import http.cookiejar as cookielib
import re

import browser_cookie3
import requests
from bs4 import BeautifulSoup

import Modules.config as config

session = requests.session()
if config.cookies is not None:  # add cookies if present
    cookies = cookielib.MozillaCookieJar(config.cookies)
    cookies.load()
    session.cookies = cookies


class download_complete(Exception):
    pass


def check_filter(title):
    search = 'YCH[a-z $-/:-?{-~!"^_`\\[\\]]*OPEN\
|OPEN[a-z $-/:-?{-~!"^_`\\[\\]]*YCH\
|YCH[a-z $-/:-?{-~!"^_`\\[\\]]*CLOSE\
|CLOSE[a-z $-/:-?{-~!"^_`\\[\\]]*YCH\
|YCH[a-z $-/:-?{-~!"^_`\\[\\]]*ABLE\
|AVAIL[a-z $-/:-?{-~!"^_`\\[\\]]*YCH\
|YCH[a-z $-/:-?{-~!"^_`\\[\\]]*CLONE\
|CLONE[a-z $-/:-?{-~!"^_`\\[\\]]*YCH\
|YCH[a-z $-/:-?{-~!"^_`\\[\\]]*LIM\
|LIM[a-z $-/:-?{-~!"^_`\\[\\]]*YCH\
|COM[a-z $-/:-?{-~!"^_`\\[\\]]*OPEN\
|OPEN[a-z $-/:-?{-~!"^_`\\[\\]]*COM\
|COM[a-z $-/:-?{-~!"^_`\\[\\]]*CLOSE[^r]\
|CLOSE[a-z $-/:-?{-~!"^_`\\[\\]]*COM\
|FIX[a-z $-/:-?{-~!"^_`\\[\\]]*ICE\
|TELEGRAM[a-z $-/:-?{-~!"^_`\\[\\]]*STICK\
|TG[a-z $-/:-?{-~!"^_`\\[\\]]*STICK\
|REM[insder]*\\b\
|\\bREF|\\bSale|auction|multislot|stream|adopt'

    match = re.search(
        search,
        title,
        re.IGNORECASE,
    )
    if match is not None and title == match.string:
        return True
    return None


def system_message_handler(s):
    try:
        message = {
            s.find(class_="notice-message")
            .find("div")
            .find(class_="link-override")
            .text.strip()
        }
    except AttributeError:
        message = (
            s.find("section", class_="aligncenter notice-message")
            .find("div", class_="section-body alignleft")
            .find("div", class_="redirect-message")
            .text.strip()
        )
    print(f"{config.WARN_COLOR}System Message: {message}{config.END}")
    raise download_complete


def login(user_agent):

    session.headers.update({"User-Agent": user_agent})

    CJ = browser_cookie3.load()

    response = session.get(config.BASE_URL, cookies=CJ)
    FA_COOKIES = CJ._cookies[".furaffinity.net"]["/"]

    cookie_a = FA_COOKIES["a"]
    cookie_b = FA_COOKIES["b"]

    s = BeautifulSoup(response.text, "html.parser")
    try:
        s.find(class_="loggedin_user_avatar")
        account_username = s.find(class_="loggedin_user_avatar").attrs.get("alt")
        print(f"{config.SUCCESS_COLOR}Logged in as: {account_username}{config.END}")
        with open("cookies.txt", "w") as file:
            file.write(
                f"""# Netscape HTTP Cookie File
# http://curl.haxx.se/rfc/cookie_spec.html
# This is a generated file!  Do not edit.
.furaffinity.net	TRUE	/	TRUE	{cookie_a.expires}	a	{cookie_a.value}
.furaffinity.net	TRUE	/	TRUE	{cookie_b.expires}	b	{cookie_b.value}"""
            )
        print(
            f'{config.SUCCESS_COLOR}cookies saved successfully, now you can provide them \
by using "-c cookies.txt"{config.END}'
        )
    except AttributeError:
        print(
            f"{config.ERROR_COLOR}Error getting cookies, either you need to login into \
furaffinity in your browser, or you can export cookies.txt manually{config.END}"
        )

    exit()


def next_button(page_url):
    response = session.get(page_url)
    s = BeautifulSoup(response.text, "html.parser")
    if config.submissions is True:
        # unlike galleries that are sequentially numbered, submissions use a different scheme.
        # the "page_num" is instead: new~[set of numbers]@(12 or 48 or 72) if sorting by new
        try:
            next_button = s.find("a", class_="button standard more").attrs.get("href")
        except AttributeError:
            try:
                next_button = s.find("a", class_="button standard more-half").attrs.get(
                    "href"
                )
            except AttributeError as e:
                print(f"{config.WARN_COLOR}Unable to find next button{config.END}")
                raise download_complete from e
        page_num = next_button.split("/")[-2]
    elif config.category != "favorites":
        next_button = s.find("button", class_="button standard", text="Next")
        if next_button is None or next_button.parent is None:
            print(f"{config.WARN_COLOR}Unable to find next button{config.END}")
            raise download_complete
        page_num = next_button.parent.attrs["action"].split("/")[-2]
    else:
        page_num = fav_next_button(s)
    print(f"Downloading page {page_num} - {page_url}")
    return page_num


def fav_next_button(s):
    # unlike galleries that are sequentially numbered, favorites use a different scheme.
    # the "page_num" is instead: [set of numbers]/next (the trailing /next is required)
    next_button = s.find("a", class_="button standard right", text="Next")
    if next_button is None:
        print(f"{config.WARN_COLOR}Unable to find next button{config.END}")
        raise download_complete
    next_page_link = next_button.attrs["href"]
    next_fav_num = re.search(r"\d+", next_page_link)

    if next_fav_num is None:
        print(f"{config.WARN_COLOR}Failed to parse next favorite link{config.END}")
        raise download_complete

    return f"{next_fav_num[0]}/next"