# -*- coding: utf-8 -*-

# !pip -q uninstall gradio -y
# !pip -q install gradio==3.50.2

# !pip -q install datasets

import gradio as gr
import numpy as np
import torch
from datasets import load_dataset

from transformers import SpeechT5ForTextToSpeech, SpeechT5HifiGan, SpeechT5Processor, pipeline, WhisperProcessor

device = "cuda:0" if torch.cuda.is_available() else "cpu"

# load speech translation checkpoint
asr_pipe = pipeline("automatic-speech-recognition", model="voidful/wav2vec2-xlsr-multilingual-56", device=device)


processor = WhisperProcessor.from_pretrained(
    "openai/whisper-small")

translator1 = pipeline("translation", model="Helsinki-NLP/opus-mt-mul-en")
translator2 = pipeline("translation", model="Helsinki-NLP/opus-mt-en-ru")

from transformers import VitsModel, VitsTokenizer

model = VitsModel.from_pretrained("facebook/mms-tts-rus")
tokenizer = VitsTokenizer.from_pretrained("facebook/mms-tts-rus")

def translator_mul_ru(text):

    translation  = translator2(translator1(text)[0]['translation_text'])
    return translation[0]['translation_text']

def translate(audio):
    outputs = asr_pipe(audio, max_new_tokens=256, generate_kwargs={"task": "translate"})
    return outputs["text"]


def synthesise(text):
    translated_text = translator_mul_ru(text)
    inputs = tokenizer(translated_text, return_tensors="pt")
    input_ids = inputs["input_ids"]

    with torch.no_grad():
        outputs = model(input_ids)
    speech = outputs["waveform"]
    return speech.cpu()


def speech_to_speech_translation(audio):
    translated_text = translate(audio)
    print(translated_text)
    synthesised_speech = synthesise(translated_text)
    synthesised_speech = (synthesised_speech.numpy() * 32767).astype(np.int16)
    return 16000, synthesised_speech[0]

title = "Cascaded STST. Any language to russian"
description = """
* В качестве ASR модели была выбрана - https://huggingface.co/voidful/wav2vec2-xlsr-multilingual-56, если поставить фильтры multilingual и wav2vec, то эта модель самая популярная после фейсбуковских - 
https://imgur.com/UNH5ym1
* Далее идет перевод с языка, на котором была запись, на английский, и после этого на русский 
* Потом переведенный текст воспроизводится на русском языке 

"""

demo = gr.Blocks()

mic_translate = gr.Interface(
    fn=speech_to_speech_translation,
    inputs=gr.Audio(source="microphone", type="filepath"),
    outputs=gr.Audio(label="Generated Speech", type="numpy"),
    title=title,
    description=description,
)

file_translate = gr.Interface(
    fn=speech_to_speech_translation,
    inputs=gr.Audio(source="upload", type="filepath"),
    outputs=gr.Audio(label="Generated Speech", type="numpy"),
    title=title,
    description=description,
)

with demo:
    gr.TabbedInterface([mic_translate, file_translate], ["Microphone", "File"])

demo.launch()