feat: add onboarding with oldmarr import (#1606)

packages/old-import/src/prepare/prepare-multiple.ts

@@ -0,0 +1,25 @@
+import type { AnalyseConfig, ValidAnalyseConfig } from "../analyse/types";
+import type { BoardSelectionMap } from "../components/initial/board-selection-card";
+import type { InitialOldmarrImportSettings } from "../settings";
+import { prepareApps } from "./prepare-apps";
+import { prepareBoards } from "./prepare-boards";
+import { prepareIntegrations } from "./prepare-integrations";
+
+export const prepareMultipleImports = (
+  analyseConfigs: AnalyseConfig[],
+  settings: InitialOldmarrImportSettings,
+  selections: BoardSelectionMap,
+) => {
+  const invalidConfigs = analyseConfigs.filter((item) => item.config === null);
+  invalidConfigs.forEach(({ name }) => {
+    console.warn(`Skipping import of ${name} due to error in configuration. See logs of container for more details.`);
+  });
+
+  const filteredConfigs = analyseConfigs.filter((item): item is ValidAnalyseConfig => item.config !== null);
+
+  return {
+    preparedApps: prepareApps(filteredConfigs),
+    preparedBoards: settings.onlyImportApps ? [] : prepareBoards(filteredConfigs, selections),
+    preparedIntegrations: prepareIntegrations(filteredConfigs),
+  };
+};