# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.contrib import messages
from django.contrib.auth.mixins import PermissionRequiredMixin
from django.contrib.messages.views import SuccessMessageMixin
from django.urls import reverse, reverse_lazy
from django.utils import timezone
from django.views.generic.base import RedirectView
from django.views.generic.detail import DetailView
from django.views.generic.edit import CreateView, UpdateView, DeleteView

from django_filters.views import FilterView

from core import forms, models, timeline


class CoreAddView(PermissionRequiredMixin, SuccessMessageMixin, CreateView):
    def get_success_message(self, cleaned_data):
        cleaned_data['model'] = self.model._meta.verbose_name.title()
        if 'child' in cleaned_data:
            self.success_message = '%(model)s entry for %(child)s added!'
        else:
            self.success_message = '%(model)s entry added!'
        return self.success_message % cleaned_data


class CoreUpdateView(PermissionRequiredMixin, SuccessMessageMixin, UpdateView):
    def get_success_message(self, cleaned_data):
        cleaned_data['model'] = self.model._meta.verbose_name.title()
        if 'child' in cleaned_data:
            self.success_message = '%(model)s entry for %(child)s updated.'
        else:
            self.success_message = '%(model)s entry updated.'
        return self.success_message % cleaned_data


class CoreDeleteView(PermissionRequiredMixin, DeleteView):
    """
    SuccessMessageMixin is not compatible DeleteView.
    See: https://code.djangoproject.com/ticket/21936
    """
    def delete(self, request, *args, **kwargs):
        success_message = '{} entry deleted.'.format(
            self.model._meta.verbose_name.title())
        messages.success(request, success_message)
        return super(CoreDeleteView, self).delete(request, *args, **kwargs)


class ChildList(PermissionRequiredMixin, FilterView):
    model = models.Child
    template_name = 'core/child_list.html'
    permission_required = ('core.view_child',)
    paginate_by = 10
    filter_fields = ('first_name', 'last_name')


class ChildAdd(CoreAddView):
    model = models.Child
    permission_required = ('core.add_child',)
    form_class = forms.ChildForm
    success_url = reverse_lazy('core:child-list')
    success_message = '%(first_name)s %(last_name)s added!'


class ChildDetail(PermissionRequiredMixin, DetailView):
    model = models.Child
    permission_required = ('core.view_child',)

    def get_context_data(self, **kwargs):
        context = super(ChildDetail, self).get_context_data(**kwargs)
        date = self.request.GET.get('date', str(timezone.localdate()))
        date = timezone.datetime.strptime(date, '%Y-%m-%d')
        date = timezone.localtime(timezone.make_aware(date))
        context['timeline_objects'] = timeline.get_objects(self.object, date)
        context['date'] = date
        context['date_previous'] = date - timezone.timedelta(days=1)
        if date.date() < timezone.localdate():
            context['date_next'] = date + timezone.timedelta(days=1)
        return context


class ChildUpdate(CoreUpdateView):
    model = models.Child
    permission_required = ('core.change_child',)
    form_class = forms.ChildForm
    success_url = reverse_lazy('core:child-list')


class ChildDelete(CoreUpdateView):
    model = models.Child
    form_class = forms.ChildDeleteForm
    template_name = 'core/child_confirm_delete.html'
    permission_required = ('core.delete_child',)
    success_url = reverse_lazy('core:child-list')


class DiaperChangeList(PermissionRequiredMixin, FilterView):
    model = models.DiaperChange
    template_name = 'core/diaperchange_list.html'
    permission_required = ('core.view_diaperchange',)
    paginate_by = 10
    filter_fields = ('child', 'wet', 'solid', 'color')


class DiaperChangeAdd(CoreAddView):
    model = models.DiaperChange
    permission_required = ('core.add_diaperchange',)
    form_class = forms.DiaperChangeForm
    success_url = reverse_lazy('core:diaperchange-list')


class DiaperChangeUpdate(CoreUpdateView):
    model = models.DiaperChange
    permission_required = ('core.change_diaperchange',)
    form_class = forms.DiaperChangeForm
    success_url = reverse_lazy('core:diaperchange-list')


class DiaperChangeDelete(CoreDeleteView):
    model = models.DiaperChange
    permission_required = ('core.delete_diaperchange',)
    success_url = reverse_lazy('core:diaperchange-list')


class FeedingList(PermissionRequiredMixin, FilterView):
    model = models.Feeding
    template_name = 'core/feeding_list.html'
    permission_required = ('core.view_feeding',)
    paginate_by = 10
    filter_fields = ('child', 'type', 'method')


class FeedingAdd(CoreAddView):
    model = models.Feeding
    permission_required = ('core.add_feeding',)
    form_class = forms.FeedingForm
    success_url = reverse_lazy('core:feeding-list')

    def get_form_kwargs(self):
        kwargs = super(FeedingAdd, self).get_form_kwargs()
        # Add timer to be used by FeedingForm.__init__
        kwargs.update({'timer': self.request.GET.get('timer', None)})
        return kwargs


class FeedingUpdate(CoreUpdateView):
    model = models.Feeding
    permission_required = ('core.change_feeding',)
    form_class = forms.FeedingForm
    success_url = reverse_lazy('core:feeding-list')


class FeedingDelete(CoreDeleteView):
    model = models.Feeding
    permission_required = ('core.delete_feeding',)
    success_url = reverse_lazy('core:feeding-list')


class NoteList(PermissionRequiredMixin, FilterView):
    model = models.Note
    template_name = 'core/note_list.html'
    permission_required = ('core.view_note',)
    paginate_by = 10
    filter_fields = ('child',)


class NoteAdd(CoreAddView):
    model = models.Note
    permission_required = ('core.add_note',)
    form_class = forms.NoteForm
    success_url = reverse_lazy('core:note-list')


class NoteUpdate(CoreUpdateView):
    model = models.Note
    permission_required = ('core.change_note',)
    fields = ['child', 'note']
    success_url = reverse_lazy('core:note-list')


class NoteDelete(CoreDeleteView):
    model = models.Note
    permission_required = ('core.delete_note',)
    success_url = reverse_lazy('core:note-list')


class SleepList(PermissionRequiredMixin, FilterView):
    model = models.Sleep
    template_name = 'core/sleep_list.html'
    permission_required = ('core.view_sleep',)
    paginate_by = 10
    filter_fields = ('child',)


class SleepAdd(CoreAddView):
    model = models.Sleep
    permission_required = ('core.add_sleep',)
    form_class = forms.SleepForm
    success_url = reverse_lazy('core:sleep-list')

    def get_form_kwargs(self):
        kwargs = super(SleepAdd, self).get_form_kwargs()
        # Add timer to be used by SleepForm.__init__
        kwargs.update({'timer': self.request.GET.get('timer', None)})
        return kwargs


class SleepUpdate(CoreUpdateView):
    model = models.Sleep
    permission_required = ('core.change_sleep',)
    form_class = forms.SleepForm
    success_url = reverse_lazy('core:sleep-list')


class SleepDelete(CoreDeleteView):
    model = models.Sleep
    permission_required = ('core.delete_sleep',)
    success_url = reverse_lazy('core:sleep-list')


class TimerList(PermissionRequiredMixin, FilterView):
    model = models.Timer
    template_name = 'core/timer_list.html'
    permission_required = ('core.view_timer',)
    paginate_by = 10
    filter_fields = ('active', 'user')


class TimerDetail(PermissionRequiredMixin, DetailView):
    model = models.Timer
    permission_required = ('core.view_timer',)


class TimerAdd(CoreAddView):
    model = models.Timer
    permission_required = ('core.add_timer',)
    form_class = forms.TimerForm

    def get_form_kwargs(self):
        kwargs = super(TimerAdd, self).get_form_kwargs()
        kwargs.update({'user': self.request.user})
        return kwargs

    def get_success_url(self):
        return reverse('core:timer-detail', kwargs={'pk': self.object.pk})


class TimerUpdate(CoreUpdateView):
    model = models.Timer
    permission_required = ('core.change_timer',)
    form_class = forms.TimerForm
    success_url = reverse_lazy('core:timer-list')

    def get_form_kwargs(self):
        kwargs = super(TimerUpdate, self).get_form_kwargs()
        kwargs.update({'user': self.request.user})
        return kwargs

    def get_success_url(self):
        instance = self.get_object()
        return reverse('core:timer-detail', kwargs={'pk': instance.pk})


class TimerAddQuick(PermissionRequiredMixin, RedirectView):
    permission_required = ('core.add_timer',)

    def get(self, request, *args, **kwargs):
        instance = models.Timer.objects.create(user=request.user)
        instance.save()
        messages.success(request, '{} started!'.format(instance))
        self.url = request.GET.get(
            'next', reverse('core:timer-detail', args={instance.id}))
        return super(TimerAddQuick, self).get(request, *args, **kwargs)


class TimerRestart(PermissionRequiredMixin, RedirectView):
    permission_required = ('core.change_timer',)

    def get(self, request, *args, **kwargs):
        instance = models.Timer.objects.get(id=kwargs['pk'])
        instance.restart()
        messages.success(request, '{} restarted.'.format(instance))
        return super(TimerRestart, self).get(request, *args, **kwargs)

    def get_redirect_url(self, *args, **kwargs):
        return reverse('core:timer-detail', kwargs={'pk': kwargs['pk']})


class TimerStop(PermissionRequiredMixin, SuccessMessageMixin, RedirectView):
    permission_required = ('core.change_timer',)
    success_message = '%(timer)s stopped.'

    def get(self, request, *args, **kwargs):
        instance = models.Timer.objects.get(id=kwargs['pk'])
        instance.stop()
        messages.success(request, '{} stopped.'.format(instance))
        return super(TimerStop, self).get(request, *args, **kwargs)

    def get_redirect_url(self, *args, **kwargs):
        return reverse('core:timer-detail', kwargs={'pk': kwargs['pk']})


class TimerDelete(CoreDeleteView):
    model = models.Timer
    permission_required = ('core.delete_timer',)
    success_url = reverse_lazy('core:timer-list')


class TummyTimeList(PermissionRequiredMixin, FilterView):
    model = models.TummyTime
    template_name = 'core/tummytime_list.html'
    permission_required = ('core.view_tummytime',)
    paginate_by = 10
    filter_fields = ('child',)


class TummyTimeAdd(CoreAddView):
    model = models.TummyTime
    permission_required = ('core.add_tummytime',)
    form_class = forms.TummyTimeForm
    success_url = reverse_lazy('core:tummytime-list')

    def get_form_kwargs(self):
        kwargs = super(TummyTimeAdd, self).get_form_kwargs()
        # Add timer to be used by TummyTimeForm.__init__
        kwargs.update({'timer': self.request.GET.get('timer', None)})
        return kwargs


class TummyTimeUpdate(CoreUpdateView):
    model = models.TummyTime
    permission_required = ('core.change_tummytime',)
    form_class = forms.TummyTimeForm
    success_url = reverse_lazy('core:tummytime-list')


class TummyTimeDelete(CoreDeleteView):
    model = models.TummyTime
    permission_required = ('core.delete_tummytime',)
    success_url = reverse_lazy('core:tummytime-list')


class WeightList(PermissionRequiredMixin, FilterView):
    model = models.Weight
    template_name = 'core/weight_list.html'
    permission_required = ('core.view_weight',)
    paginate_by = 10
    filter_fields = ('child',)


class WeightAdd(CoreAddView):
    model = models.Weight
    permission_required = ('core.add_weight',)
    form_class = forms.WeightForm
    success_url = reverse_lazy('core:weight-list')


class WeightUpdate(CoreUpdateView):
    model = models.Weight
    permission_required = ('core.change_weight',)
    fields = ['child', 'weight', 'date']
    success_url = reverse_lazy('core:weight-list')


class WeightDelete(CoreDeleteView):
    model = models.Weight
    permission_required = ('core.delete_weight',)
    success_url = reverse_lazy('core:weight-list')