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/instance_policy_domain.go

@@ -0,0 +1,92 @@
+package command
+
+import (
+	"context"
+
+	"github.com/caos/zitadel/internal/domain"
+	caos_errs "github.com/caos/zitadel/internal/errors"
+	"github.com/caos/zitadel/internal/eventstore"
+	iam_repo "github.com/caos/zitadel/internal/repository/instance"
+	"github.com/caos/zitadel/internal/telemetry/tracing"
+)
+
+func (c *Commands) AddDefaultDomainPolicy(ctx context.Context, policy *domain.DomainPolicy) (*domain.DomainPolicy, error) {
+	addedPolicy := NewInstanceDomainPolicyWriteModel()
+	instanceAgg := InstanceAggregateFromWriteModel(&addedPolicy.WriteModel)
+	event, err := c.addDefaultDomainPolicy(ctx, instanceAgg, 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 writeModelToDomainPolicy(addedPolicy), nil
+}
+
+func (c *Commands) addDefaultDomainPolicy(ctx context.Context, instanceAgg *eventstore.Aggregate, addedPolicy *InstanceDomainPolicyWriteModel, 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, "INSTANCE-Lk0dS", "Errors.IAM.DomainPolicy.AlreadyExists")
+	}
+	return iam_repo.NewInstnaceDomainPolicyAddedEvent(ctx, instanceAgg, policy.UserLoginMustBeDomain), nil
+}
+
+func (c *Commands) ChangeDefaultDomainPolicy(ctx context.Context, policy *domain.DomainPolicy) (*domain.DomainPolicy, error) {
+	existingPolicy, err := c.defaultDomainPolicyWriteModelByID(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if !existingPolicy.State.Exists() {
+		return nil, caos_errs.ThrowNotFound(nil, "INSTANCE-0Pl0d", "Errors.IAM.DomainPolicy.NotFound")
+	}
+
+	instanceAgg := InstanceAggregateFromWriteModel(&existingPolicy.PolicyDomainWriteModel.WriteModel)
+	changedEvent, hasChanged := existingPolicy.NewChangedEvent(ctx, instanceAgg, policy.UserLoginMustBeDomain)
+	if !hasChanged {
+		return nil, caos_errs.ThrowPreconditionFailed(nil, "INSTANCE-4M9vs", "Errors.IAM.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 writeModelToDomainPolicy(existingPolicy), nil
+}
+
+func (c *Commands) getDefaultDomainPolicy(ctx context.Context) (*domain.DomainPolicy, error) {
+	policyWriteModel, err := c.defaultDomainPolicyWriteModelByID(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if !policyWriteModel.State.Exists() {
+		return nil, caos_errs.ThrowInvalidArgument(nil, "INSTANCE-3n8fs", "Errors.IAM.PasswordComplexityPolicy.NotFound")
+	}
+	policy := writeModelToDomainPolicy(policyWriteModel)
+	policy.Default = true
+	return policy, nil
+}
+
+func (c *Commands) defaultDomainPolicyWriteModelByID(ctx context.Context) (policy *InstanceDomainPolicyWriteModel, err error) {
+	ctx, span := tracing.NewSpan(ctx)
+	defer func() { span.EndWithError(err) }()
+
+	writeModel := NewInstanceDomainPolicyWriteModel()
+	err = c.eventstore.FilterToQueryReducer(ctx, writeModel)
+	if err != nil {
+		return nil, err
+	}
+	return writeModel, nil
+}