refactor: optimize institution contract list retrieval and improve workshop group loading

CompanyManagment.EFCore/Repository/InstitutionContractRepository.cs

@@ -1098,19 +1098,27 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
     public async Task<PagedResult<GetInstitutionContractListItemsViewModel>> GetList(
         InstitutionContractListSearchModel searchModel)
     {
-        var query = _context.InstitutionContractSet
-            .Include(x => x.WorkshopGroup)
-            .ThenInclude(x => x.InitialWorkshops)
-            .Include(x => x.WorkshopGroup)
-            .ThenInclude(x => x.CurrentWorkshops)
-            .Include(x => x.ContactInfoList).AsNoTracking();
-
         var now = DateTime.Today;
         var nowFa = now.ToFarsi();
         var endFa = nowFa.FindeEndOfMonth();
         var endThisMontGr = endFa.ToGeorgianDateTime();
 
-        var joinedQuery = query.Join(_context.PersonalContractingParties
+        var contractsWithExtension = await _context.InstitutionContractSet
+            .Where(x => x.IsActiveString == "true")
+            .Select(x => new { x.ContractingPartyId, x.ExtensionNo })
+            .ToListAsync();
+
+        var contractsWithExtensionLookup = contractsWithExtension
+            .GroupBy(x => x.ContractingPartyId)
+            .ToDictionary(
+                g => g.Key,
+                g => g.Max(x => x.ExtensionNo)
+            );
+        
+        var joinedQuery = _context.InstitutionContractSet
+            .AsNoTracking()
+            .Join(_context.PersonalContractingParties
+                    .AsNoTracking()
                     .Include(x => x.Employers)
                     .ThenInclude(x => x.WorkshopEmployers)
                     .ThenInclude(x => x.Workshop),
@@ -1138,7 +1146,8 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
                                         : x.contract.ContractAmount == 0
                                             ? (int)InstitutionContractListStatus.Free
                                             : !x.contractingParty.Employers
-                                                .SelectMany(e => e.WorkshopEmployers.Select(we => we.Workshop)).Any()
+                                                .SelectMany(e => e.WorkshopEmployers
+                                                    .Select(we => we.Workshop)).Any()
                                                 ? (int)InstitutionContractListStatus.WithoutWorkshop
                                                 : (int)InstitutionContractListStatus.Active
             });
@@ -1301,6 +1310,15 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
 
         var list = await orderedQuery.ApplyPagination(searchModel.PageIndex, searchModel.PageSize).ToListAsync();
         var contractingPartyIds = list.Select(x => x.contractingParty.id).ToList();
+        var contractIds = list.Select(x => x.contract.id).ToList();
+
+        // بارگذاری WorkshopGroups فقط برای قراردادهای صفحه فعلی
+        var workshopGroups = await _context.InstitutionContractWorkshopGroups
+            .AsNoTracking()
+            .Include(x=>x.InitialWorkshops )
+            .Include(x => x.CurrentWorkshops)
+            .Where(x => contractIds.Contains(x.InstitutionContractId))
+            .ToDictionaryAsync(x => x.InstitutionContractId, x => x);
 
         var financialStatements = _context.FinancialStatments.Include(x => x.FinancialTransactionList)
             .Where(x => contractingPartyIds.Contains(x.ContractingPartyId)).ToList();
@@ -1324,13 +1342,19 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
 
                 var archiveCode = minArchiveCode == 10000000 ? 0 : minArchiveCode;
                 var status = Enum.Parse<InstitutionContractListStatus>(x.StatusPriority.ToString());
-                List<InstitutionContractWorkshopBase> currentStateWorkshops = x.contract.WorkshopGroup?.CurrentWorkshops
+                
+                // دریافت WorkshopGroup از dictionary بارگذاری شده
+                workshopGroups.TryGetValue(x.contract.id, out var workshopGroup);
+                
+                List<InstitutionContractWorkshopBase> currentStateWorkshops = workshopGroup?.CurrentWorkshops
                     .Cast<InstitutionContractWorkshopBase>().ToList();
 
                 var statement = financialStatements.FirstOrDefault(f => f.ContractingPartyId == x.contractingParty.id);
 
-                currentStateWorkshops?.AddRange(
-                    x.contract.WorkshopGroup?.InitialWorkshops.Where(w => !w.WorkshopCreated) ?? []);
+                if (currentStateWorkshops != null && workshopGroup != null)
+                {
+                    currentStateWorkshops.AddRange(workshopGroup.InitialWorkshops.Where(w => !w.WorkshopCreated));
+                }
 
                 var workshopDetails = currentStateWorkshops?.Select(w =>
                 {
@@ -1380,7 +1404,7 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
                     IsExpired = x.contract.ContractEndGr <= endThisMontGr,
                     ContractingPartyId = x.contractingParty.id,
                     Workshops = workshopDetails,
-                    IsInPersonContract = x.contract.WorkshopGroup?.CurrentWorkshops
+                    IsInPersonContract = workshopGroup?.CurrentWorkshops
                         .Any(y => y.Services.ContractInPerson) ?? true,
                     IsOldContract = x.contract.SigningType == InstitutionContractSigningType.Legacy
                 };