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#pragma once

#include <chrono>
#include <cstdint>
#include <string>

class BaseValue {
public:
	enum Type {
		NumericType,
		TextType,
		DateTimeType,

		/// An unspecified type, otherwise known as "any" in some contexts.
		InvalidType,
		TypeCount = InvalidType,
	};

private:
	Type mType;

public:
	BaseValue(Type type);
	virtual ~BaseValue() = default;

	BaseValue(const BaseValue&) = delete;
	BaseValue& operator=(const BaseValue&) = delete;
	BaseValue(BaseValue&&) = default;
	BaseValue& operator=(BaseValue&&) = default;

	Type GetType() const;
};

class NumericValue : public BaseValue {
private:
	double mValue;

public:
	NumericValue();

	int64_t GetInt() const;
	double GetValue() const;
	void SetValue(double value);
};

class TextValue : public BaseValue {
private:
	std::string mValue;

public:
	TextValue();
	const std::string& GetValue() const;
	void SetValue(const std::string& value);
};

class DateTimeValue : public BaseValue {
private:
	std::chrono::time_point<std::chrono::system_clock> mValue;

public:
	DateTimeValue();
	const std::chrono::time_point<std::chrono::system_clock>& GetValue() const;
	void SetValue(const std::chrono::time_point<std::chrono::system_clock>& value);
};