Map moment destroyed event (#127)

lib/go/events/destroy.go

@@ -0,0 +1,28 @@
+package events
+
+import (
+	"github.com/onflow/cadence"
+	jsoncdc "github.com/onflow/cadence/encoding/json"
+)
+
+var (
+	EventMomentDestroyed = "TopShot.MomentDestroyed"
+)
+
+type MomentDestroyedEvent interface {
+	Id() uint64
+}
+
+type momentDestroyedEvent cadence.Event
+
+func (a momentDestroyedEvent) Id() uint64 {
+	return uint64(a.Fields[0].(cadence.UInt64))
+}
+
+func DecodeMomentDestroyedEvent(b []byte) (MomentDestroyedEvent, error) {
+	value, err := jsoncdc.Decode(b)
+	if err != nil {
+		return nil, err
+	}
+	return momentDestroyedEvent(value.(cadence.Event)), nil
+}