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lib/db/cache/schemas/image.dart

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+import 'package:isar/isar.dart';
+
+part '../image.g.dart';
+
+/// Represents a cover image for a library item
+///
+/// stores 2 paths, one is thumbnail and the other is the full size image
+/// both are optional
+/// also stores last fetched date for the image
+/// Id is passed as a parameter to the collection annotation (the lib_item_id)
+/// also index the id
+/// This is because the image is a part of the library item and the library item
+/// is the parent of the image
+@Collection(ignore: {'path'})
+@Name('CacheImage')
+class Image {
+  @Id()
+  int id;
+
+  String? thumbnailPath;
+  String? imagePath;
+  DateTime lastSaved;
+
+  Image({
+    required this.id,
+    this.thumbnailPath,
+    this.imagePath,
+  }) : lastSaved = DateTime.now();
+
+  /// returns the path to the image
+  String? get path => thumbnailPath ?? imagePath;
+
+  /// automatically updates the last fetched date when saving a new path
+  void updatePath(String? thumbnailPath, String? imagePath) async {
+    this.thumbnailPath = thumbnailPath;
+    this.imagePath = imagePath;
+    lastSaved = DateTime.now();
+  }
+}