#include "ScalarConverter.hpp"


ScalarConverter::ScalarConverter()
{
}

ScalarConverter::ScalarConverter(const ScalarConverter &src)
{
    (void)src;
}

ScalarConverter& ScalarConverter::operator=(const ScalarConverter &src)
{
    (void)src; 
    return (*this); 
}

ScalarConverter::~ScalarConverter()
{
}

bool	ScalarConverter::isChar(const std::string &input)
{
	if (input.size() == 1)
		return (true);
	if (input.size() == 3)
		if (input[0] == '\'' && input[2] == '\'')
			return (true);
	return (false);
}

bool ScalarConverter::isInt(const std::string& input)
{
    if (input.empty())
        return false;
    size_t i = 0;
    if (input[0] == '+' || input[0] == '-')
        i = 1;
    if (i >= input.length())
        return false;
    while (i < input.length())
    {
        if (!std::isdigit(input[i]))
            return false;
        i++;
    }
    return true;
}

bool ScalarConverter::isFloat(const std::string& input)
{
    if (input.empty())
        return false;
    size_t i = 0;
    bool hasPoint = false;
    bool hasDigit = false;
    if (input[0] == '+' || input[0] == '-')
        i = 1;
    while (i < input.length())
    {
        if (std::isdigit(input[i]))
            hasDigit = true;
        else if (input[i] == '.' && !hasPoint)
            hasPoint = true;
        else if (input[i] == 'f' && i == input.length() - 1 && hasDigit)
            return true;
        else
            return false;
		i++;
    }
    return (hasDigit && hasPoint);
}

bool ScalarConverter::isDouble(const std::string& input)
{
    if (input.empty())
        return false;
    size_t i = 0;
    bool hasPoint = false;
    bool hasDigit = false;
    if (input[0] == '+' || input[0] == '-')
        i = 1;
    while (i < input.length())
    {
        if (std::isdigit(input[i]))
            hasDigit = true;
        else if (input[i] == '.' && !hasPoint)
            hasPoint = true;
        else
            return false;
        i++;
    }
    return (hasDigit && hasPoint);
}
bool	ScalarConverter::isOther(const std::string &input)
{
	const std::string	specials[] = { "-inff", "+inff", "nanf", "-inf", "+inf", "nan" };

	for (int i = 0; i < 6; i++)
	{
		if (input == specials[i])
			return (true);
	}
	return (false);
}

void	ScalarConverter::toChar(const std::string &input)
{
	char	c = input[0];
	int		i = static_cast<int>(c);
	float	f = static_cast<float>(c);
	double	d = static_cast<double>(c);

	if (input.size() == 3)
		if (input[0] == '\'' && input[2] == '\'');
			c = input[1];

	if (isprint(c))
		std::cout << "char:   \t'" << c << "'" << std::endl;
	else
		std::cout << "char:   \t" << "non displayable" << std::endl;
	std::cout << "int:    \t" << i << std::endl;
	std::cout << "float:  \t" << std::fixed << std::setprecision(1) << f << "f" << std::endl;
	std::cout << "double: \t" << d << std::endl;
}

void	ScalarConverter::toOther(const std::string &input)
{
	std::cout << "char:   \t" << "impossible" << std::endl;
	std::cout << "int:    \t" << "impossible" << std::endl;

	if (input == "-inff" || input == "+inff" || input == "nanf")
	{
		std::cout << "float:  \t" << input << std::endl;
		std::string inputFixed = input.substr(0, input.size() - 1);
		std::cout << "double: \t" << inputFixed << std::endl;
	}
	else
	{
		std::cout << "float:  \t" << input << "f" << std::endl;
		std::cout << "double: \t" << input << std::endl;
	}
}

void	ScalarConverter::convert(const std::string &input)
{
	if (isChar(input))
		toChar(input);
	else if (isInt(input))
		toInt(input); ////////////////
	else if (isFloat(input))
		toFloat(input); //////////////
	else if (isDouble(input))
		toDouble(input); /////////////
	else if (isOther(input))
		toOther(input);
	else
		std::cout <<"Invalid input." << std::endl;
}