#!/usr/bin/env python3
from html.parser import HTMLParser
from urllib.request import urlopen
import json

class Spotify:

    def __init__(self):
        self.ldjson=None

    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://open.spotify.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("spotify 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:
        		Spotify.ldjson=data
        		return

    def spotify(self, url):
        url = url.rstrip("\x01")
        p = self.parseprop()
        data = urlopen(url).read().decode()
        p.feed(data)
        irc_string = "[\x0304Youtube\x03] \x0307ERROR:\x0308 got no data from server! \x0315(check your URL for typos!)\x03"
        ansi_string = "[\x1b[31mYoutube\x1b[0m] \x1b[33;2mERROR:\x1b[33;1m got no data from server! \x1b[37;2m(check your URL for typos!)\x1b[0m"
        data=(json.loads(Spotify.ldjson))
        try: type=data["@type"]
        except KeyError:
          print(ansi_string)
          return irc_string, True
        id=data["@id"]
        name=data["name"]
        date=data["datePublished"]
        artists=data["description"]
        artists=artists.removeprefix(f'Listen to {name} on Spotify')
        artists=artists.removeprefix('.').strip()
        artists=artists.removeprefix('· ')
        if artists.startswith("Song · "): artists=artists.removeprefix("Song · ")
        elif artists.startswith("Album · "):
          artists=artists.removeprefix("Album · ")
          artists=artists[::-1].split(" · ",1)[1][::-1] #removes the "10 songs" part from album
        artists=artists.removesuffix(f" · {date[:4]}")  #remove the year too
        #print(type,id,name,"|"+artists+"|",date)
        irc_string = f"[\x0303Spotify\x03] \x02{name}\x02 by \x1d{artists}\x1d published on {date}"
        ansi_string = f"[\x1b[32mSpotify\x1b[0m] \x1b[1m{name}\x1b[0m by \x1b[03m{artists}\x1b[0m published on {date}"
        #print(("Song: " if type=="MusicRecording" else "Album: " if type=="MusicAlbum" else f"Unknown type ({type}): ")+'"'+name+'"'+" by "+'"'+artists+'"'+" released on "+date)
        #irc_string="dummy"
        print(ansi_string)
        return irc_string, False


if __name__ == "__main__":
    import sys

    Spotify.premature_optimization = False
    Spotify.spotify(Spotify, sys.argv[1])