import itertools
import os
import re
from enum import Enum
from pprint import pprint
from urllib.parse import urlparse
import json

import pandas as pd

import spotipy
from spotipy.oauth2 import SpotifyOAuth

from config import *

class MusicSource(Enum):
    SPOTIFY = 'spotify'
    YOUTUBE = 'youtube'
    SOUNDCLOUD = 'soundcloud'
    BANDCAMP = 'bandcamp'
    OTHER = 'other'

os.environ['SPOTIPY_CLIENT_ID'] = SPOTIPY_CLIENT_ID
os.environ['SPOTIPY_CLIENT_SECRET'] = SPOTIPY_CLIENT_SECRET

SERVICES = {
    'open.spotify.com': MusicSource.SPOTIFY,
    'youtu.be': MusicSource.YOUTUBE,
    'www.youtube.com': MusicSource.YOUTUBE,
    'soundcloud.app.goo.gl': MusicSource.SOUNDCLOUD,
    'on.soundcloud.com': MusicSource.SOUNDCLOUD,
    'm.soundcloud.com': MusicSource.SOUNDCLOUD,
    'soundcloud.com': MusicSource.SOUNDCLOUD
}

class Link:
    def __init__(self, link, reply_to_message_id):
        self.link = link
        self.reply_to_message_id = reply_to_message_id
        self._source = None

    def __str__(self):
        return f"Source: {self.source()}, Link: {self.link}, Reply to Message ID: {self.reply_to_message_id}"
    
    def __repr__(self):
        return f"Link(link={repr(self.link)}, reply_to_message_id={repr(self.reply_to_message_id)})"

    def source(self):
        if self._source is None:
            o = urlparse(self.link)

            if re.match(r'([A-Za-z0-9\-]*\.)?bandcamp.com', o.hostname):
                self._source = MusicSource.BANDCAMP
            else:
                self._source = SERVICES.get(o.hostname, MusicSource.OTHER)

        return self._source

    
    @staticmethod
    def filter_links(links, music_source=None, reply_to_message_id=None):
        filtered_links = links

        if music_source is not None:
            filtered_links = [link for link in filtered_links if link.source() == music_source]

        if reply_to_message_id is not None:
            filtered_links = [link for link in filtered_links if link.reply_to_message_id == reply_to_message_id]

        return filtered_links

def _split_seq(iterable, size):
    it = iter(iterable)
    item = list(itertools.islice(it, size))
    while item:
        yield item
        item = list(itertools.islice(it, size))

def print_filtered_messages(filtered_messages):
    # Print the filtered messages
    for message in filtered_messages:
        reply_to_message_id = message["reply_to_message_id"]
        link = message["link"]
        print("Reply to Message ID:", reply_to_message_id)
        print("Link:", link)
        print()
    
    print(len(filtered_messages))

def extract_all_links(file_path):
    # Load the JSON file
    with open(file_path, "r", encoding="utf-8") as file:
        data = json.load(file)

    # Filter messages of type "message" and extract relevant information
    filtered_messages = []
    for message in data["messages"]:
        if message["type"] == "message":
            text_entries = message.get("text", [])
            for text_entry in text_entries:
                if isinstance(text_entry, dict) and text_entry.get("type") == "link":
                    reply_to_message_id = message.get("reply_to_message_id")
                    link = text_entry.get("text")
                    filtered_messages.append({"reply_to_message_id": reply_to_message_id, "link": link})

    return filtered_messages


def update_spotify_from_export(messages):
    links_w_source = [Link(link=row['link'], reply_to_message_id=row['reply_to_message_id'])
                      for row in messages]

    for l in links_w_source:
        print(l)

    spotify_links = []
    #yt_links = []
    #soundcloud_links = []
    #bandcamp = []
    #other_links = []

    # for i in links_w_source:
    #     if i.source() == MusicSource.SPOTIFY:
    #         spotify_links.append(i.link)
    #     elif i.source() == MusicSource.YOUTUBE:
    #         yt_links.append(i.link)
    #     elif i.source() == MusicSource.SOUNDCLOUD:
    #         soundcloud_links.append(i.link)
    #     elif i.source() == MusicSource.BANDCAMP:
    #         bandcamp.append(i.link)
    #     else:
    #         other_links.append(i.link)

    spotify_links = [l.link for l in filter(lambda x: x.source() == MusicSource.SPOTIFY and x.reply_to_message_id is None, links_w_source)]

    #print(spotify_links)
    #print(yt_links)
    #print(soundcloud_links)
    #print(bandcamp)
    #print(other_links)

    print(f'Spotify tracks: {len(spotify_links)}')

    # clean playlist itself from spotify links
    spotify_links = [s for s in spotify_links if not s.startswith('https://open.spotify.com/playlist/')]

    # support for links with language codes 
    spotify_links = [s.split("/intl-")[0] + "/track" + s.split("/track")[1] if ("open.spotify.com/intl-" in s and "track" in s) else s for s in spotify_links]


    print(sorted(spotify_links))

    scope = "playlist-modify-private"
    os.environ['SPOTIPY_REDIRECT_URI'] = 'http://127.0.0.1:9090'

    sp = spotipy.Spotify(auth_manager=SpotifyOAuth(scope=scope))
    sp.playlist(SPOTIFY_PLAYLIST_ID)
    

    # paginated update of spotify playlist
    for i, sublist in enumerate(_split_seq(spotify_links, 100)):
        if i==0:
            sp.playlist_replace_items(SPOTIFY_PLAYLIST_ID, sublist)
        else:
            sp.playlist_add_items(SPOTIFY_PLAYLIST_ID, sublist)


if __name__ == '__main__':
    filtered_messages = extract_all_links("ChatExport_2023-06-28/result.json")
    update_spotify_from_export(filtered_messages)