n8n/packages/nodes-base/nodes/Mattermost/v1/actions/channel/members/execute.ts

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

import { apiRequest, apiRequestAllItems } from '../../../transport';

export async function members(
	this: IExecuteFunctions,
	index: number,
): Promise<INodeExecutionData[]> {
	const channelId = this.getNodeParameter('channelId', index) as string;
	const returnAll = this.getNodeParameter('returnAll', index);
	const resolveData = this.getNodeParameter('resolveData', index);
	const limit = this.getNodeParameter('limit', index, 0);

	const body = {} as IDataObject;
	const qs = {} as IDataObject;
	const requestMethod = 'GET';
	const endpoint = `channels/${channelId}/members`;

	if (!returnAll) {
		qs.per_page = this.getNodeParameter('limit', index);
	}

	let responseData;

	if (returnAll) {
		responseData = await apiRequestAllItems.call(this, requestMethod, endpoint, body, qs);
	} else {
		responseData = await apiRequest.call(this, requestMethod, endpoint, body, qs);
		if (limit) {
			responseData = responseData.slice(0, limit);
		}
		if (resolveData) {
			const userIds: string[] = [];
			for (const data of responseData) {
				userIds.push(data.user_id as string);
			}
			if (userIds.length > 0) {
				responseData = await apiRequest.call(this, 'POST', 'users/ids', userIds, qs);
			}
		}
	}

	return this.helpers.returnJsonArray(responseData as IDataObject[]);
}