from rest_framework import serializers
from apps.am.models import Access, Area
from apps.hrm.models import Employee
from apps.system.models import Post
from apps.utils.serializers import CustomModelSerializer
from rest_framework.exceptions import ParseError


class AreaSimpleSerializer(CustomModelSerializer):
    class Meta:
        model = Area
        fields = ['id', 'name', 'level', 'cate']


class AreaSerializer(CustomModelSerializer):
    class Meta:
        model = Area
        fields = '__all__'


class AreaCreateUpdateSerializer(CustomModelSerializer):
    class Meta:
        model = Area
        fields = ['name', 'level', 'number', 'visitor_yes', 'remployee_yes', 'employee_yes',
                  'belong_dept', 'count_people_min', 'count_people_max', 'count_people', 'cate']


class AccessCreateSerializer(CustomModelSerializer):
    class Meta:
        model = Access
        fields = ['type', 'area', 'obj_cate', 'post', 'employee']

    def create(self, validated_data):
        post = validated_data.get('post', None)
        dept = validated_data.get('dept', None)
        employee = validated_data.get('employee', None)
        if post:
            validated_data['obj_cate'] = 'post'
            validated_data['employee'] = None
            validated_data['dept'] = None
        elif dept:
            validated_data['obj_cate'] = 'dept'
            validated_data['post'] = None
            validated_data['employee'] = None
        elif employee:
            validated_data['obj_cate'] = 'people'
            validated_data['post'] = None
            validated_data['dept'] = None
        else:
            raise ParseError('请指定岗位或部门或具体人员')
        return super().create(validated_data)


class AccessSerializer(CustomModelSerializer):
    obj_ = serializers.SerializerMethodField()

    class Meta:
        model = Access
        fields = '__all__'

    def get_obj_(self, obj):
        if obj.obj_cate == 'employee':
            ep = Employee.objects.filter(id=obj.obj).first()
            if ep:
                return {'id': ep.id, 'name': ep.name}
        elif obj.obj_cate == 'post':
            pt = Post.objects.filter(id=obj.obj).first()
            if pt:
                return {'id': pt.id, 'name': pt.name}