from rest_framework import serializers

from apps.system.models import City, Organization
from .models import QAction, QActionItem, QOrg, QTask, Quali, QualiLib
from django.db import transaction
from apps.system.serializers import OrganizationSimpleSerializer, DictSerializer
from rest_framework.exceptions import ParseError


class QualiLibListSerializer(serializers.ModelSerializer):
    class Meta:
        model = QualiLib
        fields = '__all__'

class QualiListSerializer(serializers.ModelSerializer):
    province_name = serializers.CharField(source='province.name', read_only=True)
    city_name = serializers.CharField(source='city.name', read_only=True)
    service = serializers.CharField(source='org.service', read_only=True)
    class Meta:
        model = Quali
        fields = '__all__'


class QTaskCreateUpdateSerializer(serializers.ModelSerializer):
    orgs = serializers.PrimaryKeyRelatedField(label='上报公司ID列表',
                                              queryset = Organization.objects.all(), many=True, write_only=True)
    class Meta:
        model = QTask
        fields = ['name', 'end_date', 'orgs']
    
    def create(self, validated_data):
        with transaction.atomic():
            orgs = validated_data.pop('orgs')
            validated_data['state'] = '待发布'
            instance = super().create(validated_data)
            for i in orgs:
                QOrg.objects.get_or_create(qtask=instance, org=i, 
                                        defaults={'qtask': instance, 'org': i})
            return instance

    def update(self, instance, validated_data):
        with transaction.atomic():
            if instance.state == '已关闭':
                raise ParseError('任务已关闭,不可更改')
            orgs = validated_data.pop('orgs')
            instance = super().update(instance, validated_data)
            for i in orgs:
                QOrg.objects.get_or_create(qtask=instance, org=i,
                                        defaults={'qtask': instance, 'org': i})
            return instance
        

class QTaskListSerializer(serializers.ModelSerializer):
    orgs_count = serializers.SerializerMethodField()

    class Meta:
        model = QTask
        fields = '__all__'

    def get_orgs_count(self, obj):
        count = QOrg.objects.filter(qtask=obj).count()
        return count

class QTaskSimpleSerializer(serializers.ModelSerializer):
    class Meta:
        model = QTask
        fields = '__all__'

class QOrgListSerializer(serializers.ModelSerializer):
    org_ = OrganizationSimpleSerializer(source='org', read_only=True)
    qtask_ = QTaskSimpleSerializer(source='qtask', read_only=True)
    class Meta:
        model = QOrg
        fields =  '__all__'


class QActionListSerializer(serializers.ModelSerializer):
    quali_name = serializers.CharField(source='quali.name', read_only=True)
    atype_name = serializers.CharField(source='atype.name', read_only=True)
    afield_name = serializers.CharField(source='afield.name', read_only=True)
    class Meta:
        model = QAction
        fields = '__all__'


class QActionServiceSerializer(serializers.ModelSerializer):
    class Meta:
        model = QAction
        fields = ['qtask', 'value2']
    
    def create(self, validated_data):
        validated_data['action'] = 'service:update'
        return super().create(validated_data)

class QualiCreateSerializer(serializers.ModelSerializer):
    citys = serializers.ListField(child=serializers.IntegerField(), label='城市ID列表')
    class Meta:
        model = Quali
        fields = ['name', 'type', 'grade', 'scope', 'level', 'province', 'city', 'description', 'citys']


class QualiUpdateSerializer(serializers.ModelSerializer):
    citys = serializers.ListField(child=serializers.IntegerField(), label='城市ID列表')
    id = serializers.IntegerField(label='修改资质的ID')
    class Meta:
        model = Quali
        fields = ['scope', 'level', 'description', 'id', 'citys']

class QualiSerializer(serializers.ModelSerializer):
    class Meta:
        model = Quali
        fields = '__all__'

class QActionQualiCreateSerializer(serializers.ModelSerializer):
    value2 = QualiCreateSerializer()
    class Meta:
        model = QAction
        fields = ['qtask', 'value2']

    def create(self, validated_data):
        validated_data['action'] = 'quali:create'
        if validated_data['value2']['type'] in ['CMA', 'CNAS']:
            validated_data['value2']['name'] = validated_data['value2']['type']
        value2 = validated_data['value2']
        if value2['province']:
            value2['province'] = value2['province'].id
        if value2['city']:
            value2['city'] = value2['city'].id
        return super().create(validated_data)

class QActionQualiUpdateSerializer(serializers.ModelSerializer):
    value2 = QualiUpdateSerializer()
    class Meta:
        model = QAction
        fields = ['qtask', 'value2']
    
    def create(self, validated_data):
        validated_data['action'] = 'quali:update'
        return super().create(validated_data)

class QActionACreateSerializer(serializers.ModelSerializer):
    class Meta:
        model = QAction
        fields = ['atype', 'afield', 'file', 'num', 'qtask']
        extra_kwargs = {'atype': {'required': True}, 'afield': {'required': True}, 'file': {'required': True}}
    
    def create(self, validated_data):
        validated_data['action'] = 'ablity:create'
        return super().create(validated_data)


class QActionItemSerializer(serializers.ModelSerializer):
    class Meta:
        model = QActionItem
        fields = ['action', 'field', 'value1', 'value2', 'city']


class QActionDetailSerializer(serializers.ModelSerializer):
    update_detail = QActionItemSerializer(source='items_qaction', many=True, read_only=True)
    class Meta:
        model = QAction
        fields ='__all__'