calculation

type CalculationHistory struct {
	History []CalculationResult `json:"result"`
}

type CalculationInput struct {
	Input string `json:"input"`
}

type CalculationResult struct {
	Input  string `json:"input"`
	Result string `json:"result"`
}

type ICalculationInput interface {
	GetInput() string
	Validate() errors.WrappedError
	Calculate() string
}

type ICalculatorRestHandler interface {
	HandleReadinessLiveness(context.Context, http.ResponseWriter, *http.Request)
	HandleCalculation(context.Context, http.ResponseWriter, *http.Request)
}

type ICalculatorService interface {
	GetCalculationHistory(context.Context) CalculationHistory
	Calculate(context.Context, ICalculationInput) (CalculationResult, errors.WrappedError)
}