make application with base logic

internal/common/config/log.go

@@ -0,0 +1,55 @@
+package config
+
+import (
+	"log/slog"
+	"os"
+)
+
+type LogFormat uint8
+
+const (
+	LogFormatText LogFormat = iota
+	LogFormatJSON
+)
+
+type LogLevel uint8
+
+const (
+	LogLevelDebug LogLevel = iota
+	LogLevelInfo
+	LogLevelWarn
+	LogLevelError
+)
+
+type LogConfig struct {
+	Level  LogLevel
+	Format LogFormat
+}
+
+func NewSLogger(config LogConfig) *slog.Logger {
+	var level slog.Level
+	switch config.Level {
+	case LogLevelDebug:
+		level = slog.LevelDebug
+	case LogLevelInfo:
+		level = slog.LevelInfo
+	case LogLevelWarn:
+		level = slog.LevelWarn
+	case LogLevelError:
+		level = slog.LevelError
+	}
+
+	opts := &slog.HandlerOptions{
+		Level: level,
+	}
+
+	var h slog.Handler
+	switch config.Format {
+	case LogFormatJSON:
+		h = slog.NewJSONHandler(os.Stdout, opts)
+	case LogFormatText:
+		h = slog.NewTextHandler(os.Stdout, opts)
+	}
+
+	return slog.New(h)
+}