import bs4
import executor
import logging
import pypub
import requests


def fetchVolume(title, metadata, volume_title, output_dir, links):
    book = pypub.Epub(f"{title} - {volume_title}", **metadata)

    for link in links:
        chapter_response = requests.get(link["href"])
        chapter_html = bs4.BeautifulSoup(chapter_response.content, "html.parser")
        chapter_content = chapter_html.select_one("div.entry-content")
        chapter_title = chapter_html.select_one("h1.entry-title").get_text().strip()

        to_remove = [
            chapter_content.find_all("a"),
            chapter_content.find_all("h3"),
            chapter_content.find_all("hr"),
            chapter_content.find_all("img"),
            chapter_content.find_all("iframe"),
            chapter_content.find_all("script"),
            chapter_content.select("div.tiled-gallery"),
        ]

        for dataset in to_remove:
            for removed in dataset:
                removed.decompose()

        logging.log(logging.INFO, f"{title} - {chapter_title}")
        book.add_chapter(
            pypub.create_chapter_from_string(chapter_content.prettify(), chapter_title)
        )

    logging.log(logging.INFO, f"{title} - {volume_title}")
    book.create_epub(output_dir)


@executor.executor
def process(metadata, output_dir, url):
    response = requests.get(url)

    html = bs4.BeautifulSoup(response.content, "html.parser")
    content = html.select("div.entry-content > p")
    title = html.select_one("#site-title > span > a").get_text().strip()

    volume_title = None

    for paragraph in content:
        if paragraph.strong is not None:
            volume_title = paragraph.strong.get_text().strip()
        else:
            fetchVolume(
                title, metadata, volume_title, output_dir, paragraph.find_all("a")
            )