import logging

from camps.mixins import CampViewMixin
from django.conf import settings
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.shortcuts import redirect
from django.urls import reverse_lazy
from django.views.generic import DetailView, ListView
from django.views.generic.edit import UpdateView

from ..models import Team, TeamMember
from .mixins import EnsureTeamResponsibleMixin

logger = logging.getLogger("bornhack.%s" % __name__)


class TeamListView(CampViewMixin, ListView):
    template_name = "team_list.html"
    model = Team
    context_object_name = "teams"

    def get_queryset(self, *args, **kwargs):
        qs = super().get_queryset(*args, **kwargs)
        qs = qs.prefetch_related("members")
        qs = qs.prefetch_related("members__profile")
        # FIXME: there is more to be gained here but the templatetag we use to see if
        # the logged-in user is a member of the current team does not benefit from the prefetching,
        # also the getting of team responsible members and their profiles do not use the prefetching
        # :( /tyk
        return qs

    def get_context_data(self, *, object_list=None, **kwargs):
        context = super().get_context_data(object_list=object_list, **kwargs)
        if self.request.user.is_authenticated:
            context["user_teams"] = self.request.user.teammember_set.filter(
                team__camp=self.camp
            )
        return context


class TeamGeneralView(CampViewMixin, DetailView):
    template_name = "team_general.html"
    context_object_name = "team"
    model = Team
    slug_url_kwarg = "team_slug"
    active_menu = "general"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["IRCBOT_SERVER_HOSTNAME"] = settings.IRCBOT_SERVER_HOSTNAME
        context["IRCBOT_PUBLIC_CHANNEL"] = settings.IRCBOT_PUBLIC_CHANNEL
        return context


class TeamManageView(CampViewMixin, EnsureTeamResponsibleMixin, UpdateView):
    model = Team
    template_name = "team_manage.html"
    fields = [
        "description",
        "needs_members",
        "public_irc_channel_name",
        "public_irc_channel_bot",
        "public_irc_channel_managed",
        "private_irc_channel_name",
        "private_irc_channel_bot",
        "private_irc_channel_managed",
        "guide",
    ]
    slug_url_kwarg = "team_slug"

    def get_success_url(self):
        return reverse_lazy(
            "teams:general",
            kwargs={"camp_slug": self.camp.slug, "team_slug": self.get_object().slug},
        )

    def form_valid(self, form):
        messages.success(self.request, "Team has been saved")
        return super().form_valid(form)


class FixIrcAclView(LoginRequiredMixin, CampViewMixin, UpdateView):
    template_name = "fix_irc_acl.html"
    model = Team
    fields = []
    slug_url_kwarg = "team_slug"

    def dispatch(self, request, *args, **kwargs):
        # we need to call the super().dispatch() method early so self.camp gets populated by CampViewMixin,
        # because the lookups below depend on self.camp being set :)
        response = super().dispatch(request, *args, **kwargs)

        # check if the logged in user has an approved membership of this team
        if request.user not in self.get_object().approved_members.all():
            messages.error(request, "No thanks")
            return redirect(
                "teams:general",
                camp_slug=self.get_object().camp.slug,
                team_slug=self.get_object().slug,
            )

        # check if we manage the channel for this team
        if (
            not self.get_object().irc_channel
            or not self.get_object().irc_channel_managed
        ):
            messages.error(
                request,
                "IRC functionality is disabled for this team, or the team channel is not managed by the bot",
            )
            return redirect(
                "teams:general",
                camp_slug=self.get_object().camp.slug,
                team_slug=self.get_object().slug,
            )

        # check if user has a nickserv username
        if not request.user.profile.nickserv_username:
            messages.error(
                request,
                "Please go to your profile and set your NickServ username first. Make sure the account is registered with NickServ first!",
            )
            return redirect(
                "teams:general",
                camp_slug=self.get_object().camp.slug,
                team_slug=self.get_object().slug,
            )

        return response

    def get(self, request, *args, **kwargs):
        # get membership
        try:
            TeamMember.objects.get(
                user=request.user,
                team=self.get_object(),
                approved=True,
                irc_channel_acl_ok=True,
            )
        except TeamMember.DoesNotExist:
            # this membership is already marked as membership.irc_channel_acl_ok=False, no need to do anything
            messages.error(
                request,
                "No need, this membership is already marked as irc_channel_acl_ok=False, so the bot will fix the ACL soon",
            )
            return redirect(
                "teams:general",
                camp_slug=self.get_object().camp.slug,
                team_slug=self.get_object().slug,
            )

        return super().get(request, *args, **kwargs)

    def form_valid(self, form):
        membership = TeamMember.objects.get(
            user=self.request.user,
            team=self.get_object(),
            approved=True,
            irc_channel_acl_ok=True,
        )

        membership.irc_channel_acl_ok = False
        membership.save()
        messages.success(
            self.request,
            "OK, hang on while we fix the permissions for your NickServ user '%s' for IRC channel '%s'"
            % (
                self.request.user.profile.nickserv_username,
                form.instance.irc_channel_name,
            ),
        )
        return redirect(
            "teams:general",
            camp_slug=form.instance.camp.slug,
            team_slug=form.instance.slug,
        )