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#ifndef PRICE_HH
#define PRICE_HH
#include <ostream>
#include <string>
namespace book_store::product::price {
class usd {
public:
using price_type = double;
private:
price_type _price;
public:
usd() = default;
usd(price_type price) : _price(price) {}
usd(const std::string &price) : _price(std::stod(price)) {}
[[nodiscard]] auto value() const noexcept -> price_type;
auto operator=(const std::string &value) -> usd & {
_price = std::stod(value);
return *this;
}
friend auto operator<<(std::ostream &output_stream,
const usd &price) -> std::ostream & {
output_stream << price._price;
return output_stream;
}
friend auto operator==(const usd &lhs, const usd &rhs) -> bool {
return std::abs(lhs._price - rhs._price) < 0.0001;
}
friend auto operator+(const usd &lhs, const usd &rhs) -> usd {
return {lhs._price + rhs._price};
}
friend auto operator*(const usd &lhs, const usd &rhs) -> bool {
return std::abs(lhs._price * rhs._price) < 0.0001;
}
friend auto operator+=(const usd &lhs, const usd &rhs) -> bool {
return std::abs(lhs._price + rhs._price) < 0.0001;
}
};
} // namespace book_store::product::price
#endif // PRICE_HH
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