hswaw/site: wip new layout

Change-Id: I4da3a668429dee42c7292accb9e24b93703f1538
diff --git a/hswaw/site/events.go b/hswaw/site/events.go
new file mode 100644
index 0000000..26d4866
--- /dev/null
+++ b/hswaw/site/events.go
@@ -0,0 +1,45 @@
+package main
+
+import (
+	"context"
+	"time"
+
+	"code.hackerspace.pl/hscloud/hswaw/site/calendar"
+	"github.com/golang/glog"
+)
+
+func (s *service) eventsWorker(ctx context.Context) {
+	get := func() {
+		events, err := calendar.GetUpcomingEvents(ctx, time.Now())
+		if err != nil {
+			glog.Errorf("Geting events failed: %v", err)
+			return
+		}
+
+		s.eventsMu.Lock()
+		s.events = events
+		s.eventsMu.Unlock()
+	}
+	// Perform initial fetch.
+	get()
+
+	// .. and update very minute.
+	t := time.NewTicker(time.Minute)
+	defer t.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-t.C:
+			get()
+		}
+	}
+}
+
+func (s *service) getEvents() []*calendar.UpcomingEvent {
+	s.eventsMu.RLock()
+	events := s.events
+	s.eventsMu.RUnlock()
+	return events
+}