# plex_playlist_sync.py (Den fullständiga koden från mitt tidigare svar)

# Importera konfiguration och hjälpfunktioner från dina befintliga filer
from config import (
    LASTFM_API_KEY, LASTFM_API_SECRET, LASTFM_USERNAME,
    PLEX_BASEURL, PLEX_TOKEN,
    MIN_PLAYS, RECENT_MONTHS, MAX_SIMILAR_PER_ART, SIMILAR_MATCH_MIN,
    CACHE_TTL_HOURS, DEBUG_PRINT
)
from lastfm_helpers import lf_request, recent_artists
from musicbrainz_helpers import load_cache, save_cache # Används för cache

import pylast
from plexapi.server import PlexServer
import datetime
import time
import logging

logging.basicConfig(level=logging.INFO)
log = logging.getLogger("PlexPlaylistSync")

try:
    LASTFM_NETWORK = pylast.LastFMNetwork(
        api_key=LASTFM_API_KEY,
        api_secret=LASTFM_API_SECRET,
        username=LASTFM_USERNAME
    )
except Exception as e:
    log.error(f"Kunde inte initiera Last.fm-nätverket. Kontrollera nycklar/användarnamn: {e}")
    LASTFM_NETWORK = None

def get_artist_top_tracks(artist_name, limit=5):
    if not LASTFM_NETWORK:
        return []
    try:
        artist = LASTFM_NETWORK.get_artist(artist_name)
        top_tracks = artist.get_top_tracks(limit=limit)
        return [{"artist": track.item.artist.name, "title": track.item.title} for track in top_tracks]
    except Exception as e:
        log.warning(f"Kunde inte hämta top-spår för '{artist_name}' från Last.fm: {e}")
        return []

def create_lastfm_recommended_playlist():
    start_time = time.time()
    log.info("🚀 Börjar processen för att skapa Last.fm-baserade spellistor i Plex.")

    try:
        plex = PlexServer(PLEX_BASEURL, PLEX_TOKEN)
        log.info(f"✅ Ansluten till Plex Media Server: {plex.baseurl}")
    except Exception as e:
        log.error(f"❌ Kunde inte ansluta till Plex Server: {e}")
        log.error("Kontrollera PLEX_BASEURL och PLEX_TOKEN i config_local.py.")
        return

    music_library = None
    try:
        music_library = plex.library.section('Music')
        log.info(f"Använder Plex-biblioteket: '{music_library.title}'")
    except Exception as e:
        log.error(f"❌ Kunde inte hitta musikbiblioteket 'Music' i Plex: {e}")
        log.error("Kontrollera namnet på ditt musikbibliotek i Plex.")
        return

    artists_for_playlist = []
    cache = load_cache()
    added_artists_mbids = cache.get("added_artists", [])
    
    log.info("Samlar in artister för spellistan...")
    for mbid in added_artists_mbids:
        try:
            artist_info = LASTFM_NETWORK.get_artist_by_mbid(mbid)
            artists_for_playlist.append(artist_info.name)
        except Exception:
            log.debug(f"Kunde inte hitta namn för MBID: {mbid} via pylast.")
            pass

    recent_played_artists = recent_artists()
    for name, mbid in recent_played_artists[:10]:
        if name not in artists_for_playlist:
            artists_for_playlist.append(name)
            
    if not artists_for_playlist:
        log.info("Inga artister hittades för att skapa en spellista. Se till att Last.fm-synkroniseringen har kört.")
        return

    log.info(f"Hittade {len(artists_for_playlist)} unika artister för att bygga spellistan.")

    all_recommended_tracks_info = []
    for artist_name in artists_for_playlist:
        top_tracks = get_artist_top_tracks(artist_name, limit=3)
        all_recommended_tracks_info.extend(top_tracks)

    unique_tracks_to_add = []
    seen_track_identifiers = set()

    log.info(f"Söker efter {len(all_recommended_tracks_info)} potentiella spår i Plex-biblioteket...")
    for track_info in all_recommended_tracks_info:
        artist_name = track_info["artist"]
        track_title = track_info["title"]
        identifier = f"{artist_name}-{track_title}"

        if identifier in seen_track_identifiers:
            continue

        found_plex_track = None
        try:
            results = music_library.search(f"{artist_name} {track_title}", libtype='track')
            
            for item in results:
                if item.artist() and item.artist().title.lower() == artist_name.lower() and item.title.lower() == track_title.lower():
                    found_plex_track = item
                    break
            
        except Exception as e:
            log.warning(f"Fel vid Plex-sökning efter '{track_title}' av '{artist_name}': {e}")
            
        if found_plex_track:
            unique_tracks_to_add.append(found_plex_track)
            seen_track_identifiers.add(identifier)
            log.info(f"  ✅ Hittade: {found_plex_track.artist().title} - {found_plex_track.title}")
        else:
            log.info(f"  ❌ Hittade inte: '{track_title}' av '{artist_name}' i Plex.")

    if not unique_tracks_to_add:
        log.info("Inga nya matchande låtar hittades i Plex för att skapa en spellista.")
        return

    current_date = datetime.datetime.now().strftime("%Y-%m")
    playlist_name = f"Last.fm Rekommendationer {current_date}"

    playlist = None
    try:
        playlist = plex.playlist(playlist_name)
        log.info(f"Spellistan '{playlist_name}' finns redan.")
    except Exception:
        log.info(f"Skapar ny spellista: '{playlist_name}'")

    if playlist:
        existing_playlist_items = playlist.items()
        new_items_to_add = [track for track in unique_tracks_to_add if track not in existing_playlist_items]
        
        if new_items_to_add:
            try:
                playlist.addItems(new_items_to_add)
                log.info(f"Lade till {len(new_items_to_add)} nya låtar i befintlig spellista '{playlist_name}'.")
            except Exception as e:
                log.error(f"Kunde inte lägga till låtar i befintlig spellista: {e}")
        else:
            log.info(f"Inga nya låtar att lägga till i befintlig spellista '{playlist_name}'.")
    else:
        try:
            new_playlist = plex.createPlaylist(playlist_name, items=unique_tracks_to_add)
            log.info(f"✅ Skapade ny spellista '{new_playlist.title}' med {len(unique_tracks_to_add)} låtar.")
        except Exception as e:
            log.error(f"❌ Kunde inte skapa spellista i Plex: {e}")

    log.info(f"🎉 Klar! Processen tog {((time.time()-start_time)/60):.1f} minuter.")

if __name__ == "__main__":
    create_lastfm_recommended_playlist()