Major 3.0 (#118)

Co-authored-by: Maison da Silva <maisonmdsgreen@hotmail.com>

features/collectionStorage/utils/getCollections.ts

@@ -0,0 +1,41 @@
+import { trackError } from "@/features/analytics";
+import { CollectionItem } from "@/models/CollectionModels";
+import getLogger from "@/utils/getLogger";
+import { collectionStorage } from "./collectionStorage";
+import getCollectionsFromCloud from "./getCollectionsFromCloud";
+import getCollectionsFromLocal from "./getCollectionsFromLocal";
+import saveCollectionsToLocal from "./saveCollectionsToLocal";
+
+const logger = getLogger("getCollections");
+
+export default async function getCollections(): Promise<[CollectionItem[], CloudStorageIssueType | null]>
+{
+	if (await collectionStorage.disableCloud.getValue() === true)
+		return [await getCollectionsFromLocal(), null];
+
+	const lastUpdatedLocal: number = await collectionStorage.localLastUpdated.getValue();
+	const lastUpdatedSync: number = await collectionStorage.syncLastUpdated.getValue();
+
+	if (lastUpdatedLocal === lastUpdatedSync)
+		return [await getCollectionsFromLocal(), null];
+
+	if (lastUpdatedLocal > lastUpdatedSync)
+		return [await getCollectionsFromLocal(), "merge_conflict"];
+
+	try
+	{
+		const collections: CollectionItem[] = await getCollectionsFromCloud();
+		await saveCollectionsToLocal(collections, lastUpdatedSync);
+
+		return [collections, null];
+	}
+	catch (ex)
+	{
+		logger("Failed to get cloud storage");
+		console.error(ex);
+		trackError("cloud_get_error", ex as Error);
+		return [await getCollectionsFromLocal(), "parse_error"];
+	}
+}
+
+export type CloudStorageIssueType = "parse_error" | "merge_conflict";