import gradio as gr


from translation import Translator, LANGUAGES
LANGUAGES_LIST = list(LANGUAGES.keys())


def translate_wrapper(text, src, trg, by_sentence=True, preprocess=True, random=False, num_beams=4):
    src_lang = LANGUAGES.get(src)
    tgt_lang = LANGUAGES.get(trg)
    # if src == trg:
    #     return 'Please choose two different languages'
    result = translator.translate(
        text=text,
        src_lang=src_lang,
        tgt_lang=tgt_lang,
        do_sample=random,
        num_beams=int(num_beams),
        by_sentence=by_sentence,
        preprocess=preprocess,
    )
    return result


article = """
This is a NLLB-200-600M model fine-tuned for translation between Russian and Tyvan (Tuvan) languages,
using the data from https://tyvan.ru/.

This model is described in https://cointegrated.medium.com/a37fc706b865.

If you want to host in on your own backend, consider running this dockerized app: https://github.com/slone-nlp/nllb-docker-demo.
"""


interface = gr.Interface(
    translate_wrapper,
    [
        gr.Textbox(label="Text", lines=2, placeholder='text to translate '),
        gr.Dropdown(LANGUAGES_LIST, type="value", label='source language', value=LANGUAGES_LIST[0]),
        gr.Dropdown(LANGUAGES_LIST, type="value", label='target language', value=LANGUAGES_LIST[1]),
        gr.Checkbox(label="by sentence", value=True),
        gr.Checkbox(label="text preprocesing", value=True),
        gr.Checkbox(label="randomize", value=False),
        gr.Dropdown([1, 2, 3, 4, 5], label="number of beams", value=4),
    ],
    "text",
    title='Tyvan-Russian translaton',
    article=article,
)


if __name__ == '__main__':
    translator = Translator()

    interface.launch()