n8n/packages/nodes-base/nodes/Microsoft/SharePoint/descriptions/item/get.operation.ts

import type { IExecuteSingleFunctions, IHttpRequestOptions, INodeProperties } from 'n8n-workflow';
import { updateDisplayOptions } from 'n8n-workflow';

import {
	itemRLC,
	listRLC,
	siteRLC,
	untilListSelected,
	untilSiteSelected,
} from '../common.descriptions';

const properties: INodeProperties[] = [
	{
		...siteRLC,
		description: 'Select the site to retrieve lists from',
	},
	{
		...listRLC,
		description: 'Select the list you want to retrieve an item from',
		displayOptions: {
			hide: {
				...untilSiteSelected,
			},
		},
	},
	{
		...itemRLC,
		description: 'Select the item you want to get',
		displayOptions: {
			hide: {
				...untilSiteSelected,
				...untilListSelected,
			},
		},
	},
	{
		displayName: 'Simplify',
		name: 'simplify',
		default: true,
		routing: {
			send: {
				preSend: [
					async function (
						this: IExecuteSingleFunctions,
						requestOptions: IHttpRequestOptions,
					): Promise<IHttpRequestOptions> {
						const simplify = this.getNodeParameter('simplify', false) as boolean;
						if (simplify) {
							requestOptions.qs ??= {};
							requestOptions.qs.$select = 'id,createdDateTime,lastModifiedDateTime,webUrl';
							requestOptions.qs.$expand = 'fields(select=Title)';
						}
						return requestOptions;
					},
				],
			},
		},
		type: 'boolean',
	},
];

const displayOptions = {
	show: {
		resource: ['item'],
		operation: ['get'],
	},
};

export const description = updateDisplayOptions(displayOptions, properties);