#pragma once

#include <functional>
#include <memory>

class ISeedGenerator
{
public:
	[[nodiscard]] virtual unsigned int random_seed() const = 0;
};

using ISeedGeneratorFactory = std::function<std::shared_ptr<ISeedGenerator>()>;

/**
 * Pseudo-random unsigned integer generator.
 */
class IRandomNumberGenerator
{
public:
	/**
	 * Returns a number in the range of a to b.
	 *
	 * @param a A number lower than b
	 * @param b A number greater than a
	 */
	[[nodiscard]] virtual unsigned int in_range(const unsigned int &a,
												const unsigned int &b) const = 0;
};

using IRandomNumberGeneratorFactory =
	std::function<std::shared_ptr<IRandomNumberGenerator>(const unsigned int &seed)>;