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+/**
+ *    Copyright (C) 2018-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the Server Side Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#pragma once
+
+#include <boost/optional.hpp>
+
+#include "mongo/base/status_with.h"
+#include "mongo/db/catalog/collection_catalog.h"
+#include "mongo/db/namespace_string.h"
+#include "mongo/db/operation_context.h"
+#include "mongo/db/views/resolved_view.h"
+#include "mongo/db/views/view.h"
+
+namespace mongo {
+namespace view_catalog_helpers {
+
+/**
+ * Returns Status::OK with the set of involved namespaces if the given pipeline is eligible to
+ * act as a view definition. Otherwise, returns ErrorCodes::OptionNotSupportedOnView.
+ */
+StatusWith<stdx::unordered_set<NamespaceString>> validatePipeline(OperationContext* opCtx,
+                                                                  const ViewDefinition& viewDef);
+
+/**
+ * Resolve the views on 'nss', transforming the pipeline appropriately. This function returns a
+ * fully-resolved view definition containing the backing namespace, the resolved pipeline and
+ * the collation to use for the operation.
+ *
+ * With SERVER-54597, we allow queries on timeseries collections *only* to specify non-default
+ * collations. So in the case of queries on timeseries collections, we create a ResolvedView
+ * with the request's collation (timeSeriesCollator) rather than the collection's default
+ * collator.
+ *
+ * Caller must ensure corresponding database exists.
+ */
+StatusWith<ResolvedView> resolveView(OperationContext* opCtx,
+                                     std::shared_ptr<const CollectionCatalog> catalog,
+                                     const NamespaceString& nss,
+                                     boost::optional<BSONObj> timeseriesCollator);
+
+}  // namespace view_catalog_helpers
+}  // namespace mongo