from django.contrib.auth.models import Group
from rest_framework import serializers
from users.models import *
from django.shortcuts import get_object_or_404
from rest_framework.response import Response
from django.http import Http404
from rest_framework import status
from django_currentuser.middleware import get_current_user, get_current_authenticated_user
from drf_writable_nested import WritableNestedModelSerializer, UniqueFieldsMixin, NestedCreateMixin, NestedUpdateMixin
from rest_framework.validators import UniqueTogetherValidator
from api.serializers.system import EmployeeSerializer


class AddressSerializer(serializers.ModelSerializer):
    class Meta:
        model = Address
        fields = ('pk', 'apartment', 'street', 'city', 'state', 'country',
                  'state', 'country', 'postCode', 'zipCode')


class KYCSerializer(serializers.ModelSerializer):
    class Meta:
        model = KYC
        fields = ('pk', 'relationshipStatus', 'employmentStatus',
                  'mothersMaidenName', 'idType', 'idNumber', 'idIssueDate',
                  'idExpireDate')


class NextOfKinSerializer(serializers.ModelSerializer):
    class Meta:
        model = NextOfKin
        fields = ('pk', 'firstName', 'lastName', 'middleName', 'dateOfBirth',
                  'occupation', 'relationsShip', 'email', 'apartment',
                  'street', 'city', 'state', 'country')


class UserSerializer(WritableNestedModelSerializer):
    # Reverse OneToOne relation
    employee_details = EmployeeSerializer(required=False)
    address = AddressSerializer(required=False)
    kyc = KYCSerializer(required=False)
    nextofkin = NextOfKinSerializer(required=False)

    phone = serializers.CharField(max_length=20)
    customer_details = serializers.PrimaryKeyRelatedField(read_only=True)

    class Meta:
        model = UserModel
        fields = ('pk', 'username', 'email', 'first_name', 'last_name',
                  'other_name', 'gender', 'phone', 'photo_url', 'bio',
                  "uAccountType", "address", "kyc", "nextofkin",
                  "customer_details", "employee_details")
        read_only_fields = ('email', )
        validators = [
            UniqueTogetherValidator(queryset=UserModel.objects.all(),
                                    fields=('phone', ))
        ]


class UserAdminSerializer(WritableNestedModelSerializer):
    # Reverse OneToOne relation
    employee_details = EmployeeSerializer(required=False)
    address = AddressSerializer(required=False)
    kyc = KYCSerializer(required=False)

    phone = serializers.CharField(max_length=20)
    customer_details = serializers.PrimaryKeyRelatedField(read_only=True)

    class Meta:
        model = UserModel
        fields = ('pk', 'username', 'email', 'first_name', 'last_name',
                  'other_name', 'gender', 'phone', 'photo_url', 'bio',
                  "uAccountType", "address", "kyc", "customer_details",
                  "employee_details", 'groups')
        read_only_fields = ('email', )
        validators = [
            UniqueTogetherValidator(queryset=UserModel.objects.all(),
                                    fields=('phone', ))
        ]
        depth = 3


class UserDetailsSerializer(serializers.ModelSerializer):
    phone = serializers.CharField(max_length=20, required=True)

    class Meta:
        model = UserModel
        fields = (
            'pk',
            'username',
            'email',
            'phone',
            'first_name',
            'last_name',
        )
        read_only_fields = ('email', )
        validators = [
            UniqueTogetherValidator(queryset=UserModel.objects.all(),
                                    fields=('phone', ))
        ]


class UserDocumentSerializer(serializers.ModelSerializer):
    owner = serializers.PrimaryKeyRelatedField(read_only=True)

    class Meta:
        model = UserDocument
        fields = ('pk', 'name', 'file_hash', 'purpose', 'url', 'owner')
        depth = 1

    def create(self, validated_data):
        return UserDocument.objects.create(
            owner=get_current_authenticated_user(), **validated_data)


class GroupSerializer(serializers.ModelSerializer):
    class Meta:
        model = Group
        fields = ('id', 'name')