import re
import struct
import sys
import urllib.request as urllib2
import aiohttp

key = "b9803d262fab977f:04c791f69496359d638fc634e60c08d0"


def hasNumbers(inputString):
    return any(char.isdigit() for char in inputString)


def process_stream_title(title: str) -> list:
    l = title.split(' - ', 1)
    if l[0].isdigit():
        return l[1].rsplit(" - ", 1)
    return title.rsplit(" - ", 1)


async def fetch_metadata():
    url = "https://azuracast.exobot.site/api/nowplaying"
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            data = await response.json()
            source = data["playing_next"]["text"]
            name, vid = process_stream_title(source["title"])
            return {"name": name, "thumbnail": data["playing_next"]["art"]}


async def get_metadata():
    """Deprecated: use fetch_metadata()"""
    url = 'https://icecast.exobot.site/stream'    # radio stream
    encoding = 'iso-8859-1'    # default: iso-8859-1 for mp3 and utf-8 for ogg streams
    request = urllib2.Request(url, headers={'Icy-MetaData':
                                            1})    # request metadata
    response = urllib2.urlopen(request)
    # print(response.headers, file=sys.stderr)
    metaint = int(response.headers['icy-metaint'])
    for _ in range(10):    # title may be empty initially, try several times
        response.read(metaint)    # skip to metadata
        metadata_length = struct.unpack(
            'B', response.read(1))[0] * 16    # length byte
        metadata = response.read(metadata_length).rstrip(b'\0')
        # print(metadata, file=sys.stderr)
        # extract title from the metadata
        m = re.search(br"StreamTitle='([^']*)';", metadata)
        if m:
            title = m.group(1)
            if title:
                break
    else:
        sys.exit('no title found')

    title = title.decode(encoding, errors='replace')
    #print(f"DEBUG: {title}")
    if hasNumbers(str(title[:4])):
        return title[7:][:-14]
    else:
        return title[:-14]