Add InternalWONumber field with auto-generation

- Add InternalWONumber to WorkOrder model
- Auto-generate 8-digit sequential numbers starting at 10000001
- Generate on new work order creation and DynamoDB sync
- Include in GetWorkorderById and GetWorkOrderList responses
- Add BackfillInternalWONumbers endpoint for existing records
- Add migration for new column

Api.SeaHavenIndustries/Controllers/SyncController.cs

@@ -30,6 +30,16 @@ namespace Api.SeaHavenIndustries.Controllers
             var created = 0;
             var updated = 0;
             var locationsCreated = 0;
+
+            var lastInternalWO = await _db.workOrders
+                .Where(w => w.InternalWONumber != null && w.InternalWONumber != "")
+                .OrderByDescending(w => w.InternalWONumber)
+                .Select(w => w.InternalWONumber)
+                .FirstOrDefaultAsync();
+            int nextInternal = 10000001;
+            if (lastInternalWO != null && int.TryParse(lastInternalWO, out var parsed))
+                nextInternal = parsed + 1;
+
             Dictionary<string, AttributeValue>? lastKey = null;
 
             do
@@ -63,6 +73,7 @@ namespace Api.SeaHavenIndustries.Controllers
                     {
                         var wo = new WorkOrder
                         {
+                            InternalWONumber = (nextInternal++).ToString("D8"),
                             ExternalWorkOrderId = externalId,
                             WorkerOrderNumber = externalId,
                             WorkerOrderTitle = GetString(item, "description"),
@@ -197,6 +208,37 @@ namespace Api.SeaHavenIndustries.Controllers
             return Ok(new { synced, created, skipped });
         }
 
+        [HttpPost("BackfillInternalWONumbers")]
+        public async Task<IActionResult> BackfillInternalWONumbers()
+        {
+            var wosMissing = await _db.workOrders
+                .Where(w => w.InternalWONumber == null || w.InternalWONumber == "")
+                .OrderBy(w => w.Id)
+                .ToListAsync();
+
+            if (wosMissing.Count == 0)
+                return Ok(new { updated = 0 });
+
+            var lastWO = await _db.workOrders
+                .Where(w => w.InternalWONumber != null && w.InternalWONumber != "")
+                .OrderByDescending(w => w.InternalWONumber)
+                .Select(w => w.InternalWONumber)
+                .FirstOrDefaultAsync();
+
+            int next = 10000001;
+            if (lastWO != null && int.TryParse(lastWO, out var lastNum))
+                next = lastNum + 1;
+
+            foreach (var wo in wosMissing)
+            {
+                wo.InternalWONumber = next.ToString("D8");
+                next++;
+            }
+
+            await _db.SaveChangesAsync();
+            return Ok(new { updated = wosMissing.Count });
+        }
+
         [HttpPost("BackfillCommentTypes")]
         public async Task<IActionResult> BackfillCommentTypes()
         {

Api.SeaHavenIndustries/Controllers/WorkOrderController.cs

@@ -41,6 +41,7 @@ namespace Api.SeaHavenIndustries.Controllers
             {
                 string userId = User.FindFirstValue(ClaimTypes.NameIdentifier);
                 WorkOrder workOrder = new WorkOrder();
+                workOrder.InternalWONumber = await GenerateInternalWONumber();
                 workOrder.WorkerOrderNumber = model.WorkerOrderNumber;
                 workOrder.WorkerOrderTitle = model.WorkerOrderTitle;
                 workOrder.Description = model.Description;
@@ -381,8 +382,9 @@ namespace Api.SeaHavenIndustries.Controllers
                 .Select(w => new
                 {
                     id = w.Id,
+                    internalWONumber = w.InternalWONumber,
                     workOrderNumber = w.WorkerOrderNumber,
-                    number = w.WorkerOrderNumber,
+                    number = w.InternalWONumber ?? w.WorkerOrderNumber,
                     title = w.WorkerOrderTitle,
                     location = w.Locations != null ? w.Locations.Name : "",
                     locationName = w.Locations != null ? w.Locations.Name : "",
@@ -580,6 +582,7 @@ namespace Api.SeaHavenIndustries.Controllers
             var exist = await _db.workOrders.Include(w => w.Locations).Include(w => w.Comments).Include(w => w.Quotes).Where(w => w.Id == id).Select(s => new
             {
                 s.Id,
+                s.InternalWONumber,
                 s.WorkerOrderNumber,
                 title = s.WorkerOrderTitle,
                 s.Description,
@@ -919,6 +922,21 @@ namespace Api.SeaHavenIndustries.Controllers
                                 }).ToListAsync();
             return Ok(data);
         }
+        private async Task<string> GenerateInternalWONumber()
+        {
+            var lastWO = await _db.workOrders
+                .Where(w => w.InternalWONumber != null)
+                .OrderByDescending(w => w.InternalWONumber)
+                .Select(w => w.InternalWONumber)
+                .FirstOrDefaultAsync();
+
+            int next = 10000001;
+            if (lastWO != null && int.TryParse(lastWO, out var lastNum))
+                next = lastNum + 1;
+
+            return next.ToString("D8");
+        }
+
         public class WorkorderFilterVM
         {
             public int? Id { get; set; }

Data.SeaHavenIndustries/Migrations/20260416224015_AddInternalWONumber.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Data.SeaHavenIndustries.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddInternalWONumber : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "InternalWONumber",
+                table: "workOrders",
+                type: "nvarchar(max)",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "InternalWONumber",
+                table: "workOrders");
+        }
+    }
+}

Data.SeaHavenIndustries/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -1432,6 +1432,9 @@ namespace Data.SeaHavenIndustries.Migrations
                     b.Property<string>("ExternalWorkOrderId")
                         .HasColumnType("nvarchar(max)");
 
+                    b.Property<string>("InternalWONumber")
+                        .HasColumnType("nvarchar(max)");
+
                     b.Property<bool?>("IsDeleted")
                         .HasColumnType("bit");
 

Data.SeaHavenIndustries/Models/WorkerOrder.cs

@@ -6,6 +6,7 @@ namespace Data.SeaHavenIndustries
 {
     public class WorkOrder : FullAuditEntity
     {
+        public string? InternalWONumber { get; set; }
         public string? ExternalWorkOrderId { get; set; }
         public string? WorkerOrderNumber { get; set; }
         public string? WorkerOrderTitle { get; set; }