feat: add log library

src/lib/seallib/log.h

@@ -0,0 +1,84 @@
+#pragma once
+
+#include <string>
+#include <string_view>
+#include <format>
+#include <memory>
+#include <vector>
+
+namespace seallib
+{
+    enum class LogType
+    {
+        VERBOSE,
+        INFO,
+        WARNING,
+        ERROR
+    };
+
+    inline constexpr std::string_view logTypeNames[]{"VERBOSE", "INFO", "WARNING", "ERROR"};
+    inline constexpr std::string_view logTypeColors[]{"\x1b[34;40m", "\x1b[32;40m", "\x1b[30;43m", "\x1b[97;41m"};
+
+    inline constexpr std::string_view getLogTypeName(LogType type)
+    {
+        return logTypeNames[static_cast<size_t>(type)];
+    }
+
+    inline constexpr std::string_view getLogTypeColor(LogType type)
+    {
+        return logTypeColors[static_cast<size_t>(type)];
+    }
+
+    /*
+            log sink for subscriptions
+        */
+    class ILogSink
+    {
+        public:
+            virtual ~ILogSink() = default;
+            virtual void receiveLog(LogType type, std::string_view loggerName, std::string_view message) = 0;
+    };
+
+    /*
+            logger class
+        */
+    class Logger
+    {
+        public:
+            explicit Logger(std::string_view name) : _name(name) {}
+
+            template <typename... Args> void verbose(std::format_string<Args...> fmt, Args&&... args)
+            {
+                write(LogType::VERBOSE, std::vformat(fmt.get(), std::make_format_args(args...)));
+            }
+
+            template <typename... Args> void info(std::format_string<Args...> fmt, Args&&... args)
+            {
+                write(LogType::INFO, std::vformat(fmt.get(), std::make_format_args(args...)));
+            }
+
+            template <typename... Args> void warning(std::format_string<Args...> fmt, Args&&... args)
+            {
+                write(LogType::WARNING, std::vformat(fmt.get(), std::make_format_args(args...)));
+            }
+
+            template <typename... Args> void error(std::format_string<Args...> fmt, Args&&... args)
+            {
+                write(LogType::ERROR, std::vformat(fmt.get(), std::make_format_args(args...)));
+            }
+
+            [[nodiscard]] std::string_view getName() const { return _name; }
+            void addSink(std::shared_ptr<ILogSink> sink) { _sinks.push_back(std::move(sink)); }
+
+        protected:
+            void write(LogType type, const std::string& message)
+            {
+                for (auto& sink : _sinks)
+                    sink->receiveLog(type, _name, message);
+            }
+
+        private:
+            std::string _name;
+            std::vector<std::shared_ptr<ILogSink>> _sinks;
+    };
+} // namespace seallib