fix: dns resolution taking long and add caching options (#8)

cmd/top.go

@@ -6,16 +6,15 @@ import (
 
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/karol-broda/snitch/internal/config"
+	"github.com/karol-broda/snitch/internal/resolver"
 	"github.com/karol-broda/snitch/internal/tui"
 	"github.com/spf13/cobra"
 )
 
 // top-specific flags
 var (
-	topTheme        string
-	topInterval     time.Duration
-	topResolveAddrs bool
-	topResolvePorts bool
+	topTheme    string
+	topInterval time.Duration
 )
 
 var topCmd = &cobra.Command{
@@ -29,11 +28,16 @@ var topCmd = &cobra.Command{
 			theme = cfg.Defaults.Theme
 		}
 
+		// configure resolver with cache setting
+		effectiveNoCache := noCache || !cfg.Defaults.DNSCache
+		resolver.SetNoCache(effectiveNoCache)
+
 		opts := tui.Options{
 			Theme:        theme,
 			Interval:     topInterval,
-			ResolveAddrs: topResolveAddrs,
-			ResolvePorts: topResolvePorts,
+			ResolveAddrs: resolveAddrs,
+			ResolvePorts: resolvePorts,
+			NoCache:      effectiveNoCache,
 		}
 
 		// if any filter flag is set, use exclusive mode
@@ -62,9 +66,8 @@ func init() {
 	// top-specific flags
 	topCmd.Flags().StringVar(&topTheme, "theme", cfg.Defaults.Theme, "Theme for TUI (see 'snitch themes')")
 	topCmd.Flags().DurationVarP(&topInterval, "interval", "i", time.Second, "Refresh interval")
-	topCmd.Flags().BoolVar(&topResolveAddrs, "resolve-addrs", !cfg.Defaults.Numeric, "Resolve IP addresses to hostnames")
-	topCmd.Flags().BoolVar(&topResolvePorts, "resolve-ports", false, "Resolve port numbers to service names")
 
-	// shared filter flags
+	// shared flags
 	addFilterFlags(topCmd)
+	addResolutionFlags(topCmd)
 }