#include "InputValidator.h"

bool InputValidator::isUserNameValid(string userName)
{
	if (userName.length() >= 3) {
		for each (char c in userName)
		{
			if (!islower(c) && !isupper(c) && !isdigit(c) && c != '_') {
				return false;
			}
		}
		return true;
	}
	return false;
}

bool InputValidator::isPasswordValid(string password)
{
	bool haveLower = false;
	bool haveUpper = false;
	bool haveSpecial = false;
	bool haveDigit = false;

	if (password.length() >= 5) {
		for each (char c in password)
		{
			if (islower(c)) {
				haveLower = true;
			}
			else if (isupper(c)) {
				haveUpper = true;
			}
			else if (isdigit(c)) {
				haveDigit = true;
			}
			else if (c == '!' || c == '@' || c == '#' || c == '$') {
				haveSpecial = true;
			}
			else {
				return false;
			}
		}
		if (haveDigit && haveLower && haveUpper && haveSpecial) {
			return true;
		}
	}
	return false;
}

bool InputValidator::isEmailValid(string email)
{
	int atPosition = email.find('@', 3);
	int dotPosition = email.find('.');
	if (atPosition < 0 || dotPosition < 0 || (dotPosition - atPosition > 6) || (dotPosition - atPosition < 2)) {
		return false;
	}

	for (int i = 0; i < atPosition; i++)
	{
		if (!islower(email[i]) && !isupper(email[i]) && !isdigit(email[i]) && email[i] != '_') {
			return false;
		}
	}

	for (int i = atPosition + 1; i < dotPosition; i++)
	{
		if (!islower(email[i])) {
			return false;
		}
	}

	string domain = email.substr(dotPosition + 1, email.length() - dotPosition);

	if (domain != "com" && domain != "bg" && domain != "net" && domain != "en") {
		return false;
	}

	return true;
}

bool InputValidator::isRealNameValid(string name)
{
	if (name.empty()) {
		return true;
	}

	int firstSpacePosition = name.find_first_of(' ', 1);
	int secondSpacePosition = name.find_first_of(' ', firstSpacePosition + 1);

	if (name.length() > 255 || firstSpacePosition < 0 || secondSpacePosition < 0) {
		return false;
	}

	string firstName = name.substr(0, firstSpacePosition);
	string secondName = name.substr(firstSpacePosition + 1, secondSpacePosition - firstSpacePosition - 1);
	string thirdName = name.substr(secondSpacePosition + 1, name.length() - secondSpacePosition);

	for each (char c in firstName)
	{
		if (!islower(c) && !isupper(c)) {
			return false;
		}
	}

	for each (char c in secondName)
	{
		if (!islower(c) && !isupper(c)) {
			return false;
		}
	}

	for each (char c in thirdName)
	{
		if (!islower(c) && !isupper(c)) {
			return false;
		}
	}

	return true;
}

bool InputValidator::isAddressValid(string address)
{
	if (address.empty()) {
		return true;
	}

	if (address.length() > 255) {
		return false;
	}

	for each (char c in address)
	{
		if (!islower(c) && !isupper(c) && !isdigit(c) && c != ' ') {
			return false;
		}
	}

	return true;
}

bool InputValidator::isBirthdateValid(string birthDate)
{
	if (birthDate.empty()) {
		return true;
	}

	int firstDashPosition = birthDate.find_first_of('-');
	int secondDashPosition = birthDate.find_first_of('-', firstDashPosition + 1);

	if (birthDate.length() != 10 || firstDashPosition != 4 || secondDashPosition != 7) {
		return false;
	}

	for (int  i = 0; i < birthDate.length(); i++)
	{
		if (i == firstDashPosition || i == secondDashPosition) {
			continue;
		}

		if (!isdigit(birthDate[i])) {
			return false;
		}
	}

	return true;
}