scaffold some common services

common/config/ConfigService.hpp

@@ -0,0 +1,56 @@
+
+#pragma once
+
+#include <libconfig.h++>
+
+#include <optional>
+#include <string>
+#include <vector>
+#include <iostream>
+#include <unordered_map>
+
+#include "common/config/IConfig.hpp"
+
+// TODO: would be cool for the config file to include other config files so theyre a bit more compartmentalized
+// then the main file will be like a hub and would be more like each component having its own config file
+class ConfigService {
+
+public:
+
+    ConfigService(const std::string& filePath);
+    ~ConfigService() = default;
+
+    bool loadFromFile(const std::string& filePath);
+
+    template<typename Config>
+    bool getConfig(const std::string& type, const std::string& id, typename Config::Params* params) const {
+
+        Config config { params };
+
+        try {
+            const libconfig::Setting& configs = config_.lookup(type);
+            for (int index = 0; index < configs.getLength(); ++index) {
+                const libconfig::Setting& configSetting = configs[index];
+
+                std::string configId;
+                if (!configSetting.lookupValue("Id", configId) || configId != id) {
+                    continue;
+                }
+
+                return config.parseConfig(configSetting);
+            }
+        } catch (const libconfig::SettingException& ex) {
+            std::cout << "libconfig setting exception: " << ex.what() << std::endl;
+            return false;
+        }
+
+        return false;
+    }
+
+    const std::string& lastError() const;
+
+private:
+
+    libconfig::Config config_;
+    std::string lastError_;
+};