improved logging for debug

cmd/any2anexoj-cli/main.go

@@ -21,6 +21,7 @@ var (
 	// remove/change default
 	platform = pflag.StringP("platform", "p", "trading212", "One of the supported platforms")
 	lang     = pflag.StringP("language", "l", language.Portuguese.String(), "The 2 letter language code")
+	debug    = pflag.BoolP("debug", "d", false, "Activate to log debug messages")
 	ofAPIKey = pflag.String("open-figi-api-key", "", "An OpenFIGI API key for faster report generation (better rate api rate limits)")
 	// TODO: improve documentation on selectors
 	selectors = pflag.StringSlice("selectors", nil, "Only process entries that conform to all the selectors:")
@@ -42,7 +43,11 @@ func run(ctx context.Context) error {
 
 	eg, ctx := errgroup.WithContext(ctx)
 
-	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stderr, nil)))
+	logLevel := slog.LevelInfo
+	if *debug {
+		logLevel = slog.LevelDebug
+	}
+	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: logLevel})))
 
 	if platform == nil || len(*platform) == 0 {
 		slog.Error("--platform flag is required")