#!/usr/bin/env python3

import hashlib
import io
import json
import os
import pickle
import threading
from datetime import datetime

import feedparser
import requests
import wx
from bs4 import BeautifulSoup

from Channel import Channel
from Items import Item
from Utils import make_bitmap_from_url, resolve_svt_channel

default_rss_url = 'http://www.svtplay.se/rss.xml'


class SVT(Channel):
    m_cache: dict = dict()
    m_cachefile = '/tmp/svt_cache'

    def __init__(self, svt_id: str) -> None:
        chan_dict = resolve_svt_channel(svt_id)
        super().__init__('SVT', default_rss_url, chan_dict['thumbnail_url'])

        if os.path.exists(self.m_cachefile):
            with open(self.m_cachefile, 'rb') as cachehandle:
                self.m_cache = pickle.load(cachehandle)
        self.m_thr = threading.Thread(target=self.parse_feed,
                                      args=[svt_id],
                                      kwargs={})
        self.m_thr.start()

    def wait(self) -> bool:
        return self.m_thr.is_alive()

    def parse_feed(self, *args, **kwargs) -> None:
        svt_id = args[0]
        feed = feedparser.parse(self.get_feed())
        entries = feed['entries']
        self.m_items: list[Item] = list()

        if svt_id == 'feed':
            for entry in entries:
                key = hashlib.sha256(entry['link'].encode('utf-8')).hexdigest()

                if key in self.m_cache.keys():
                    thumbnail_link = self.m_cache[key]['thumbnail_link']
                    resolved_link = self.m_cache[key]['resolved_link']
                    description = self.m_cache[key]['description']
                    published_parsed = self.m_cache[key]['published_parsed']
                    title = self.m_cache[key]['title']
                else:

                    for link in entry['links']:
                        if str(link['type']).startswith('image/'):
                            thumbnail_link = str(link['href'])

                            break
                    page = requests.get(str(entry['link']))
                    soup = BeautifulSoup(page.text, 'html.parser')

                    for element in soup.find_all('a'):
                        href = element.get('href')
                        datart = element.get('data-rt')

                        if datart == 'top-area-play-button':
                            svt_id = href.split('=')[1].split('&')[0]

                    resolved_link = resolve_link(svt_id)
                    description = str(entry['description'])
                    published_parsed = entry['published_parsed']
                    title = str(entry['title'])
                self.m_cache[key] = {'thumbnail_link': thumbnail_link}
                self.m_cache[key]['resolved_link'] = resolved_link
                self.m_cache[key]['description'] = description
                self.m_cache[key]['published_parsed'] = published_parsed
                self.m_cache[key]['title'] = title
                thumbnail = make_bitmap_from_url(thumbnail_link)
                if resolved_link:
                    item = Item(description, resolved_link,
                                self.m_provider_name, published_parsed,
                                thumbnail, title)
                    self.m_items.append(item)

            # write to cache file
            with open(self.m_cachefile, 'wb') as cachehandle:
                pickle.dump(self.m_cache, cachehandle)
        else:
            chan_dict = resolve_svt_channel(svt_id)
            resolved_link = resolve_link(svt_id)
            title = chan_dict['name']
            published_parsed = datetime.now()
            description = "Live channel stream"
            thumbnail = make_bitmap_from_url(chan_dict['thumbnail_url'])
            if resolved_link:
                item = Item(description, resolved_link, self.m_provider_name,
                            published_parsed, thumbnail, title)
                self.m_items.append(item)


def resolve_link(svt_id: str) -> str:
    api = json.loads(
        requests.get('https://api.svt.se/video/{}'.format(svt_id)).text)
    resolved_link = ''

    try:
        for reference in api['videoReferences']:
            if reference['format'] == "dashhbbtv":
                resolved_link = reference['url']
    except KeyError:
        pass
    return resolved_link