# coding=utf-8

import json
from rest_framework import serializers
from apps.tenant.employee.models import Employee

from utils.exceptions import CustomError
from apps.account.models import User


class EmployeeSerializer(serializers.ModelSerializer):
    gender_text = serializers.CharField(source='get_gender_display', read_only=True)
    status_text = serializers.CharField(source='get_status_display', read_only=True)
    create_time = serializers.DateTimeField(source='user.date_joined', read_only=True)
    username = serializers.CharField(source='user.username', read_only=True)
    position_text = serializers.CharField(source='position.name', read_only=True)
    area_text = serializers.SerializerMethodField()
    department_text = serializers.CharField(source='department.name', read_only=True)
    area = serializers.SerializerMethodField()
    group_ids = serializers.PrimaryKeyRelatedField(source='user.groups', many=True, read_only=True)
    groups = serializers.SerializerMethodField()
    forbid_baoxiu_text = serializers.SerializerMethodField()
    type_text = serializers.CharField(source='get_type_display', read_only=True)

    def get_area_text(self, obj):
        if obj.department:
            return obj.department.area.name
        return ''

    def get_area(self, obj):
        if obj.department:
            return obj.department.area.id
        return ''

    def get_forbid_baoxiu_text(self, obj):
        if obj.forbid_baoxiu:
            return u'是'
        return u'否'

    def get_groups(self, obj):
        return ','.join(obj.user.groups.values_list('display_name', flat=True))

    class Meta:
        model = Employee
        fields = '__all__'

    def create(self, validated_data):
        username = self.initial_data['tel']
        # 判断用户是否已经注册登陆过
        password = None
        if self.initial_data['password']:
            password = self.initial_data['password']
        user = User.objects.filter(username=username).first()
        if not user:
            # 创建user实例
            is_active = 1 if self.initial_data['status'] != '4' else 0
            user = User.objects.create_tenant(username, password, is_active=is_active)

        validated_data['user'] = user
        validated_data['create_user'] = self.context['request'].user
        validated_data['tenant'] = self.context['request'].user.employee.tenant
        validated_data['type'] = Employee.EMPLOYEE
        try:
            instance = super(EmployeeSerializer, self).create(validated_data)
        except Exception as e:
            if e.args[0] == 1062:
                raise CustomError(u'该手机号已被游客或者其他员工使用，请检查！')

        groups = self.context['request'].data.get('groups', None)
        if groups:
            groups = json.loads(groups)
        else:
            groups = []
        for group in groups:
            instance.user.groups.add(group)
        return instance

    def update(self, instance, validated_data):
        instance.user.groups.clear()
        groups = self.context['request'].data.get('groups', None)
        if groups:
            groups = json.loads(groups)
        else:
            groups = []
        for group in groups:
            instance.user.groups.add(group)
        if instance.tenant != self.context['request'].user.employee.tenant:
            raise CustomError(u'禁止跨租户操作！')
        username = self.initial_data['tel']
        if username and self.initial_data['password'].strip() != '':
            if instance.user:
                user = {
                    'username': username,
                    'password': self.initial_data['password'],
                    'is_active': 1 if self.initial_data['status'] != '4' else 0,
                    'type':2,
                }
                instance.user.update_item(user)
            else:
                is_active = 1 if self.initial_data['status'] != '4' else 0
                user = User.objects.create_tenant(username,
                                                  self.initial_data['password'],
                                                  is_active=is_active)
                validated_data['user'] = user
        instance = super(EmployeeSerializer, self).update(instance, validated_data)
        return instance