import re
from rest_framework import serializers
from Apps.history import *


def validate_department(value):
    reg = re.compile(r'^[\u4e00-\u9fa5A-Za-z]*$')
    if not reg.match(value):
        raise serializers.ValidationError("42011-部门名称中只能输入汉字或英文")


def validate_department_en(value):
    reg = re.compile(r'^[A-Za-z][A-Za-z\s]*$')
    if not reg.match(value):
        raise serializers.ValidationError("42010-部门英文名称中只能输入英文")


def name_validate(value):
    reg = re.compile(r'^[\u4e00-\u9fa5A-Za-z]*$')
    if not reg.match(value):
        raise serializers.ValidationError("42012-姓名只能输入汉字或英文")

#
# def validate_avatar(value):
#     s = str(value)
#     return s


class DepartmentSerializer(serializers.Serializer):
    did = serializers.IntegerField(required=True, error_messages={"blank": '41010-部门ID不能为空', "invalid": '42020-类型错误'})
    department = serializers.CharField(max_length=10, required=True, trim_whitespace=True,
                                       validators=[validate_department],
                                       error_messages={"max_length": '42021-部门名称长度过长', "blank": '41011-部门名称不能为空'})
    department_en = serializers.CharField(max_length=30, required=True, trim_whitespace=True,
                                          validators=[validate_department_en],
                                          error_messages={"max_length": '42022-部门英文名称长度过长',
                                                          "blank": '41012-部门英文名称不能为空'})
    content = serializers.CharField(max_length=800, required=True, trim_whitespace=True,
                                    error_messages={"max_length": '42023-内容过长', "blank": '41013-内容不能为空'})
    introduction = serializers.CharField(max_length=800, required=True, trim_whitespace=True,
                                         error_messages={"max_length": '42024-介绍内容过长', "blank": '41014-介绍内容不能为空'})

    # class Meta:
    #     model = Department
    #     fields = ('did', 'department_en', 'department', 'part', 'title', 'content')

    def create(self, validated_data):
        return Department.objects.create(**validated_data)

    def update(self, instance, validated_data):
        instance.content = validated_data.get("content", instance.content)
        instance.department = validated_data.get("department", instance.department)
        instance.department_en = validated_data.get("department_en", instance.department_en)
        instance.id = validated_data.get("id", instance.id)
        instance.title = validated_data.get("title", instance.title)
        instance.part = validated_data.get("part", instance.part)
        instance.save()
        return instance


class MembersSerializer(serializers.HyperlinkedModelSerializer):

    did = serializers.IntegerField(required=True, error_messages={"blank": '41010-部门ID不能为空', "invalid": '42020-类型错误'})
    department = serializers.CharField(max_length=10, required=True, trim_whitespace=True,
                                       error_messages={"max_length": '42021-部门名称过长', "blank": '41011-部门名称不能为空'})
    grade = serializers.IntegerField(required=True, min_value=2001, max_value=2022,
                                     error_messages={"max_value": '42025-年级数过大', "blank": "41015-年级数不能为空",
                                                     "min_value": '42026-年级数过小'})
    name = serializers.CharField(required=True, trim_whitespace=True, max_length=6,
                                 error_messages={"blank": '41016-姓名不能为空', "max_length": '42027-姓名过长'})
    motto = serializers.CharField(required=False, trim_whitespace=True, max_length=25, validators=[name_validate],
                                  error_messages={"max_length": '42028-座右铭过长'})
    # avatar = serializers.ImageField(validators=[validate_avatar])

    class Meta:
        model = Members
        fields = ('did', 'department', 'grade', 'name', 'motto')

    def create(self, validated_data):
        return Members.objects.create(**validated_data)

    def update(self, instance, validated_data):
        instance.did = validated_data.get("did", instance.did)
        instance.department = validated_data.get("department", instance.department)
        instance.grade = validated_data.get("grade", instance.grade)
        instance.name = validated_data.get("name", instance.name)
        instance.motto = validated_data.get("motto", instance.motto)
        instance.avatar = validated_data.get("avatar", instance.avatar)
        instance.save()
        return instance


class HistorySerializer(serializers.Serializer):

    grade = serializers.IntegerField(required=True, min_value=2001, max_value=2022,
                                     error_messages={"max_value": '42025-年级数过大', "blank": "41015-年级数不能为空",
                                                     "min_value": '42026-年级数过小'})
    did = serializers.IntegerField(required=True, error_messages={"blank": '41010-部门ID不能为空', "invalid": '42020-类型错误'})
    department = serializers.CharField(max_length=10, required=True, trim_whitespace=True,
                                       validators=[validate_department],
                                       error_messages={"max_length": '42021-部门名称过长', "blank": '41011-部门名称不能为空'})

    # class Meta:
    #     model = History
    #     fields = ('grade', 'did', 'department')
    #

    def create(self, validated_data):
        return History.objects.create(**validated_data)

    def update(self, instance, validated_data):
        instance.department = validated_data.get("department", instance.department)
        instance.grade = validated_data.get("grade", instance.grade)
        instance.did = validated_data.get("did", instance.did)
        instance.save()
        return instance