add tox friend faux offline message (still wonky) + small file copy error handling

src/tox_friend_faux_offline_messaging.cpp

@@ -0,0 +1,188 @@
+#include "./tox_friend_faux_offline_messaging.hpp"
+
+#include <solanaceae/toxcore/tox_interface.hpp>
+
+#include <solanaceae/contact/components.hpp>
+#include <solanaceae/tox_contacts/components.hpp>
+#include <solanaceae/message3/components.hpp>
+#include <solanaceae/tox_messages/components.hpp>
+
+#include <limits>
+#include <cstdint>
+
+namespace Message::Components {
+	struct LastSendAttempt {
+		uint64_t ts {0};
+	};
+} // Message::Components
+
+namespace Contact::Components {
+	struct NextSendAttempt {
+		uint64_t ts {0};
+	};
+} // Contact::Components
+
+ToxFriendFauxOfflineMessaging::ToxFriendFauxOfflineMessaging(
+	Contact3Registry& cr,
+	RegistryMessageModel& rmm,
+	ToxContactModel2& tcm,
+	ToxI& t,
+	ToxEventProviderI& tep
+) : _cr(cr), _rmm(rmm), _tcm(tcm), _t(t), _tep(tep) {
+}
+
+float ToxFriendFauxOfflineMessaging::tick(float time_delta) {
+	// hard limit interval to once per minute
+	_interval_timer += time_delta;
+	if (_interval_timer < 1.f * 60.f) {
+		return std::max(60.f - _interval_timer, 0.001f); // TODO: min next timer
+	}
+	_interval_timer = 0.f;
+
+	const uint64_t ts_now = Message::getTimeMS();
+
+	// check ALL
+	// for each online tox friend
+	uint64_t min_next_attempt_ts {std::numeric_limits<uint64_t>::max()};
+	_cr.view<Contact::Components::ToxFriendEphemeral, Contact::Components::ConnectionState>()
+	.each([this, &min_next_attempt_ts, ts_now](const Contact3 c, const auto& tfe, const auto& cs) {
+		if (cs.state == Contact::Components::ConnectionState::disconnected) {
+			// cleanup
+			if (_cr.all_of<Contact::Components::NextSendAttempt>(c)) {
+				_cr.remove<Contact::Components::NextSendAttempt>(c);
+			}
+		} else {
+			if (!_cr.all_of<Contact::Components::NextSendAttempt>(c)) {
+				const auto& nsa = _cr.emplace<Contact::Components::NextSendAttempt>(c, ts_now + uint64_t(_delay_after_cc*1000)); // wait before first message is sent
+				min_next_attempt_ts = std::min(min_next_attempt_ts, nsa.ts);
+			} else {
+				auto& next_attempt = _cr.get<Contact::Components::NextSendAttempt>(c).ts;
+
+				if (doFriendMessageCheck(c, tfe)) {
+					next_attempt = ts_now + uint64_t(_delay_inbetween*1000);
+				}
+
+				min_next_attempt_ts = std::min(min_next_attempt_ts, next_attempt);
+			}
+		}
+	});
+
+	if (min_next_attempt_ts <= ts_now) {
+		// we (probably) sent this iterate
+		_interval_timer = 60.f - 0.1f; // TODO: ugly magic
+		return 0.1f;
+	} else if (min_next_attempt_ts == std::numeric_limits<uint64_t>::max()) {
+		// nothing to sync or all offline that need syncing
+		return 60.f; // TODO: ugly magic
+	} else {
+		// TODO: ugly magic
+		return _interval_timer = 60.f - std::min(60.f, (min_next_attempt_ts - ts_now) / 1000.f);
+	}
+}
+
+bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const Contact::Components::ToxFriendEphemeral& tfe) {
+	// walk all messages and check if
+	// unacked message
+	// timeouts for exising unacked messages expired (send)
+
+	auto* mr = static_cast<const RegistryMessageModel&>(_rmm).get(c);
+	if (mr == nullptr) {
+		// no messages
+		return false;
+	}
+
+	const uint64_t ts_now = Message::getTimeMS();
+
+	// filter for unconfirmed messages
+
+	// we assume sorted
+	// ("reverse" iteration <.<)
+	auto msg_view = mr->view<Message::Components::Timestamp>();
+	// we search for the oldest, not too recently sent, unconfirmed message
+	for (auto it = msg_view.rbegin(), view_end = msg_view.rend(); it != view_end; it++) {
+		const Message3 msg = *it;
+
+		// require
+		if (!mr->all_of<
+				Message::Components::MessageText, // text only for now
+				Message::Components::ContactTo
+			>(msg)
+		) {
+			continue; // skip
+		}
+
+		// exclude
+		if (mr->any_of<
+				Message::Components::Remote::TimestampReceived // this acts like a tag, which is wrong in groups
+			>(msg)
+		) {
+			continue; // skip
+		}
+
+		uint64_t msg_ts = msg_view.get<Message::Components::Timestamp>(msg).ts;
+		if (mr->all_of<Message::Components::TimestampWritten>(msg)) {
+			msg_ts = mr->get<Message::Components::TimestampWritten>(msg).ts;
+		}
+		if (mr->all_of<Message::Components::LastSendAttempt>(msg)) {
+			const auto lsa = mr->get<Message::Components::LastSendAttempt>(msg).ts;
+			if (lsa > msg_ts) {
+				msg_ts = lsa;
+			}
+		}
+
+		if (ts_now < (msg_ts + uint64_t(_delay_retry * 1000))) {
+			// not time yet
+			continue;
+		}
+
+		// it is time
+		const auto [msg_id, _] = _t.toxFriendSendMessage(
+			tfe.friend_number,
+			(
+				mr->all_of<Message::Components::TagMessageIsAction>(msg)
+					? Tox_Message_Type::TOX_MESSAGE_TYPE_ACTION
+					: Tox_Message_Type::TOX_MESSAGE_TYPE_NORMAL
+			),
+			mr->get<Message::Components::MessageText>(msg).text
+		);
+
+		// TODO: this is ugly
+		mr->emplace_or_replace<Message::Components::LastSendAttempt>(msg, ts_now);
+
+		if (msg_id.has_value()) {
+			// tmm will pick this up for us
+			mr->emplace_or_replace<Message::Components::ToxFriendMessageID>(msg, msg_id.value());
+		} // else error
+
+		// we sent our message, no point further iterating
+		return true;
+	}
+
+	// TODO: somehow cleanup lsa
+
+	return false;
+}
+
+bool ToxFriendFauxOfflineMessaging::onToxEvent(const Tox_Event_Friend_Connection_Status* e) {
+	const auto friend_number = tox_event_friend_connection_status_get_friend_number(e);
+	const auto friend_status = tox_event_friend_connection_status_get_connection_status(e);
+
+	if (friend_status == Tox_Connection::TOX_CONNECTION_NONE) {
+		return false; // skip
+		// maybe cleanup?
+	}
+
+	auto c = _tcm.getContactFriend(friend_number);
+	if (!static_cast<bool>(c) || !c.all_of<Contact::Components::ToxFriendEphemeral, Contact::Components::ConnectionState>()) {
+		// UH error??
+		return false;
+	}
+
+	_cr.emplace_or_replace<Contact::Components::NextSendAttempt>(c, Message::getTimeMS() + uint64_t(_delay_after_cc*1000)); // wait before first message is sent
+
+	// TODO: ugly magic
+	_interval_timer = 60.f - 0.1f;
+
+	return false;
+}
+