from datetime import datetime
import daemon
import requests
import time
from time import sleep
import os
import re
from bs4 import BeautifulSoup
import dotenv

CONFIG = dotenv.dotenv_values(".env")


def read_known() -> list:
    known: list = []
    try: 
        with open(CONFIG['STORAGE_FILE'], 'r+') as f:
            known = f.read().splitlines()
            f.close()

    except Exception as e:
        print("Could not initialize known titles: %s" % e)

    print("="*120 + "\nLoading from file\n" + "="*120)
    for item, index in zip(known, range(0, len(known))):
        print(f"{index}:\t{item}")

    print("="*120)
    return known

def daemon():

    try:
        while True:
            r = requests.get(CONFIG['URL'])
            soup = BeautifulSoup(r.content, features='xml')        
            articles = soup.findAll('item')                
            article_list: list = []
            for a in articles:
                title: str = str(a.find('title')).replace("<title>", "").replace("</title>", "")
                desc: str = str(a.find('description')).replace("<description>", "").replace("</description>", "")
                link: str = str(a.find('enclosure'))
                link = re.sub(r"<.*>", "", link)
                dur: str = str(a.find('duration')).replace("<duration>", "").replace("</duration>", "")
                pub: str = str(a.find('pubDate')).replace("<pubDate>", "").replace("</pubDate>", "")
                article = {
                    'title': title,
                    'desc': desc,
                    'link': link,
                    'dur': dur,
                    'pub': pub
                    }
                article_list.append(article)        

            known: list = read_known()
            for a in article_list:
                if a['title'] in known:
                    print("found known: %s" % a['title'])

                else:
                    print("found unknown: %s" % a['title'])

                    title = a['title']
                    desc = a['desc']
                    link = a['link']
                    dur = a['dur']
                    pub = a['pub']

                    content = f"""
=============== Neue Folge =============== 
Titel:  {title}

Beschreibung:
{desc}

Link:   {link}
Datum:  {pub}
Länge:  {dur}
==========================================
                    """

                    print(content)

                    #notify = requests.post(
                    #        url=WEBHOOK,
                    #        json={
                    #            "content": content
                    #        }
                    #        )
                    #print(notify.text)

                    known.append(a['title'])

                    with open(CONFIG['STORAGE_FILE'], 'w+') as file:
                        try:
                            for item in known:
                                file.write(item + '\n')
                        except Exception as e:
                            print("Could not write to file: %s" % e)
                            pass
                        finally:
                            file.close()

                    time.sleep(0.5)

            print("="*120 + "\nentering sleep for %d seconds at %s" % (int(CONFIG['SLEEP_SECS']), datetime.now()))
            print("="*120)
            sleep(int(CONFIG['SLEEP_SECS']))
    except ValueError as e:
        print(e)
        pass

if __name__ == "__main__":
    daemon()

with daemon.DaemonContext():
    daemon()