Shared interfaces pagination update (#274)

Updated INextPageToken parameter on Shared interfaces to PageRequest type, functionality unchanged
Added SupportsAscending and SupportsDescending properties to PaginatedEndpointOptions to expose supported data directions
Added MaxAge property to PaginatedEndpointOptions to expose the max age of data that can be requested
Added Direction property to Shared interfaces paginated requests to configure pagination data direction 
Removed PaginationSupport property from PaginatedEndpointOptions, replaced by above new properties
Updated Shared GetTradeHistoryRequest EndTime property to be optional
Updated I(Futures/Spot)OrderRestClient.GetClosed(Futures/Spot)OrdersOptions from PaginatedEndpointOptions<GetClosedOrdersRequest> to GetClosedOrdersOptions 
Updated I(Futures/Spot)OrderRestClient.Get(Futures/Spot)UserTradesOptions from PaginatedEndpointOptions<GetUserTradesRequest> to GetUserTradesOptions
Updated rate limiting PathStartFilter to ignore added or missing slash before the path
Fixed KlineTracker throwing exception if there is no data in the initial snapshot

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetClosedOrdersOptions.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Objects;
+using System;
 using System.Text;
 
 namespace CryptoExchange.Net.SharedApis
@@ -8,24 +9,36 @@ namespace CryptoExchange.Net.SharedApis
     /// </summary>
     public class GetClosedOrdersOptions : PaginatedEndpointOptions<GetClosedOrdersRequest>
     {
-        /// <summary>
-        /// Whether the start/end time filter is supported
-        /// </summary>
-        public bool TimeFilterSupported { get; set; }
-
         /// <summary>
         /// ctor
         /// </summary>
-        public GetClosedOrdersOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit) : base(paginationType, timeFilterSupported, maxLimit, true)
+        public GetClosedOrdersOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, true)
         {
-            TimeFilterSupported = timeFilterSupported;
         }
 
         /// <inheritdoc />
         public override Error? ValidateRequest(string exchange, GetClosedOrdersRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
-            if (!TimeFilterSupported && request.StartTime != null)
-                return ArgumentError.Invalid(nameof(GetClosedOrdersRequest.StartTime), $"Time filter is not supported");
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }
@@ -34,7 +47,7 @@ namespace CryptoExchange.Net.SharedApis
         public override string ToString(string exchange)
         {
             var sb = new StringBuilder(base.ToString(exchange));
-            sb.AppendLine($"Time filter supported: {TimeFilterSupported}");
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
             return sb.ToString();
         }
     }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetDepositsOptions.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Objects;
+using System;
 using System.Text;
 
 namespace CryptoExchange.Net.SharedApis
@@ -8,24 +9,36 @@ namespace CryptoExchange.Net.SharedApis
     /// </summary>
     public class GetDepositsOptions : PaginatedEndpointOptions<GetDepositsRequest>
     {
-        /// <summary>
-        /// Whether the start/end time filter is supported
-        /// </summary>
-        public bool TimeFilterSupported { get; set; }
-
         /// <summary>
         /// ctor
         /// </summary>
-        public GetDepositsOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit) : base(paginationType, timeFilterSupported, maxLimit, true)
+        public GetDepositsOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, true)
         {
-            TimeFilterSupported = timeFilterSupported;
         }
 
         /// <inheritdoc />
         public override Error? ValidateRequest(string exchange, GetDepositsRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
-            if (!TimeFilterSupported && request.StartTime != null)
-                return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }
@@ -34,7 +47,7 @@ namespace CryptoExchange.Net.SharedApis
         public override string ToString(string exchange)
         {
             var sb = new StringBuilder(base.ToString(exchange));
-            sb.AppendLine($"Time filter supported: {TimeFilterSupported}");
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
             return sb.ToString();
         }
     }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetFundingRateHistoryOptions.cs

@@ -1,4 +1,8 @@
-namespace CryptoExchange.Net.SharedApis
+using CryptoExchange.Net.Objects;
+using System;
+using System.Text;
+
+namespace CryptoExchange.Net.SharedApis
 {
     /// <summary>
     /// Options for requesting funding rate history
@@ -8,8 +12,43 @@
         /// <summary>
         /// ctor
         /// </summary>
-        public GetFundingRateHistoryOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit, bool needsAuthentication) : base(paginationType, timeFilterSupported, maxLimit, needsAuthentication)
+        public GetFundingRateHistoryOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit, bool needsAuthentication) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, needsAuthentication)
         {
         }
+
+        /// <inheritdoc />
+        public override Error? ValidateRequest(string exchange, GetFundingRateHistoryRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
+        {
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
+
+            return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
+        }
+
+        /// <inheritdoc />
+        public override string ToString(string exchange)
+        {
+            var sb = new StringBuilder(base.ToString(exchange));
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
+            return sb.ToString();
+        }
     }
 }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetKlinesOptions.cs

@@ -18,15 +18,12 @@ namespace CryptoExchange.Net.SharedApis
         /// Max number of data points which can be requested
         /// </summary>
         public int? MaxTotalDataPoints { get; set; }
-        /// <summary>
-        /// The max age of the data that can be requested
-        /// </summary>
-        public TimeSpan? MaxAge { get; set; }
 
         /// <summary>
         /// ctor
         /// </summary>
-        public GetKlinesOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit, bool needsAuthentication) : base(paginationType, timeFilterSupported, maxLimit, needsAuthentication)
+        public GetKlinesOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit, bool needsAuthentication)
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, needsAuthentication)
         {
             SupportIntervals = new[]
             {
@@ -50,7 +47,8 @@ namespace CryptoExchange.Net.SharedApis
         /// <summary>
         /// ctor
         /// </summary>
-        public GetKlinesOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit, bool needsAuthentication, params SharedKlineInterval[] intervals) : base(paginationType, timeFilterSupported, maxLimit, needsAuthentication)
+        public GetKlinesOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit, bool needsAuthentication, params SharedKlineInterval[] intervals) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, needsAuthentication)
         {
             SupportIntervals = intervals;
         }
@@ -68,12 +66,29 @@ namespace CryptoExchange.Net.SharedApis
             if (!IsSupported(request.Interval))
                 return ArgumentError.Invalid(nameof(GetKlinesRequest.Interval), "Interval not supported");
 
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
             if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
                 return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} klines are available");
 
             if (request.Limit > MaxLimit)
                 return ArgumentError.Invalid(nameof(GetKlinesRequest.Limit), $"Only {MaxLimit} klines can be retrieved per request");
 
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction == DataDirection.Ascending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
+
             if (MaxTotalDataPoints.HasValue)
             {
                 if (request.Limit > MaxTotalDataPoints.Value)
@@ -93,6 +108,7 @@ namespace CryptoExchange.Net.SharedApis
         public override string ToString(string exchange)
         {
             var sb = new StringBuilder(base.ToString(exchange));
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
             sb.AppendLine($"Supported SharedKlineInterval values: {string.Join(", ", SupportIntervals)}");
             if (MaxAge != null)
                 sb.AppendLine($"Max age of data: {MaxAge}");

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetPositionHistoryOptions.cs

@@ -1,4 +1,8 @@
-namespace CryptoExchange.Net.SharedApis
+using CryptoExchange.Net.Objects;
+using System;
+using System.Text;
+
+namespace CryptoExchange.Net.SharedApis
 {
     /// <summary>
     /// Options for requesting position history
@@ -8,8 +12,43 @@
         /// <summary>
         /// ctor
         /// </summary>
-        public GetPositionHistoryOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit) : base(paginationType, timeFilterSupported, maxLimit, true)
+        public GetPositionHistoryOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, true)
         {
         }
+
+        /// <inheritdoc />
+        public override Error? ValidateRequest(string exchange, GetPositionHistoryRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
+        {
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
+
+            return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
+        }
+
+        /// <inheritdoc />
+        public override string ToString(string exchange)
+        {
+            var sb = new StringBuilder(base.ToString(exchange));
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
+            return sb.ToString();
+        }
     }
 }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetTradeHistoryOptions.cs

@@ -9,34 +9,27 @@ namespace CryptoExchange.Net.SharedApis
     /// </summary>
     public class GetTradeHistoryOptions : PaginatedEndpointOptions<GetTradeHistoryRequest>
     {
-        /// <summary>
-        /// The max age of data that can be requested
-        /// </summary>
-        public TimeSpan? MaxAge { get; set; }
-
         /// <summary>
         /// ctor
         /// </summary>
-        public GetTradeHistoryOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit, bool needsAuthentication) : base(paginationType, timeFilterSupported, maxLimit, needsAuthentication)
+        public GetTradeHistoryOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit, bool needsAuthentication)
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, needsAuthentication)
         {
         }
 
         /// <inheritdoc />
         public override Error? ValidateRequest(string exchange, GetTradeHistoryRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
             if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
-                return ArgumentError.Invalid(nameof(GetTradeHistoryRequest.StartTime), $"Only the most recent {MaxAge} trades are available");
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }
-
-        /// <inheritdoc />
-        public override string ToString(string exchange)
-        {
-            var sb = new StringBuilder(base.ToString(exchange));
-            if (MaxAge != null)
-                sb.AppendLine($"Max age of data: {MaxAge}");
-            return sb.ToString();
-        }
     }
 }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetUserTradesOptions.cs

@@ -0,0 +1,54 @@
+using CryptoExchange.Net.Objects;
+using System;
+using System.Text;
+
+namespace CryptoExchange.Net.SharedApis
+{
+    /// <summary>
+    /// Options for requesting user trades
+    /// </summary>
+    public class GetUserTradesOptions : PaginatedEndpointOptions<GetUserTradesRequest>
+    {
+        /// <summary>
+        /// ctor
+        /// </summary>
+        public GetUserTradesOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit) 
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, true)
+        {
+        }
+
+        /// <inheritdoc />
+        public override Error? ValidateRequest(string exchange, GetUserTradesRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
+        {
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
+
+            return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
+        }
+
+        /// <inheritdoc />
+        public override string ToString(string exchange)
+        {
+            var sb = new StringBuilder(base.ToString(exchange));
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
+            return sb.ToString();
+        }
+    }
+}

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/GetWithdrawalsOptions.cs

@@ -1,4 +1,5 @@
 using CryptoExchange.Net.Objects;
+using System;
 using System.Text;
 
 namespace CryptoExchange.Net.SharedApis
@@ -8,24 +9,36 @@ namespace CryptoExchange.Net.SharedApis
     /// </summary>
     public class GetWithdrawalsOptions : PaginatedEndpointOptions<GetWithdrawalsRequest>
     {
-        /// <summary>
-        /// Whether the start/end time filter is supported
-        /// </summary>
-        public bool TimeFilterSupported { get; set; }
-
         /// <summary>
         /// ctor
         /// </summary>
-        public GetWithdrawalsOptions(SharedPaginationSupport paginationType, bool timeFilterSupported, int maxLimit) : base(paginationType, timeFilterSupported, maxLimit, true)
+        public GetWithdrawalsOptions(bool supportsAscending, bool supportsDescending, bool timeFilterSupported, int maxLimit)
+            : base(supportsAscending, supportsDescending, timeFilterSupported, maxLimit, true)
         {
-            TimeFilterSupported = timeFilterSupported;
         }
 
         /// <inheritdoc />
         public override Error? ValidateRequest(string exchange, GetWithdrawalsRequest request, TradingMode? tradingMode, TradingMode[] supportedApiTypes)
         {
-            if (!TimeFilterSupported && request.StartTime != null)
-                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.StartTime), $"Time filter is not supported");
+            if (!SupportsAscending && request.Direction == DataDirection.Ascending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Ascending direction is not supported");
+
+            if (!SupportsDescending && request.Direction == DataDirection.Descending)
+                return ArgumentError.Invalid(nameof(GetWithdrawalsRequest.Direction), $"Descending direction is not supported");
+
+            if (MaxAge.HasValue && request.StartTime < DateTime.UtcNow.Add(-MaxAge.Value))
+                return ArgumentError.Invalid(nameof(GetKlinesRequest.StartTime), $"Only the most recent {MaxAge} period data is available");
+
+            if (!TimePeriodFilterSupport)
+            {
+                // When going descending we can still allow startTime filter to limit the results
+                var now = DateTime.UtcNow;
+                if ((request.Direction != DataDirection.Descending && request.StartTime != null)
+                    || (request.EndTime != null && now - request.EndTime > TimeSpan.FromSeconds(5)))
+                {
+                    return ArgumentError.Invalid(nameof(GetDepositsRequest.StartTime), $"Time filter is not supported");
+                }
+            }
 
             return base.ValidateRequest(exchange, request, tradingMode, supportedApiTypes);
         }
@@ -34,7 +47,7 @@ namespace CryptoExchange.Net.SharedApis
         public override string ToString(string exchange)
         {
             var sb = new StringBuilder(base.ToString(exchange));
-            sb.AppendLine($"Time filter supported: {TimeFilterSupported}");
+            sb.AppendLine($"Time filter supported: {TimePeriodFilterSupport}");
             return sb.ToString();
         }
     }

CryptoExchange.Net/SharedApis/Models/Options/Endpoints/PaginatedEndpointOptions.cs

@@ -1,4 +1,5 @@
-using System.Diagnostics.CodeAnalysis;
+using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Text;
 
 namespace CryptoExchange.Net.SharedApis
@@ -14,9 +15,13 @@ namespace CryptoExchange.Net.SharedApis
 #endif
     {
         /// <summary>
-        /// Type of pagination supported
+        /// Whether ascending data retrieval and pagination is available
         /// </summary>
-        public SharedPaginationSupport PaginationSupport { get; }
+        public bool SupportsAscending { get; set; }
+        /// <summary>
+        /// Whether ascending data retrieval and pagination is available
+        /// </summary>
+        public bool SupportsDescending { get; set; }
 
         /// <summary>
         /// Whether filtering based on start/end time is supported
@@ -28,12 +33,23 @@ namespace CryptoExchange.Net.SharedApis
         /// </summary>
         public int MaxLimit { get; set; }
 
+        /// <summary>
+        /// Max age of data that can be requested
+        /// </summary>
+        public TimeSpan? MaxAge { get; set; }
+
         /// <summary>
         /// ctor
         /// </summary>
-        public PaginatedEndpointOptions(SharedPaginationSupport paginationType, bool timePeriodSupport, int maxLimit, bool needsAuthentication) : base(needsAuthentication)
+        public PaginatedEndpointOptions(
+            bool supportsAscending,
+            bool supportsDescending,
+            bool timePeriodSupport,
+            int maxLimit,
+            bool needsAuthentication) : base(needsAuthentication)
         {
-            PaginationSupport = paginationType;
+            SupportsAscending = supportsAscending;
+            SupportsDescending = supportsDescending;
             TimePeriodFilterSupport = timePeriodSupport;
             MaxLimit = maxLimit;
         }
@@ -42,9 +58,11 @@ namespace CryptoExchange.Net.SharedApis
         public override string ToString(string exchange)
         {
             var sb = new StringBuilder(base.ToString(exchange));
-            sb.AppendLine($"Pagination type: {PaginationSupport}");
+            sb.AppendLine($"Ascending retrieval supported: {SupportsAscending}");
+            sb.AppendLine($"Descending retrieval supported: {SupportsDescending}");
             sb.AppendLine($"Time period filter support: {TimePeriodFilterSupport}");
             sb.AppendLine($"Max limit: {MaxLimit}");
+            sb.AppendLine($"Max age: {MaxAge}");
             return sb.ToString();
         }
     }