feat: add notification policy and password change message (#5065)

Implementation of new notification policy with functionality to send email when a password is changed

internal/api/grpc/admin/notification_policy.go

@@ -0,0 +1,46 @@
+package admin
+
+import (
+	"context"
+
+	"github.com/zitadel/zitadel/internal/api/authz"
+	"github.com/zitadel/zitadel/internal/api/grpc/object"
+	policy_grpc "github.com/zitadel/zitadel/internal/api/grpc/policy"
+	admin_pb "github.com/zitadel/zitadel/pkg/grpc/admin"
+)
+
+func (s *Server) AddNotificationPolicy(ctx context.Context, req *admin_pb.AddNotificationPolicyRequest) (*admin_pb.AddNotificationPolicyResponse, error) {
+	result, err := s.command.AddDefaultNotificationPolicy(ctx, authz.GetInstance(ctx).InstanceID(), req.GetPasswordChange())
+	if err != nil {
+		return nil, err
+	}
+	return &admin_pb.AddNotificationPolicyResponse{
+		Details: object.AddToDetailsPb(
+			result.Sequence,
+			result.EventDate,
+			result.ResourceOwner,
+		),
+	}, nil
+}
+
+func (s *Server) GetNotificationPolicy(ctx context.Context, _ *admin_pb.GetNotificationPolicyRequest) (*admin_pb.GetNotificationPolicyResponse, error) {
+	policy, err := s.query.DefaultNotificationPolicy(ctx, true)
+	if err != nil {
+		return nil, err
+	}
+	return &admin_pb.GetNotificationPolicyResponse{Policy: policy_grpc.ModelNotificationPolicyToPb(policy)}, nil
+}
+
+func (s *Server) UpdateNotificationPolicy(ctx context.Context, req *admin_pb.UpdateNotificationPolicyRequest) (*admin_pb.UpdateNotificationPolicyResponse, error) {
+	result, err := s.command.ChangeDefaultNotificationPolicy(ctx, authz.GetInstance(ctx).InstanceID(), req.GetPasswordChange())
+	if err != nil {
+		return nil, err
+	}
+	return &admin_pb.UpdateNotificationPolicyResponse{
+		Details: object.ChangeToDetailsPb(
+			result.Sequence,
+			result.EventDate,
+			result.ResourceOwner,
+		),
+	}, nil
+}