Fix job scheduler race condition and enhance Blazor reconnection UI

.claude/project-context.md

@@ -5,6 +5,30 @@
 
 ## RECENT CHANGES (This Session)
 
+**Job Scheduler Race Condition Fix (Dec 8, 2025):**
+- ✅ **In-Memory Deduplication** - Added `HashSet<Guid>` to track LayerIds scheduled within the same batch
+- ✅ **Prevents Duplicate Jobs** - Fixed race condition where same layer could be scheduled multiple times during single "Run All Jobs" operation
+- ✅ **Two-Level Protection** - In-memory check (HashSet) runs before database check for O(1) performance
+- ✅ **Applied to Both Methods** - Fixed both ScheduleImportJobsAsync and ScheduleProcessJobsAsync
+- ✅ **Better Logging** - Added debug log message "Job already scheduled in this batch" for transparency
+- Root cause: When multiple layers had same ID in query results or import plugins created new layers during scheduling loop, database check couldn't detect duplicates added in same batch before SaveChangesAsync()
+- Solution: Track scheduled LayerIds in HashSet during loop iteration to prevent within-batch duplicates
+- Files modified: [JobSchedulerService.cs](DiunaBI.Infrastructure/Services/JobSchedulerService.cs)
+- Status: Race condition resolved, duplicate job creation prevented
+
+---
+
+**Blazor Server Reconnection UI Customization (Dec 8, 2025):**
+- ✅ **Custom Reconnection Modal** - Replaced default Blazor "Rejoin failed..." dialog with custom-styled modal
+- ✅ **Theme-Matched Styling** - Changed loader and button colors from blue to app's primary red (#e7163d) matching navbar
+- ✅ **Timer with Elapsed Seconds** - Added real-time timer showing elapsed reconnection time (0s, 1s, 2s...)
+- ✅ **CSS Classes Integration** - Used Blazor's built-in `.components-reconnect-show/failed/rejected` classes for state management
+- ✅ **MutationObserver Timer** - JavaScript watches for CSS class changes to start/stop elapsed time counter
+- ✅ **Professional Design** - Modal backdrop blur, spinner animation, red reload button with hover effects
+- Files modified: [App.razor](DiunaBI.UI.Web/Components/App.razor), [app.css](DiunaBI.UI.Web/wwwroot/app.css)
+- Files created: [reconnect.js](DiunaBI.UI.Web/wwwroot/js/reconnect.js)
+- Status: Blazor reconnection UI now matches app theme with timer indicator
+
 **Jobs List Sorting and Multi-Select Filtering (Dec 8, 2025):**
 - ✅ **Fixed Job Sorting** - Changed from single CreatedAt DESC to Priority ASC → JobType → CreatedAt DESC
 - ✅ **Multi-Select Status Filter** - Replaced single status dropdown with multi-select supporting multiple JobStatus values

DevTools/sql-scripts/PedrolloPL/PedrolloImport.sql

@@ -1,7 +1,9 @@
 DECLARE @JustForDebug TINYINT = 0;
 
+-- FIX DATAINBOX!
+
 -- SETUP VARIABLES
-DECLARE @Year INT = 2024;
+DECLARE @Year INT = 2025;
 DECLARE @Type NVARCHAR(5) = 'B3'; 
 DECLARE @StartDate NVARCHAR(10) = '2025.01.02';
 DECLARE @EndDate NVARCHAR(10) = '2026.12.31'
@@ -22,7 +24,7 @@ SET @Plugin =
 DECLARE @DataInboxName NVARCHAR(100);
 SET @DataInboxName =
         CASE @Type
-            WHEN 'B3'  THEN 'B3_2024'
+            WHEN 'B3'  THEN 'P2_2025'
             ELSE NULL  -- If @Type doesn't match, set it to NULL
             END;
         

DevTools/sql-scripts/PedrolloPL/PedrolloProcessP2.sql

@@ -1,7 +1,7 @@
 DECLARE @JustForDebug TINYINT = 0;
 
 -- SETUP VARIABLES
-DECLARE @Year INT = 2024;
+DECLARE @Year INT = 2025;
 
 DECLARE @Number INT = (SELECT COUNT(id) + 1  FROM [DiunaBI-PedrolloPL].[dbo].[Layers]);
 DECLARE @CurrentTimestamp NVARCHAR(14) = FORMAT(GETDATE(), 'yyyyMMddHHmm');
@@ -56,3 +56,16 @@ VALUES ((SELECT NEWID()), 'Plugin', 'PedrolloPL.Process.P2', GETDATE(), GETDATE(
 INSERT INTO [DiunaBI-PedrolloPL].[dbo].[Records]
 ([Id], [Code], [Desc1], [CreatedAt], [ModifiedAt], [CreatedById], [ModifiedById], [IsDeleted], [LayerId])
 VALUES ((SELECT NEWID()), 'Priority', '110', GETDATE(), GETDATE(), '117be4f0-b5d1-41a1-a962-39dc30cce368', '117be4f0-b5d1-41a1-a962-39dc30cce368', 0, @LayerId);
+--
+INSERT INTO [DiunaBI-PedrolloPL].[dbo].[Records]
+([Id], [Code], [Desc1], [CreatedAt], [ModifiedAt], [CreatedById], [ModifiedById], [IsDeleted], [LayerId])
+VALUES ((SELECT NEWID()), 'GoogleSheetId', '1jI-3QrlBADm5slEl2Balf29cKmHwkYi4pboaHY-gRqc', GETDATE(), GETDATE(), '117be4f0-b5d1-41a1-a962-39dc30cce368', '117be4f0-b5d1-41a1-a962-39dc30cce368', 0, @LayerId);
+
+INSERT INTO [DiunaBI-PedrolloPL].[dbo].[Records]
+([Id], [Code], [Desc1], [CreatedAt], [ModifiedAt], [CreatedById], [ModifiedById], [IsDeleted], [LayerId])
+VALUES ((SELECT NEWID()), 'GoogleSheetTab', 'P2_Export_DiunaBI', GETDATE(), GETDATE(), '117be4f0-b5d1-41a1-a962-39dc30cce368', '117be4f0-b5d1-41a1-a962-39dc30cce368', 0, @LayerId);
+
+INSERT INTO [DiunaBI-PedrolloPL].[dbo].[Records]
+([Id], [Code], [Desc1], [CreatedAt], [ModifiedAt], [CreatedById], [ModifiedById], [IsDeleted], [LayerId])
+VALUES ((SELECT NEWID()), 'GoogleSheetRange', 'C32:O48', GETDATE(), GETDATE(), '117be4f0-b5d1-41a1-a962-39dc30cce368', '117be4f0-b5d1-41a1-a962-39dc30cce368', 0, @LayerId);
+

DiunaBI.Infrastructure/Services/JobSchedulerService.cs

@@ -40,6 +40,7 @@ public class JobSchedulerService
         _logger.LogInformation("JobScheduler: Found {Count} import workers to schedule", importWorkers.Count);
 
         var jobsCreated = 0;
+        var scheduledLayerIds = new HashSet<Guid>(); // Track LayerIds scheduled in this batch
 
         foreach (var worker in importWorkers)
         {
@@ -61,7 +62,15 @@ public class JobSchedulerService
                 var maxRetriesStr = worker.Records?.FirstOrDefault(r => r.Code == "MaxRetries")?.Desc1;
                 var maxRetries = int.TryParse(maxRetriesStr, out var mr) ? mr : 3;
 
-                // Check if there's already a pending/running job for this layer
+                // Check in-memory: already scheduled in this batch?
+                if (scheduledLayerIds.Contains(worker.Id))
+                {
+                    _logger.LogDebug("JobScheduler: Job already scheduled in this batch for {LayerName} ({LayerId})",
+                        worker.Name, worker.Id);
+                    continue;
+                }
+
+                // Check if there's already a pending/running job for this layer in database
                 var existingJob = await _db.QueueJobs
                     .Where(j => j.LayerId == worker.Id &&
                                 (j.Status == JobStatus.Pending || j.Status == JobStatus.Running))
@@ -91,6 +100,7 @@ public class JobSchedulerService
                 };
 
                 _db.QueueJobs.Add(job);
+                scheduledLayerIds.Add(worker.Id); // Track that we've scheduled this layer
                 jobsCreated++;
 
                 _logger.LogInformation("JobScheduler: Created import job for {LayerName} ({LayerId}) with priority {Priority}",
@@ -129,6 +139,7 @@ public class JobSchedulerService
         _logger.LogInformation("JobScheduler: Found {Count} process workers to schedule", processWorkers.Count);
 
         var jobsCreated = 0;
+        var scheduledLayerIds = new HashSet<Guid>(); // Track LayerIds scheduled in this batch
 
         foreach (var worker in processWorkers)
         {
@@ -150,7 +161,15 @@ public class JobSchedulerService
                 var maxRetriesStr = worker.Records?.FirstOrDefault(r => r.Code == "MaxRetries")?.Desc1;
                 var maxRetries = int.TryParse(maxRetriesStr, out var mr) ? mr : 3;
 
-                // Check if there's already a pending/running job for this layer
+                // Check in-memory: already scheduled in this batch?
+                if (scheduledLayerIds.Contains(worker.Id))
+                {
+                    _logger.LogDebug("JobScheduler: Job already scheduled in this batch for {LayerName} ({LayerId})",
+                        worker.Name, worker.Id);
+                    continue;
+                }
+
+                // Check if there's already a pending/running job for this layer in database
                 var existingJob = await _db.QueueJobs
                     .Where(j => j.LayerId == worker.Id &&
                                 (j.Status == JobStatus.Pending || j.Status == JobStatus.Running))
@@ -180,6 +199,7 @@ public class JobSchedulerService
                 };
 
                 _db.QueueJobs.Add(job);
+                scheduledLayerIds.Add(worker.Id); // Track that we've scheduled this layer
                 jobsCreated++;
 
                 _logger.LogInformation("JobScheduler: Created process job for {LayerName} ({LayerId}) with priority {Priority}",