feat(events): listener Docker events (F-002) — auto-refresh daftar + panel Aktivitas beranda hidup

internal/app/events.go

@@ -0,0 +1,94 @@
+package app
+
+import (
+	"context"
+	"strings"
+	"time"
+
+	tea "charm.land/bubbletea/v2"
+
+	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/docker"
+	"gitea.oxpoe.qzz.io/oxpoe/tia-love/internal/i18n"
+)
+
+// eventMsg — satu event Docker dari stream (volume rendah; 1 event = 1 render).
+type eventMsg struct {
+	id int64
+	ev docker.Event
+}
+type eventsClosedMsg struct{ id int64 }
+type eventsRetryMsg struct{ id int64 }
+type refreshTickMsg struct{ gen int64 }
+
+const (
+	activityMax      = 20
+	refreshDebounce  = 500 * time.Millisecond
+	eventsRetryDelay = 5 * time.Second
+)
+
+// startEvents — (re)buka stream event daemon. Dipanggil dari New (init), `r`,
+// dan retry otomatis saat koneksi putus.
+func (m *Model) startEvents() tea.Cmd {
+	if m.eventsCancel != nil {
+		m.eventsCancel()
+		m.eventsCancel = nil
+	}
+	m.eventsCh = nil
+	if m.cl == nil {
+		return nil
+	}
+	m.eventsID++
+	ctx, cancel := context.WithCancel(context.Background())
+	m.eventsCancel = cancel
+	m.eventsCh = m.cl.StreamEvents(ctx)
+	return waitEvent(m.eventsID, m.eventsCh)
+}
+
+func waitEvent(id int64, ch <-chan docker.Event) tea.Cmd {
+	return func() tea.Msg {
+		ev, ok := <-ch
+		if !ok {
+			return eventsClosedMsg{id: id}
+		}
+		return eventMsg{id: id, ev: ev}
+	}
+}
+
+func refreshAfter(gen int64) tea.Cmd {
+	return tea.Tick(refreshDebounce, func(time.Time) tea.Msg { return refreshTickMsg{gen: gen} })
+}
+
+func eventsRetry(id int64) tea.Cmd {
+	return tea.Tick(eventsRetryDelay, func(time.Time) tea.Msg { return eventsRetryMsg{id: id} })
+}
+
+// evTypeKey — jenis event → kunci katalog bagian (untuk label terjemahan).
+func evTypeKey(t string) string {
+	switch t {
+	case "image":
+		return "images"
+	case "volume":
+		return "volumes"
+	case "network":
+		return "networks"
+	default:
+		return "containers"
+	}
+}
+
+// activityLines — event terbaru di atas (untuk panel Aktivitas di beranda).
+func (m Model) activityLines(w, h int) []string {
+	if len(m.activity) == 0 {
+		return []string{dim(i18n.T("activity.waiting"))}
+	}
+	out := make([]string, 0, h)
+	for i := len(m.activity) - 1; i >= 0 && len(out) < h; i-- {
+		ev := m.activity[i]
+		label := strings.ToLower(i18n.T("section." + evTypeKey(ev.Type)))
+		out = append(out, dim(ev.At.Format("15:04:05"))+" "+
+			dim("["+label+"]")+" "+
+			text("'"+truncate(ev.Actor, 20)+"'")+" "+
+			dim(truncate(ev.Action, 24)))
+	}
+	return out
+}