import nested_admin

from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.models import User
from django.forms.models import modelform_factory

from .models import (
    Association, Profile, Club, Event, Location,
    EventOption, EventCommentField, EventOptionChoice
)


# ---
# The user related stuff
# ---

class ProfileInline(admin.StackedInline):
    model = Profile
    inline_classes = ["collapse open"]


class UserProfileAdmin(UserAdmin):
    inlines = [
        ProfileInline,
    ]

admin.site.unregister(User)
admin.site.register(User, UserProfileAdmin)


# ---
# Clubs
# ---

class ClubUserInline(admin.TabularInline):
    model = Club.members.through


@admin.register(Club)
class ClubAdmin(admin.ModelAdmin):
    inlines = [
        ClubUserInline,
    ]
    exclude = ('members',)


# ---
# Events
# ---

class EventOptionChoiceInline(nested_admin.NestedTabularInline):
    model = EventOptionChoice
    extra = 1


class EventOptionInline(nested_admin.NestedTabularInline):
    model = EventOption
    extra = 1
    inlines = [EventOptionChoiceInline]


class EventCommentFieldInline(nested_admin.NestedTabularInline):
    model = EventCommentField
    extra = 1


@admin.register(Event)
class EventAdmin(nested_admin.NestedModelAdmin):
    search_fields = ['title', 'location', 'description']
    inlines = [
        EventOptionInline,
        EventCommentFieldInline,
    ]

    def get_queryset(self, request):
        """Restrict the event you can edit"""
        qs = super().get_queryset(request)
        if request.user.is_superuser:
            return qs
        else:
            assocs = Association.objects.filter(staff_group__user=request.user)
            return qs.filter(associations__in=assocs)

    def get_form(self, request, obj=None, **kwargs):
        """Restrict the applications you can attach to an event"""
        if request.user.is_superuser:
            return super().get_form(request, obj, **kwargs)
        else:
            assocs = Association.objects.filter(staff_group__user=request.user)

            def formfield_callback(f, **kwargs):
                if f.name == "associations":
                    kwargs["queryset"] = assocs
                return f.formfield(**kwargs)

            return modelform_factory(
                Event,
                exclude=[],
                formfield_callback=formfield_callback
            )


admin.site.register(Location)