add fragment store draft doc

now respecting animation timing

src/chat_gui4.cpp

@@ -37,7 +37,7 @@ namespace Components {
 
 } // Components
 
-static float lerp(float a, float b, float t) {
+static constexpr float lerp(float a, float b, float t) {
 	return a + t * (b - a);
 }
 
@@ -121,8 +121,10 @@ ChatGui4::ChatGui4(
 	ConfigModelI& conf,
 	RegistryMessageModel& rmm,
 	Contact3Registry& cr,
-	TextureUploaderI& tu
-) : _conf(conf), _rmm(rmm), _cr(cr), _tal(_cr), _contact_tc(_tal, tu), _msg_tc(_mil, tu), _sip(tu) {
+	TextureUploaderI& tu,
+	ContactTextureCache& contact_tc,
+	MessageTextureCache& msg_tc
+) : _conf(conf), _rmm(rmm), _cr(cr), _contact_tc(contact_tc), _msg_tc(msg_tc), _sip(tu) {
 }
 
 ChatGui4::~ChatGui4(void) {
@@ -136,20 +138,7 @@ ChatGui4::~ChatGui4(void) {
 	//}
 }
 
-void ChatGui4::render(float time_delta) {
-	if (!_cr.storage<Contact::Components::TagAvatarInvalidate>().empty()) { // handle force-reloads for avatars
-		std::vector<Contact3> to_purge;
-		_cr.view<Contact::Components::TagAvatarInvalidate>().each([&to_purge](const Contact3 c) {
-			to_purge.push_back(c);
-		});
-		_cr.remove<Contact::Components::TagAvatarInvalidate>(to_purge.cbegin(), to_purge.cend());
-		_contact_tc.invalidate(to_purge);
-	}
-	// ACTUALLY NOT IF RENDERED, MOVED LOGIC TO ABOVE
-	// it might unload textures, so it needs to be done before rendering
-	_contact_tc.update();
-	_msg_tc.update();
-
+float ChatGui4::render(float time_delta) {
 	_fss.render();
 	_sip.render(time_delta);
 
@@ -627,8 +616,7 @@ void ChatGui4::render(float time_delta) {
 	}
 	ImGui::End();
 
-	_contact_tc.workLoadQueue();
-	_msg_tc.workLoadQueue();
+	return 1000.f; // TODO: higher min fps?
 }
 
 void ChatGui4::sendFilePath(const char* file_path) {
@@ -749,7 +737,11 @@ void ChatGui4::renderMessageBodyFile(Message3Registry& reg, const Message3 e) {
 	) {
 		if (ImGui::Button("save to")) {
 			_fss.requestFile(
-				[](const auto& path) -> bool { return std::filesystem::is_directory(path); },
+				[](std::filesystem::path& path) -> bool {
+					// remove file path
+					path.remove_filename();
+					return std::filesystem::is_directory(path);
+				},
 				[this, &reg, e](const auto& path) {
 					if (reg.valid(e)) { // still valid
 						// TODO: trim file?

src/chat_gui4.hpp

@@ -9,7 +9,8 @@
 #include "./message_image_loader.hpp"
 #include "./file_selector.hpp"
 #include "./send_image_popup.hpp"
-#include "entt/container/dense_map.hpp"
+
+#include <entt/container/dense_map.hpp>
 
 #include <cstdint>
 #include <vector>
@@ -17,15 +18,16 @@
 #include <mutex>
 #include <memory>
 
+using ContactTextureCache = TextureCache<void*, Contact3, ToxAvatarLoader>;
+using MessageTextureCache = TextureCache<void*, Message3Handle, MessageImageLoader>;
+
 class ChatGui4 {
 	ConfigModelI& _conf;
 	RegistryMessageModel& _rmm;
 	Contact3Registry& _cr;
 
-	ToxAvatarLoader _tal;
-	TextureCache<void*, Contact3, ToxAvatarLoader> _contact_tc;
-	MessageImageLoader _mil;
-	TextureCache<void*, Message3Handle, MessageImageLoader> _msg_tc;
+	ContactTextureCache& _contact_tc;
+	MessageTextureCache& _msg_tc;
 
 	FileSelector _fss;
 	SendImagePopup _sip;
@@ -52,12 +54,14 @@ class ChatGui4 {
 			ConfigModelI& conf,
 			RegistryMessageModel& rmm,
 			Contact3Registry& cr,
-			TextureUploaderI& tu
+			TextureUploaderI& tu,
+			ContactTextureCache& contact_tc,
+			MessageTextureCache& msg_tc
 		);
 		~ChatGui4(void);
 
 	public:
-		void render(float time_delta);
+		float render(float time_delta);
 
 	public:
 		bool any_unread {false};

src/file_selector.cpp

@@ -18,7 +18,7 @@ FileSelector::FileSelector(void) {
 }
 
 void FileSelector::requestFile(
-	std::function<bool(const std::filesystem::path& path)>&& is_valid,
+	std::function<bool(std::filesystem::path& path)>&& is_valid,
 	std::function<void(const std::filesystem::path& path)>&& on_choose,
 	std::function<void(void)>&& on_cancel
 ) {
@@ -77,7 +77,9 @@ void FileSelector::render(void) {
 			if (current_path.has_parent_path()) {
 				if (ImGui::TableNextColumn()) {
 					if (ImGui::Selectable("D##..", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
-						_current_file_path = _current_file_path.parent_path();
+						// the first "parent_path()" only removes the filename and the ending "/"
+						_current_file_path = _current_file_path.parent_path().parent_path() / "";
+						//_current_file_path = _current_file_path.remove_filename().parent_path() / "";
 					}
 				}
 

src/file_selector.hpp

@@ -8,7 +8,7 @@ struct FileSelector {
 
 	bool _open_popup {false};
 
-	std::function<bool(const std::filesystem::path& path)> _is_valid = [](auto){ return true; };
+	std::function<bool(std::filesystem::path& path)> _is_valid = [](auto){ return true; };
 	std::function<void(const std::filesystem::path& path)> _on_choose = [](auto){};
 	std::function<void(void)> _on_cancel = [](){};
 
@@ -18,8 +18,9 @@ struct FileSelector {
 		FileSelector(void);
 
 		// TODO: supply hints
+		// HACK: until we supply hints, is_valid can modify
 		void requestFile(
-			std::function<bool(const std::filesystem::path& path)>&& is_valid,
+			std::function<bool(std::filesystem::path& path)>&& is_valid,
 			std::function<void(const std::filesystem::path& path)>&& on_choose,
 			std::function<void(void)>&& on_cancel
 		);

src/fragment_store/README.md

@@ -0,0 +1,72 @@
+# Fragment Store
+
+Fragments are are pieces of information split into Metadata and Data.
+They can be stored seperated or together.
+They can be used as a Transport protocol/logic too.
+
+# Store types
+
+### Object Store
+
+Fragment files are stored with the first 2 hex chars as sub folders:
+eg:
+objects/ (object store root)
+  - 5f/ (first 2hex subfolder)
+    - 4fffffff (the fragment file without the first 2 hexchars)
+
+### Split Object Store
+
+Same as Object Store, but medadata and data stored in seperate files.
+Metadata files have the `.meta` suffix. They also have a filetype specific suffix, like `.json`, `.msgpack` etc.
+
+### Memory Store
+
+Just keeps the Fragments in memory.
+
+
+# File formats
+
+Files can be compressed and encrypted. Since compression needs the data structure to funcion, it is applied before it is encrypted.
+
+### Text Json
+
+Text json only makes sense for metadata if it's neither compressed nor encrypted. (otherwise its binary on disk anyway, so why waste bytes).
+Since the content of data is not looked at, nothing stops you from using text json and ecrypt it, but atleast basic compression is advised.
+
+A Metadata json object has the following keys:
+- `enc` Encryption type of the data, if any
+- `comp` Compression type of the data, if any
+
+## Binary file headers
+
+### Split Metadata
+
+file magic bytes `SOLMET` (6 bytes)
+
+1 byte encryption type (0x00 is none)
+
+1 byte compression type (0x00 is none)
+
+...metadata here...
+
+note that the ecnryption and compression are for the metadata only.
+The metadata itself contains encryption and compression about the data.
+
+### Split Data
+
+(none) all the data is in the metadata file.
+This is mostly to allow direct storage for files in the Fragment store without excessive duplication.
+Keep in mind to not use the actual file name as the data/meta file name.
+
+### Single fragment
+
+file magic bytes `SOLFIL` (6 bytes)
+
+1 byte encryption type (0x00 is none)
+
+1 byte compression type (0x00 is none)
+
+...metadata here...
+
+...data here...
+

src/main.cpp

@@ -178,9 +178,13 @@ int main(int argc, char** argv) {
 				//)
 			//));
 
-			const float min_delay = std::min<float>(
-					screen->nextTick() - time_delta_tick,
-					screen->nextRender() - time_delta_render
+			const float min_delay =
+				std::min<float>(
+					std::min<float>(
+						screen->nextTick() - time_delta_tick,
+						screen->nextRender() - time_delta_render
+					),
+					0.25f // dont sleep too long
 				) * 1000.f;
 
 			if (min_delay > 0.f) {

src/main_screen.cpp

@@ -1,10 +1,13 @@
 #include "./main_screen.hpp"
 
+#include <solanaceae/contact/components.hpp>
+
 #include <imgui/imgui.h>
 
 #include <SDL3/SDL.h>
 
 #include <memory>
+#include <cmath>
 
 MainScreen::MainScreen(SDL_Renderer* renderer_, std::string save_path, std::string save_password, std::vector<std::string> plugins) :
 	renderer(renderer_),
@@ -20,7 +23,11 @@ MainScreen::MainScreen(SDL_Renderer* renderer_, std::string save_path, std::stri
 	mmil(rmm),
 	tam(rmm, cr, conf),
 	sdlrtu(renderer_),
-	cg(conf, rmm, cr, sdlrtu),
+	tal(cr),
+	contact_tc(tal, sdlrtu),
+	mil(),
+	msg_tc(mil, sdlrtu),
+	cg(conf, rmm, cr, sdlrtu, contact_tc, msg_tc),
 	sw(conf),
 	tuiu(tc, conf),
 	tdch(tpi)
@@ -167,7 +174,22 @@ Screen* MainScreen::render(float time_delta, bool&) {
 
 	const float pm_interval = pm.render(time_delta); // render
 
-	cg.render(time_delta); // render
+	// TODO: move this somewhere else!!!
+	// needs both tal and tc <.<
+	if (!cr.storage<Contact::Components::TagAvatarInvalidate>().empty()) { // handle force-reloads for avatars
+		std::vector<Contact3> to_purge;
+		cr.view<Contact::Components::TagAvatarInvalidate>().each([&to_purge](const Contact3 c) {
+			to_purge.push_back(c);
+		});
+		cr.remove<Contact::Components::TagAvatarInvalidate>(to_purge.cbegin(), to_purge.cend());
+		contact_tc.invalidate(to_purge);
+	}
+	// ACTUALLY NOT IF RENDERED, MOVED LOGIC TO ABOVE
+	// it might unload textures, so it needs to be done before rendering
+	const float ctc_interval = contact_tc.update();
+	const float msgtc_interval = msg_tc.update();
+
+	const float cg_interval = cg.render(time_delta); // render
 	sw.render(); // render
 	tuiu.render(); // render
 	tdch.render(); // render
@@ -216,20 +238,136 @@ Screen* MainScreen::render(float time_delta, bool&) {
 		ImGui::ShowDemoWindow();
 	}
 
-	if (
-		_fps_perf_mode > 1 // TODO: magic
-	) {
-		// powersave forces 250ms
-		_render_interval = 1.f/4.f;
-	} else if (
-		_time_since_event > 1.f && ( // 1sec cool down
-			_fps_perf_mode == 1 || // TODO: magic
-			_window_hidden
+	float tc_unfinished_queue_interval;
+	{ // load rendered but not loaded textures
+		bool unfinished_work_queue = contact_tc.workLoadQueue();
+		unfinished_work_queue = unfinished_work_queue || msg_tc.workLoadQueue();
+
+		if (unfinished_work_queue) {
+			tc_unfinished_queue_interval = 0.1f; // so we can get images loaded faster
+		} else {
+			tc_unfinished_queue_interval = 1.f; // TODO: higher min fps?
+		}
+	}
+
+	// calculate interval for next frame
+	// normal:
+	//  - if < 1.5sec since last event
+	//    - min all and clamp(1/60, 1/1)
+	//  - if < 30sec since last event
+	//    - min all (anim + everything else) clamp(1/60, 1/1) (maybe less?)
+	//  - else
+	//    - min without anim and clamp(1/60, 1/1) (maybe more?)
+	// reduced:
+	//  - if < 1sec since last event
+	//    - min all and clamp(1/60, 1/1)
+	//  - if < 10sec since last event
+	//    - min all (anim + everything else) clamp(1/10, 1/1)
+	//  - else
+	//    - min without anim and max clamp(1/10, 1/1)
+	// powersave:
+	//  - if < 0sec since last event
+	//    - (ignored)
+	//  - if < 1sec since last event
+	//    - min all (anim + everything else) clamp(1/8, 1/1)
+	//  - else
+	//    - min without anim and clamp(1/1, 1/1)
+	struct PerfProfileRender {
+		float low_delay_window {1.5f};
+		float low_delay_min {1.f/60.f};
+		float low_delay_max {1.f/60.f};
+
+		float mid_delay_window {30.f};
+		float mid_delay_min {1.f/60.f};
+		float mid_delay_max {1.f/2.f};
+
+		// also when main window hidden
+		float else_delay_min {1.f/60.f};
+		float else_delay_max {1.f/2.f};
+	};
+
+	const static PerfProfileRender normalPerfProfile{
+		//1.5f,		// low_delay_window
+		//1.f/60.f,	// low_delay_min
+		//1.f/60.f,	// low_delay_max
+
+		//30.f,		// mid_delay_window
+		//1.f/60.f,	// mid_delay_min
+		//1.f/2.f,	// mid_delay_max
+
+		//1.f/60.f,	// else_delay_min
+		//1.f/2.f,	// else_delay_max
+	};
+	const static PerfProfileRender reducedPerfProfile{
+		1.f,		// low_delay_window
+		1.f/60.f,	// low_delay_min
+		1.f/30.f,	// low_delay_max
+
+		10.f,		// mid_delay_window
+		1.f/10.f,	// mid_delay_min
+		1.f/4.f,	// mid_delay_max
+
+		1.f/10.f,	// else_delay_min
+		1.f,		// else_delay_max
+	};
+	// TODO: fix powersave by adjusting it in the events handler (make ppr member)
+	const static PerfProfileRender powersavePerfProfile{
+		// no window -> ignore first case
+		0.f,		// low_delay_window
+		1.f,		// low_delay_min
+		1.f,		// low_delay_max
+
+		1.f,		// mid_delay_window
+		1.f/8.f,	// mid_delay_min
+		1.f/4.f,	// mid_delay_max
+
+		1.f,		// else_delay_min
+		1.f,		// else_delay_max
+	};
+
+	const PerfProfileRender& curr_profile =
+		// TODO: magic
+		_fps_perf_mode > 1
+		? powersavePerfProfile
+		: (
+			_fps_perf_mode == 1
+			? reducedPerfProfile
+			: normalPerfProfile
 		)
-	) {
-		_render_interval = std::min<float>(1.f/4.f, pm_interval);
+	;
+
+	// min over non animations in all cases
+	_render_interval = std::min<float>(pm_interval, cg_interval);
+	_render_interval = std::min<float>(_render_interval, tc_unfinished_queue_interval);
+
+	// low delay time window
+	if (!_window_hidden && _time_since_event < curr_profile.low_delay_window) {
+		_render_interval = std::min<float>(_render_interval, ctc_interval);
+		_render_interval = std::min<float>(_render_interval, msgtc_interval);
+
+		_render_interval = std::clamp(
+			_render_interval,
+			curr_profile.low_delay_min,
+			curr_profile.low_delay_max
+		);
+	// mid delay time window
+	} else if (!_window_hidden && _time_since_event < curr_profile.mid_delay_window) {
+		_render_interval = std::min<float>(_render_interval, ctc_interval);
+		_render_interval = std::min<float>(_render_interval, msgtc_interval);
+
+		_render_interval = std::clamp(
+			_render_interval,
+			curr_profile.mid_delay_min,
+			curr_profile.mid_delay_max
+		);
+	// timed out or window hidden
 	} else {
-		_render_interval = std::min<float>(1.f/60.f, pm_interval);
+		// no animation timing here
+		_render_interval = std::clamp(
+			_render_interval,
+			curr_profile.else_delay_min,
+			curr_profile.else_delay_max
+		);
 	}
 
 	_time_since_event += time_delta;
@@ -253,7 +391,9 @@ Screen* MainScreen::tick(float time_delta, bool& quit) {
 	mts.iterate(); // compute
 
 	_min_tick_interval = std::min<float>(
-		tc.toxIterationInterval()/1000.f,
+		// HACK: pow by 1.6 to increase 50 -> ~500 (~522)
+		// and it does not change 1
+		std::pow(tc.toxIterationInterval(), 1.6f)/1000.f,
 		pm_interval
 	);
 	_min_tick_interval = std::min<float>(
@@ -261,6 +401,8 @@ Screen* MainScreen::tick(float time_delta, bool& quit) {
 		fo_interval
 	);
 
+	//std::cout << "MS: min tick interval: " << _min_tick_interval << "\n";
+
 	switch (_compute_perf_mode) {
 		// normal 1ms lower bound
 		case 0: _min_tick_interval = std::max<float>(_min_tick_interval, 0.001f); break;

src/main_screen.hpp

@@ -21,6 +21,10 @@
 #include "./tox_avatar_manager.hpp"
 
 #include "./sdlrenderer_texture_uploader.hpp"
+#include "./texture_cache.hpp"
+#include "./tox_avatar_loader.hpp"
+#include "./message_image_loader.hpp"
+
 #include "./chat_gui4.hpp"
 #include "./settings_window.hpp"
 #include "./tox_ui_utils.hpp"
@@ -61,6 +65,11 @@ struct MainScreen final : public Screen {
 	SDLRendererTextureUploader sdlrtu;
 	//OpenGLTextureUploader ogltu;
 
+	ToxAvatarLoader tal;
+	TextureCache<void*, Contact3, ToxAvatarLoader> contact_tc;
+	MessageImageLoader mil;
+	TextureCache<void*, Message3Handle, MessageImageLoader> msg_tc;
+
 	ChatGui4 cg;
 	SettingsWindow sw;
 	ToxUIUtils tuiu;
@@ -69,7 +78,7 @@ struct MainScreen final : public Screen {
 	bool _show_tool_style_editor {false};
 
 	bool _window_hidden {false};
-	bool _window_hidden_ts {0};
+	uint64_t _window_hidden_ts {0};
 	float _time_since_event {0.f};
 
 	MainScreen(SDL_Renderer* renderer_, std::string save_path, std::string save_password, std::vector<std::string> plugins);
@@ -85,7 +94,7 @@ struct MainScreen final : public Screen {
 	// 0 - normal
 	// 1 - reduced
 	// 2 - power save
-	int _fps_perf_mode {1};
+	int _fps_perf_mode {0};
 	// 0 - normal
 	// 1 - power save
 	int _compute_perf_mode {0};

src/send_image_popup.hpp

@@ -32,7 +32,7 @@ struct SendImagePopup {
 	Rect crop_rect;
 	Rect crop_before_drag;
 
-	bool cropping {false};
+	bool cropping {true};
 	bool dragging_last_frame_ul {false};
 	bool dragging_last_frame_lr {false};
 

src/texture_cache.cpp

@@ -2,8 +2,9 @@
 
 #include <chrono>
 #include <array>
+#include <limits>
 
-void TextureEntry::doAnimation(const int64_t ts_now) {
+int64_t TextureEntry::doAnimation(const int64_t ts_now) {
 	if (frame_duration.size() > 1) { // is animation
 		do { // why is this loop so ugly
 			const int64_t duration = getDuration();
@@ -11,11 +12,13 @@ void TextureEntry::doAnimation(const int64_t ts_now) {
 				timestamp_last_rendered += duration;
 				next();
 			} else {
-				break;
+				// return ts for next frame
+				return timestamp_last_rendered + duration;
 			}
-		} while(true);
+		} while (true);
 	} else {
 		timestamp_last_rendered = ts_now;
+		return std::numeric_limits<int64_t>::max(); // static image
 	}
 }
 

src/texture_cache.hpp

@@ -50,7 +50,8 @@ struct TextureEntry {
 		current_texture = (current_texture + 1) % frame_duration.size();
 	}
 
-	void doAnimation(const int64_t ts_now);
+	// returns ts for next frame
+	int64_t doAnimation(const int64_t ts_now);
 
 	template<typename TextureType>
 	TextureType getID(void) {
@@ -133,14 +134,16 @@ struct TextureCache {
 		}
 	}
 
-	void update(void) {
+	float update(void) {
 		const uint64_t ts_now = Message::getTimeMS();
+		uint64_t ts_min_next = ts_now + ms_before_purge;
 
 		std::vector<KeyType> to_purge;
 		for (auto&& [key, te] : _cache) {
 			if (te.rendered_this_frame) {
-				te.doAnimation(ts_now);
+				const uint64_t ts_next = te.doAnimation(ts_now);
 				te.rendered_this_frame = false;
+				ts_min_next = std::min(ts_min_next, ts_next);
 			} else if (_cache.size() > min_count_before_purge && ts_now - te.timestamp_last_rendered >= ms_before_purge) {
 				to_purge.push_back(key);
 			}
@@ -148,7 +151,10 @@ struct TextureCache {
 
 		invalidate(to_purge);
 
+		// we ignore the default texture ts :)
 		_default_texture.doAnimation(ts_now);
+
+		return (ts_min_next - ts_now) / 1000.f;
 	}
 
 	void invalidate(const std::vector<KeyType>& to_purge) {
@@ -162,16 +168,22 @@ struct TextureCache {
 		}
 	}
 
-	void workLoadQueue(void) {
-		for (auto it = _to_load.begin(); it != _to_load.end(); it++) {
+	// returns true if there is still work queued up
+	bool workLoadQueue(void) {
+		auto it = _to_load.begin();
+		for (; it != _to_load.end(); it++) {
 			auto new_entry_opt = _l.load(_tu, *it);
 			if (new_entry_opt.has_value()) {
 				_cache.emplace(*it, new_entry_opt.value());
-				_to_load.erase(it);
-				// TODO: not a good idea
+				it = _to_load.erase(it);
+
+				// TODO: not a good idea?
 				break; // end load from queue/onlyload 1 per update
 			}
 		}
+
+		// peak
+		return it != _to_load.end();
 	}
 };
 

src/tox_friend_faux_offline_messaging.cpp

@@ -10,6 +10,8 @@
 #include <limits>
 #include <cstdint>
 
+//#include <iostream>
+
 namespace Message::Components {
 	struct LastSendAttempt {
 		uint64_t ts {0};
@@ -29,15 +31,17 @@ ToxFriendFauxOfflineMessaging::ToxFriendFauxOfflineMessaging(
 	ToxI& t,
 	ToxEventProviderI& tep
 ) : _cr(cr), _rmm(rmm), _tcm(tcm), _t(t), _tep(tep) {
+	_tep.subscribe(this, Tox_Event_Type::TOX_EVENT_FRIEND_CONNECTION_STATUS);
 }
 
 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 -= time_delta;
+	if (_interval_timer > 0.f) {
+		return std::max(_interval_timer, 0.001f); // TODO: min next timer
 	}
-	_interval_timer = 0.f;
+	// interval ~ once per minute
+	_interval_timer = 60.f;
+
 
 	const uint64_t ts_now = Message::getTimeMS();
 
@@ -50,37 +54,47 @@ float ToxFriendFauxOfflineMessaging::tick(float time_delta) {
 			// cleanup
 			if (_cr.all_of<Contact::Components::NextSendAttempt>(c)) {
 				_cr.remove<Contact::Components::NextSendAttempt>(c);
+				auto* mr = static_cast<const RegistryMessageModel&>(_rmm).get(c);
+				if (mr != nullptr) {
+					mr->storage<Message::Components::LastSendAttempt>().clear();
+				}
 			}
 		} 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);
+				if (false) { // has unsent messages
+					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 ret = doFriendMessageCheck(c, tfe);
+				if (ret == dfmc_Ret::SENT_THIS_TICK) {
+					const auto ts = _cr.get<Contact::Components::NextSendAttempt>(c).ts = ts_now + uint64_t(_delay_inbetween*1000);
+					min_next_attempt_ts = std::min(min_next_attempt_ts, ts);
+				} else if (ret == dfmc_Ret::TOO_SOON) {
+					// TODO: set to _delay_inbetween? prob expensive for no good reason
+					min_next_attempt_ts = std::min(min_next_attempt_ts, _cr.get<Contact::Components::NextSendAttempt>(c).ts);
+				} else {
+					_cr.remove<Contact::Components::NextSendAttempt>(c);
 				}
-
-				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;
+		_interval_timer = 0.1f; // TODO: ugly magic
 	} 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);
+		_interval_timer = std::min(_interval_timer, (min_next_attempt_ts - ts_now) / 1000.f);
 	}
+
+	//std::cout << "TFFOM: iterate (i:" << _interval_timer << ")\n";
+
+	return _interval_timer;
 }
 
-bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const Contact::Components::ToxFriendEphemeral& tfe) {
+ToxFriendFauxOfflineMessaging::dfmc_Ret 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)
@@ -88,7 +102,7 @@ bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const
 	auto* mr = static_cast<const RegistryMessageModel&>(_rmm).get(c);
 	if (mr == nullptr) {
 		// no messages
-		return false;
+		return dfmc_Ret::NO_MSG;
 	}
 
 	const uint64_t ts_now = Message::getTimeMS();
@@ -98,6 +112,7 @@ bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const
 	// we assume sorted
 	// ("reverse" iteration <.<)
 	auto msg_view = mr->view<Message::Components::Timestamp>();
+	bool valid_unsent {false};
 	// 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;
@@ -119,6 +134,12 @@ bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const
 			continue; // skip
 		}
 
+		if (mr->get<Message::Components::ContactTo>(msg).c != c) {
+			continue; // not outbound (in private)
+		}
+
+		valid_unsent = true;
+
 		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;
@@ -155,12 +176,17 @@ bool ToxFriendFauxOfflineMessaging::doFriendMessageCheck(const Contact3 c, const
 		} // else error
 
 		// we sent our message, no point further iterating
-		return true;
+		return dfmc_Ret::SENT_THIS_TICK;
 	}
 
-	// TODO: somehow cleanup lsa
+	if (!valid_unsent) {
+		// somehow cleanup lsa
+		mr->storage<Message::Components::LastSendAttempt>().clear();
+		//std::cout << "TFFOM: all sent, deleting lsa\n";
+		return dfmc_Ret::NO_MSG;
+	}
 
-	return false;
+	return dfmc_Ret::TOO_SOON;
 }
 
 bool ToxFriendFauxOfflineMessaging::onToxEvent(const Tox_Event_Friend_Connection_Status* e) {
@@ -180,8 +206,7 @@ bool ToxFriendFauxOfflineMessaging::onToxEvent(const Tox_Event_Friend_Connection
 
 	_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;
+	_interval_timer = 0.f;
 
 	return false;
 }

src/tox_friend_faux_offline_messaging.hpp

@@ -39,10 +39,15 @@ class ToxFriendFauxOfflineMessaging : public ToxEventI {
 		float tick(float time_delta);
 
 	private:
+		enum class dfmc_Ret {
+			TOO_SOON,
+			SENT_THIS_TICK,
+			NO_MSG,
+		};
 		// only called for online friends
 		// returns true if a message was sent
 		// dont call this too often
-		bool doFriendMessageCheck(const Contact3 c, const Contact::Components::ToxFriendEphemeral& tfe);
+		dfmc_Ret doFriendMessageCheck(const Contact3 c, const Contact::Components::ToxFriendEphemeral& tfe);
 
 	protected:
 		bool onToxEvent(const Tox_Event_Friend_Connection_Status* e) override;