new project stable version

lib/presentation/components/utils/card_formatter.dart

@@ -0,0 +1,49 @@
+import 'package:flutter/services.dart';
+
+class CardNumberFormatter extends TextInputFormatter {
+  @override
+  TextEditingValue formatEditUpdate(
+      TextEditingValue oldValue,
+      TextEditingValue newValue,
+      ) {
+    var text = newValue.text.replaceAll(' ', '');
+    var buffer = StringBuffer();
+    for (int i = 0; i < text.length; i++) {
+      buffer.write(text[i]);
+      var nonZeroIndex = i + 1;
+      if (nonZeroIndex % 4 == 0 && nonZeroIndex != text.length) {
+        buffer.write(' '); // Добавляем пробел каждые 4 цифры
+      }
+    }
+    var string = buffer.toString();
+    return newValue.copyWith(
+      text: string,
+      selection: TextSelection.collapsed(offset: string.length),
+    );
+  }
+}
+
+class CardMonthInputFormatter extends TextInputFormatter {
+  @override
+  TextEditingValue formatEditUpdate(
+      TextEditingValue oldValue,
+      TextEditingValue newValue,
+      ) {
+    var newText = newValue.text;
+    if (newValue.selection.baseOffset == 0) return newValue;
+
+    var buffer = StringBuffer();
+    for (int i = 0; i < newText.length; i++) {
+      buffer.write(newText[i]);
+      var nonZeroIndex = i + 1;
+      if (nonZeroIndex % 2 == 0 && nonZeroIndex != newText.length) {
+        buffer.write('/'); // Добавляем слэш после 2-й цифры
+      }
+    }
+    var string = buffer.toString();
+    return newValue.copyWith(
+      text: string,
+      selection: TextSelection.collapsed(offset: string.length),
+    );
+  }
+}