n8n/packages/nodes-base/nodes/Microsoft/Excel/v2/actions/router.ts

import type { IExecuteFunctions, INodeExecutionData } from 'n8n-workflow';
import { NodeOperationError } from 'n8n-workflow';

import type { MicrosoftExcel } from './node.type';
import * as table from './table/Table.resource';
import * as workbook from './workbook/Workbook.resource';
import * as worksheet from './worksheet/Worksheet.resource';

export async function router(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
	const items = this.getInputData();
	let returnData: INodeExecutionData[] = [];

	const resource = this.getNodeParameter<MicrosoftExcel>('resource', 0);
	const operation = this.getNodeParameter('operation', 0);

	const microsoftExcel = {
		resource,
		operation,
	} as MicrosoftExcel;

	switch (microsoftExcel.resource) {
		case 'table':
			returnData = await table[microsoftExcel.operation].execute.call(this, items);
			break;
		case 'workbook':
			returnData = await workbook[microsoftExcel.operation].execute.call(this, items);
			break;
		case 'worksheet':
			returnData = await worksheet[microsoftExcel.operation].execute.call(this, items);
			break;
		default:
			throw new NodeOperationError(this.getNode(), `The resource "${resource}" is not known`);
	}

	return [returnData];
}