chore: move the go code into a subfolder

apps/api/internal/command/instance_model.go

@@ -0,0 +1,92 @@
+package command
+
+import (
+	"golang.org/x/text/language"
+
+	"github.com/zitadel/zitadel/internal/domain"
+	"github.com/zitadel/zitadel/internal/eventstore"
+	"github.com/zitadel/zitadel/internal/repository/instance"
+)
+
+type InstanceWriteModel struct {
+	eventstore.WriteModel
+
+	Name            string
+	State           domain.InstanceState
+	GeneratedDomain string
+	Domains         []string
+
+	DefaultOrgID    string
+	ProjectID       string
+	DefaultLanguage language.Tag
+}
+
+func NewInstanceWriteModel(instanceID string) *InstanceWriteModel {
+	return &InstanceWriteModel{
+		WriteModel: eventstore.WriteModel{
+			InstanceID:    instanceID,
+			AggregateID:   instanceID,
+			ResourceOwner: instanceID,
+		},
+	}
+}
+
+func (wm *InstanceWriteModel) Reduce() error {
+	for _, event := range wm.Events {
+		switch e := event.(type) {
+		case *instance.InstanceAddedEvent:
+			wm.Name = e.Name
+			wm.State = domain.InstanceStateActive
+		case *instance.InstanceChangedEvent:
+			wm.Name = e.Name
+		case *instance.InstanceRemovedEvent:
+			wm.State = domain.InstanceStateRemoved
+		case *instance.DomainAddedEvent:
+			if e.Generated {
+				wm.GeneratedDomain = e.Domain
+			}
+			wm.Domains = append(wm.Domains, e.Domain)
+		case *instance.DomainRemovedEvent:
+			for _, customDomain := range wm.Domains {
+				if customDomain == e.Domain {
+					wm.Domains = removeDomainFromDomains(wm.Domains, e.Domain)
+				}
+			}
+		case *instance.ProjectSetEvent:
+			wm.ProjectID = e.ProjectID
+		case *instance.DefaultOrgSetEvent:
+			wm.DefaultOrgID = e.OrgID
+		case *instance.DefaultLanguageSetEvent:
+			wm.DefaultLanguage = e.Language
+		}
+	}
+	return wm.WriteModel.Reduce()
+}
+
+func (wm *InstanceWriteModel) Query() *eventstore.SearchQueryBuilder {
+	return eventstore.NewSearchQueryBuilder(eventstore.ColumnsEvent).
+		ResourceOwner(wm.ResourceOwner).
+		AddQuery().
+		AggregateTypes(instance.AggregateType).
+		AggregateIDs(wm.AggregateID).
+		EventTypes(
+			instance.InstanceAddedEventType,
+			instance.InstanceChangedEventType,
+			instance.InstanceRemovedEventType,
+			instance.InstanceDomainAddedEventType,
+			instance.InstanceDomainRemovedEventType,
+			instance.ProjectSetEventType,
+			instance.DefaultOrgSetEventType,
+			instance.DefaultLanguageSetEventType).
+		Builder()
+}
+
+func InstanceAggregateFromWriteModel(wm *eventstore.WriteModel) *eventstore.Aggregate {
+	return &eventstore.Aggregate{
+		ID:            wm.AggregateID,
+		Type:          instance.AggregateType,
+		ResourceOwner: wm.ResourceOwner,
+		InstanceID:    wm.InstanceID,
+		Version:       instance.AggregateVersion,
+	}
+}