#include "rootnode.hpp"

#include <qjsonobject.h>

namespace ZShell::settings {

RootNode::RootNode(const QString& path, RootNode* fallback, QObject* parent)
	: ObjectNode(fallback, parent), m_file(new SettingsFile(path, this)) {
	QObject::connect(
		batcher(), &ChangeBatcher::dirtied, this, &RootNode::saveToFile);
	QObject::connect(
		m_file, &SettingsFile::changed, this, &RootNode::reloadFromFile);
	QObject::connect(
		m_file, &SettingsFile::readFailed, this, [this](const QString& error) {
			emit treeLoadFailed(this, error);
		});
	QObject::connect(
		m_file, &SettingsFile::writeFailed, this, [this](const QString& error) {
			emit treeSaveFailed(this, error);
		});
}

void RootNode::load() {
	if (m_file->load() != SettingsFile::LoadResult::Changed) reloadFromFile();
}

QList<Diagnostic> RootNode::diagnostics() const {
	return m_diagnostics;
}

void RootNode::reloadFromFile() {
	const auto oldDiagnostics = m_diagnostics;
	m_diagnostics.clear();

	const auto data = m_file->read();
	syncJson(data ? data.value() : QJsonObject(), m_diagnostics);

	if (m_diagnostics != oldDiagnostics) emit diagnosticsChanged();

	emit treeLoaded(this);
}

void RootNode::saveToFile() {
	m_file->write(toJson());
}

} // namespace ZShell::settings