#!/usr/bin/python3

"""Parse shelves and output web page."""

import json
import os
import re
import sys
import typing
from time import sleep

import jinja2
import lxml.html
import requests

parser = lxml.html.HTMLParser(encoding="utf-8")

env = jinja2.Environment(loader=jinja2.FileSystemLoader("templates"))

re_book = re.compile(
    r"function refreshGroupBox(group_id, book_id) \{(.*?)\n *\}", re.DOTALL
)
re_book = re.compile(
    r"function refreshGroupBox\(group_id, book_id\) \{(.*?)\n *\}", re.DOTALL
)

re_tip = re.compile(r'var newTip = new Tip\(\$\(\'[^\']+\'\), "(.*?)", {')

dirs = ["shelf", "genre"]
start = "https://www.goodreads.com/book/show/"

existing = {book["title"] for book in json.load(open("calibre_book_list.json"))}


def parse_book_div(div: lxml.html.HtmlElement) -> dict[str, typing.Any]:
    """Parse book div."""
    link = div.find(".//a")
    assert link is not None
    rating = div.find('.//span[@class="minirating"]')
    description = div.find('./div[@class="bookDescription"]')
    assert rating is not None and rating[0] is not None
    r = rating[0].tail
    assert r

    div_next = div.getnext()
    assert div_next is not None
    cover_img = div_next.find(".//img")
    assert cover_img is not None
    cover = cover_img.get("src")

    book = {
        "title": link.text,
        "url": link.get("href"),
        "rating": r,
        "r": float(r[:3].strip()),
        "cover": cover,
        "authors": [a.text for a in div.find_class("authorName")],
    }
    if description is not None:
        index = 1 if len(description) == 3 else 0
        book["description"] = description[index].text

    return book


def iter_books():
    for d in dirs:
        for f in sorted(os.listdir(d)):
            filename = os.path.join(d, f)
            root = lxml.html.parse(filename, parser=parser).getroot()
            for div in root.find_class("bookInformation"):
                book = parse_book_div(div)
                yield d, f, book
            continue

            # print(filename)
            for line in open(filename, "rb"):
                if b"var newTip" not in line:
                    continue
                print(line)
                m = re_tip.search(line)
                tip = m.group(1).decode("unicode_escape").replace(r"\/", "/")
                # tip = m.group(1)  # .replace('\/', '/')
                # print(tip)
                if '<ul class="formatting_tips recommendation_tip">' in tip:
                    continue
                if "Recommendations are disabled for that shelf." in tip:
                    continue
                if "Customize by selecting your" in tip:
                    continue
                print(tip)
                yield (d, f, lxml.html.fromstring(tip))


def main() -> None:
    """Download books."""
    template = env.get_template("books.html")
    seen = set()
    books = []
    first_authors = set()
    for d, f, book in sorted(iter_books(), key=lambda i: i[2]["r"], reverse=True):
        # pprint(book)
        # print(repr(book.get('description')))
        # continue

        # title_link = book.find_class('bookTitle')[0]
        url = book["url"]
        url = url[: url.find("?")]
        if url in seen:
            continue
        seen.add(url)
        title = book["title"]
        authors = book["authors"]
        first_authors.add(authors[0])
        main_title = title
        # for sep in ['(']:
        for sep in ":", " - ", "(", ",":
            if sep in title:
                main_title = title[: title.find(sep)]
                break
        # print((main_title + ' by ' + u', '.join(authors)).encode('utf-8'))
        if len(main_title) < 10:
            continue
        if main_title in existing:
            continue
        # print(u'{} by {}'.format(main_title, authors[0]).encode('utf-8'))
        print("{}".format(main_title))
        # print(main_title.encode('utf-8'))
        assert url.startswith(start)

        filename = "books/" + url[len(start) :] + ".html"
        # print(filename)
        if False and not os.path.exists(filename):
            open(filename, "w").write(requests.get(url).content)
            sleep(1)
        books.append(
            {
                "dir": d,
                "file": f[:-5],
                "title": title,
                "main_title": main_title,
                "authors": authors,
                "url": url,
                "rating": book["rating"],
                "cover": book["cover"],
                "description": book.get("description"),
            }
        )

    page = template.render(books=books)
    open("book_list.html", "w").write(page)
    sys.exit(0)

    for a in sorted(first_authors):
        print(a)

    # authors = u' OR '.join(u'"{}"'.format(a) for a in sorted(first_authors)
    # if a not in {'Hugh Howey', 'Elizabeth Moon', 'Max Hastings'})
    # print(authors.encode('utf-8'))


if __name__ == "__main__":
    main()