fix: rename iam to instance (#3345)

* fix: rename iam command side to instance

* fix: rename iam command side to instance

* fix: rename iam command side to instance

* fix: rename iam command side to instance

* fix: rename orgiampolicy to domain policy

* fix: merge conflicts

* fix: protos

* fix: md files

* implement deprecated org iam policy again

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

internal/command/org_policy_domain.go

@@ -0,0 +1,112 @@
+package command
+
+import (
+	"context"
+
+	"github.com/caos/zitadel/internal/domain"
+	caos_errs "github.com/caos/zitadel/internal/errors"
+	"github.com/caos/zitadel/internal/eventstore"
+	"github.com/caos/zitadel/internal/repository/org"
+	"github.com/caos/zitadel/internal/telemetry/tracing"
+)
+
+func (c *Commands) AddOrgDomainPolicy(ctx context.Context, resourceOwner string, policy *domain.DomainPolicy) (*domain.DomainPolicy, error) {
+	if resourceOwner == "" {
+		return nil, caos_errs.ThrowInvalidArgument(nil, "Org-4Jfsf", "Errors.ResourceOwnerMissing")
+	}
+	addedPolicy := NewOrgDomainPolicyWriteModel(resourceOwner)
+	orgAgg := OrgAggregateFromWriteModel(&addedPolicy.PolicyDomainWriteModel.WriteModel)
+	event, err := c.addOrgDomainPolicy(ctx, orgAgg, addedPolicy, policy)
+	if err != nil {
+		return nil, err
+	}
+	pushedEvents, err := c.eventstore.Push(ctx, event)
+	if err != nil {
+		return nil, err
+	}
+	err = AppendAndReduce(addedPolicy, pushedEvents...)
+	if err != nil {
+		return nil, err
+	}
+	return orgWriteModelToDomainPolicy(addedPolicy), nil
+}
+
+func (c *Commands) addOrgDomainPolicy(ctx context.Context, orgAgg *eventstore.Aggregate, addedPolicy *OrgDomainPolicyWriteModel, policy *domain.DomainPolicy) (eventstore.Command, error) {
+	err := c.eventstore.FilterToQueryReducer(ctx, addedPolicy)
+	if err != nil {
+		return nil, err
+	}
+	if addedPolicy.State == domain.PolicyStateActive {
+		return nil, caos_errs.ThrowAlreadyExists(nil, "ORG-1M8ds", "Errors.Org.DomainPolicy.AlreadyExists")
+	}
+	return org.NewOrgDomainPolicyAddedEvent(ctx, orgAgg, policy.UserLoginMustBeDomain), nil
+}
+
+func (c *Commands) ChangeOrgDomainPolicy(ctx context.Context, resourceOwner string, policy *domain.DomainPolicy) (*domain.DomainPolicy, error) {
+	if resourceOwner == "" {
+		return nil, caos_errs.ThrowInvalidArgument(nil, "Org-5H8fs", "Errors.ResourceOwnerMissing")
+	}
+	existingPolicy, err := c.orgDomainPolicyWriteModelByID(ctx, resourceOwner)
+	if err != nil {
+		return nil, err
+	}
+	if existingPolicy.State == domain.PolicyStateUnspecified || existingPolicy.State == domain.PolicyStateRemoved {
+		return nil, caos_errs.ThrowNotFound(nil, "ORG-2N9sd", "Errors.Org.DomainPolicy.NotFound")
+	}
+
+	orgAgg := OrgAggregateFromWriteModel(&existingPolicy.PolicyDomainWriteModel.WriteModel)
+	changedEvent, hasChanged := existingPolicy.NewChangedEvent(ctx, orgAgg, policy.UserLoginMustBeDomain)
+	if !hasChanged {
+		return nil, caos_errs.ThrowPreconditionFailed(nil, "ORG-3M9ds", "Errors.Org.LabelPolicy.NotChanged")
+	}
+
+	pushedEvents, err := c.eventstore.Push(ctx, changedEvent)
+	if err != nil {
+		return nil, err
+	}
+	err = AppendAndReduce(existingPolicy, pushedEvents...)
+	if err != nil {
+		return nil, err
+	}
+	return orgWriteModelToDomainPolicy(existingPolicy), nil
+}
+
+func (c *Commands) RemoveOrgDomainPolicy(ctx context.Context, orgID string) error {
+	if orgID == "" {
+		return caos_errs.ThrowInvalidArgument(nil, "Org-3H8fs", "Errors.ResourceOwnerMissing")
+	}
+	existingPolicy, err := c.orgDomainPolicyWriteModelByID(ctx, orgID)
+	if err != nil {
+		return err
+	}
+	if existingPolicy.State == domain.PolicyStateUnspecified || existingPolicy.State == domain.PolicyStateRemoved {
+		return caos_errs.ThrowNotFound(nil, "ORG-Dvsh3", "Errors.Org.OrgIAMPolicy.NotFound")
+	}
+
+	orgAgg := OrgAggregateFromWriteModel(&existingPolicy.PolicyDomainWriteModel.WriteModel)
+	_, err = c.eventstore.Push(ctx, org.NewOrgDomainPolicyRemovedEvent(ctx, orgAgg))
+	return err
+}
+
+func (c *Commands) getOrgDomainPolicy(ctx context.Context, orgID string) (*domain.DomainPolicy, error) {
+	policy, err := c.orgDomainPolicyWriteModelByID(ctx, orgID)
+	if err != nil {
+		return nil, err
+	}
+	if policy.State == domain.PolicyStateActive {
+		return orgWriteModelToDomainPolicy(policy), nil
+	}
+	return c.getDefaultDomainPolicy(ctx)
+}
+
+func (c *Commands) orgDomainPolicyWriteModelByID(ctx context.Context, orgID string) (policy *OrgDomainPolicyWriteModel, err error) {
+	ctx, span := tracing.NewSpan(ctx)
+	defer func() { span.EndWithError(err) }()
+
+	writeModel := NewOrgDomainPolicyWriteModel(orgID)
+	err = c.eventstore.FilterToQueryReducer(ctx, writeModel)
+	if err != nil {
+		return nil, err
+	}
+	return writeModel, nil
+}