first commit

src/Services/ConfigService.h

@@ -0,0 +1,76 @@
+#pragma once
+
+#include <string>
+#include <memory>
+#include <mutex>
+#include <nlohmann/json.hpp>
+#include <filesystem>
+#include <fstream>
+#include <sstream>
+
+namespace snoop {
+
+class Config {
+public:
+    std::string m_guid;
+    unsigned long long m_recordingDuration = 0;
+    std::string m_baseUrl;
+};
+
+NLOHMANN_DEFINE_TYPE_NON_INTRUSIVE_WITH_DEFAULT( Config, m_guid, m_recordingDuration, m_baseUrl )
+
+class ConfigService {
+    std::shared_ptr<Config> m_config;
+    std::string m_configFilePath;
+    std::mutex m_mutex;
+
+public:
+    explicit ConfigService( const std::string& configFilePath ) :
+        m_configFilePath( configFilePath ) {
+        if( !std::filesystem::exists( this->m_configFilePath ) ) {
+            throw std::runtime_error( std::string( "ConfigService: Config not found " ) + this->m_configFilePath );
+        }
+        std::string configFileContent = this->ReadFile( this->m_configFilePath );
+        nlohmann::json jsonConfig = nlohmann::json::parse( configFileContent );
+        this->m_config = std::make_shared<Config>( jsonConfig.get<Config>() );
+    }
+
+    [[nodiscard]] std::string GetGuid() const {
+        return this->m_config->m_guid;
+    }
+
+    [[nodiscard]] unsigned long long int GetRecordingDuration() const {
+        return this->m_config->m_recordingDuration;
+    }
+
+    void SetRecordingDuration( unsigned long long int recordingDuration ) {
+        this->m_config->m_recordingDuration = recordingDuration;
+        this->RewriteConfig();
+    }
+
+    [[nodiscard]] std::string GetBaseUrl() const {
+        return this->m_config->m_baseUrl;
+    }
+
+private:
+    std::string ReadFile( const std::string& path ) {
+        std::fstream f;
+        f.open( path, std::ios::in );
+        std::stringstream ss;
+        ss << f.rdbuf();
+        return ss.str();
+    }
+
+    void RewriteFile( const std::string& path, const std::string& fileContent ) {
+        std::fstream f;
+        f.open( path, std::ios::out );
+        f << fileContent;
+        f.close();
+    }
+
+    void RewriteConfig() {
+        this->RewriteFile( this->m_configFilePath, nlohmann::json( *this->m_config ).dump() );
+    }
+};
+
+}