"""TED Talks Summarizer App."""

from re import sub

from gradio import Interface, Series, Textbox
from requests import get


def clean_text(text):
    """Cleans subtitle text of ted talks.

    Args:
        text (str): subtitle of ted talk

    Returns:
        cleaned_text (str): cleaned version of subtitle text
    """
    # remove string inside parantheses (i.e appluse)
    text = sub(r"\(.*\)", "", text)
    # format text by splitting/removing new lines
    text = text.split("\n")[1:]
    # remove empty strings
    text = list(filter(None, text))
    # remove timestamps as they contains pattern of "-->"
    cleaned_text = " ".join([x.strip() for x in text if "-->" not in x])
    return cleaned_text


def ted_talk_transcriber(link):
    """Creates transcription of ted talks from url.

    Args:
        link (str): url link of ted talks

    Returns:
        cleaned_transcript (str): transcription of the ted talk
    """
    # request link of the talk
    page = get(link)
    # extract unique talk id to reach subtitle file
    talk_id = str(page.content).split("project_masters/")[1].split("/")[0]
    raw_text = get(
        f"https://hls.ted.com/project_masters/{talk_id}/subtitles/en/full.vtt"
    ).text
    cleaned_transcript = clean_text(raw_text)
    return cleaned_transcript


transcriber = Interface(
    ted_talk_transcriber,
    "text",
    "text",
)

summarizer = Interface.load(
    "huggingface/Shobhank-iiitdwd/long-t5-tglobal-base-16384-book-summary"
)

logo = "<center><img src='file/TED.png' width=180px></center>"

Series(
    transcriber,
    summarizer,
    inputs=Textbox(label="Type the TED Talks link"),
    examples=[
    "https://www.ted.com/talks/jen_gunter_the_truth_about_yeast_in_your_body"
             ],
    allow_flagging="never",
    description=logo,
).launch()