add language detection

app.py

@@ -177,10 +177,11 @@ if st.button("Run"):
         lang_type = LANGUANGE_MAP[preds.item()]
         
         if lang_type not in lang_id:
+            time_end = time.time()
             st.success('Unsupported Language')
             st.write(f"Computation time: {round((time_end-time_start),3)} segs")
         else:
-            src_lang = lang_id[]
+            src_lang = lang_id[lang_type]
             trg_lang = lang_id[target_lang]
             tokenizer.src_lang = src_lang
             encoded_input = tokenizer(user_input, return_tensors="pt").to(device)