Add --open support for live flamegraph browser launch

2 files changed, 32 insertions, 0 deletions

diff --git a/internal/flags/flags.go b/internal/flags/flags.go
index bf348c7..c4ee7d2 100644
--- a/internal/flags/flags.go
+++ b/internal/flags/flags.go
@@ -65,6 +65,8 @@ type Flags struct {
 	FlamegraphEnable bool
 	LiveFlamegraph   bool
 	LiveInterval     time.Duration
+	OpenLiveBrowser  bool
+	OpenCommand      string
 	FlamegraphName   string
 	TUIExportEnable  bool
 
@@ -122,6 +124,8 @@ func parse() error {
 	flag.BoolVar(&singleton.FlamegraphEnable, "flamegraph", false, "Enable flamegraph builder")
 	flag.BoolVar(&singleton.LiveFlamegraph, "live", false, "Enable live flamegraph mode")
 	flag.DurationVar(&singleton.LiveInterval, "live-interval", 200*time.Millisecond, "Live flamegraph refresh interval")
+	flag.BoolVar(&singleton.OpenLiveBrowser, "open", false, "Auto-open live flamegraph URL in a browser (used with -live)")
+	flag.StringVar(&singleton.OpenCommand, "open-cmd", "", "Custom command to open live flamegraph URL; use {url} placeholder or URL is appended")
 	flag.StringVar(&singleton.FlamegraphName, "name", "default", "Name of the flamegraph, used to generate the SVG file")
 	flag.BoolVar(&singleton.TUIExportEnable, "tuiExport", true, "Enable writing TUI snapshot export files")
 
diff --git a/internal/flags/flags_test.go b/internal/flags/flags_test.go
index a4feb5d..3fa74c6 100644
--- a/internal/flags/flags_test.go
+++ b/internal/flags/flags_test.go
@@ -69,6 +69,12 @@ func TestParseLiveFlagsAndInterval(t *testing.T) {
 	if got := int(pidFilter.Load()); got != 1234 {
 		t.Fatalf("global pid filter = %d, want 1234", got)
 	}
+	if cfg.OpenLiveBrowser {
+		t.Fatalf("expected open-live disabled by default")
+	}
+	if cfg.OpenCommand != "" {
+		t.Fatalf("expected empty open command by default")
+	}
 }
 
 func TestParseLiveDefaults(t *testing.T) {
@@ -83,6 +89,28 @@ func TestParseLiveDefaults(t *testing.T) {
 	if cfg.LiveInterval != 200*time.Millisecond {
 		t.Fatalf("default live interval = %v, want %v", cfg.LiveInterval, 200*time.Millisecond)
 	}
+	if cfg.OpenLiveBrowser {
+		t.Fatalf("expected open-live disabled by default")
+	}
+	if cfg.OpenCommand != "" {
+		t.Fatalf("expected empty open command by default")
+	}
+}
+
+func TestParseOpenFlags(t *testing.T) {
+	cfg, err := parseForTest(t, "-live", "-open", "-open-cmd", "chromium --new-window")
+	if err != nil {
+		t.Fatalf("parse returned error: %v", err)
+	}
+	if !cfg.LiveFlamegraph {
+		t.Fatalf("expected live mode enabled")
+	}
+	if !cfg.OpenLiveBrowser {
+		t.Fatalf("expected -open to enable live browser open")
+	}
+	if cfg.OpenCommand != "chromium --new-window" {
+		t.Fatalf("open command = %q, want %q", cfg.OpenCommand, "chromium --new-window")
+	}
 }
 
 func TestParseDefaultCollapsedFieldsOrder(t *testing.T) {