config_manager.hpp

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/*
 * Copyright 2025 Jinwoo Sung
 *
 * 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.
 */
 
#pragma once
 
#include <memory>
#include <string>
#include <vector>
 
#include "iconfig_manager.hpp"
#include "unilink/base/visibility.hpp"
 
namespace unilink {
namespace config {
 
class UNILINK_API ConfigManager : public ConfigManagerInterface {
 public:
  ConfigManager();
  ~ConfigManager() override;
 
  // Move semantics
  ConfigManager(ConfigManager&&) noexcept;
  ConfigManager& operator=(ConfigManager&&) noexcept;
 
  // Non-copyable
  ConfigManager(const ConfigManager&) = delete;
  ConfigManager& operator=(const ConfigManager&) = delete;
 
  // Configuration access
  std::any get(const std::string& key) const override;
  std::any get(const std::string& key, const std::any& default_value) const override;
  bool has(const std::string& key) const override;
 
  // Configuration modification
  ValidationResult set(const std::string& key, const std::any& value) override;
  bool remove(const std::string& key) override;
  void clear() override;
 
  // Configuration validation
  ValidationResult validate() const override;
  ValidationResult validate(const std::string& key) const override;
 
  // Configuration registration
  void register_item(const ConfigItem& item) override;
  void register_validator(const std::string& key, std::function<ValidationResult(const std::any&)> validator) override;
 
  // Change notifications
  void on_change(const std::string& key, ConfigChangeCallback callback) override;
  void remove_change_callback(const std::string& key) override;
 
  // Configuration persistence
  bool save_to_file(const std::string& filepath) const override;
  bool load_from_file(const std::string& filepath) override;
 
  // Configuration introspection
  std::vector<std::string> get_keys() const override;
  ConfigType get_type(const std::string& key) const override;
  std::string get_description(const std::string& key) const override;
  bool is_required(const std::string& key) const override;
 
 private:
  struct Impl;
  const Impl* get_impl() const { return impl_.get(); }
  Impl* get_impl() { return impl_.get(); }
  std::unique_ptr<Impl> impl_;
};
 
}  // namespace config
}  // namespace unilink