#include "convert.h"

void	fromDouble(double value) {
	// char
	std::cout << std::setw(7) << std::left << "char";
	if (value < 0 || value > std::numeric_limits<char>::max())
		std::cout << B_RED << "impossible" << RESET "\n";
	else if (!isprint(value))
		std::cout << B_RED << "non displayable" << RESET "\n";
	else
		std::cout << B_CYAN << static_cast<char>(value) << RESET "\n";

	// int
	std::cout << std::setw(7) << std::left << "int";
	if (value < std::numeric_limits<int>::min()
	 || value > std::numeric_limits<int>::max() )
		std::cout << B_RED << "impossible" << RESET "\n";
	else
		std::cout << B_CYAN << static_cast<int>(value) << RESET "\n";
	
	// float
	std::cout << std::setw(7) << std::left << "float";
	if (value < std::numeric_limits<float>::min()
	 || value > std::numeric_limits<float>::max() )
		std::cout << B_RED << "impossible" << RESET "\n";
	else
		std::cout << B_CYAN << static_cast<double>(value) << RESET "\n";
}

bool	isDouble(std::string str) {

	size_t	l;

	if (str[0] == '+' || str[0] == '-')
		str.erase(str.begin());
	if (str.length() == 0)
		return false;
	if (!str.compare("inf") || !str.compare("nan"))
		return true;
	l = str.find_first_not_of("0123456789");
	if (l == std::string::npos || str[l] != '.' || l > DOUBLE_MAX_LENGTH)
		return false;
	if (str.find_first_not_of("0123456789", l + 1) != std::string::npos)
		return false;
	if (l < DOUBLE_MAX_LENGTH)
		return true;
	if (str.compare(0, l, MAX_DOUBLE) > 0)
		return false;


	return true;
}

bool	checkDouble(std::string str) {
	double	d;

	if (!isDouble(str))
		return false;

	std::istringstream(str) >> d;
	std::cout << B_CYAN << d << B_YELLOW " double" RESET "\n";
	fromDouble(d);

	return true;
}