backend/Tnsu.ApprovalRoute.Application/RequestManage/RequestManageService.cs

@@ -1,3 +1,4 @@
+using System.Collections.Concurrent;
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using FluentResults;
@@ -266,6 +267,29 @@ public sealed class RequestManageService(
         return result;
     }
 
+    // Пара «список согласования → (его заголовок, адрес парного списка данных)»
+    // не меняется, пока список не переименуют, — запоминаем на время жизни процесса,
+    // чтобы не тратить два запроса к SharePoint на каждый вызов. Ключ — адрес списка.
+    private static readonly ConcurrentDictionary<string, (string ApprovalTitle, string DataListUrl)> ListPairs =
+        new(StringComparer.OrdinalIgnoreCase);
+
+    private async Task<(string ApprovalTitle, string DataListUrl)?> ResolveListPairAsync(
+        string siteUrl, string approvalListUrl, CancellationToken cancellationToken)
+    {
+        if (ListPairs.TryGetValue(approvalListUrl, out var cached)) return cached;
+
+        var approvalList = await sharePoint.GetListByUrlAsync(siteUrl, approvalListUrl, cancellationToken);
+        if (approvalList is null || !ApprovalListSuffix.IsMatch(approvalList.Title)) return null;
+
+        var dataTitle = ApprovalListSuffix.Replace(approvalList.Title, " — данные");
+        var dataList = await sharePoint.GetListByTitleAsync(siteUrl, dataTitle, cancellationToken);
+        if (dataList is null) return null;
+
+        var pair = (approvalList.Title, dataList.ServerRelativeUrl);
+        ListPairs[approvalListUrl] = pair;
+        return pair;
+    }
+
     private static string? ListUrlFromHitPath(string? path)
     {
         if (string.IsNullOrWhiteSpace(path) || !Uri.TryCreate(path, UriKind.Absolute, out var uri)) return null;
@@ -287,18 +311,15 @@ public sealed class RequestManageService(
     {
         try
         {
-            var approvalList = await sharePoint.GetListByUrlAsync(siteUrl, approvalListUrl, cancellationToken);
-            if (approvalList is null || !ApprovalListSuffix.IsMatch(approvalList.Title)) return [];
-
-            var dataTitle = ApprovalListSuffix.Replace(approvalList.Title, " — данные");
-            var dataList = await sharePoint.GetListByTitleAsync(siteUrl, dataTitle, cancellationToken);
-            if (dataList is null) return [];
+            var pair = await ResolveListPairAsync(siteUrl, approvalListUrl, cancellationToken);
+            if (pair is null) return [];
+            var (approvalTitle, dataListUrl) = pair.Value;
 
             // Какому типу заявок принадлежит эта партиция (текущая или архивная).
             var requestType = siteTypes.FirstOrDefault(rt =>
-                string.Equals(rt.ListId, dataList.ServerRelativeUrl, StringComparison.OrdinalIgnoreCase)
+                string.Equals(rt.ListId, dataListUrl, StringComparison.OrdinalIgnoreCase)
                 || archivedByType[rt.Id].Any(a =>
-                    string.Equals(a.ListId, dataList.ServerRelativeUrl, StringComparison.OrdinalIgnoreCase)));
+                    string.Equals(a.ListId, dataListUrl, StringComparison.OrdinalIgnoreCase)));
             if (requestType is null) return [];
 
             var rows = new List<ManagedApprovalRowDto>();
@@ -318,12 +339,12 @@ public sealed class RequestManageService(
             if (matched.Count == 0) return [];
 
             var dataById = await ReadDataRowsAsync(
-                siteUrl, dataList.ServerRelativeUrl, matched.Select(r => r.TicketId).Distinct().ToList(),
+                siteUrl, dataListUrl, matched.Select(r => r.TicketId).Distinct().ToList(),
                 cancellationToken);
 
             return matched
                 .Select(r => ToUserRow(
-                    r, requestType, siteUrl, dataList.ServerRelativeUrl, approvalList.Title,
+                    r, requestType, siteUrl, dataListUrl, approvalTitle,
                     dataById.GetValueOrDefault(r.TicketId)))
                 .ToList();
         }