import os

abspath = os.path.abspath(__file__)
dname = os.path.dirname(abspath)
os.chdir(dname)

FEED_HEADER = """<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0">
<channel>
"""

from time import strftime, gmtime
FEED_TITLE = """
<title>{}</title>
<link>https://firmereferendum.giustizia.it/referendum/open</link>
<description>{}</description>
<language>it-it</language>
<pubDate>{}</pubDate>
<generator>makefeed.py</generator>
<ttl>720</ttl>
<docs>https://www.rssboard.org/rss-specification</docs>
<image>
  <url>https://serben.kantai.online/rsslogo.png</url>
  <title>Fac-simile logo della repubblica italiana</title>
  <link>https://firmereferendum.giustizia.it/referendum/open</link>
</image>
""".format(
    "NON UFFICIALE - Ministero della Giustizia - Referendum e iniziative popolari",
    "Aggiornamenti sui referendum ed iniziative popolari in fase di raccolta firme",
    strftime("%a, %-d %h %Y %H:%m:%S %z", gmtime())
)

FEED_FOOTER = """
</channel>
</rss>
"""

# strftime("%a, %-d %h %Y %H:%m:%S %z", gmtime())

URL_API = "https://firmereferendum.giustizia.it/referendum/api-portal/iniziativa/public"
URL_INFO = "https://firmereferendum.giustizia.it/referendum/open/dettaglio-open/"
AGENT = "Mozilla/5.0 (Windows; Windows NT 10.2;; en-US) Gecko/20100101 Firefox/52.7"

mesi = [
    "gennaio", "febbraio", "marzo", "aprile",
    "magggio", "giugno", "luglio", "agosto",
    "settembre", "ottobre", "novembre", "dicembre"
]

def date2it(date):
    date = date.split('-')
    return f"{date[2]} {mesi[int(date[1])-1]} {date[0]}"

def htmlescape(string):
    return string.replace('<','&lt;').replace('>','&gt;').replace('&', '&amp;')

from datetime import datetime
from zoneinfo import ZoneInfo
def dataIns_to_iso(date, date_time):
    time = date_time.split('T')[1]
    tz = datetime.fromisoformat(date)
    tz = tz.replace(tzinfo=ZoneInfo("Europe/Rome"))
    tz = tz.utcoffset().total_seconds() / 3600

    return_date = datetime.fromisoformat(date).strftime("%a, %-d %h %Y")
    return_date += f" {time}"
    return_date += f" {int(tz):+03}00"
    return return_date

def make_item(itemdata):
    # Do not include current votes in card, only quorum, as it is supposed to be immutable
    item_str = """
    <item>
    <title>{}</title>
    <guid>{}</guid>
    <link>{}</link>
    <pubDate>{}</pubDate>
    <description>{}</description>
    </item>
    """
    title = itemdata['titolo']
    link = URL_INFO + str(itemdata['id'])

    insert_time = itemdata['dataIns']
    validity = f"Puoi firmare per questa iniziativa dal {date2it(itemdata['dataInizioRaccolta'])} al {date2it(itemdata['dataFineRaccolta'])}"
    initiative_type = itemdata['idDecTipoIniziativa']['nome']
    text_description = itemdata['descrizione']
    pub_time = dataIns_to_iso(itemdata['dataGazzetta'], itemdata['dataIns'])

    website = ''
    if 'sito' in itemdata:
        itemdata['sito']
        website = f'<br>Sito dell\'iniziativa: <a href="{website}">{website}</a>'

    description = f"""
    <b>{initiative_type}</b><br>
    {text_description}<br>
    <br>
    <i>{validity}</i><br>
    """

    return item_str.format(title,link,link,pub_time,htmlescape(description))

import urllib.request, json

if __name__ == "__main__":
    print("Fetching data ...")
    data = json.loads(
        urllib.request.urlopen(
            urllib.request.Request(
                URL_API,
                data=None,
                headers={ 'User-Agent': AGENT }
            )
        ).read().decode('utf-8')
    )
    print("Fetch complete")

    if not data['resultDescription'] == "Successo":
        print("Error in fetching information")
        exit(1)

    with open('rss.xml', 'w') as file:
        file.write(FEED_HEADER + FEED_TITLE)
        for item in data['content']:
            file.write(make_item(item))
        file.write(FEED_FOOTER)