internal IStoreModel GetStoreProxy()

in Microsoft.Azure.Cosmos/src/DocumentClient.cs [6569:6652]
78 lines of code
28 McCabe index (conditional complexity)

        internal IStoreModel GetStoreProxy(DocumentServiceRequest request)
        {
            // If a request is configured to always use Gateway mode(in some cases when targeting .NET Core)
            // we return the Gateway store model
            if (request.UseGatewayMode)
            {
                return this.GatewayStoreModel;
            }

            ResourceType resourceType = request.ResourceType;
            OperationType operationType = request.OperationType;

            if (resourceType == ResourceType.Offer ||
                (resourceType.IsScript() && operationType != OperationType.ExecuteJavaScript) ||
                resourceType == ResourceType.PartitionKeyRange ||
                resourceType == ResourceType.Snapshot ||
                resourceType == ResourceType.ClientEncryptionKey ||
                (resourceType == ResourceType.PartitionKey && operationType == OperationType.Delete))
            {
                return this.GatewayStoreModel;
            }

            if (this.isThinClientEnabled
              && operationType == OperationType.Read
              && resourceType == ResourceType.Database)
            {
                return this.GatewayStoreModel;
            }

            if (operationType == OperationType.Create
                || operationType == OperationType.Upsert)
            {
                if (resourceType == ResourceType.Database ||
                    resourceType == ResourceType.User ||
                    resourceType == ResourceType.Collection ||
                    resourceType == ResourceType.Permission)
                {
                    return this.GatewayStoreModel;
                }
                else
                {
                    return this.StoreModel;
                }
            }
            else if (operationType == OperationType.Delete)
            {
                if (resourceType == ResourceType.Database ||
                    resourceType == ResourceType.User ||
                    resourceType == ResourceType.Collection)
                {
                    return this.GatewayStoreModel;
                }
                else
                {
                    return this.StoreModel;
                }
            }
            else if ((operationType == OperationType.Replace) || (operationType == OperationType.CollectionTruncate))
            {
                if (resourceType == ResourceType.Collection)
                {
                    return this.GatewayStoreModel;
                }
                else
                {
                    return this.StoreModel;
                }
            }
            else if (operationType == OperationType.Read)
            {
                if (resourceType == ResourceType.Collection)
                {
                    return this.GatewayStoreModel;
                }
                else
                {
                    return this.StoreModel;
                }
            }
            else
            {
                return this.StoreModel;
            }
        }