Fix SH-387 uplift creation without primary dispatch

SeaHaven.DataServices/Implementation/DispatchDataService.cs

@@ -122,25 +122,27 @@ namespace SeaHaven.DataServices.Implementation
             return await _context.Dispatches.CountAsync();
         }
 
-        public async Task<IEnumerable<Dispatch>> GetByWorkOrderIdAsync(int workOrderId)
+        public async Task<IEnumerable<Dispatch>> GetByWorkOrderIdAsync(
+            int workOrderId,
+            CancellationToken cancellationToken = default)
         {
             var dispatchIds = await _context.DispatchWorkOrders
                 .Where(dwo => dwo.WorkOrderId == workOrderId)
                 .Select(dwo => dwo.DispatchId)
                 .Distinct()
-                .ToListAsync();
+                .ToListAsync(cancellationToken);
 
             var directIds = await _context.Dispatches
                 .Where(d => d.WorkOrderId == workOrderId)
                 .Select(d => d.Id)
-                .ToListAsync();
+                .ToListAsync(cancellationToken);
 
             var allIds = dispatchIds.Union(directIds).Distinct().ToList();
 
             return await _context.Dispatches
                 .Where(d => allIds.Contains(d.Id))
                 .Include(d => d.Vendor)
-                .ToListAsync();
+                .ToListAsync(cancellationToken);
         }
 
         public async Task<IEnumerable<Dispatch>> GetByWorkOrderIdsAsync(IEnumerable<int> workOrderIds)

SeaHaven.DataServices/Interfaces/IDispatchDataService.cs

@@ -11,7 +11,9 @@ namespace SeaHaven.DataServices.Interfaces
         Task<Dispatch?> GetByIdWithVendorAndWorkOrderAsync(int id);
         Task<IEnumerable<Dispatch>> GetAllAsync();
         Task<IEnumerable<Dispatch>> GetByVendorIdAsync(int vendorId);
-        Task<IEnumerable<Dispatch>> GetByWorkOrderIdAsync(int workOrderId);
+        Task<IEnumerable<Dispatch>> GetByWorkOrderIdAsync(
+            int workOrderId,
+            CancellationToken cancellationToken = default);
         Task<IEnumerable<Dispatch>> GetByWorkOrderIdsAsync(IEnumerable<int> workOrderIds);
         Task<IEnumerable<Dispatch>> GetByStatusAsync(string status);
         Task<(IEnumerable<Dispatch> Items, int TotalCount)> GetPagedAsync(int page, int pageSize, string? search = null, string? status = null);

SeaHaven.Services/Implementation/WorkOrderUpliftService.cs

@@ -95,7 +95,7 @@ namespace SeaHaven.Services.Implementation
                 workOrderId,
                 cancellationToken,
                 accountFilter);
-            if (workOrder?.PrimaryDispatchId is not int dispatchId)
+            if (workOrder == null)
                 throw new InvalidOperationException("Work order has no primary dispatch for uplift requests");
 
             if (workOrder.LifecycleStatus is LifecycleStatus.Completed or LifecycleStatus.Canceled)
@@ -104,14 +104,30 @@ namespace SeaHaven.Services.Implementation
                     $"Cannot create an uplift on a '{workOrder.LifecycleStatus}' work order");
             }
 
-            var dispatch = await _dispatchData.GetByIdAsync(dispatchId);
-            if (dispatch == null)
-                throw new KeyNotFoundException("Dispatch not found");
+            Dispatch? dispatch;
+            if (workOrder.PrimaryDispatchId is int primaryDispatchId)
+            {
+                dispatch = await _dispatchData.GetByIdAsync(primaryDispatchId);
+                if (dispatch == null)
+                    throw new KeyNotFoundException("Dispatch not found");
+            }
+            else
+            {
+                dispatch = (await _dispatchData.GetByWorkOrderIdAsync(workOrderId, cancellationToken))
+                    .Where(candidate => candidate.IsDeleted != true)
+                    .OrderByDescending(candidate => candidate.DispatchedAt ?? candidate.CreatedDate)
+                    .ThenByDescending(candidate => candidate.Id)
+                    .FirstOrDefault();
+
+                if (dispatch == null)
+                    throw new InvalidOperationException("Work order has no primary dispatch for uplift requests");
+            }
 
             if (IsTerminalForUplift(dispatch.Status))
                 throw new InvalidOperationException($"Cannot request uplift on a '{dispatch.Status}' dispatch");
 
-            if (await _upliftData.HasPendingForWorkOrderAsync(workOrderId, cancellationToken))
+            if (await _upliftData.HasPendingForWorkOrderAsync(workOrderId, cancellationToken)
+                || await _upliftData.HasActiveAsync(dispatch.Id, cancellationToken))
                 throw new InvalidOperationException("An open uplift request already exists for this work order");
 
             var now = _timeProvider.GetUtcNow().UtcDateTime;

SeaHavenIndustries.Tests/WorkOrderUpliftServiceTests.cs

@@ -46,7 +46,8 @@ public sealed class WorkOrderUpliftServiceTests
 
     private static async Task<(WorkOrder WorkOrder, Dispatch Dispatch)> SeedWorkOrderAsync(
         ApplicationDbContext context,
-        WorkOrderType type = WorkOrderType.PM)
+        WorkOrderType type = WorkOrderType.PM,
+        int? primaryDispatchId = 10)
     {
         await WorkOrderAccountTestHelpers.EnsureAccountAsync(context);
         context.Users.Add(new ApplicationUser
@@ -70,7 +71,7 @@ public sealed class WorkOrderUpliftServiceTests
         {
             Id = 1,
             InternalWONumber = "10000000001",
-            PrimaryDispatchId = 10,
+            PrimaryDispatchId = primaryDispatchId,
             AccountId = 1,
             WorkOrderType = type,
         };
@@ -123,6 +124,25 @@ public sealed class WorkOrderUpliftServiceTests
         Assert.Equal(1400m, context.Dispatches.Single(d => d.Id == 10).NTEAmount);
     }
 
+    [Fact]
+    public async Task CreateAsync_WithoutPrimaryDispatch_UsesWorkOrderDispatch()
+    {
+        await using var context = CreateContext();
+        var (workOrder, dispatch) = await SeedWorkOrderAsync(context, primaryDispatchId: null);
+        var service = NewService(context);
+
+        var created = await service.CreateAsync(
+            workOrder.Id,
+            new CreateWorkOrderUpliftRequestDto { Amount = 400m, Notes = "Missing primary" },
+            Dispatcher(),
+            CancellationToken.None);
+
+        Assert.NotNull(created);
+        Assert.Equal("auto_approved", created!.Status);
+        Assert.Equal(1400m, context.Dispatches.Single(d => d.Id == dispatch.Id).NTEAmount);
+        Assert.Equal(1, await context.DispatchUpliftRequests.CountAsync());
+    }
+
     [Fact]
     public async Task CreateAsync_PmAmountAboveCap_CreatesPendingRequest()
     {
@@ -233,6 +253,35 @@ public sealed class WorkOrderUpliftServiceTests
         Assert.Contains("open uplift request", ex.Message, StringComparison.OrdinalIgnoreCase);
     }
 
+    [Fact]
+    public async Task CreateAsync_ActiveRequestOnPrimaryDispatch_BlocksDuplicate()
+    {
+        await using var context = CreateContext();
+        var (workOrder, dispatch) = await SeedWorkOrderAsync(context);
+        dispatch.WorkOrderId = null;
+        context.DispatchUpliftRequests.Add(new DispatchUpliftRequest
+        {
+            Id = 100,
+            DispatchId = dispatch.Id,
+            RequestedNTE = 300m,
+            Status = "Pending",
+            RequiredTier = 1,
+            NotificationStatus = "Pending",
+        });
+        await context.SaveChangesAsync();
+
+        var service = NewService(context);
+        var ex = await Assert.ThrowsAsync<InvalidOperationException>(() =>
+            service.CreateAsync(
+                workOrder.Id,
+                new CreateWorkOrderUpliftRequestDto { Amount = 100m, Notes = "Duplicate open" },
+                Dispatcher(),
+                CancellationToken.None));
+
+        Assert.Contains("open uplift request", ex.Message, StringComparison.OrdinalIgnoreCase);
+        Assert.Single(context.DispatchUpliftRequests);
+    }
+
     [Fact]
     public async Task WithdrawPendingForWorkOrderAsync_CancelsOpenRequestsAndAudits()
     {