feat: add onboarding with oldmarr import (#1606)

packages/old-import/src/import/import-single-oldmarr.ts

@@ -0,0 +1,36 @@
+import { inArray } from "@homarr/db";
+import type { Database } from "@homarr/db";
+import { apps } from "@homarr/db/schema/sqlite";
+import type { OldmarrConfig } from "@homarr/old-schema";
+
+import { doAppsMatch } from "../prepare/prepare-apps";
+import { prepareSingleImport } from "../prepare/prepare-single";
+import type { OldmarrImportConfiguration } from "../settings";
+import { createBoardInsertCollection } from "./collections/board-collection";
+
+export const importSingleOldmarrConfigAsync = async (
+  db: Database,
+  config: OldmarrConfig,
+  settings: OldmarrImportConfiguration,
+) => {
+  const { preparedApps, preparedBoards } = prepareSingleImport(config, settings);
+  const existingApps = await db.query.apps.findMany({
+    where: inArray(
+      apps.href,
+      preparedApps.map((app) => app.href).filter((href) => href !== null),
+    ),
+  });
+
+  preparedApps.forEach((app) => {
+    const existingApp = existingApps.find((existingApp) => doAppsMatch(existingApp, app));
+    if (existingApp) {
+      app.existingId = existingApp.id;
+    }
+    return app;
+  });
+
+  const boardInsertCollection = createBoardInsertCollection({ preparedApps, preparedBoards }, settings);
+
+  // Due to a limitation with better-sqlite it's only possible to use it synchronously
+  boardInsertCollection.insertAll(db);
+};