/*
    PIP - Platform Independent Primitives
	Translation support
    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 "pitranslator.h"

#include "pivaluetree_conversions.h"
#include "tr/pip_all.h"


//! \class PITranslator pitranslator.h
//! \details
//! \~english \section PITranslator_sec0 Synopsis
//! \~russian \section PITranslator_sec0 Краткий обзор
//! \~english
//!
//! \~russian
//!


PIString PITranslator::tr(const PIString & in, const PIString & context) {
	auto s = instance();
	auto c = s->contexts.value(context.hash());
	if (!c) return in;
	return c->strings.value(in.hash(), in);
}


void PITranslator::clear() {
	instance()->clearInternal();
}


void PITranslator::loadLang(const PIString & short_lang) {
	auto s    = instance();
	auto vt   = PIValueTreeConversions::fromText(getBuiltinConfig());
	auto lang = vt.child(short_lang.toLowerCase().trim());
	for (const auto & cn: lang.children()) {
		auto c = s->createContextInternal(cn.name());
		for (const auto & s: cn.children())
			c->add(s.name(), s.value().toString());
	}
}


void PITranslator::loadConfig(const PIString & content) {
	auto s    = instance();
	auto lang = PIValueTreeConversions::fromText(content);
	for (const auto & cn: lang.children()) {
		auto c = s->createContextInternal(cn.name());
		for (const auto & s: cn.children())
			c->add(s.name(), s.value().toString());
	}
	auto c = s->createContextInternal("");
	for (const auto & s: lang.children()) {
		if (s.hasChildren()) continue;
		c->add(s.name(), s.value().toString());
	}
}


PITranslator::PITranslator() {}


PITranslator::~PITranslator() {
	clearInternal();
}


PITranslator * PITranslator::instance() {
	static PITranslator ret;
	return &ret;
}


void PITranslator::clearInternal() {
	piDeleteAll(contexts.values());
	contexts.clear();
}


PITranslator::Context * PITranslator::createContextInternal(const PIString & context) {
	auto & ret(contexts[context.hash()]);
	if (!ret) ret = new Context();
	return ret;
}


void PITranslator::Context::add(const PIString & in, const PIString & out) {
	strings[in.hash()] = out;
}