feat: logging system

1 files changed, 155 insertions, 0 deletions

diff --git a/src/core/log.cpp b/src/core/log.cpp
new file mode 100644
index 0000000..ec031a5
--- /dev/null
+++ b/src/core/log.cpp
@@ -0,0 +1,155 @@
+#include "log.h"
+#include <filesystem>
+
+#if defined(DONUT_WINDOWS)
+    #include <windows.h>
+#endif
+
+namespace Donut 
+{
+    std::shared_ptr<Logger> Logger::s_logger;
+
+    void Logger::init()
+    {
+        s_logger = std::make_shared<Logger>();
+        s_logger->set_log_level(LogLevel::Info);
+        s_logger->enable_console_output(true);
+        s_logger->enable_file_output(true);
+        s_logger->set_log_file("logs/donut.log");
+        
+        s_logger->log_message(LogLevel::Info, "Logging system initialized");
+    }
+
+    void Logger::shutdown()
+    {
+        if (s_logger)
+            s_logger->log_message(LogLevel::Info, "Shutting down logging system");
+        s_logger.reset();
+    }
+
+    std::shared_ptr<Logger> Logger::get_logger()
+    {
+        return s_logger;
+    }
+
+    Logger::Logger()
+        : m_log_level(LogLevel::Info), 
+          m_console_output(true), 
+          m_file_output(false) { }
+
+    Logger::~Logger() 
+    {
+        if (m_log_file.is_open())
+            m_log_file.close();
+    }
+
+    void Logger::set_log_file(const std::string& filename)
+    {
+        std::filesystem::path log_path(filename);
+        std::filesystem::create_directories(log_path.parent_path());
+        
+        m_log_file.open(filename, std::ios::app);
+        if (!m_log_file.is_open())
+            std::cerr << "Failed to open log file: " << filename << std::endl;
+    }
+
+    std::string Logger::get_time_stamp() 
+    {
+        auto now = std::chrono::system_clock::now();
+        auto time_t = std::chrono::system_clock::to_time_t(now);
+        
+        std::stringstream ss;
+        ss << std::put_time(std::localtime(&time_t), "%Y-%m-%d %H:%M:%S");
+        
+        return ss.str();
+    }
+
+    std::string Logger::get_log_level_string(LogLevel level) 
+    {
+        switch (level) 
+        {
+            case LogLevel::trace: return "TRACE";
+            case LogLevel::Info:  return "INFO";
+            case LogLevel::Warn:  return "WARN";
+            case LogLevel::Err:   return "ERROR";
+            case LogLevel::Fatal: return "FATAL";
+            default:              return "UNKNOWN";
+        }
+    }
+
+    void Logger::set_console_color(LogLevel level) 
+    {
+#if defined(DONUT_WINDOWS)
+        HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
+        WORD color;
+        
+        switch (level) {
+            case LogLevel::trace:
+                color = FOREGROUND_RED   |
+                        FOREGROUND_GREEN | 
+                        FOREGROUND_BLUE;
+                break;
+            case LogLevel::Info:
+                color = FOREGROUND_GREEN | 
+                        FOREGROUND_INTENSITY;
+                break;
+            case LogLevel::Warn:
+                color = FOREGROUND_RED   | 
+                        FOREGROUND_GREEN | 
+                        FOREGROUND_INTENSITY;
+                break;
+            case LogLevel::Err:
+                color = FOREGROUND_RED | 
+                        FOREGROUND_INTENSITY;
+                break;
+            case LogLevel::Fatal:
+                color = FOREGROUND_RED  | 
+                        FOREGROUND_BLUE | 
+                        FOREGROUND_INTENSITY;
+                break;
+            default:
+                color = FOREGROUND_RED   | 
+                        FOREGROUND_GREEN | 
+                        FOREGROUND_BLUE;
+                break;
+        }
+        
+        SetConsoleTextAttribute(h_console, color);
+#else
+        const char* color_code;
+        switch (level) {
+            case LogLevel::trace:
+                color_code = "\033[37m";
+                break;
+            case LogLevel::Info:
+                color_code = "\033[32;1m";
+                break;
+            case LogLevel::Warn:
+                color_code = "\033[33;1m";
+                break;
+            case LogLevel::Err:
+                color_code = "\033[31;1m";
+                break;
+            case LogLevel::Fatal:
+                color_code = "\033[35;1m";
+                break;
+            default:
+                color_code = "\033[37m";
+                break;
+        }
+        std::cout << color_code;
+#endif
+    }
+
+    void Logger::reset_console_color() 
+    {
+#if defined(DONUT_WINDOWS)
+        HANDLE h_console = GetStdHandle(STD_OUTPUT_HANDLE);
+        SetConsoleTextAttribute(h_console, FOREGROUND_RED   | 
+                                          FOREGROUND_GREEN | 
+                                          FOREGROUND_BLUE);
+#else
+        std::cout << "\033[0m";
+#endif
+    }
+}