Update app.py

app.py

@@ -19,46 +19,45 @@ def main():
 
         # Header
         st.markdown("<h1 style='text-align: center; color: #4285F4;'>Multilingual Translator</h1>", unsafe_allow_html=True)
+        st.markdown("<p style='text-align: center; color: #666;'>Translate text like Google Translate</p>", unsafe_allow_html=True)
 
         # Language and Input/Output Layout
         col1, col2 = st.columns(2)
         with col1:
-            detected_options = lang_detect.detect_language(st.session_state.get("input_text", "")) if st.session_state.get("input_text", "").strip() and len(st.session_state.get("input_text", "").strip()) >= 10 else [("Hindi", 1.0, "हिन्दी")]
-            source_lang = detected_options[0][0] if detected_options else "Hindi"
-            source_lang_code = next((k for k, v in LANGUAGES.items() if v[1] == source_lang), "hi")
-            st.selectbox("Source", options=[LANGUAGES[source_lang_code][0]] + [v[0] for v in LANGUAGES.values()], index=0, key="source_lang")
-            input_type = st.radio("Input", ["Text", "File"], horizontal=True, key="input_type", label_visibility="hidden")
+            detected_options = lang_detect.detect_language(st.session_state.get("input_text", "")) if st.session_state.get("input_text", "").strip() else [("Auto-detect", 1.0, "Auto-detect")]
+            source_lang = detected_options[0][0] if detected_options[0][0] != "Auto-detect" else "Auto-detect"
+            source_lang_code = next((k for k, v in LANGUAGES.items() if v[0] == source_lang), "hi") if source_lang != "Auto-detect" else "auto"
+            source_options = ["Auto-detect"] + [v[0] for v in LANGUAGES.values()]
+            st.selectbox("Source", options=source_options, index=0 if source_lang == "Auto-detect" else source_options.index(source_lang), key="source_lang")
+            input_type = st.radio("", ["Text", "File"], horizontal=True, label_visibility="hidden")
             if input_type == "Text":
-                input_text = st.text_area("Input", height=200, key="input_text", on_change=trigger_translation, args=(translation, lang_detect, audio_processor,), label_visibility="hidden")
+                st.text_area("", height=200, key="input_text", on_change=trigger_translation, args=(translation, lang_detect, audio_processor,), label_visibility="hidden")
             else:
-                input_text = st.file_uploader("Input", type=["txt", "docx", "pdf"], key="file_input", on_change=trigger_translation, args=(translation, lang_detect, audio_processor,), label_visibility="hidden")
-                if input_text:
-                    st.session_state.input_text = input_text.read().decode("utf-8").strip()
+                uploaded_file = st.file_uploader("", type=["txt", "docx", "pdf"], key="file_input", on_change=trigger_translation, args=(translation, lang_detect, audio_processor,), label_visibility="hidden")
+                if uploaded_file:
+                    st.session_state.input_text = uploaded_file.read().decode("utf-8").strip()
             st.button("Translate", key="translate_btn", on_click=trigger_translation, args=(translation, lang_detect, audio_processor,))
         with col2:
             st.selectbox("Target", options=[v[0] for v in LANGUAGES.values()], index=list(LANGUAGES.values()).index(LANGUAGES["en"]), key="target_lang")
             if "translated_text" in st.session_state:
-                st.text_area("Output", value=st.session_state.translated_text, height=200, key="output_text", disabled=True, label_visibility="hidden")
-            if st.button("🔊", key="audio_btn", on_click=play_audio, args=(audio_processor,), help="Play audio"):
-                pass  # Handled by play_audio
+                st.text_area("", value=st.session_state.translated_text, height=200, key="output_text", disabled=True, label_visibility="hidden")
+                st.button("🔊", key="audio_btn", on_click=play_audio, args=(audio_processor,), help="Play audio", use_container_width=False)
 
     except Exception as e:
         st.error(f"App error: {e}")
         st.stop()
 
 def trigger_translation(translation, lang_detect, audio_processor):
-    text = st.session_state.input_text.strip()
+    text = st.session_state.get("input_text", "").strip()
     if text:
-        source_lang = next((k for k, v in LANGUAGES.items() if v[0] == st.session_state.source_lang), "hi")
+        source_lang = st.session_state.source_lang
         target_lang = next((k for k, v in LANGUAGES.items() if v[0] == st.session_state.target_lang), "en")
-        if source_lang != "en" and target_lang != "en":
-            temp = translation.translate(text, source_lang, "en")
-            if temp and len(temp.split()) >= 2:
-                st.session_state.translated_text = translation.translate(temp, "en", target_lang)
-            else:
-                st.session_state.translated_text = text
+        if source_lang == "Auto-detect":
+            detected_options = lang_detect.detect_language(text)
+            source_lang_code = next((k for k, v in LANGUAGES.items() if v[1] == detected_options[0][0]), "hi")
         else:
-            st.session_state.translated_text = translation.translate(text, source_lang, target_lang) or text
+            source_lang_code = next((k for k, v in LANGUAGES.items() if v[0] == source_lang), "hi")
+        st.session_state.translated_text = translation.translate(text, source_lang_code, target_lang) or text
 
 def play_audio(audio_processor):
     if "translated_text" in st.session_state and st.session_state.translated_text:
@@ -66,10 +65,6 @@ def play_audio(audio_processor):
         audio = audio_processor.text_to_speech(st.session_state.translated_text, target_lang)
         if audio and audio.getbuffer().nbytes > 0:
             st.audio(audio, format="audio/mp3")
-        else:
-            audio_fallback = audio_processor.text_to_speech(st.session_state.translated_text, "en")
-            if audio_fallback and audio_fallback.getbuffer().nbytes > 0:
-                st.audio(audio_fallback, format="audio/mp3")
 
 if __name__ == "__main__":
     main()