feat: initial work to prevent giving points for copy-pasted text (#2345)

* feat: initial work to prevent giving points for copy-pasted text

* chore: replace tokenization with comparing token content with pasted content

lib/pangea/choreographer/controllers/choreographer.dart

@@ -66,11 +66,7 @@ class Choreographer {
   _initialize() {
     tts = TtsController(chatController: chatController);
     _textController = PangeaTextController(choreographer: this);
-    InputPasteListener(
-      _textController,
-      // TODO, do something on paste
-      () => debugPrint("on paste"),
-    );
+    InputPasteListener(_textController, onPaste);
     itController = ITController(this);
     igc = IgcController(this);
     errorService = ErrorService(this);
@@ -571,6 +567,10 @@ class Choreographer {
     giveInputFocus();
   }
 
+  Future<void> onPaste(value) async {
+    choreoRecord.pastedStrings.add(value);
+  }
+
   dispose() {
     _textController.dispose();
     _trialStream?.cancel();

lib/pangea/choreographer/models/choreo_record.dart

@@ -16,10 +16,10 @@ class ChoreoRecord {
   /// there is not a 1-to-1 map from steps to matches
   List<ChoreoRecordStep> choreoSteps;
 
-  // String current;
-
   List<PangeaMatch> openMatches;
 
+  final Set<String> pastedStrings = {};
+
   ChoreoRecord({
     required this.choreoSteps,
     required this.openMatches,

lib/pangea/choreographer/utils/input_paste_listener.dart

@@ -5,7 +5,7 @@ import 'package:fluffychat/pangea/choreographer/widgets/igc/pangea_text_controll
 
 class InputPasteListener {
   final PangeaTextController controller;
-  final VoidCallback onPaste;
+  final Function(String) onPaste;
 
   String _currentText = '';
 
@@ -14,10 +14,18 @@ class InputPasteListener {
     this.onPaste,
   ) {
     controller.addListener(() {
-      if (controller.editType != EditType.keyboard) return;
       final difference =
           controller.text.characters.length - _currentText.characters.length;
-      if (difference > 1) onPaste();
+      if (difference > 1 && controller.editType == EditType.keyboard) {
+        onPaste(
+          controller.text.characters
+              .getRange(
+                _currentText.characters.length,
+                controller.text.characters.length,
+              )
+              .join(),
+        );
+      }
       _currentText = controller.text;
     });
   }

lib/pangea/events/models/representation_content_model.dart

@@ -119,8 +119,19 @@ class PangeaRepresentation {
     );
 
     // for each token, record whether selected in ga, ta, or wa
-    final tokensToSave =
+    List<PangeaToken> tokensToSave =
         tokens.where((token) => token.lemma.saveVocab).toList();
+    if (choreo != null && choreo.pastedStrings.isNotEmpty) {
+      tokensToSave = tokensToSave
+          .where(
+            (token) => !choreo.pastedStrings.any(
+              (pasted) => pasted
+                  .toLowerCase()
+                  .contains(token.text.content.toLowerCase()),
+            ),
+          )
+          .toList();
+    }
     for (final token in tokensToSave) {
       uses.addAll(
         _getUsesForToken(