fix: creation date argument in search events filters (#6855)

* fix: creation date filter in event queries

* fix: creation date with ordering filter

* simplify code

* simplify review

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/eventstore/search_query.go

@@ -25,6 +25,7 @@ type SearchQueryBuilder struct {
 	positionAfter         float64
 	awaitOpenTransactions bool
 	creationDateAfter     time.Time
+	creationDateBefore    time.Time
 	eventSequenceGreater  uint64
 }
 
@@ -84,6 +85,10 @@ func (q SearchQueryBuilder) GetCreationDateAfter() time.Time {
 	return q.creationDateAfter
 }
 
+func (q SearchQueryBuilder) GetCreationDateBefore() time.Time {
+	return q.creationDateBefore
+}
+
 // ensureInstanceID makes sure that the instance id is always set
 func (b *SearchQueryBuilder) ensureInstanceID(ctx context.Context) {
 	if b.instanceID == nil && authz.GetInstance(ctx).InstanceID() != "" {
@@ -256,6 +261,15 @@ func (builder *SearchQueryBuilder) CreationDateAfter(creationDate time.Time) *Se
 	return builder
 }
 
+// CreationDateBefore filters for events which happened before the specified time
+func (builder *SearchQueryBuilder) CreationDateBefore(creationDate time.Time) *SearchQueryBuilder {
+	if creationDate.IsZero() || creationDate.Unix() == 0 {
+		return builder
+	}
+	builder.creationDateBefore = creationDate
+	return builder
+}
+
 // AddQuery creates a new sub query.
 // All fields in the sub query are AND-connected in the storage request.
 // Multiple sub queries are OR-connected in the storage request.