Update app.py

app.py

@@ -1,6 +1,8 @@
 import streamlit as st
 import importlib
 from io import BytesIO
+import docx
+from PyPDF2 import PdfReader
 
 st.set_page_config(page_title="Multilingual Translator", page_icon="🌐", layout="centered")
 
@@ -11,6 +13,24 @@ except ImportError as e:
     st.error(f"Failed to import translation module: {e}")
     st.stop()
 
+def extract_text_from_file(file):
+    try:
+        if file.type == "application/pdf":
+            pdf_reader = PdfReader(file)
+            text = ""
+            for page in pdf_reader.pages:
+                text += page.extract_text() or ""
+            return text.encode().decode('utf-8', errors='ignore').strip()
+        elif file.type == "application/vnd.openxmlformats-officedocument.wordprocessingml.document":
+            doc = docx.Document(file)
+            text = "\n".join([para.text for para in doc.paragraphs])
+            return text.encode().decode('utf-8', errors='ignore').strip()
+        elif file.type == "text/plain":
+            return file.read().decode('utf-8', errors='ignore').strip()
+        return ""
+    except Exception:
+        return ""
+
 def main():
     try:
         translation = importlib.import_module("translation")
@@ -34,16 +54,21 @@ def main():
             if input_type == "File":
                 uploaded_file = st.file_uploader("", type=["txt", "docx", "pdf"], key="file_input", label_visibility="hidden")
                 if uploaded_file and uploaded_file.size < 1024*1024:  # 1 MB limit
-                    st.session_state.input_text = uploaded_file.read().decode("utf-8").strip()
+                    st.session_state.input_text = extract_text_from_file(uploaded_file)
                 elif uploaded_file and uploaded_file.size >= 1024*1024:
                     st.error("File size must be less than 1 MB")
             st.button("Translate", key="translate_btn", on_click=trigger_translation, args=(translation, lang_detect, audio_processor,))
         with col2:
-            st.selectbox("Target", options=[f"{v[0]} ({v[1]})" for v in LANGUAGES.values()], index=list(LANGUAGES.values()).index(LANGUAGES["en"]), key="target_lang")
+            source_lang_display = st.session_state.source_lang.split(" (")[0] if " (" in st.session_state.source_lang else st.session_state.source_lang
+            target_options = [f"{v[0]} ({v[1]})" for v in LANGUAGES.values() if v[0] != source_lang_display and v[1] != source_lang_display]
+            st.selectbox("Target", options=target_options, index=target_options.index(f"{LANGUAGES['en'][0]} ({LANGUAGES['en'][1]})") if "English" not in source_lang_display else 0, key="target_lang")
             if "translated_text" in st.session_state:
                 st.text_area("", value=st.session_state.translated_text, height=300, key="output_text", disabled=True, label_visibility="hidden")
                 if st.button("🔊", key="audio_btn", on_click=play_audio, args=(audio_processor,), help="Play audio", use_container_width=False):
                     pass
+        # Footer
+        if "translated_text" in st.session_state:
+            st.markdown("<p style='text-align: center; color: #666;'>Developed by Krishna Prakash <a href='https://www.linkedin.com/in/krishna-prakash-123456' target='_blank'>LinkedIn</a></p>", unsafe_allow_html=True)
 
     except Exception as e:
         st.error(f"App error: {e}")
@@ -52,13 +77,14 @@ def trigger_translation(translation, lang_detect, audio_processor):
     text = st.session_state.get("input_text", "").strip()
     if text:
         source_lang = st.session_state.source_lang.split(" (")[0] if " (" in st.session_state.source_lang else st.session_state.source_lang
-        target_lang = next((k for k, v in LANGUAGES.items() if v[0] == st.session_state.target_lang.split(" (")[0]), "en")
+        target_lang = st.session_state.target_lang.split(" (")[0] if " (" in st.session_state.target_lang else st.session_state.target_lang
         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:
             source_lang_code = next((k for k, v in LANGUAGES.items() if v[0] == source_lang), "hi")
-        translated_text = translation.translate(text, source_lang_code, target_lang)
+        target_lang_code = next((k for k, v in LANGUAGES.items() if v[0] == target_lang), "en")
+        translated_text = translation.translate(text, source_lang_code, target_lang_code)
         st.session_state.translated_text = translated_text or text
 
 def play_audio(audio_processor):