// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

#include <gtest/gtest.h>

#include <mesos/mesos.hpp>

#include <mesos/resource_provider/resource_provider.hpp>

#include <stout/error.hpp>
#include <stout/gtest.hpp>
#include <stout/option.hpp>
#include <stout/uuid.hpp>

#include "common/protobuf_utils.hpp"

#include "resource_provider/validation.hpp"

namespace call = mesos::internal::resource_provider::validation::call;

using mesos::resource_provider::Call;

namespace mesos {
namespace internal {
namespace tests {

TEST(ResourceProviderCallValidationTest, Subscribe)
{
  Call call;
  call.set_type(Call::SUBSCRIBE);

  // Expecting `Call::Subscribe`.
  Option<Error> error = call::validate(call, None());
  EXPECT_SOME(error);

  Call::Subscribe* subscribe = call.mutable_subscribe();
  ResourceProviderInfo* info = subscribe->mutable_resource_provider_info();
  info->set_type("org.apache.mesos.rp.test");
  info->set_name("test");

  error = call::validate(call, None());
  EXPECT_NONE(error);
}


TEST(ResourceProviderCallValidationTest, UpdateOperationStatus)
{
  Call call;
  call.set_type(Call::UPDATE_OPERATION_STATUS);

  // Expecting a resource provider ID and `Call::UpdateOperationStatus`.
  Option<Error> error = call::validate(call, None());
  EXPECT_SOME(error);

  ResourceProviderID* id = call.mutable_resource_provider_id();
  id->set_value(id::UUID::random().toString());

  // Still expecting `Call::UpdateOperationStatus`.
  error = call::validate(call, None());
  EXPECT_SOME(error);

  Call::UpdateOperationStatus* update =
    call.mutable_update_operation_status();

  update->mutable_framework_id()->set_value(id::UUID::random().toString());
  update->mutable_operation_uuid()->CopyFrom(protobuf::createUUID());

  OperationStatus* status = update->mutable_status();
  status->mutable_operation_id()->set_value(id::UUID::random().toString());
  status->set_state(OPERATION_FINISHED);

  error = call::validate(call, None());
  EXPECT_NONE(error);

  // If given some `ResourceProviderInfo` the call is rejected
  // since above status had no resource provider ID set.
  ResourceProviderInfo resourceProviderInfo;
  resourceProviderInfo.set_type("org.apache.mesos.rp.test");
  resourceProviderInfo.set_name("test");
  resourceProviderInfo.mutable_id()->set_value("test_id");

  error = call::validate(call, resourceProviderInfo);
  EXPECT_SOME(error);

  // If the provider of the operation state is consistent
  // with the given provider info the call validates.
  status->mutable_resource_provider_id()->CopyFrom(resourceProviderInfo.id());

  error = call::validate(call, resourceProviderInfo);
  EXPECT_NONE(error);
}


TEST(ResourceProviderCallValidationTest, UpdateState)
{
  Call call;
  call.set_type(Call::UPDATE_STATE);

  // Expecting a resource provider ID and `Call::UpdateState`.
  Option<Error> error = call::validate(call, None());
  EXPECT_SOME(error);

  ResourceProviderID* id = call.mutable_resource_provider_id();
  id->set_value(id::UUID::random().toString());

  // Still expecting `Call::UpdateState`.
  error = call::validate(call, None());
  EXPECT_SOME(error);

  Call::UpdateState* updateState = call.mutable_update_state();
  updateState->mutable_resource_version_uuid()->CopyFrom(
      protobuf::createUUID());

  error = call::validate(call, None());
  EXPECT_NONE(error);

  // If given some `ResourceProviderInfo` the call still validates.
  ResourceProviderInfo resourceProviderInfo;
  resourceProviderInfo.set_type("org.apache.mesos.rp.test");
  resourceProviderInfo.set_name("test");
  resourceProviderInfo.mutable_id()->set_value("test_id");

  error = call::validate(call, resourceProviderInfo);
  EXPECT_NONE(error);

  // Adding resource without `provider_id` if given a provider is not rejected.
  Resource* resource = updateState->add_resources();
  resource->CopyFrom(*Resources::parse("disk", "1024", "*"));

  error = call::validate(call, resourceProviderInfo);
  EXPECT_SOME(error);

  // A resource with a `provider_id` not matching the provider is rejected.
  resource->mutable_provider_id()->set_value("another_id");

  error = call::validate(call, resourceProviderInfo);
  EXPECT_SOME(error);

  // The call is accepted if the resource's `provider_id` matches the provider.
  resource->mutable_provider_id()->CopyFrom(resourceProviderInfo.id());

  error = call::validate(call, resourceProviderInfo);
  EXPECT_NONE(error);
}

} // namespace tests {
} // namespace internal {
} // namespace mesos {