feat: implement db provider

include/engine/core/engine.hpp

@@ -1,8 +1,9 @@
 #ifndef __MCS_ENGINE_HPP__
 #define __MCS_ENGINE_HPP__
 
-#include "engine/core/engine_module.hpp"
-#include "engine/core/engine_module_api.hpp"
+#include <engine/core/engine_module.hpp>
+#include <engine/core/engine_module_api.hpp>
+#include <engine/core/engine_db_provider.hpp>
 #include <cstdint>
 #include <memory>
 #include <vector>
@@ -24,6 +25,8 @@ public:
   MscEventBus &getBus() override;
   std::unordered_map<std::string, std::uint16_t> getLoadedModules() const override;
   MscEngineModule &getModule(const std::string &name) override;
+  std::unique_ptr<MscEngineDBProvider> createDBProvider() override;
+  std::unique_ptr<MscEngineDBProvider> createDBProvider(const std::string &filepath) override;
 };
 
 #endif // __MCS_ENGINE_HPP__

include/engine/core/engine_db_provider.hpp

@@ -0,0 +1,30 @@
+#ifndef __MSC_ENGINE_DB_PROVIDER_HPP__
+#define __MSC_ENGINE_DB_PROVIDER_HPP__
+
+#include <sqlite3.h>
+#include <string>
+
+/// @brief Engine database provider
+class MscEngineDBProvider
+{
+public:
+    ~MscEngineDBProvider();
+
+    /// @brief Create inmemory database
+    MscEngineDBProvider();
+
+    /// @brief Create file database
+    explicit MscEngineDBProvider(const std::string &filepath);
+
+    /// @brief Execute SQL statement
+    /// @param sql statement
+    void execute(const std::string &sql);
+
+    MscEngineDBProvider(const MscEngineDBProvider &) = delete;
+    MscEngineDBProvider &operator=(const MscEngineDBProvider &) = delete;
+
+private:
+    sqlite3 *_db = nullptr;
+};
+
+#endif // __MSC_ENGINE_DB_PROVIDER_HPP__

include/engine/core/engine_module_api.hpp

@@ -2,24 +2,33 @@
 #define __MSC_ENGINE_MODULE_API_HPP__
 
 #include <engine/core/engine_bus.hpp>
-#include <engine/core/engine_module.hpp>
+#include <engine/core/engine_db_provider.hpp>
 #include <cstdint>
 #include <string>
 #include <unordered_map>
+#include <memory>
+
+class MscEngineModule;
 
 class IMscEngineModuleAPI
 {
 public:
   virtual ~IMscEngineModuleAPI() = default;
 
-  /// Get access to engine event bus
+  /// @brief Get access to engine event bus
   virtual MscEventBus &getBus() = 0;
 
-  /// Get access to loaded module list
+  /// @brief Get access to loaded module list
   virtual std::unordered_map<std::string, std::uint16_t> getLoadedModules() const = 0;
 
-  /// Access module by its name
+  /// @brief Access module by its name
   virtual MscEngineModule &getModule(const std::string &name) = 0;
+
+  /// @brief Create database provider with in-memory database
+  virtual std::unique_ptr<MscEngineDBProvider> createDBProvider() = 0;
+
+  /// @brief Create database provider with file database
+  virtual std::unique_ptr<MscEngineDBProvider> createDBProvider(const std::string &filepath) = 0;
 };
 
 #endif // __MSC_ENGINE_MODULE_API_HPP__