feat: Separate highlightedKanji extraction & expose it

src/Entity/Note.php

@@ -77,26 +77,16 @@ class Note
         // Set VocabKanji field
         $note->terms = Term::fromNoteFields($note->fields);
 
-        // If not defined, find them from the highlighted parts in the sentence
+        // If unable to, create them from the highlighted parts in the sentence
         if (empty($note->terms)) {
-            // 1. Get all spans in the text
+            foreach ($note->getHighlightedKanji() as $highlighedKanji) {
-            preg_match_all(
-                self::HIGHLIGHT_PATTERN,
-                $note->fields['SentKanji'],
-                $matches,
-                PREG_SET_ORDER,
-            );
-            // 2. Check the ones that match with the kanji color
-            foreach ($matches as $match) {
-                if ($match[1] === self::HIGHLIGHT_ATTR_KANJI) {
                 $term = new Term();
-                    $term->kanji = mb_trim($match[2]);
+                $term->kanji = $highlighedKanji;
                 $term->definitionEn = null;
                 $term->definitionJp = null;
                 $note->terms[] = $term;
             }
         }
-        }
 
         // Set to null whatever is null
         $readings = array_map(
@@ -116,6 +106,30 @@ class Note
         return $note;
     }
 
+    /** Return an array of strings with the highlighted kanji in the SentKanji */
+    public function getHighlightedKanji(): array
+    {
+        $ret = [];
+        $matches = [];
+
+        // 1. Get all spans in the text
+        preg_match_all(
+            self::HIGHLIGHT_PATTERN,
+            $this->fields['SentKanji'],
+            $matches,
+            PREG_SET_ORDER,
+        );
+
+        // 2. Check the ones that match with the kanji color
+        foreach ($matches as $match) {
+            if ($match[1] === self::HIGHLIGHT_ATTR_KANJI) {
+                $ret[] = mb_trim($match[2]);
+            }
+        }
+
+        return $ret;
+    }
+
     public function toAnki(): array
     {
         return [