feat: some refactoring

internal/apiserver/logger/logger.go

@@ -0,0 +1,76 @@
+package logger
+
+import (
+	"sync"
+
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	logger      *logrus.Logger
+	once        sync.Once
+	initialized bool
+)
+
+// Initialize logger with configuration
+func Initialize(level string, format string, output string) {
+	once.Do(func() {
+		logger = logrus.New()
+
+		// Set level
+		lvl, err := logrus.ParseLevel(level)
+		if err != nil {
+			lvl = logrus.InfoLevel
+		}
+		logger.SetLevel(lvl)
+
+		// Set format
+		switch format {
+		case "json":
+			logger.SetFormatter(&logrus.JSONFormatter{
+				TimestampFormat: "2006-01-02T15:04:05.000Z",
+			})
+		case "text":
+			logger.SetFormatter(&logrus.TextFormatter{
+				TimestampFormat: "2006-01-02 15:04:05",
+				FullTimestamp:   true,
+			})
+		}
+
+		// Set output
+		if output != "" {
+			//TODO: Use files
+		}
+
+		initialized = true
+	})
+}
+
+// GetLogger returns the singleton logger instance
+func GetLogger() *logrus.Logger {
+	if !initialized {
+		// Initialize with defaults
+		Initialize("info", "json", "stdout")
+	}
+	return logger
+}
+
+// WithFields creates a logger with additional fields
+func WithFields(fields map[string]interface{}) *logrus.Entry {
+	return GetLogger().WithFields(fields)
+}
+
+// Info logs an info message
+func Info(msg string) {
+	GetLogger().Info(msg)
+}
+
+// Error logs an error message
+func Error(msg string) {
+	GetLogger().Error(msg)
+}
+
+// Debug logs a debug message
+func Debug(msg string) {
+	GetLogger().Debug(msg)
+}