"""Admin settings"""

from itertools import chain

from django.conf import settings
from django.contrib import admin
from social_core.utils import setting_name

from .models import Association, Nonce, UserSocialAuth


@admin.register(UserSocialAuth)
class UserSocialAuthOption(admin.ModelAdmin):
    """Social Auth user options"""

    list_display = ("user", "id", "provider", "uid", "created", "modified")
    list_filter = ("provider",)
    raw_id_fields = ("user",)
    readonly_fields = ("created", "modified")
    list_select_related = True

    def get_search_fields(self, request=None):
        search_fields = getattr(
            settings, setting_name("ADMIN_USER_SEARCH_FIELDS"), None
        )
        if search_fields is None:
            _User = UserSocialAuth.user_model()
            username = (
                getattr(_User, "USERNAME_FIELD", None)
                or hasattr(_User, "username")
                and "username"
                or None
            )
            fieldnames = ("first_name", "last_name", "email", username)
            all_names = self._get_all_field_names(_User._meta)
            search_fields = [name for name in fieldnames if name and name in all_names]
        return ["user__" + name for name in search_fields] + getattr(
            settings, setting_name("ADMIN_SEARCH_FIELDS"), []
        )

    @staticmethod
    def _get_all_field_names(model):
        names = chain.from_iterable(
            (field.name, field.attname) if hasattr(field, "attname") else (field.name,)
            for field in model.get_fields()
            # For complete backwards compatibility, you may want to exclude
            # GenericForeignKey from the results.
            if not (field.many_to_one and field.related_model is None)
        )
        return list(set(names))


@admin.register(Nonce)
class NonceOption(admin.ModelAdmin):
    """Nonce options"""

    list_display = ("id", "server_url", "timestamp", "salt")
    search_fields = ("server_url",)


@admin.register(Association)
class AssociationOption(admin.ModelAdmin):
    """Association options"""

    list_display = ("id", "server_url", "assoc_type")
    list_filter = ("assoc_type",)
    search_fields = ("server_url",)