WIP - Reimplemented document search

lib/features/paged_document_view/model/paged_documents_state.dart

@@ -0,0 +1,82 @@
+import 'package:equatable/equatable.dart';
+import 'package:paperless_api/paperless_api.dart';
+
+///
+/// Base state for all blocs/cubits using a paged view of documents.
+/// [T] is the return type of the API call.
+///
+abstract class PagedDocumentsState extends Equatable {
+  final bool hasLoaded;
+  final bool isLoading;
+  final List<PagedSearchResult<DocumentModel>> value;
+  final DocumentFilter filter;
+
+  const PagedDocumentsState({
+    this.value = const [],
+    this.hasLoaded = false,
+    this.isLoading = false,
+    this.filter = const DocumentFilter(),
+  });
+
+  List<DocumentModel> get documents {
+    return value.fold(
+      [],
+      (previousValue, element) => [
+        ...previousValue,
+        ...element.results,
+      ],
+    );
+  }
+
+  int get currentPageNumber {
+    assert(value.isNotEmpty);
+    return value.last.pageKey;
+  }
+
+  int? get nextPageNumber {
+    return isLastPageLoaded ? null : currentPageNumber + 1;
+  }
+
+  int get count {
+    if (value.isEmpty) {
+      return 0;
+    }
+    return value.first.count;
+  }
+
+  bool get isLastPageLoaded {
+    if (!hasLoaded) {
+      return false;
+    }
+    if (value.isNotEmpty) {
+      return value.last.next == null;
+    }
+    return true;
+  }
+
+  int inferPageCount({required int pageSize}) {
+    if (!hasLoaded) {
+      return 100000;
+    }
+    if (value.isEmpty) {
+      return 0;
+    }
+    return value.first.inferPageCount(pageSize: pageSize);
+  }
+
+  // Return type has to be dynamic
+  dynamic copyWithPaged({
+    bool? hasLoaded,
+    bool? isLoading,
+    List<PagedSearchResult<DocumentModel>>? value,
+    DocumentFilter? filter,
+  });
+
+  @override
+  List<Object?> get props => [
+        filter,
+        value,
+        hasLoaded,
+        isLoading,
+      ];
+}