feat: features (#1427)

* features

* features

* features

* fix json tags

* add features handler to auth

* mocks for tests

* add setup step

* fixes

* add featurelist to auth api

* grandfather state and typos

* typo

* merge new-eventstore

* fix login policy tests

* label policy in features

* audit log retention

internal/command/iam_features.go

@@ -0,0 +1,64 @@
+package command
+
+import (
+	"context"
+
+	caos_errs "github.com/caos/zitadel/internal/errors"
+	"github.com/caos/zitadel/internal/repository/iam"
+
+	"github.com/caos/zitadel/internal/domain"
+)
+
+func (c *Commands) SetDefaultFeatures(ctx context.Context, features *domain.Features) (*domain.ObjectDetails, error) {
+	existingFeatures := NewIAMFeaturesWriteModel()
+	setEvent, err := c.setDefaultFeatures(ctx, existingFeatures, features)
+	if err != nil {
+		return nil, err
+	}
+
+	pushedEvents, err := c.eventstore.PushEvents(ctx, setEvent)
+	if err != nil {
+		return nil, err
+	}
+	err = AppendAndReduce(existingFeatures, pushedEvents...)
+	if err != nil {
+		return nil, err
+	}
+	return writeModelToObjectDetails(&existingFeatures.WriteModel), nil
+}
+
+func (c *Commands) setDefaultFeatures(ctx context.Context, existingFeatures *IAMFeaturesWriteModel, features *domain.Features) (*iam.FeaturesSetEvent, error) {
+	err := c.eventstore.FilterToQueryReducer(ctx, existingFeatures)
+	if err != nil {
+		return nil, err
+	}
+	setEvent, hasChanged := existingFeatures.NewSetEvent(
+		ctx,
+		IAMAggregateFromWriteModel(&existingFeatures.FeaturesWriteModel.WriteModel),
+		features.TierName,
+		features.TierDescription,
+		features.State,
+		features.StateDescription,
+		features.AuditLogRetention,
+		features.LoginPolicyFactors,
+		features.LoginPolicyIDP,
+		features.LoginPolicyPasswordless,
+		features.LoginPolicyRegistration,
+		features.LoginPolicyUsernameLogin,
+		features.PasswordComplexityPolicy,
+		features.LabelPolicy,
+	)
+	if !hasChanged {
+		return nil, caos_errs.ThrowPreconditionFailed(nil, "Features-GE4h2", "Errors.Features.NotChanged")
+	}
+	return setEvent, nil
+}
+
+func (c *Commands) getDefaultFeatures(ctx context.Context) (*domain.Features, error) {
+	existingFeatures := NewIAMFeaturesWriteModel()
+	err := c.eventstore.FilterToQueryReducer(ctx, existingFeatures)
+	if err != nil {
+		return nil, err
+	}
+	return writeModelToFeatures(&existingFeatures.FeaturesWriteModel), nil
+}