import os

from django.shortcuts import render

import neboard
from boards.authors import authors
from boards.utils import cached_result
from boards.views.base import BaseBoardView
from boards.models import Post


PARAM_AUTHORS = 'authors'
PARAM_MEDIA_SIZE = 'media_size'
PARAM_POST_COUNT = 'post_count'


class AuthorsView(BaseBoardView):

    def get(self, request):
        params = dict()
        params[PARAM_AUTHORS] = authors
        params[PARAM_MEDIA_SIZE] = self._get_directory_size(neboard.settings.MEDIA_ROOT)
        params[PARAM_POST_COUNT] = Post.objects.count()

        return render(request, 'boards/authors.html', params)

    @cached_result()
    def _get_directory_size(self, directory):
        total_size = 0
        for dirpath, dirnames, filenames in os.walk(directory):
            for f in filenames:
                fp = os.path.join(dirpath, f)
                total_size += os.path.getsize(fp)
        return total_size