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C++

// This Source Code Form is subject to the terms of the Mozilla Public
// License, version 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#pragma once
#include <chrono>
#include <optional>
#include <stdexcept>
#include <string>
#include "node.hh"
#pragma GCC visibility push(default)
#include "ns.hh"
#pragma GCC visibility pop
namespace xml {
/* Last User Interaction in Presence */
class xep0319 : virtual public node {
private:
tl::optional<tl::optional<std::chrono::system_clock::time_point>> _idle_since;
public:
tl::optional<std::chrono::system_clock::time_point> idle_since() {
if (!_idle_since)
{
auto children = get_children<urn::xmpp::idle::_1>("idle");
if (children.size() <= 0)
_idle_since.emplace(tl::nullopt);
else {
auto since = children.front().get().get_attr("since");
if (!since)
_idle_since.emplace(tl::nullopt);
else {
try {
_idle_since = get_time(*since);
}
catch (const std::invalid_argument& ex) {
_idle_since.emplace(tl::nullopt);
}
}
}
}
return *_idle_since;
}
};
}