handle trigger_label as a regex to show the graph of detectors

app/Http/Controllers/MarkController.php

@@ -98,22 +98,50 @@ class MarkController extends Controller
     public function rankingHome()
     {
         $activation_graph_elements = [];
-        $activation = $this->server()->activation();
-        foreach ($activation as $detector) {
-            // nodes
+        $detectors = $this->server()->activation();
+
+        // nodes
+        foreach ($detectors as $detector) {
+            // node
             $activation_graph_elements[] = ["data" => ["id" => $detector->label]];
-            $activation_graph_elements[] = ["data" => ["id" => $detector->trigger_label]];
 
             // edges
-            $activation_graph_elements[] = ["data" => [
-                "id" => rand(),
-                "source" => $detector->trigger_label,
-                "target" => $detector->label]];
+            $sources = $this->findSources($detectors, $detector);
+            foreach ($sources as $source) {
+                $activation_graph_elements[] = ["data" => [
+                    "id" => rand(),
+                    "source" => $source,
+                    "target" => $detector->label]];
+            }
+
+            if (count($sources) == 0) {
+                // the trigger_label for this detector is a data source
+                // => create node + edge
+                $activation_graph_elements[] = ["data" => ["id" => $detector->trigger_label]];
+                $activation_graph_elements[] = ["data" => [
+                    "id" => rand(),
+                    "source" => $detector->trigger_label,
+                    "target" => $detector->label]];
+            }
         }
 
         return view("app.detectors", ["activation_graph_elements" => $activation_graph_elements]);
     }
 
+    private function findSources(array $all_detectors, $detector)
+    {
+
+        $pattern = '/' . $detector->trigger_label . '/';
+        $sources = [];
+        foreach ($all_detectors as $d) {
+            if (preg_match($pattern, $d->label)) {
+                $sources[] = $d->label;
+            }
+        }
+
+        return $sources;
+    }
+
     public function extractPoints(array $evidences, string $field) : array
     {
         $points = [];