from rest_framework import serializers
from django.utils.translation import gettext_lazy as _

from common.validators import ProjectUniqueValidator
from common.drf.fields import ObjectRelatedField, LabeledChoiceField
from assets.models import Platform, Account
from assets.serializers import HostSerializer
from ..models import AppletHost, AppletHostDeployment, Applet
from .applet import AppletSerializer
from .. import const


__all__ = [
    'AppletHostSerializer', 'AppletHostDeploymentSerializer',
    'AppletHostAccountSerializer', 'AppletHostAppletReportSerializer',
    'AppletHostStartupSerializer',
]


class DeployOptionsSerializer(serializers.Serializer):
    LICENSE_MODE_CHOICES = (
        (4, _('Per Session')),
        (2, _('Per Device')),
    )
    SESSION_PER_USER = (
        (1, _("Disabled")),
        (0, _("Enabled")),
    )
    RDS_Licensing = serializers.BooleanField(default=False, label=_("RDS Licensing"))
    RDS_LicenseServer = serializers.CharField(default='127.0.0.1', label=_('RDS License Server'), max_length=1024)
    RDS_LicensingMode = serializers.ChoiceField(choices=LICENSE_MODE_CHOICES, default=4, label=_('RDS Licensing Mode'))
    RDS_fSingleSessionPerUser = serializers.ChoiceField(choices=SESSION_PER_USER, default=1, label=_("RDS fSingleSessionPerUser"))
    RDS_MaxDisconnectionTime = serializers.IntegerField(default=60000, label=_("RDS Max Disconnection Time"))
    RDS_RemoteAppLogoffTimeLimit = serializers.IntegerField(default=0, label=_("RDS Remote App Logoff Time Limit"))


class AppletHostSerializer(HostSerializer):
    deploy_options = DeployOptionsSerializer(required=False, label=_("Deploy options"))
    load = LabeledChoiceField(
        read_only=True, label=_('Load status'), choices=const.ComponentLoad.choices,
    )

    class Meta(HostSerializer.Meta):
        model = AppletHost
        fields = HostSerializer.Meta.fields + [
            'load', 'date_synced', 'deploy_options'
        ]
        extra_kwargs = {
            'date_synced': {'read_only': True}
        }

    def __init__(self, *args, data=None, **kwargs):
        if data:
            self.set_initial_data(data)
            kwargs['data'] = data
        super().__init__(*args, **kwargs)

    @staticmethod
    def set_initial_data(data):
        platform = Platform.objects.get(name='RemoteAppHost')
        data.update({
            'platform': platform.id,
            'nodes_display': [
                'RemoteAppHosts'
            ]
        })

    def get_validators(self):
        validators = super().get_validators()
        # 不知道为啥没有继承过来
        uniq_validator = ProjectUniqueValidator(
            queryset=AppletHost.objects.all(),
            fields=('org_id', 'name')
        )
        validators.append(uniq_validator)
        return validators


class HostAppletSerializer(AppletSerializer):
    publication = serializers.SerializerMethodField()

    class Meta(AppletSerializer.Meta):
        fields = AppletSerializer.Meta.fields + ['publication']


class AppletHostDeploymentSerializer(serializers.ModelSerializer):
    class Meta:
        model = AppletHostDeployment
        fields_mini = ['id', 'host', 'status']
        read_only_fields = [
            'status', 'date_created', 'date_updated',
            'date_start', 'date_finished'
        ]
        fields = fields_mini + ['comment'] + read_only_fields


class AppletHostAccountSerializer(serializers.ModelSerializer):
    class Meta:
        model = Account
        fields = ['id', 'username', 'secret', 'is_active', 'date_updated']


class AppletHostAppletReportSerializer(serializers.Serializer):
    id = serializers.UUIDField(read_only=True)
    name = serializers.CharField()
    version = serializers.CharField()


class AppletHostStartupSerializer(serializers.Serializer):
    pass