additional, improved transformers / skipIf to eliminate records

src/TransformerEngine.php

@@ -8,6 +8,7 @@ use UbsCsvTransformer\ConfigurationLoader;
 use UbsCsvTransformer\MetadataExtractor;
 use UbsCsvTransformer\ColumnTransformer;
 use UbsCsvTransformer\FireflyImporter;
+use UbsCsvTransformer\RowFilter;
 
 /**
  * Orchestrates the complete CSV transformation pipeline
@@ -48,6 +49,9 @@ class TransformerEngine
     {
         $this->configLoader = $configLoader;
         $this->debugMode = $debugMode;
+        if ($debugMode) {
+            DebugLogger::enable();
+        }
 
         $config = $configLoader->getAll();
 
@@ -163,12 +167,21 @@ class TransformerEngine
             // Transform rows and collect them
             $transformedData = [];
 
+            /** @var array<string, mixed>|null $skipIfNode */
+            $skipIfNode = $this->configLoader->get('skipIf', null);
+
             foreach ($dataRows as $row) {
                 // Check if maxRows reached
                 if ($maxRows > 0 && $this->rowsProcessed >= $maxRows) {
                     break;
                 }
 
+                // Skip row if filter condition matches
+                if ($skipIfNode !== null && RowFilter::evaluate($skipIfNode, $row)) {
+                    DebugLogger::log('transformer', 'Row skipped by skipIf filter', ['row' => $row]);
+                    continue;
+                }
+
                 // Transform row
                 $transformedRow = $this->columnTransformer->transformRow($row);
                 $transformedData[] = $transformedRow;