Inital commit. Meisten features sind implementiert und müssen getestet werden

src/main.cpp

@@ -0,0 +1,111 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include "Service.h"
+#include "thrawn_api.h"
+#include "mqttpp.h"
+#include "spdlog/spdlog.h" 
+#include "Cache.h"
+#include "LuaEngine.h"
+#include <filesystem>
+#include "Version.h"
+#include <cstring>
+
+std::vector<std::string> lua_scripts_in_folder(const std::string& path_str) {
+	std::vector<std::string> scripts;
+
+	std::filesystem::path scripts_folder(path_str);
+	
+	if (std::filesystem::exists(scripts_folder)) {
+		for (const auto& file: std::filesystem::directory_iterator(scripts_folder)) {
+			if (file.is_regular_file() && file.path().extension() == ".lua") {
+				scripts.push_back(file.path().string());
+			}
+		}
+	}else{
+		throw std::invalid_argument("Folder '" + path_str + "' does not exist.");
+	}
+
+	return scripts;
+}
+
+int main(int argc, char* argv[]) {
+	std::string services_path_str = "/etc/thrawn";
+	std::string mqttServerURI = "tcp://chimaera:1883";
+	mqttpp::LastWill last_will {mqttServerURI, "0"};
+	std::string lastWillConnected = "1";
+
+
+	/*
+	* Parsing arguments
+	* Show version or load path
+	*/
+	if (argc > 1) {
+		if (strcmp(argv[1], "-v") == 0 || strcmp(argv[1], "--version") == 0) {
+			std::cout << "Version: " << THRAWN_MAJOR_VERSION << "." << THRAWN_MINOR_VERSION << "." << THRAWN_PATCH_VERSION << std::endl;
+
+			return 0;
+		}
+
+		services_path_str = argv[1];
+	}
+	
+	/*
+	 * MQTT
+	 */
+	spdlog::info("Starting MQTT connection to '{}' .", mqttServerURI);
+
+	mqttpp::Client mqtt(mqttServerURI, last_will);
+
+	if (! mqtt.connect()) {
+		spdlog::error("Failed to establishe mqtt connection to ‘{}'", mqttServerURI);
+
+		return 1;
+	}
+
+	mqtt.publish(last_will.topic, lastWillConnected);
+	mqtt.subscribe("#", [&] (const char* topic, const std::string& msg) {
+		LuaEngine::get_instance().cache.set_topic_value(topic, msg);
+
+		for (auto& service : LuaEngine::get_instance().services) {
+			for (const std::string& sub_topic : service.subscriptions) {
+				if (sub_topic == topic) {
+					service.on_update(TopicState(topic, msg));
+				}
+			}
+		}
+	});
+
+	LuaEngine::get_instance().publish = [&](const TopicState& state) {
+		mqtt.publish(state.topic, state.value);
+	};
+
+	spdlog::info("Connection to MQTT server '{}' successfull.", mqttServerURI);
+
+	try {
+		for (const auto& script : lua_scripts_in_folder(services_path_str)) {
+			LuaEngine::get_instance().create_service(script);
+		}
+	}catch(const std::exception& e) {
+		spdlog::error(e.what());
+
+		return 1;
+	}
+
+	/*
+	 * LUA Engine
+	 */
+	spdlog::info("Starting Thrawn services on Chimaera.");
+
+	LuaEngine::get_instance().load_services();
+
+	spdlog::info("{} service(s) loaded.", LuaEngine::get_instance().services.size());
+	
+	LuaEngine::get_instance().start_services();
+
+	spdlog::info("All services loaded.");
+
+	while (true) {}
+
+	return 0;
+}