import logging

from django.urls import reverse_lazy
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import ensure_csrf_cookie
from django.views.generic import ListView, DetailView, CreateView, DeleteView, UpdateView
from guardian.decorators import permission_required_or_403
from guardian.shortcuts import assign_perm

from config import models, forms

logger = logging.getLogger(__name__)



@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.add_restream'),
                  name='dispatch')
@method_decorator(ensure_csrf_cookie, name='dispatch')
class TranscodingProfileList(ListView):
    model = models.TranscodingProfile


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.view_transcodingprofile',
                  (models.TranscodingProfile, 'pk', 'pk')),
                  name='dispatch')
class TranscodingProfileDetail(DetailView):
    model = models.TranscodingProfile


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.change_transcodingprofile',
                  (models.TranscodingProfile, 'pk', 'pk')),
                  name='dispatch')
class TranscodingProfileUpdate(UpdateView):
    model = models.TranscodingProfile
    template_name_suffix = '_update_form'

    fields = [
        'name',
        'video_map_stream',
        'video_codec',
        'video_bitrate',
        'video_frame_rate',
        'video_resolution',
        'video_gop_size',
        'video_pixel_format',
        'audio_map_stream',
        'audio_codec',
        'audio_bitrate',
        'audio_sample_rate',
        'audio_channels',

    ]


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.add_transcodingprofile'),
                  name='dispatch')
class TranscodingProfileCreate(CreateView):
    model = models.TranscodingProfile

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs

    def form_valid(self, form):
        valid = super().form_valid(form)
        if valid:
            user = self.request.user
            assign_perm('view_transcodingprofile', user, self.object)
            assign_perm('change_transcodingprofile', user, self.object)
            assign_perm('delete_transcodingprofile', user, self.object)
        return valid


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.delete_transcodingprofile',
                  (models.TranscodingProfile, 'pk', 'pk')),
                  name='dispatch')
class TranscodingProfileDelete(DeleteView):
    model = models.TranscodingProfile
    success_url = reverse_lazy('config:transcodingprofile_list')