from apps.hrm.models import Certificate
from apps.opm.models import GasCheck, Operation, Opl, OplCate, OplCert, OplWorker
from apps.system.serializers import DictSerializer, DictSimpleSerializer
from apps.utils.serializers import CustomModelSerializer
from apps.utils.constants import EXCLUDE_FIELDS
from rest_framework import serializers
from django.db import transaction
from rest_framework.exceptions import ParseError


class OplCateCreateUpdateSerializer(CustomModelSerializer):
    class Meta:
        model = OplCate
        exclude = EXCLUDE_FIELDS


class OplCateSerializer(CustomModelSerializer):

    class Meta:
        model = OplCate
        fields = '__all__'


class OplCateDetailSerializer(CustomModelSerializer):
    measure_options_ = DictSimpleSerializer(source='measure_options', read_only=True, many=True)
    risk_options_ = DictSimpleSerializer(source='risk_options', read_only=True, many=True)
    close_options_ = DictSimpleSerializer(source='close_options', read_only=True, many=True)

    class Meta:
        model = OplCate
        fields = '__all__'


class OperationCreateUpdateSerializer(CustomModelSerializer):
    class Meta:
        model = Operation
        exclude = EXCLUDE_FIELDS + ['number']


class OperationSerializer(CustomModelSerializer):
    class Meta:
        model = Operation
        fields = "__all__"


class OplWorkerCreateSerializer(CustomModelSerializer):
    certificates = serializers.PrimaryKeyRelatedField(label='证书ID', many=True, queryset=Certificate.objects.all())

    class Meta:
        model = OplWorker
        fields = ['worker', 'duty', 'certificates', 'opl']

    def create(self, validated_data):
        opl = validated_data['opl']
        if opl.ticket:
            raise ParseError('许可证已处理不可新增')
        certificates = validated_data.pop('certificates')
        if OplWorker.objects.filter(worker=validated_data['worker'], opl=validated_data['opl']).exists():
            raise ParseError('该成员已加入')
        with transaction.atomic():
            oplw = super().create(validated_data)
            for x in certificates:
                oplc = OplCert.objects.filter(opl_worker=oplw, certificate=x).first()
                if oplc:
                    pass
                else:
                    oplc = OplCert
                    oplc.opl_worker = oplw
                    oplc.certificate = x
                for f in Certificate._meta.fields:
                    if f.name not in ['id']:
                        setattr(oplc, f.name, getattr(x, f.name, None))
                oplc.save()
        return oplw


class OplWorkerUpdateSerializer(CustomModelSerializer):
    certificates = serializers.PrimaryKeyRelatedField(label='证书ID', many=True, queryset=Certificate.objects.all())

    class Meta:
        model = OplWorker
        fields = ['duty', 'certificates']

    def update(self, instance, validated_data):
        certificates = validated_data.pop('certificates')
        with transaction.atomic():
            oplw = super().update(instance, validated_data)
            for x in certificates:
                oplc = OplCert.objects.filter(opl_worker=oplw, certificate=x).first()
                if oplc:
                    pass
                else:
                    oplc = OplCert
                    oplc.opl_worker = oplw
                    oplc.certificate = x
                for f in Certificate._meta.fields:
                    if f.name not in ['id']:
                        setattr(oplc, f.name, getattr(x, f.name, None))
                oplc.save()
        return oplw


class OplWorkerSerializer():
    class Meta:
        model = OplWorker
        fields = '__all__'


class GasCheckCreateUpdateSerializer(CustomModelSerializer):
    class Meta:
        model = GasCheck
        exclude = EXCLUDE_FIELDS

    def create(self, validated_data):
        opl = validated_data['opl']
        if opl.ticket:
            raise ParseError('许可证已处理不可新增')
        return super().create(validated_data)


class GasCheckSerializer(CustomModelSerializer):
    class Meta:
        model = GasCheck
        fields = '__all__'


class OplCreateUpdateSerializer(CustomModelSerializer):
    id = serializers.CharField(read_only=True)

    class Meta:
        model = Opl
        fields = ['id', 'operation', 'level', 'cate', 'start_time', 'end_time',
                  'dept_do', 'charger', 'monitor', 'work_time', 'work_type',
                  'accept_time', 'power', 'power_to', 'power_from',
                  'power_end_time', 'power_start_time', 'power_days',
                  'other_risk', 'other_emr', 'escape_route',
                  'risks_checked', 'measures_checked', 'create_imgs']

    def create(self, validated_data):
        operation = validated_data['operation']
        if operation.state == Operation.OP_CLOSE:
            raise ParseError('作业已关闭不可创建许可')
        return super().create(validated_data)


class OplSerializer(CustomModelSerializer):
    cate_name = serializers.CharField(source='cate.name', read_only=True)

    class Meta:
        model = Opl
        fields = '__all__'


class OplCloseSerializer(CustomModelSerializer):
    class Meta:
        model = Opl
        fields = ['close_imgs', 'close_note', 'close_dos', 'close_desc']