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#!/usr/bin/env python3
from html.parser import HTMLParser
from urllib.request import urlopen
from urllib.parse import urlencode, urlparse
from json import loads as json_loads


class AppleMusic:
    video_type = ""

    def mesg(self, msg, t=None):
        self.util.mesg(msg, t)

    def match_urls(self, str):
        r = [i for i in str.split() if "https://music.apple.com" in i]
        r = list(dict.fromkeys(r))
        n = 0
        for i in r:
            if not i.startswith("http"):
                r.pop(n)
            n += 1

        return r

    class parseprop(HTMLParser):
        def __init__(self):
            # print("applemusic parse init")
            HTMLParser.__init__(self)
            self.ldjson = False

        def handle_starttag(self, tag, attrs):
            if tag == "script" and ("type", "application/ld+json") in attrs:
                self.ldjson = True
            else:
                self.ldjson = False

        def handle_endtag(self, tag):
            self.ldjson = False

        def handle_data(self, data):
            if self.ldjson:
                AppleMusic.ldjson = data
                return

    def is_album(self, url):
        return "/album/" in url

    def applemusic_oembed(self, url):
        url = urlparse(url)
        url = url.scheme + "://" + url.netloc + url.path
        url = f"https://music.apple.com/api/oembed?{urlencode([('url',url),('format','json')])}"
        data = urlopen(url).read().decode()
        # print(data)
        data = json_loads(data)
        try:
            artist = data["author_name"]
            title = data["title"].removesuffix(" by " + artist)
        except KeyError:
            title = ""
            artist = ""
        return title, artist

    def applemusic_ldjson(self, url):
        p = self.parseprop()
        data = urlopen(url).read().decode()
        p.feed(data)
        # print(AppleMusic.ldjson)
        data = json_loads(AppleMusic.ldjson)
        # print(data)
        title = data["name"]
        artists = data["audio"]["byArtist"]
        artists = [i["name"] for i in artists]
        artists = ", ".join(artists[:-1]) + " & " + artists[-1]
        return title, artists, data

    def applemusic(self, url):
        # self.util.mesg("dbg hello")
        url = url.rstrip("\x01")
        title = ""
        artist = ""
        irc_string = "[\x0304AppleMusic\x03] \x0307ERROR:\x0308 got no data from server! \x0315(check your URL for typos!)\x03"
        ansi_string = "[\x1b[31mAppleMusic\x1b[0m] \x1b[33;2mERROR:\x1b[33;1m got no data from server! \x1b[37;2m(check your URL for typos!)\x1b[0m"
        if self.is_album(url):
            title, artist = self.applemusic_oembed(url)
        else:
            title, artist, data = self.applemusic_ldjson(url)
            try:
                type = data["@type"]
            except KeyError:
                print(ansi_string)
                return irc_string, True

        if title == "":
            print(ansi_string)
            return irc_string, True
        irc_string = (
            f"[\x0303AppleMusic\x03] \x02{title}\x02 uploaded by \x1d{artist}\x1d"
        )
        ansi_string = f"[\x1b[32mAppleMusic\x1b[0m] \x1b[1m{title}\x1b[0m uploaded by \x1b[03m{artist}\x1b[0m"
        # """
        # irc_string="dummy";ansi_string="dummy"
        print(ansi_string)
        return irc_string, False


if __name__ == "__main__":
    import sys

    # AppleMusic.applemusic(AppleMusic, sys.argv[1])
    AppleMusic().applemusic(sys.argv[1])