Config.h

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#pragma once
 
#include <vector>
#include <string>
#include <map>
#include <nlohmann/json.hpp>
#include "ship/core/Component.h"
 
namespace Ship {
class Config;
class Window;
 
class ConfigVersionUpdater {
  protected:
    uint32_t mVersion;
 
  public:
    ConfigVersionUpdater(uint32_t toVersion);
    virtual void Update(Config* conf) = 0;
 
    uint32_t GetVersion();
};
 
class Config : public Component {
  public:
    Config(const std::string& path, std::shared_ptr<Window> window = nullptr);
    ~Config();
 
    const std::string& GetPath() const;
 
    std::string GetString(const std::string& key, const std::string& defaultValue = "");
 
    float GetFloat(const std::string& key, float defaultValue = 0.0f);
 
    bool GetBool(const std::string& key, bool defaultValue = false);
 
    int32_t GetInt(const std::string& key, int32_t defaultValue = 0);
 
    uint32_t GetUInt(const std::string& key, uint32_t defaultValue = 0);
 
    void SetString(const std::string& key, const std::string& value);
 
    void SetFloat(const std::string& key, float value);
 
    void SetBool(const std::string& key, bool value);
 
    void SetInt(const std::string& key, int32_t value);
 
    void SetUInt(const std::string& key, uint32_t value);
 
    void Erase(const std::string& key);
 
    void EraseBlock(const std::string& key);
 
    void SetBlock(const std::string& key, nlohmann::json block);
 
    void Copy(const std::string& fromKey, const std::string& toKey);
 
    bool Contains(const std::string& key);
 
    void Reload();
 
    void Save();
 
    nlohmann::json GetNestedJson();
 
    bool RegisterVersionUpdater(std::shared_ptr<ConfigVersionUpdater> versionUpdater);
 
    void RunVersionUpdates();
 
  protected:
    nlohmann::json Nested(const std::string& key);
 
    static std::string FormatNestedKey(const std::string& key);
 
    template <typename T> void SetArray(const std::string& key, std::vector<T> array);
 
    template <typename T> std::vector<T> GetArray(const std::string& key);
 
  private:
    nlohmann::json mFlattenedJson;
    nlohmann::json mNestedJson;
    std::string mPath;
    bool mIsNewInstance;
    std::map<uint32_t, std::shared_ptr<ConfigVersionUpdater>> mVersionUpdaters;
    std::shared_ptr<Window> mWindow;
};
} // namespace Ship