feat: implement web service

Signed-off-by: The one with the braid <info@braid.business>

lib/pkpass/utils/mabe_decode.dart

@@ -0,0 +1,29 @@
+import '../models/pass_structure_dictionary.dart';
+import 'color_helper.dart';
+
+abstract class MaybeDecode {
+  const MaybeDecode._();
+
+  static int? maybeColor(String? colorCode) {
+    if (colorCode == null) return null;
+    return fromCssColor(colorCode);
+  }
+
+  static DateTime? maybeDateTime(String? timeStamp) {
+    if (timeStamp == null) return null;
+    return DateTime.tryParse(timeStamp);
+  }
+
+  static PassTextAlign? maybeTextAlign(String? align) {
+    switch (align) {
+      case 'PKTextAlignmentLeft':
+        return PassTextAlign.left;
+      case 'PKTextAlignmentCenter':
+        return PassTextAlign.center;
+      case 'PKTextAlignmentRight':
+        return PassTextAlign.right;
+      default:
+        return PassTextAlign.natural;
+    }
+  }
+}