n8n/packages/nodes-base/nodes/Stackby/Stackby.node.ts

import {
	IExecuteFunctions,
} from 'n8n-core';

import {
	IDataObject,
	INodeExecutionData,
	INodeType,
	INodeTypeDescription,
} from 'n8n-workflow';

import {
	apiRequest,
	apiRequestAllItems,
	IRecord,
} from './GenericFunction';

export class Stackby implements INodeType {
	description: INodeTypeDescription = {
		displayName: 'Stackby',
		name: 'stackby',
		icon: 'file:stackby.png',
		group: ['transform'],
		version: 1,
		description: 'Consume Stackby REST API',
		defaults: {
			name: 'Stackby',
			color: '#772244',
		},
		inputs: ['main'],
		outputs: ['main'],
		credentials: [
			{
				name: 'stackbyApi',
				required: true,
			},
		],
		properties: [
			{
				displayName: 'Operation',
				name: 'operation',
				type: 'options',
				options: [
					{
						name: 'Append',
						value: 'append',
					},
					{
						name: 'Delete',
						value: 'delete',
					},
					{
						name: 'List',
						value: 'list',
					},
					{
						name: 'Read',
						value: 'read',
					},
				],
				default: 'append',
				placeholder: 'Action to perform',
			},
			// ----------------------------------
			//         All
			// ----------------------------------
			{
				displayName: 'Stack ID',
				name: 'stackId',
				type: 'string',
				default: '',
				required: true,
				description: 'The ID of the stack to access.',
			},
			{
				displayName: 'Table',
				name: 'table',
				type: 'string',
				default: '',
				placeholder: 'Stories',
				required: true,
				description: 'Enter Table Name',
			},

			// ----------------------------------
			//         read
			// ----------------------------------
			{
				displayName: 'ID',
				name: 'id',
				type: 'string',
				displayOptions: {
					show: {
						operation: [
							'read',
							'delete',
						],
					},
				},
				default: '',
				required: true,
				description: 'ID of the record to return.',
			},

			// ----------------------------------
			//         list
			// ----------------------------------
			{
				displayName: 'Return All',
				name: 'returnAll',
				type: 'boolean',
				displayOptions: {
					show: {
						operation: [
							'list',
						],
					},
				},
				default: true,
				description: 'If all results should be returned or only up to a given limit.',
			},
			{
				displayName: 'Limit',
				name: 'limit',
				type: 'number',
				displayOptions: {
					show: {
						'operation': [
							'list',
						],
						'returnAll': [
							false,
						],
					},
				},
				typeOptions: {
					minValue: 1,
					maxValue: 1000,
				},
				default: 1000,
				description: 'Number of results to return.',
			},
			{
				displayName: 'Additional Fields',
				name: 'additionalFields',
				type: 'collection',
				displayOptions: {
					show: {
						operation: [
							'list',
						],
					},
				},
				default: {},
				placeholder: 'Add Field',
				options: [
					{
						displayName: 'View',
						name: 'view',
						type: 'string',
						default: '',
						placeholder: 'All Stories',
						description: 'The name or ID of a view in the Stories table. If set,<br />only the records in that view will be returned. The records<br />will be sorted according to the order of the view.',
					},
				],
			},
			// ----------------------------------
			//         append
			// ----------------------------------
			{
				displayName: 'Columns',
				name: 'columns',
				type: 'string',
				displayOptions: {
					show: {
						operation: [
							'append',
						],
					},
				},
				default: '',
				required: true,
				placeholder: 'id,name,description',
				description: 'Comma separated list of the properties which should used as columns for the new rows.',
			},
		],
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const returnData: IDataObject[] = [];
		const length = items.length as unknown as number;
		let responseData;
		const qs: IDataObject = {};
		const operation = this.getNodeParameter('operation', 0) as string;
		if (operation === 'read') {
			for (let i = 0; i < length; i++) {
				const stackId = this.getNodeParameter('stackId', i) as string;
				const table = encodeURI(this.getNodeParameter('table', i) as string);
				const rowIds = this.getNodeParameter('id', i) as string;
				qs.rowIds = [rowIds];
				responseData = await apiRequest.call(this, 'GET', `/rowlist/${stackId}/${table}`, {}, qs);
				// tslint:disable-next-line: no-any
				returnData.push.apply(returnData, responseData.map((data: any) => data.field));
			}
		}
		if (operation === 'delete') {
			for (let i = 0; i < length; i++) {
				const stackId = this.getNodeParameter('stackId', i) as string;
				const table = encodeURI(this.getNodeParameter('table', i) as string);
				const rowIds = this.getNodeParameter('id', i) as string;
				qs.rowIds = [rowIds];

				responseData = await apiRequest.call(this, 'DELETE', `/rowdelete/${stackId}/${table}`, {}, qs);
				responseData = responseData.records;
				returnData.push.apply(returnData, responseData);
			}
		}

		if (operation === 'append') {
			const records: { [key: string]: IRecord[] } = {};
			let key = '';
			for (let i = 0; i < length; i++) {
				const stackId = this.getNodeParameter('stackId', i) as string;
				const table = encodeURI(this.getNodeParameter('table', i) as string);
				const columns = this.getNodeParameter('columns', i) as string;
				const columnList = columns.split(',').map(column => column.trim());

				// tslint:disable-next-line: no-any
				const record: { [key: string]: any } = {};
				for (const column of columnList) {
					if (items[i].json[column] === undefined) {
						throw new Error(`Column ${column} does not exist on input`);
					} else {
						record[column] = items[i].json[column];
					}
				}
				key = `${stackId}/${table}`;

				if (records[key] === undefined) {
					records[key] = [];
				}
				records[key].push({ field: record });
			}

			for (const key of Object.keys(records)) {
				responseData = await apiRequest.call(this, 'POST', `/rowcreate/${key}`, { records: records[key] });
			}

			// tslint:disable-next-line: no-any
			returnData.push.apply(returnData, responseData.map((data: any) => data.field));
		}

		if (operation === 'list') {
			for (let i = 0; i < length; i++) {
				const stackId = this.getNodeParameter('stackId', i) as string;
				const table = encodeURI(this.getNodeParameter('table', i) as string);
				const returnAll = this.getNodeParameter('returnAll', 0) as boolean;

				const additionalFields = this.getNodeParameter('additionalFields', i, {}) as IDataObject;

				if (additionalFields.view) {
					qs.view = additionalFields.view;
				}

				if (returnAll === true) {
					responseData = await apiRequestAllItems.call(this, 'GET', `/rowlist/${stackId}/${table}`, {}, qs);
				} else {
					qs.maxrecord = this.getNodeParameter('limit', 0) as number;
					responseData = await apiRequest.call(this, 'GET', `/rowlist/${stackId}/${table}`, {}, qs);
				}

				// tslint:disable-next-line: no-any
				returnData.push.apply(returnData, responseData.map((data: any) => data.field));
			}
		}
		return [this.helpers.returnJsonArray(returnData)];
	}
}