n8n/packages/nodes-base/nodes/SpreadsheetFile/SpreadsheetFile.node.ts
कारतोफ्फेलस्क्रिप्ट™ 5eb0d52459
refactor: Unify binary-data assertion across all nodes (no-changelog) (#5624)
2023-03-06 17:33:32 +01:00

498 lines
13 KiB
TypeScript

import type {
IDataObject,
IExecuteFunctions,
INodeExecutionData,
INodeType,
INodeTypeDescription,
} from 'n8n-workflow';
import { NodeOperationError } from 'n8n-workflow';
import type { JSON2SheetOpts, Sheet2JSONOpts, WorkBook, WritingOptions } from 'xlsx';
import { read as xlsxRead, utils as xlsxUtils, write as xlsxWrite } from 'xlsx';
/**
* Flattens an object with deep data
*
* @param {IDataObject} data The object to flatten
*/
function flattenObject(data: IDataObject) {
const returnData: IDataObject = {};
for (const key1 of Object.keys(data)) {
if (data[key1] !== null && typeof data[key1] === 'object') {
if (data[key1] instanceof Date) {
returnData[key1] = data[key1]?.toString();
continue;
}
const flatObject = flattenObject(data[key1] as IDataObject);
for (const key2 in flatObject) {
if (flatObject[key2] === undefined) {
continue;
}
returnData[`${key1}.${key2}`] = flatObject[key2];
}
} else {
returnData[key1] = data[key1];
}
}
return returnData;
}
export class SpreadsheetFile implements INodeType {
description: INodeTypeDescription = {
displayName: 'Spreadsheet File',
name: 'spreadsheetFile',
icon: 'fa:table',
group: ['transform'],
version: 1,
description: 'Reads and writes data from a spreadsheet file like CSV, XLS, ODS, etc',
defaults: {
name: 'Spreadsheet File',
color: '#2244FF',
},
inputs: ['main'],
outputs: ['main'],
properties: [
{
displayName: 'Operation',
name: 'operation',
type: 'options',
noDataExpression: true,
options: [
{
name: 'Read From File',
value: 'fromFile',
description: 'Reads data from a spreadsheet file',
action: 'Read data from a spreadsheet file',
},
{
name: 'Write to File',
value: 'toFile',
description: 'Writes the workflow data to a spreadsheet file',
action: 'Write data to a spreadsheet file',
},
],
default: 'fromFile',
},
// ----------------------------------
// fromFile
// ----------------------------------
{
displayName: 'Binary Property',
name: 'binaryPropertyName',
type: 'string',
default: 'data',
required: true,
displayOptions: {
show: {
operation: ['fromFile'],
},
},
placeholder: '',
description:
'Name of the binary property from which to read the binary data of the spreadsheet file',
},
// ----------------------------------
// toFile
// ----------------------------------
{
displayName: 'File Format',
name: 'fileFormat',
type: 'options',
options: [
{
name: 'CSV',
value: 'csv',
description: 'Comma-separated values',
},
{
name: 'HTML',
value: 'html',
description: 'HTML Table',
},
{
name: 'ODS',
value: 'ods',
description: 'OpenDocument Spreadsheet',
},
{
name: 'RTF',
value: 'rtf',
description: 'Rich Text Format',
},
{
name: 'XLS',
value: 'xls',
description: 'Excel',
},
{
name: 'XLSX',
value: 'xlsx',
description: 'Excel',
},
],
default: 'xls',
displayOptions: {
show: {
operation: ['toFile'],
},
},
description: 'The format of the file to save the data as',
},
{
displayName: 'Binary Property',
name: 'binaryPropertyName',
type: 'string',
default: 'data',
required: true,
displayOptions: {
show: {
operation: ['toFile'],
},
},
placeholder: '',
description:
'Name of the binary property in which to save the binary data of the spreadsheet file',
},
{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Option',
default: {},
options: [
{
displayName: 'Compression',
name: 'compression',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['toFile'],
'/fileFormat': ['xlsx', 'ods'],
},
},
default: false,
description: 'Whether compression will be applied or not',
},
{
displayName: 'File Name',
name: 'fileName',
type: 'string',
displayOptions: {
show: {
'/operation': ['toFile'],
},
},
default: '',
description:
'File name to set in binary data. By default will "spreadsheet.<fileFormat>" be used.',
},
{
displayName: 'Header Row',
name: 'headerRow',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['fromFile', 'toFile'],
},
},
default: true,
description: 'Whether the first row of the file contains the header names',
},
{
displayName: 'Include Empty Cells',
name: 'includeEmptyCells',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['fromFile'],
},
},
default: false,
// eslint-disable-next-line n8n-nodes-base/node-param-description-boolean-without-whether
description:
'When reading from file the empty cells will be filled with an empty string in the JSON',
},
{
displayName: 'RAW Data',
name: 'rawData',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['fromFile'],
},
},
default: false,
description: 'Whether the data should be returned RAW instead of parsed',
},
{
displayName: 'Read As String',
name: 'readAsString',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['fromFile'],
},
},
default: false,
// eslint-disable-next-line n8n-nodes-base/node-param-description-boolean-without-whether
description:
'In some cases and file formats, it is necessary to read specifically as string else some special character get interpreted wrong',
},
{
displayName: 'Range',
name: 'range',
type: 'string',
displayOptions: {
show: {
'/operation': ['fromFile'],
},
},
default: '',
description:
'The range to read from the table. If set to a number it will be the starting row. If set to string it will be used as A1-style bounded range.',
},
{
displayName: 'Sheet Name',
name: 'sheetName',
type: 'string',
displayOptions: {
show: {
'/operation': ['fromFile'],
},
},
default: 'Sheet',
description:
'Name of the sheet to read from in the spreadsheet (if supported). If not set, the first one gets chosen.',
},
{
displayName: 'Sheet Name',
name: 'sheetName',
type: 'string',
displayOptions: {
show: {
'/operation': ['toFile'],
'/fileFormat': ['ods', 'xls', 'xlsx'],
},
},
default: 'Sheet',
description: 'Name of the sheet to create in the spreadsheet',
},
],
},
],
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const items = this.getInputData();
const operation = this.getNodeParameter('operation', 0);
const newItems: INodeExecutionData[] = [];
if (operation === 'fromFile') {
// Read data from spreadsheet file to workflow
for (let i = 0; i < items.length; i++) {
try {
const binaryPropertyName = this.getNodeParameter('binaryPropertyName', i);
const options = this.getNodeParameter('options', i, {});
this.helpers.assertBinaryData(i, binaryPropertyName);
// Read the binary spreadsheet data
const binaryDataBuffer = await this.helpers.getBinaryDataBuffer(i, binaryPropertyName);
let workbook;
if (options.readAsString === true) {
workbook = xlsxRead(binaryDataBuffer.toString(), {
type: 'string',
raw: options.rawData as boolean,
});
} else {
workbook = xlsxRead(binaryDataBuffer, { raw: options.rawData as boolean });
}
if (workbook.SheetNames.length === 0) {
throw new NodeOperationError(this.getNode(), 'Spreadsheet does not have any sheets!', {
itemIndex: i,
});
}
let sheetName = workbook.SheetNames[0];
if (options.sheetName) {
if (!workbook.SheetNames.includes(options.sheetName as string)) {
throw new NodeOperationError(
this.getNode(),
`Spreadsheet does not contain sheet called "${options.sheetName}"!`,
{ itemIndex: i },
);
}
sheetName = options.sheetName as string;
}
// Convert it to json
const sheetToJsonOptions: Sheet2JSONOpts = {};
if (options.range) {
if (isNaN(options.range as number)) {
sheetToJsonOptions.range = options.range;
} else {
sheetToJsonOptions.range = parseInt(options.range as string, 10);
}
}
if (options.includeEmptyCells) {
sheetToJsonOptions.defval = '';
}
if (options.headerRow === false) {
sheetToJsonOptions.header = 1; // Consider the first row as a data row
}
const sheetJson = xlsxUtils.sheet_to_json(workbook.Sheets[sheetName], sheetToJsonOptions);
// Check if data could be found in file
if (sheetJson.length === 0) {
continue;
}
// Add all the found data columns to the workflow data
if (options.headerRow === false) {
// Data was returned as an array - https://github.com/SheetJS/sheetjs#json
for (const rowData of sheetJson) {
newItems.push({
json: {
row: rowData,
},
pairedItem: {
item: i,
},
} as INodeExecutionData);
}
} else {
for (const rowData of sheetJson) {
newItems.push({
json: rowData,
pairedItem: {
item: i,
},
} as INodeExecutionData);
}
}
} catch (error) {
if (this.continueOnFail()) {
newItems.push({
json: {
error: error.message,
},
pairedItem: {
item: i,
},
});
continue;
}
throw error;
}
}
return this.prepareOutputData(newItems);
} else if (operation === 'toFile') {
try {
// Write the workflow data to spreadsheet file
const binaryPropertyName = this.getNodeParameter('binaryPropertyName', 0);
const fileFormat = this.getNodeParameter('fileFormat', 0) as string;
const options = this.getNodeParameter('options', 0, {});
const sheetToJsonOptions: JSON2SheetOpts = {};
if (options.headerRow === false) {
sheetToJsonOptions.skipHeader = true;
}
// Get the json data of the items and flatten it
let item: INodeExecutionData;
const itemData: IDataObject[] = [];
for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
item = items[itemIndex];
itemData.push(flattenObject(item.json));
}
const ws = xlsxUtils.json_to_sheet(itemData, sheetToJsonOptions);
const wopts: WritingOptions = {
bookSST: false,
type: 'buffer',
};
if (fileFormat === 'csv') {
wopts.bookType = 'csv';
} else if (fileFormat === 'html') {
wopts.bookType = 'html';
} else if (fileFormat === 'rtf') {
wopts.bookType = 'rtf';
} else if (fileFormat === 'ods') {
wopts.bookType = 'ods';
if (options.compression) {
wopts.compression = true;
}
} else if (fileFormat === 'xls') {
wopts.bookType = 'xls';
} else if (fileFormat === 'xlsx') {
wopts.bookType = 'xlsx';
if (options.compression) {
wopts.compression = true;
}
}
// Convert the data in the correct format
const sheetName = (options.sheetName as string) || 'Sheet';
const wb: WorkBook = {
SheetNames: [sheetName],
Sheets: {
[sheetName]: ws,
},
};
const wbout: Buffer = xlsxWrite(wb, wopts);
// Create a new item with only the binary spreadsheet data
const newItem: INodeExecutionData = {
json: {},
binary: {},
pairedItem: {
item: 0,
},
};
let fileName = `spreadsheet.${fileFormat}`;
if (options.fileName !== undefined) {
fileName = options.fileName as string;
}
newItem.binary![binaryPropertyName] = await this.helpers.prepareBinaryData(wbout, fileName);
newItems.push(newItem);
} catch (error) {
if (this.continueOnFail()) {
newItems.push({
json: {
error: error.message,
},
pairedItem: {
item: 0,
},
});
} else {
throw error;
}
}
} else {
if (this.continueOnFail()) {
return this.prepareOutputData([
{ json: { error: `The operation "${operation}" is not supported!` } },
]);
} else {
throw new NodeOperationError(
this.getNode(),
`The operation "${operation}" is not supported!`,
);
}
}
return this.prepareOutputData(newItems);
}
}