from django.shortcuts import get_object_or_404

from boards.abstracts.settingsmanager import get_settings_manager
from boards.models import Tag, Thread
from boards.views.all_threads import AllThreadsView, DEFAULT_PAGE
from boards.views.mixins import DispatcherMixin, RedirectNextMixin
from boards.forms import ThreadForm, PlainErrorList

PARAM_HIDDEN_TAGS = 'hidden_tags'
PARAM_FAV_TAGS = 'fav_tags'
PARAM_TAG = 'tag'

__author__ = 'neko259'


class TagView(AllThreadsView, DispatcherMixin, RedirectNextMixin):

    tag_name = None

    def get_threads(self):
        tag = get_object_or_404(Tag, name=self.tag_name)

        return tag.get_threads()

    def get_context_data(self, **kwargs):
        params = super(TagView, self).get_context_data(**kwargs)

        settings_manager = get_settings_manager(kwargs['request'])

        tag = get_object_or_404(Tag, name=self.tag_name)
        params[PARAM_TAG] = tag

        params[PARAM_FAV_TAGS] = settings_manager.get_fav_tags()
        params[PARAM_HIDDEN_TAGS] = settings_manager.get_hidden_tags()

        return params

    def get(self, request, tag_name, page=DEFAULT_PAGE, form=None):
        self.tag_name = tag_name

        dispatch_result = self.dispatch_method(request)
        if dispatch_result:
            return dispatch_result
        else:
            return super(TagView, self).get(request, page, form)

    def post(self, request, tag_name, page=DEFAULT_PAGE):
        form = ThreadForm(request.POST, request.FILES,
                          error_class=PlainErrorList)
        form.session = request.session

        if form.is_valid():
            return self.create_thread(request, form)
        if form.need_to_ban:
            # Ban user because he is suspected to be a bot
            self._ban_current_user(request)

        return self.get(request, tag_name, page, form)

    def subscribe(self, request):
        tag = get_object_or_404(Tag, name=self.tag_name)

        settings_manager = get_settings_manager(request)
        settings_manager.add_fav_tag(tag)

        return self.redirect_to_next(request)

    def unsubscribe(self, request):
        tag = get_object_or_404(Tag, name=self.tag_name)

        settings_manager = get_settings_manager(request)
        settings_manager.del_fav_tag(tag)

        return self.redirect_to_next(request)

    def hide(self, request):
        """
        Adds tag to user's hidden tags. Threads with this tag will not be
        shown.
        """

        tag = get_object_or_404(Tag, name=self.tag_name)

        settings_manager = get_settings_manager(request)
        settings_manager.add_hidden_tag(tag)

    def unhide(self, request):
        """
        Removed tag from user's hidden tags.
        """

        tag = get_object_or_404(Tag, name=self.tag_name)

        settings_manager = get_settings_manager(request)
        settings_manager.del_hidden_tag(tag)