import os.path
import time

from django.contrib import messages
from django.db.models import Max,Count
from django.shortcuts import render,redirect,reverse
from django.views.generic import View,ListView,DetailView


from.forms import RegisterForm,LoginForm,CommentForm
from.models import User, Movie, Movie_rating, Movie_hot

BASE=os.path.dirname(os.path.abspath(__file__))


class IndexView(ListView):
    model=Movie
    template_name='movie/index.html'
    paginatee_by=15
    context_objject_name='movies'
    ordering='imdb_id'
    page_kwarg='p'


    def get_queryset(self):
        return Movie.object.filter(imdb_id__lte=1000)


    def get_context_data(self,*,object_list=None,**kwargs):
        context=super(IndexView,self).get_context_data(*kwargs)
        paginator=context.get('paginator')
        page_obj=context.get('page_obj')
        pagination_data=self.get_pagination_data(paginator,page_obj)
        context.updata(pagination_data)
        return context


    def get_pagination_data(self,paginator,page_obj,around_count=2):
        current_page=page_obj.number
        if current_page<=around_count+2:
            left_pages=range(1,current_page)
            left_has_more=False
        else:
            left_pages=range(current_page-around_count,current_page)
            left_has_more=True


        if current_page>=paginator.num_pages-around_count-1:
            right_pages=range(current_page+1,paginator.num_pages+1)
            right_has_more=False
        else:
            right_pages=range(current_page+1,current_page+around_count+1)
            right_has_more=True
        return{
            'left_pages':left_pages,
            'right_pages':right_pages,
            'current_page':current_page,
            'left_has__more':left_has_more,
            'right_has__more':right_has_more
        }



class PopularMovieView(ListView):
    model=Movie_hot
    template_name='movie/hot.html'
    paginate_by=15
    context_object_name='movies'
    page_kwarg='p'


    def get_queryset(self):
        movies=Movie.objects.annotate(nums=Count('movie_rating__score')).order_by('-nums')[:100]
        for movie in movies:
            record=Movie_hot(movie=movie,rating_number=movie.nums)
            record.save()


        hot_movies=Movie_hot.objects.all().values("movie_id")
        movies=Movie.objects.filter(id__in=hot_movies).ammotate(nums=Max('movie_hot__num')).order_by('-nums')
        return movies


    def get_context_data(self,*,object_list=None,**kwargs):
        context=super(PopularMovieView,self).get_context_data(*kwargs)
        paginator=context.get('paginator')
        page_obj=context.get('page_obj')
        pagination_data=self.get_pagination_data(paginator,page_obj)
        context.updata(pagination_data)
        return context


    def get_pagination_data(self,paginator,page_obj,around_count=2):
        current_page=page_obj.number