import functools, logging, operator
from enum import Enum
from typing import Dict, List
from common.orm.fields.EnumeratedField import EnumeratedField
from common.orm.fields.ForeignKeyField import ForeignKeyField
from common.orm.fields.PrimaryKeyField import PrimaryKeyField
from common.orm.fields.StringField import StringField
from common.orm.model.Model import Model, get_related_instances
from context.proto.context_pb2 import ServiceStatusEnum, ServiceTypeEnum
from .ConfigModel import ConfigModel
from .ConstraintModel import ConstraintsModel
from .ContextModel import ContextModel
from .Tools import grpc_to_enum

LOGGER = logging.getLogger(__name__)

class ORM_ServiceTypeEnum(Enum):
    UNKNOWN                   = ServiceTypeEnum.SERVICETYPE_UNKNOWN
    L3NM                      = ServiceTypeEnum.SERVICETYPE_L3NM
    L2NM                      = ServiceTypeEnum.SERVICETYPE_L2NM
    TAPI_CONNECTIVITY_SERVICE = ServiceTypeEnum.SERVICETYPE_TAPI_CONNECTIVITY_SERVICE

grpc_to_enum__service_type = functools.partial(
    grpc_to_enum, ServiceTypeEnum, ORM_ServiceTypeEnum)

class ORM_ServiceStatusEnum(Enum):
    UNDEFINED       = ServiceStatusEnum.SERVICESTATUS_UNDEFINED
    PLANNED         = ServiceStatusEnum.SERVICESTATUS_PLANNED
    ACTIVE          = ServiceStatusEnum.SERVICESTATUS_ACTIVE
    PENDING_REMOVAL = ServiceStatusEnum.SERVICESTATUS_PENDING_REMOVAL

grpc_to_enum__service_status = functools.partial(
    grpc_to_enum, ServiceStatusEnum, ORM_ServiceStatusEnum)

class ServiceModel(Model):
    pk = PrimaryKeyField()
    context_fk = ForeignKeyField(ContextModel)
    service_uuid = StringField(required=True, allow_empty=False)
    service_type = EnumeratedField(ORM_ServiceTypeEnum, required=True)
    service_constraints_fk = ForeignKeyField(ConstraintsModel)
    service_status = EnumeratedField(ORM_ServiceStatusEnum, required=True)
    service_config_fk = ForeignKeyField(ConfigModel)

    def dump_id(self) -> Dict:
        context_id = ContextModel(self.database, self.context_fk).dump_id()
        return {
            'context_id': context_id,
            'service_uuid': {'uuid': self.service_uuid},
        }

    def dump_endpoint_ids(self) -> List[Dict]:
        from .RelationModels import ServiceEndPointModel # pylint: disable=import-outside-toplevel
        db_endpoints = get_related_instances(self, ServiceEndPointModel, 'endpoint_fk')
        return [db_endpoint.dump_id() for db_endpoint in sorted(db_endpoints, key=operator.attrgetter('pk'))]

    def dump_constraints(self) -> List[Dict]:
        return ConstraintsModel(self.database, self.service_constraints_fk).dump()

    def dump_config(self) -> Dict:
        return ConfigModel(self.database, self.service_config_fk).dump()

    def dump(   # pylint: disable=arguments-differ
            self, include_endpoint_ids=True, include_constraints=True, include_config_rules=True
        ) -> Dict:
        result = {
            'service_id': self.dump_id(),
            'service_type': self.service_type.value,
            'service_status': {'service_status': self.service_status.value},
        }
        if include_endpoint_ids: result['service_endpoint_ids'] = self.dump_endpoint_ids()
        if include_constraints: result['service_constraints'] = self.dump_constraints()
        if include_config_rules: result.setdefault('service_config', {})['config_rules'] = self.dump_config()
        return result
