row():
-                txt_tit = gr.Textbox(placeholder="Titolo...", show_label=False, scale=4)
-                btn_find = gr.Button("Trova", scale=1)
-            loader_list = gr.HTML(value=LOADING_HTML, visible=False)
+                txt_tit = gr.Textbox(placeholder=L("title_search_placeholder"), show_label=False, scale=4)
+                btn_find = gr.Button(L("title_search_button"), scale=1)
+            loader_list = gr.HTML(value=LOADING_HTML.format(L("search_loading_message")), visible=False)
             
             # --- CORREZIONE TABELLA QUI SOTTO ---
             dataset = gr.Dataset(
                 elem_id="book_cards", 
                 components=[gr.Textbox(visible=False), gr.Textbox(visible=False), gr.Textbox(visible=False)], 
-                headers=["Titolo", "Autore", "Anno"], 
-                label="Risultati:", 
+                headers=[L("dataset_header_title"), L("dataset_header_author"), L("dataset_header_year")],                
+                label=L("dataset_label"), 
                 samples=[],
                 type="index" 
             )
 
-    loader = gr.HTML(value=LOADING_HTML, visible=False)
-    results = gr.HTML(label="Risultati", visible=True)
+    loader = gr.HTML(value=LOADING_HTML.format(L("search_loading_message")), visible=False)
+    results = gr.HTML(label=L("results_label"), visible=True)
 
     # EVENTI
+    # Elenco dei componenti da aggiornare in ordine 
+    components_to_update = [
+        app_title_md,
+        lang_selector, num_results, 
+        t1, txt_in, btn_search, 
+        t2, txt_tit, btn_find, 
+        dataset,
+        results 
+    ]
+
+    # Evento di cambio lingua:
+    lang_selector.change(
+        fn=update_ui_labels,
+        inputs=[lang_selector],
+        outputs=components_to_update
+    )
+
     btn_search.click(search_logic, [txt_in, num_results, lang_selector], [loader, results])
     txt_in.submit(search_logic, [txt_in, num_results, lang_selector], [loader, results])
 

lang.yaml

@@ -0,0 +1,180 @@
+# lang.yaml
+# --- ITALIANO (it) ---
+it:
+  app_title: "📚 AI Book Finder"
+  language_label: "Lingua / Language"
+  results_label: "Risultati"
+  search_loading_message: "Ricerca in corso..."
+  
+  # Ricerca Trama (Tab 1)
+  plot_search_tab: "🔎 Ricerca Trama"
+  plot_search_placeholder: "Descrivi la trama che stai cercando..."
+  plot_search_button: "Cerca"
+  
+  # Cerca Titolo (Tab 2)
+  title_search_tab: "📖 Cerca Titolo"
+  title_search_placeholder: "Titolo..."
+  title_search_button: "Trova"
+  
+  # Dataset/Tabella
+  dataset_label: "Risultati:"
+  dataset_header_title: "Titolo"
+  dataset_header_author: "Autore"
+  dataset_header_year: "Anno"
+
+  # Errori e messaggi di fallback
+  error_no_query: "Inserisci del testo."
+  error_db_not_configured: "Errore: Database non configurato."
+  error_no_results: "Nessun risultato trovato."
+  translation_button_label: "Traduci in Italiano"
+  translation_not_available: "Traduzione non disponibile."
+
+# --- INGLESE (en) ---
+en:
+  app_title: "📚 AI Book Finder"
+  language_label: "Language / Lingua"
+  results_label: "Results"
+  search_loading_message: "Searching..."
+
+  # Plot Search (Tab 1)
+  plot_search_tab: "🔎 Search Plot"
+  plot_search_placeholder: "Describe the plot you are looking for..."
+  plot_search_button: "Search"
+  
+  # Title Search (Tab 2)
+  title_search_tab: "📖 Search Title"
+  title_search_placeholder: "Title..."
+  title_search_button: "Find"
+  
+  # Dataset/Table
+  dataset_label: "Results:"
+  dataset_header_title: "Title"
+  dataset_header_author: "Author"
+  dataset_header_year: "Year"
+
+  # Errors and fallback messages
+  error_no_query: "Please enter some text."
+  error_db_not_configured: "Error: Database not configured."
+  error_no_results: "No results found."
+  translation_button_label: "Translate to English"
+  translation_not_available: "Translation not available."
+
+# --- FRANCESE (fr) ---
+fr:
+  app_title: "📚 AI Book Finder"
+  language_label: "Langue / Language"
+  results_label: "Résultats"
+  search_loading_message: "Recherche en cours..."
+
+  # Plot Search (Tab 1)
+  plot_search_tab: "🔎 Recherche par intrigue"
+  plot_search_placeholder: "Décrivez l'intrigue que vous cherchez..."
+  plot_search_button: "Rechercher"
+  
+  # Title Search (Tab 2)
+  title_search_tab: "📖 Recherche par titre"
+  title_search_placeholder: "Titre..."
+  title_search_button: "Trouver"
+  
+  # Dataset/Table
+  dataset_label: "Résultats :"
+  dataset_header_title: "Titre"
+  dataset_header_author: "Auteur"
+  dataset_header_year: "Année"
+
+  # Errors and fallback messages
+  error_no_query: "Veuillez saisir du texte."
+  error_db_not_configured: "Erreur : Base de données non configurée."
+  error_no_results: "Aucun résultat trouvé."
+  translation_button_label: "Traduire en français"
+  translation_not_available: "Traduction non disponible."
+
+# --- SPAGNOLO (es) ---
+es:
+  app_title: "📚 AI Book Finder"
+  language_label: "Idioma / Language"
+  results_label: "Resultados"
+  search_loading_message: "Buscando..."
+
+  # Plot Search (Tab 1)
+  plot_search_tab: "🔎 Buscar por trama"
+  plot_search_placeholder: "Describe la trama que buscas..."
+  plot_search_button: "Buscar"
+  
+  # Title Search (Tab 2)
+  title_search_tab: "📖 Buscar por título"
+  title_search_placeholder: "Título..."
+  title_search_button: "Encontrar"
+  
+  # Dataset/Table
+  dataset_label: "Resultados:"
+  dataset_header_title: "Título"
+  dataset_header_author: "Autor"
+  dataset_header_year: "Año"
+
+  # Errors and fallback messages
+  error_no_query: "Por favor, introduce texto."
+  error_db_not_configured: "Error: Base de datos no configurada."
+  error_no_results: "No se encontraron resultados."
+  translation_button_label: "Traducir al español"
+  translation_not_available: "Traducción no disponible."
+
+# --- TEDESCO (de) ---
+de:
+  app_title: "📚 AI Book Finder"
+  language_label: "Sprache / Language"
+  results_label: "Ergebnisse"
+  search_loading_message: "Suche läuft..."
+
+  # Plot Search (Tab 1)
+  plot_search_tab: "🔎 Suche nach Handlung"
+  plot_search_placeholder: "Beschreiben Sie die Handlung..."
+  plot_search_button: "Suchen"
+  
+  # Title Search (Tab 2)
+  title_search_tab: "📖 Suche nach Titel"
+  title_search_placeholder: "Titel..."
+  title_search_button: "Finden"
+  
+  # Dataset/Table
+  dataset_label: "Ergebnisse:"
+  dataset_header_title: "Titel"
+  dataset_header_author: "Autor"
+  dataset_header_year: "Jahr"
+
+  # Errors and fallback messages
+  error_no_query: "Bitte geben Sie Text ein."
+  error_db_not_configured: "Fehler: Datenbank nicht konfiguriert."
+  error_no_results: "Keine Ergebnisse gefunden."
+  translation_button_label: "Auf Deutsch übersetzen"
+  translation_not_available: "Übersetzung nicht verfügbar."
+
+# --- RUSSO (ru) ---
+ru:
+  app_title: "📚 AI Book Finder"
+  language_label: "Язык / Language"
+  results_label: "Результаты"
+  search_loading_message: "Поиск..."
+
+  # Plot Search (Tab 1)
+  plot_search_tab: "🔎 Поиск п�� сюжету"
+  plot_search_placeholder: "Опишите сюжет, который вы ищете..."
+  plot_search_button: "Поиск"
+  
+  # Title Search (Tab 2)
+  title_search_tab: "📖 Поиск по названию"
+  title_search_placeholder: "Название..."
+  title_search_button: "Найти"
+  
+  # Dataset/Table
+  dataset_label: "Результаты:"
+  dataset_header_title: "Название"
+  dataset_header_author: "Автор"
+  dataset_header_year: "Год"
+
+  # Errors and fallback messages
+  error_no_query: "Пожалуйста, введите текст."
+  error_db_not_configured: "Ошибка: База данных не настроена."
+  error_no_results: "Результаты не найдены."
+  translation_button_label: "Перевести на русский"
+  translation_not_available: "Перевод недоступен."