"""Present karma data."""
import logging

from django.conf import settings
from django.core.exceptions import PermissionDenied
from django.shortcuts import get_object_or_404, render
from rest_framework import viewsets

from karma.models import KarmaKey
from karma.serializers import KarmaKeySerializer

log = logging.getLogger(__name__)


def index(request):
    """Display all karma keys."""
    if 'karma' not in settings.WEB_ENABLED_APPS:
        raise PermissionDenied()

    entries = KarmaKey.objects.all().order_by('key')
    return render(request, 'karma/index.html', {'entries': entries})


def key_detail(request, karma_key):
    """Display the requested karma key."""
    if 'karma' not in settings.WEB_ENABLED_APPS:
        raise PermissionDenied()

    entry = get_object_or_404(KarmaKey, key=karma_key.lower())
    return render(request, 'karma/karma_key.html', {'entry': entry, 'entry_history': entry.history(mode='date')})


class KarmaKeyViewSet(viewsets.ReadOnlyModelViewSet):
    """Provide list and detail actions for karma keys."""

    queryset = KarmaKey.objects.all()
    serializer_class = KarmaKeySerializer