import streamlit as st
import epitran

# TODO: reverse transliterate? 

if __name__ == "__main__":
  iso_lang_code = st.text_input(
    label="Three-letter ISO-639-3 (https://iso639-3.sil.org/) language code", 
    value="swa"
    )
  st.write(f"iso code is {iso_lang_code}")
  
  iso_script_code = st.text_input(
    label="ISO 15924 (https://unicode.org/iso15924/iso15924-codes.html) script code, e.g. 'Latn' for Latin script, 'Hans' for Chinese script, etc.", 
    value="Latn"
    )
  st.write(f'iso code is {iso_script_code }')
  
  input_text = st.text_area(label="Whatever you type here will be transliterated!", value="Gari langu linaloangama limejaa na mikunga")
  
  combined_code = "-".join([iso_lang_code, iso_script_code])
  st.write(f"Combined code: {combined_code}")
  st.info("attempting to instantiate epitran transliterator for your language/script")
  epi = epitran.Epitran(combined_code)

  st.info(f"transliterating `{input_text}`\n\tusing {epi}...")  
  transliteration = epi.transliterate(input_text)
  
  st.success(transliteration)