from datetime import timedelta

from django.conf import settings
from django.db.models import Count, Q
from django.shortcuts import render
from django.utils import timezone

from queues.models import PlaylistSong
from songs.models import Song


def stats(request):
    total_uploads = Song.objects.filter(deleted=False).exclude(user_id=None).count()

    upload_stats = Song.objects.filter(deleted=False).exclude(user_id=None).values('user__name').annotate(
        total=Count('id')).order_by('-total', 'user__name')[:settings.STATS_TOP_COUNT]

    total_requests = PlaylistSong.objects.filter(state=2).exclude(
        Q(user_id=None) | Q(user_id__in=settings.STATS_REQUEST_IGNORE_USER_IDS)).count()

    request_stats = PlaylistSong.objects.filter(state=2).exclude(
        Q(user_id=None) | Q(user_id__in=settings.STATS_REQUEST_IGNORE_USER_IDS)).values('user__name').annotate(
        total=Count('id')).order_by('-total', 'user__name')[:settings.STATS_TOP_COUNT]

    unique_request_stats = PlaylistSong.objects.filter(state=2).exclude(
        Q(user_id=None) | Q(user_id__in=settings.STATS_REQUEST_IGNORE_USER_IDS)).values(
        'user__name', 'user__name').annotate(
        total=Count('song_id', distinct=True), ratio=Count('song_id', distinct=True) / Count('id') * 100).order_by(
        '-total')[:settings.STATS_TOP_COUNT]

    most_played_songs = PlaylistSong.objects.filter(state=2).exclude(
        Q(user_id=None) | Q(user_id__in=settings.STATS_REQUEST_IGNORE_USER_IDS)).values(
        'song__artist', 'song__title').annotate(total=Count('id')).order_by(
        '-total', 'song__artist')[:settings.STATS_TOP_COUNT]

    most_played_songs_14_days = PlaylistSong.objects.filter(
        state=2, played_at__gte=timezone.now() - timedelta(days=14)).exclude(user_id=None).values(
        'song__artist', 'song__title').annotate(total=Count('id')).order_by(
        '-total', 'song__artist')[:settings.STATS_TOP_COUNT]

    return render(request, 'stats/stats.html', {'total_uploads': total_uploads, 'upload_stats': upload_stats,
                                                'total_requests': total_requests, 'request_stats': request_stats,
                                                'unique_request_stats': unique_request_stats,
                                                'most_played_songs': most_played_songs,
                                                'most_played_songs_14_days': most_played_songs_14_days,
                                                'stats_top_count': settings.STATS_TOP_COUNT})