# Copyright (c) 2015 Ericsson AB.
# Copyright (c) 2024 Wind River Systems, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

"""OrchRequest object."""

from oslo_versionedobjects import base as ovo_base
from oslo_versionedobjects import fields as ovo_fields

from dcorch.common import exceptions
from dcorch.db import api as db_api
from dcorch.objects import base
from dcorch.objects import orchjob


@base.OrchestratorObjectRegistry.register
class OrchRequest(base.OrchestratorObject, base.VersionedObjectDictCompat):
    """DC Orchestrator orchestration request object."""

    fields = {
        "id": ovo_fields.IntegerField(),
        "uuid": ovo_fields.UUIDField(),
        "state": ovo_fields.StringField(),
        "try_count": ovo_fields.IntegerField(),
        "api_version": ovo_fields.StringField(nullable=True),
        "target_region_name": ovo_fields.StringField(),
        "orch_job_id": ovo_fields.IntegerField(),
        "orch_job": ovo_fields.ObjectField("OrchJob"),
        "updated_at": ovo_fields.DateTimeField(nullable=True),
        "deleted_at": ovo_fields.DateTimeField(nullable=True),
        "deleted": ovo_fields.IntegerField(),
    }

    def create(self):
        if self.obj_attr_is_set("id"):
            raise exceptions.ObjectActionError(
                action="create", reason="already created"
            )
        updates = self.obj_get_changes()
        try:
            orch_job_id = updates.pop("orch_job_id")
        except KeyError:
            raise exceptions.ObjectActionError(
                action="create",
                reason="cannot create a Subcloud object without a " "orch_job_id set",
            )

        updates = self.obj_get_changes()
        try:
            target_region_name = updates.pop("target_region_name")
        except KeyError:
            raise exceptions.ObjectActionError(
                action="create",
                reason="cannot create a Subcloud object without a "
                "target_region_name set",
            )

        db_orch_request = db_api.orch_request_create(
            self._context, orch_job_id, target_region_name, updates
        )
        return self._from_db_object(self._context, self, db_orch_request)

    @staticmethod
    def _from_db_object(context, obj, db_obj):
        # This call to _as_dict() can't be the proper way to do it,
        # but I couldn't figure out the "correct" method.
        db_orch_request = db_obj._as_dict()
        # When first creating the request, the db_obj won't have
        # orch_job set.
        if "orch_job" in db_orch_request:
            orch_job = orchjob.OrchJob._from_db_object(
                context, orchjob.OrchJob(), db_orch_request["orch_job"]
            )
        else:
            orch_job = orchjob.OrchJob.get_by_id(
                context, db_orch_request["orch_job_id"]
            )
        db_orch_request["orch_job"] = orch_job
        return super(obj.__class__, obj)._from_db_object(context, obj, db_orch_request)

    @classmethod
    def get_by_id(cls, context, id):
        db_orch_request = db_api.orch_request_get(context, id)
        return cls._from_db_object(context, cls(), db_orch_request)

    @classmethod
    def get_most_recent_failed_request(cls, context):
        db_orch_request = db_api.orch_request_get_most_recent_failed_request(context)
        if db_orch_request:
            return cls._from_db_object(context, cls(), db_orch_request)
        else:
            return None

    def save(self):
        updates = self.obj_get_changes()
        updates.pop("id", None)
        updates.pop("uuid", None)
        db_orch_request = db_api.orch_request_update(
            self._context, self.id, updates  # pylint: disable=E1101
        )
        self._from_db_object(self._context, self, db_orch_request)
        self.obj_reset_changes()

    def delete(self):
        db_api.orch_request_destroy(self._context, self.id)  # pylint: disable=E1101

    @classmethod
    def delete_previous_failed_requests(cls, context, delete_time):
        db_api.orch_request_delete_previous_failed_requests(context, delete_time)


@base.OrchestratorObjectRegistry.register
class OrchRequestList(ovo_base.ObjectListBase, base.OrchestratorObject):
    """DC Orchestrator orchestration request list object."""

    VERSION = "1.1"

    fields = {
        "objects": ovo_fields.ListOfObjectsField("OrchRequest"),
    }

    @classmethod
    def get_by_attrs(
        cls,
        context,
        endpoint_type,
        resource_type=None,
        target_region_name=None,
        states=None,
    ):
        orch_reqs = db_api.orch_request_get_by_attrs(
            context,
            endpoint_type,
            resource_type=resource_type,
            target_region_name=target_region_name,
            states=states,
        )
        return ovo_base.obj_make_list(context, cls(context), OrchRequest, orch_reqs)