// 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.
#pragma once

#include <cstdint>
#include <optional>
#include <string>

#include "kudu/client/client.h"
#include "kudu/gutil/macros.h"
#include "kudu/gutil/strings/substitute.h"

namespace kudu {
namespace client {

using std::string;
using strings::Substitute;

class KuduTableStatistics::Data {
 public:
  Data(std::optional<int64_t> on_disk_size,
       std::optional<int64_t> live_row_count,
       std::optional<int64_t> on_disk_size_limit,
       std::optional<int64_t> live_row_count_limit)
      : on_disk_size_(on_disk_size),
        live_row_count_(live_row_count),
        on_disk_size_limit_(on_disk_size_limit),
        live_row_count_limit_(live_row_count_limit) {
  }

  ~Data() {
  }

  string ToString() const {
    return Substitute("on disk size: $0\n"
                      "live row count: $1\n"
                      "on disk size limit: $2\n"
                      "live row count limit: $3\n",
                      on_disk_size_ ? std::to_string(*on_disk_size_) : "N/A",
                      live_row_count_ ? std::to_string(*live_row_count_) : "N/A",
                      on_disk_size_limit_ ? std::to_string(*on_disk_size_limit_) : "N/A",
                      live_row_count_limit_ ? std::to_string(*live_row_count_limit_) : "N/A");

  }

  const std::optional<int64_t> on_disk_size_;
  const std::optional<int64_t> live_row_count_;
  const std::optional<int64_t> on_disk_size_limit_;
  const std::optional<int64_t> live_row_count_limit_;

 private:
  DISALLOW_COPY_AND_ASSIGN(Data);
};

} // namespace client
} // namespace kudu