/*
    PIP - Platform Independent Primitives
    Unit value
    Ivan Pelipenko peri4ko@yandex.ru

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "piunits_value.h"

#include "piliterals_string.h"
#include "piunits_prefix.h"


PIUnits::Value::Value(double v, int t) {
	m_value = v;
	m_class = Class::Internal::typeClasses.value(t);
	if (m_class) m_type = t;
}


PIString PIUnits::Value::toString(char format, int prec) const {
	if (isNotValid()) return Class::Internal::unknown;
	PIString ret;
	if (m_class->supportPrefixes(m_type)) {
		ret = Prefix::valueToString(m_value, m_class, m_type, format, prec);
	} else
		ret = m_class->valueToString(m_value, format, prec) + " "_a;
	ret += m_class->unit(m_type);
	return ret;
}


bool PIUnits::Value::convert(int type_to) {
	if (m_type == type_to) return true;
	auto * class_to = Class::Internal::typeClasses.value(type_to);
	if (!class_to) return false;
	if (m_class->classID() != class_to->classID()) return false;
	m_value = m_class->convert(m_value, m_type, type_to);
	m_type  = type_to;
	return true;
}


PIUnits::Value PIUnits::Value::converted(int type_to) {
	Value ret(*this);
	if (!ret.convert(type_to)) return {};
	return ret;
}