app.py

import base64
import json
import os

import modal
import streamlit as st
from loguru import logger
from pydub import AudioSegment

run_transcription = modal.lookup("ffpub-transcription", "run_transcription")

st.set_page_config(page_title="Speech to Text Transcription App")


@st.cache(show_spinner=False)
def transcribe(url, audio_b64, cutoff):
    return run_transcription.call(url=url, audio_b64=audio_b64, cutoff=None)


def password_is_correct(password):
    return password in [os.environ["PASSWORD"], os.environ["ROOT_PASSWORD"]]


def input_is_ready(password, audio_file, url):
    return password_is_correct(password) and (audio_file or url)


def run():
    st.markdown(
        "<style>section.main > div:first-child { padding: 0}</style>",
        unsafe_allow_html=True,
    )

    submit_button = False
    if "is_expanded" not in st.session_state:
        st.session_state["is_expanded"] = True

    # expander = st.expander("Einstellungen", expanded=st.session_state["is_expanded"])
    # with expander:
    password = st.text_input("Zugriffscode (siehe oben)")
    url = audio_file = None

    col1, col2 = st.columns([1, 3])
    type = col1.radio(
        "Input",
        ["Beispiel (Kabarett)", "URL (YouTube, …)", "Datei-Upload"],
    )
    if type == "Beispiel (Kabarett)":
        url = col2.text_input(
            "URL (e.g. YouTube video, Dropbox file, etc.)",
            value="https://www.youtube.com/watch?v=6UONiGMmbS4",
            disabled=True,
        )
    elif type == "URL (YouTube, …)":
        url = col2.text_input(
            "URL (e.g. YouTube video, Dropbox file, etc.)",
            value="",
        )
    else:
        audio_file = col2.file_uploader(
            "Datei auswählen", type=[".wav", ".mp3", ".flac", ".m4a", ".ogg"]
        )

    submit_button = col2.button(
        label="⚡ Transkribieren"
        + (" (Zugriffscode inkorrekt)" if not password_is_correct(password) else ""),
        disabled=(not password_is_correct(password) or (not audio_file and not url)),
    )

    cutoff = audio_b64 = None
    if audio_file or url:
        with st.expander(("Audio" if audio_file else "Video") + " abspielen"):
            if audio_file:
                st.audio(audio_file)
                cutoff = None if password == os.environ["ROOT_PASSWORD"] else 60_000
                audio_file = AudioSegment.from_file(audio_file)[:cutoff]
                audio_b64 = base64.b64encode(audio_file.export().read()).decode("ascii")
            if url:
                st.video(url)

    if input_is_ready(password, audio_file, url) and submit_button:
        # my_bar = st.progress(0)
        # for percent_complete in range(100):
        #     time.sleep(1)
        #     my_bar.progress(percent_complete + 1)

        with st.spinner("Transkription läuft..."):
            transcription = transcribe(url, audio_b64, cutoff)

        col1, col2 = st.columns([1, 1])
        col1.download_button(
            label="⬇️ Transkript",
            data=transcription["text"],
            file_name="transkript.txt",
            mime="text/plain",
        )

        col2.download_button(
            label="⬇️ OTR-Datei",
            data=json.dumps(transcription["otr"], indent=2, ensure_ascii=False),
            file_name="transkript.otr",
            mime="application/json",
        )

        st.text_area("Transkript", transcription["text"], height=300)


try:
    run()
except Exception as e:
    logger.error(e)
    st.error(
        "Leider ist ein unerwarter Fehler aufgetreten. Ich kann mir das Problem sofort ansehen, Sie erreichen mich unter alexander.seifert@gmail.com"
    )