1

internal/logger/logger.go

@@ -0,0 +1,40 @@
+package logger
+
+import (
+	"errors"
+	"log/slog"
+	"os"
+)
+
+const (
+	EnvLocal = "local"
+	EnvDebug = "debug"
+	EnvProd  = "production"
+)
+
+var ErrInvalidLogLevel = errors.New("invalid log level")
+
+func New(env string) (*slog.Logger, error) {
+	switch env {
+	case EnvLocal:
+		return slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
+			AddSource: true,
+			Level:     slog.LevelInfo,
+		})), nil
+
+	case EnvDebug:
+		return slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+			AddSource: false,
+			Level:     slog.LevelDebug,
+		})), nil
+
+	case EnvProd:
+		return slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+			AddSource: false,
+			Level:     slog.LevelError,
+		})), nil
+
+	default:
+		return nil, ErrInvalidLogLevel
+	}
+}