Inital commit. Meisten features sind implementiert und müssen getestet werden

src/thrawn_api.cpp

@@ -0,0 +1,191 @@
+#include "thrawn_api.h"
+#include <iostream>
+#include "Cache.h"
+#include "LuaEngine.h"
+#include "spdlog/spdlog.h"
+
+/*
+	HELPER
+*/
+void push_topic_state_table(lua_State* lua, TopicState state) {
+	lua_newtable(lua);
+	lua_pushliteral(lua, "topic");
+	lua_pushstring(lua, state.topic.c_str());
+	lua_settable(lua, -3);
+
+	lua_pushliteral(lua, "value");
+	lua_pushstring(lua, state.value.c_str());
+	lua_settable(lua, -3);
+}
+
+void push_list_topic_state(lua_State* lua, std::vector<TopicState> states) {
+	lua_newtable(lua);
+
+	int i = 1;
+	for (auto& state : states) {
+		lua_pushinteger(lua, i);
+		push_topic_state_table(lua, state);
+		lua_settable(lua, -3);
+
+		i++;
+	}
+}
+
+//Ab hier ist ok
+int thrawn_log(lua_State* lua)
+{
+	int paramCount = lua_gettop(lua);
+
+	if(paramCount != 1)
+	{
+		return -1;
+	}
+
+	if (!lua_isstring (lua, -1)) {
+		return -1;
+	}
+
+	spdlog::info("[{}] {}", LuaEngine::get_instance().service_by_lua_state(lua)->name, lua_tostring(lua, -1));
+
+	return 0;
+}
+
+int thrawn_register_service(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+
+	if(paramCount != 1)
+	{
+		return -1;
+	}
+
+	LuaEngine::get_instance().service_by_lua_state(lua)->name = lua_tostring(lua, -1);
+
+	spdlog::info("Service '{}' registered", lua_tostring(lua, -1));
+
+	return 0;
+}
+
+int thrawn_create_topic_state(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+
+	if(paramCount < 0 || paramCount > 3)
+	{
+		return -1;
+	}
+
+	TopicState state;
+
+	if (paramCount == 1) {
+		if (!lua_isstring (lua, -1)) {
+			return -1;
+		}
+		state.topic = lua_tostring(lua, -1);
+	}else if (paramCount == 2) {
+		if (!lua_isstring (lua, -2) && !lua_isstring (lua, -1)) {
+			return -1;
+		}
+		state.topic = lua_tostring(lua, -2);
+		state.value = lua_tostring(lua, -1);
+	}
+
+	push_topic_state_table(lua, state);
+
+	return 1;
+}
+
+int thrawn_topic_state_str(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+	
+	if(paramCount != 1)
+	{
+		return -1;
+	}
+
+	std::optional<TopicState> state = TopicState::create_from_lua(lua, -1);
+
+	if (! state.has_value()) {
+		return -1;
+	}
+
+	lua_pushstring(lua, state.value().to_string().c_str());
+
+	return 1;
+}
+
+
+int thrawn_subscribe(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+
+	if(paramCount != 1){
+		return -1;
+	}
+
+	LuaService* service = LuaEngine::get_instance().service_by_lua_state(lua);
+	
+	if (service->name == "") {
+		spdlog::error("Not registered service tried to subscribe to '{}'", lua_tostring(lua, -1));
+
+		return 0;
+	}
+
+	service->subscriptions.push_back(lua_tostring(lua, -1));
+
+	spdlog::info("Service '{}' subscribed to '{}'", service->name, lua_tostring(lua, -1));
+
+	return 0;
+}
+
+int thrawn_topic_cache(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+
+	if(paramCount != 0){
+		return -1;
+	}
+
+	LuaEngine& lua_engine = LuaEngine::get_instance();
+	LuaService* service = lua_engine.service_by_lua_state(lua);
+
+	push_list_topic_state(lua, lua_engine.cache.topic_states(service->subscriptions));
+
+	return 1;	
+}
+// thrawn_publish(topic, value)
+int thrawn_publish(lua_State* lua) {
+	int paramCount = lua_gettop(lua);
+
+	if (paramCount != 1) {
+		return -1;
+	}
+
+    std::optional<TopicState> state = TopicState::create_from_lua(lua, -1);
+
+	if (! state.has_value()) {
+		return -1;
+	}
+
+	LuaEngine::get_instance().publish(state.value());
+
+	return 0;
+}
+
+void call_thrawn_on_start(LuaService& service) {
+	lua_getglobal(service.lua, "thrawn_on_start");
+
+	if (lua_pcall(service.lua,0, 0, 0) != 0) {
+		spdlog::error("[{}] Unable to call 'thrawn_on_start'. [Lua: '{}']", service.name, lua_tostring(service.lua,-1));
+
+		return;
+	}
+}
+
+void call_thrawn_on_update(LuaService& service, TopicState state) {
+	lua_getglobal(service.lua, "thrawn_on_update");
+
+	push_topic_state_table(service.lua, state);
+
+	if (lua_pcall(service.lua, 1, 0, 0) != 0) {
+		spdlog::error("[{}] Unable to call 'thrawn_on_update'. [Lua: '{}']", service.name, lua_tostring(service.lua,-1));
+
+		return;
+	}
+}