// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
/**
 * Before running this C++ code example, set up your development environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-cpp/v1/developer-guide/getting-started.html
 *
 **/

// snippet-start:[cpp.example_code.rds.hello_rds]
#include <aws/core/Aws.h>
#include <aws/rds/RDSClient.h>
#include <aws/rds/model/DescribeDBInstancesRequest.h>
#include <iostream>

/*
 *  A "Hello Rds" starter application which initializes an Amazon Relational Database Service (Amazon RDS) client and
 *  describes the Amazon RDS instances.
 *
 *  main function
 *
 *  Usage: 'hello_rds'
 *
 */

int main(int argc, char **argv) {
    Aws::SDKOptions options;
    // Optionally change the log level for debugging.
//   options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug;
    Aws::InitAPI(options); // Should only be called once.
    int result = 0;
    {
        Aws::Client::ClientConfiguration clientConfig;
        // Optional: Set to the AWS Region (overrides config file).
        // clientConfig.region = "us-east-1";

        Aws::RDS::RDSClient rdsClient(clientConfig);
        Aws::String marker;
        std::vector<Aws::String> instanceDBIDs;

        do {
            Aws::RDS::Model::DescribeDBInstancesRequest request;

            if (!marker.empty()) {
                request.SetMarker(marker);
            }

            Aws::RDS::Model::DescribeDBInstancesOutcome outcome =
                    rdsClient.DescribeDBInstances(request);

            if (outcome.IsSuccess()) {
                for (auto &instance: outcome.GetResult().GetDBInstances()) {
                    instanceDBIDs.push_back(instance.GetDBInstanceIdentifier());
                }
                marker = outcome.GetResult().GetMarker();
            } else {
                result = 1;
                std::cerr << "Error with RDS::DescribeDBInstances. "
                          << outcome.GetError().GetMessage()
                          << std::endl;
                break;
            }
        } while (!marker.empty());

        std::cout << instanceDBIDs.size() << " RDS instances found." << std::endl;
        for (auto &instanceDBID: instanceDBIDs) {
            std::cout << "   Instance: " << instanceDBID << std::endl;
        }
    }

    Aws::ShutdownAPI(options); // Should only be called once.
    return result;
}
// snippet-end:[cpp.example_code.rds.hello_rds]