from __future__ import absolute_import

from django.contrib import admin
from django.contrib.admin.models import DELETION
from django.contrib.auth.models import Permission
from django.core.urlresolvers import reverse
from django.utils.html import escape

    search_fields = ['name', 'codename']

class AdminAdmin(admin.ModelAdmin):

    def permission_groups(self):
        perm_groups = ', '.join(
            [perm.name for perm in self.user.groups.all()]) if self.user.groups.all() else 'No permission groups'
        return u'<a href="/account/register/?id={id}">{groups}</a>'.format(id=self.user._id, groups=perm_groups)

    def user_name(self):
        return self.user.username

    def _id(self):
        return self.user._id

    permission_groups.allow_tags = True
    permission_groups.short_description = 'Permission Groups'

    list_display = [user_name, _id, permission_groups]


admin.site.register(Permission, PermissionAdmin)
admin.site.register(AdminProfile, AdminAdmin)


class LogEntryAdmin(admin.ModelAdmin):

    date_hierarchy = 'action_time'

    readonly_fields = [f.name for f in AdminLogEntry._meta.get_fields()]

    list_filter = [
        'user',
        'action_flag'
    ]

    search_fields = [
        'object_repr',
        'change_message'
    ]

    list_display = [
        'action_time',
        'user',
        'object_link',
        'object_id',
        'message',
    ]

    def has_add_permission(self, request):
        return False

    def has_change_permission(self, request, obj=None):
        return request.user.is_superuser and request.method != 'POST'

    def has_delete_permission(self, request, obj=None):
        return False

    def object_link(self, obj):
        if obj.action_flag == DELETION:
            link = escape(obj.object_repr)
        elif obj.content_type is None:
            link = escape(obj.object_repr)
        else:
            ct = obj.content_type
            link = u'<a href="%s">%s</a>' % (
                reverse('admin:%s_%s_change' % (ct.app_label, ct.model), args=[obj.object_id]),
                escape(obj.object_repr),
            )
        return link
    object_link.allow_tags = True
    object_link.admin_order_field = 'object_repr'
    object_link.short_description = u'object'

    def queryset(self, request):
        return super(LogEntryAdmin, self).queryset(request) \
            .prefetch_related('content_type')


# admin.site.register(AdminLogEntry, LogEntryAdmin)
from osf.models import AdminLogEntry
from osf.models import AdminProfile


class PermissionAdmin(admin.ModelAdmin):