chore: move the go code into a subfolder

apps/api/internal/v2/projection/highest_position.go

@@ -0,0 +1,15 @@
+package projection
+
+import (
+	"github.com/zitadel/zitadel/internal/v2/eventstore"
+)
+
+type HighestPosition eventstore.GlobalPosition
+
+var _ eventstore.Reducer = (*HighestPosition)(nil)
+
+// Reduce implements eventstore.Reducer.
+func (h *HighestPosition) Reduce(events ...*eventstore.StorageEvent) error {
+	*h = HighestPosition(events[len(events)-1].Position)
+	return nil
+}

apps/api/internal/v2/projection/org_primary_domain.go

@@ -0,0 +1,57 @@
+package projection
+
+import (
+	"github.com/zitadel/zitadel/internal/v2/eventstore"
+	"github.com/zitadel/zitadel/internal/v2/org"
+)
+
+type OrgPrimaryDomain struct {
+	projection
+
+	id string
+
+	Domain string
+}
+
+func NewOrgPrimaryDomain(id string) *OrgPrimaryDomain {
+	return &OrgPrimaryDomain{
+		id: id,
+	}
+}
+
+func (p *OrgPrimaryDomain) Filter() []*eventstore.Filter {
+	return []*eventstore.Filter{
+		eventstore.NewFilter(
+			eventstore.FilterPagination(
+				eventstore.GlobalPositionGreater(&p.position),
+			),
+			eventstore.AppendAggregateFilter(
+				org.AggregateType,
+				eventstore.AggregateIDs(p.id),
+				eventstore.AppendEvent(
+					eventstore.SetEventTypes(org.DomainPrimarySetType),
+				),
+			),
+		),
+	}
+}
+
+func (p *OrgPrimaryDomain) Reduce(events ...*eventstore.StorageEvent) error {
+	for _, event := range events {
+		if !p.shouldReduce(event) {
+			continue
+		}
+		if event.Type != org.DomainPrimarySetType {
+			continue
+		}
+		e, err := org.DomainPrimarySetEventFromStorage(event)
+		if err != nil {
+			return err
+		}
+
+		p.Domain = e.Payload.Name
+		p.projection.reduce(event)
+	}
+
+	return nil
+}

apps/api/internal/v2/projection/org_state.go

@@ -0,0 +1,67 @@
+package projection
+
+import (
+	"github.com/zitadel/zitadel/internal/v2/eventstore"
+	"github.com/zitadel/zitadel/internal/v2/org"
+)
+
+type OrgState struct {
+	projection
+
+	id string
+
+	org.State
+}
+
+func NewStateProjection(id string) *OrgState {
+	// TODO: check buffer for id and return from buffer if exists
+	return &OrgState{
+		id: id,
+	}
+}
+
+func (p *OrgState) Filter() []*eventstore.Filter {
+	return []*eventstore.Filter{
+		eventstore.NewFilter(
+			eventstore.FilterPagination(
+				eventstore.Descending(),
+				eventstore.GlobalPositionGreater(&p.position),
+			),
+			eventstore.AppendAggregateFilter(
+				org.AggregateType,
+				eventstore.AggregateIDs(p.id),
+				eventstore.AppendEvent(
+					eventstore.SetEventTypes(
+						org.AddedType,
+						org.DeactivatedType,
+						org.ReactivatedType,
+						org.RemovedType,
+					),
+				),
+			),
+		),
+	}
+}
+
+func (p *OrgState) Reduce(events ...*eventstore.StorageEvent) error {
+	for _, event := range events {
+		if !p.shouldReduce(event) {
+			continue
+		}
+
+		switch event.Type {
+		case org.AddedType:
+			p.State = org.ActiveState
+		case org.DeactivatedType:
+			p.State = org.InactiveState
+		case org.ReactivatedType:
+			p.State = org.ActiveState
+		case org.RemovedType:
+			p.State = org.RemovedState
+		default:
+			continue
+		}
+		p.position = event.Position
+	}
+	return nil
+}

apps/api/internal/v2/projection/projection.go

@@ -0,0 +1,20 @@
+package projection
+
+import "github.com/zitadel/zitadel/internal/v2/eventstore"
+
+type projection struct {
+	instance string
+	position eventstore.GlobalPosition
+}
+
+func (p *projection) reduce(event *eventstore.StorageEvent) {
+	if p.instance == "" {
+		p.instance = event.Aggregate.Instance
+	}
+	p.position = event.Position
+}
+
+func (p *projection) shouldReduce(event *eventstore.StorageEvent) bool {
+	shouldReduce := p.instance == "" || p.instance == event.Aggregate.Instance
+	return shouldReduce && p.position.IsLess(event.Position)
+}