from django.contrib.auth.models import User

from symposion.schedule.models import Schedule, Day, Slot, Presentation, Session, SessionRole

def session_list(request):

    sessions = Session.objects.all().order_by('pk')

    return render(request, "schedule/session_list.html", {

        "sessions": sessions,

    })

@login_required

def session_staff_email(request):

    if not request.user.is_staff:

        return redirect("schedule_session_list")

    data = "\n".join(user.email for user in User.objects.filter(sessionrole__isnull=False).distinct())

    return HttpResponse(data, content_type="text/plain;charset=UTF-8")

def session_detail(request, session_id):

    session = get_object_or_404(Session, id=session_id)

    chair = None

    chair_denied = False

    chairs = SessionRole.objects.filter(session=session, role=SessionRole.SESSION_ROLE_CHAIR).exclude(status=False)

    if chairs:

        chair = chairs[0].user

    else:

        if request.user.is_authenticated():

            # did the current user previously try to apply and got rejected?

            if SessionRole.objects.filter(session=session, user=request.user, role=SessionRole.SESSION_ROLE_CHAIR, status=False):

                chair_denied = True

    runner = None

    runner_denied = False

    runners = SessionRole.objects.filter(session=session, role=SessionRole.SESSION_ROLE_RUNNER).exclude(status=False)

    if runners:

        runner = runners[0].user

    else:

        if request.user.is_authenticated():

            # did the current user previously try to apply and got rejected?

            if SessionRole.objects.filter(session=session, user=request.user, role=SessionRole.SESSION_ROLE_RUNNER, status=False):

                runner_denied = True

    if request.method == "POST" and request.user.is_authenticated():

        if not hasattr(request.user, "profile") or not request.user.profile.is_complete:

            response = redirect("profile_edit")

            response["Location"] += "?next=%s" % request.path

            return response

        role = request.POST.get("role")

        if role == "chair":

            if chair is None and not chair_denied:

                SessionRole(session=session, role=SessionRole.SESSION_ROLE_CHAIR, user=request.user).save()

        elif role == "runner":

            if runner is None and not runner_denied:

                SessionRole(session=session, role=SessionRole.SESSION_ROLE_RUNNER, user=request.user).save()

        elif role == "un-chair":

            if chair == request.user:

                session_role = SessionRole.objects.filter(session=session, role=SessionRole.SESSION_ROLE_CHAIR, user=request.user)

                if session_role:

                    session_role[0].delete()

        elif role == "un-runner":

            if runner == request.user:

                session_role = SessionRole.objects.filter(session=session, role=SessionRole.SESSION_ROLE_RUNNER, user=request.user)

                if session_role:

                    session_role[0].delete()

        return redirect("schedule_session_detail", session_id)

    return render(request, "schedule/session_detail.html", {

        "session": session,

        "chair": chair,

        "chair_denied": chair_denied,

        "runner": runner,

        "runner_denied": runner_denied,

    })