Add files via upload

filcnaplo_kreta_api/lib/models/attachment.dart

@@ -0,0 +1,32 @@
+import 'package:file_picker/file_picker.dart';
+import 'package:filcnaplo_kreta_api/client/api.dart';
+
+class Attachment {
+  Map? json;
+  int id;
+  PlatformFile? file;
+  String name;
+  String? fileId;
+  String kretaFilePath;
+
+  Attachment({
+    required this.id,
+    this.file,
+    required this.name,
+    this.fileId,
+    required this.kretaFilePath,
+    this.json,
+  });
+
+  factory Attachment.fromJson(Map json) {
+    return Attachment(
+      id: json["azonosito"],
+      name: (json["fajlNev"] ?? "attachment").trim(),
+      kretaFilePath: json["utvonal"] ?? "",
+      json: json,
+    );
+  }
+
+  String get downloadUrl => KretaAPI.downloadAttachment(id.toString());
+  bool get isImage => name.endsWith(".jpg") || name.endsWith(".jpeg") || name.endsWith(".png");
+}