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import streamlit as st
import importlib
from io import BytesIO
st.set_page_config(page_title="Multilingual Translator", page_icon="🌐", layout="centered")
# Import LANGUAGES from translation.py
try:
from translation import LANGUAGES
except ImportError as e:
st.error(f"Failed to import translation module: {e}")
st.stop()
def main():
try:
translation = importlib.import_module("translation")
lang_detect = importlib.import_module("lang_detect")
audio_processor = importlib.import_module("audio_processor")
# 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() 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":
st.text_area("", height=200, key="input_text", on_change=trigger_translation, args=(translation, lang_detect, audio_processor,), label_visibility="hidden")
else:
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("", 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.get("input_text", "").strip()
if text:
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 == "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")
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:
target_lang = next((k for k, v in LANGUAGES.items() if v[0] == st.session_state.target_lang), "en")
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")
if __name__ == "__main__":
main() |