#ifndef interface_h
#define interface_h

#include <iostream>
#include <string>

bool interface(const std::string command, const std::string text, int &number1, double &number2);
bool interface(const std::string command, const std::string text, int &number1);
bool interface(const std::string command, const std::string text);
bool is_number(const std::string text);
double to_double(const std::string text);

bool interface(const std::string command, const std::string text, int &number1, double &number2) {
    bool result = false;
    
    if (command == text) {
        std::string param1, param2;
        std::cin >> param1 >> param2;
        
        if (is_number(param1) && is_number(param2)) {
            number1 = to_double(param1);
            number2 = to_double(param2);
            
            result = true;
        }
    }
    
    return result;
}

bool interface(const std::string command, const std::string text, int &number1) {
    bool result = false;
    
    if (command == text) {
        std::string param1;
        std::cin >> param1;
        
        if(is_number(param1)) {
            number1 = to_double(param1);
            
            result = true;
        }
    }
    
    return result;
}

bool interface(const std::string command, const std::string text) {
    bool result = false;
    
    if (command == text) {
        result = true;
    }
    
    return result;
}

bool is_number(const std::string text) {
    char *num;
    std::strtod(text.c_str(), &num);
    
    return *num == 0;
}

double to_double(const std::string text) {
    char *tmp;
    
    return strtod(text.c_str(), &tmp);
}

#endif /* interface_h */