n8n/packages/nodes-base/nodes/ItemLists/ItemLists.node.ts
Michael Kret 91d7e16c81
n8n-3867-progressively-apply-prettier-to-all (#3873)
* 🔨 formatting nodes with prettier
2022-08-17 17:50:24 +02:00

1379 lines
36 KiB
TypeScript

import { IExecuteFunctions } from 'n8n-core';
import {
IDataObject,
INode,
INodeExecutionData,
INodeType,
INodeTypeDescription,
NodeOperationError,
} from 'n8n-workflow';
import { get, isEmpty, isEqual, isObject, lt, merge, pick, reduce, set, unset } from 'lodash';
const { NodeVM } = require('vm2');
export class ItemLists implements INodeType {
description: INodeTypeDescription = {
displayName: 'Item Lists',
name: 'itemLists',
icon: 'file:itemLists.svg',
group: ['input'],
version: 1,
subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
description: 'Helper for working with lists of items and transforming arrays',
defaults: {
name: 'Item Lists',
},
inputs: ['main'],
outputs: ['main'],
credentials: [],
properties: [
{
displayName: 'Resource',
name: 'resource',
type: 'hidden',
options: [
{
name: 'Item List',
value: 'itemList',
},
],
default: 'itemList',
},
{
displayName: 'Operation',
name: 'operation',
type: 'options',
noDataExpression: true,
options: [
{
name: 'Aggregate Items',
value: 'aggregateItems',
description: 'Combine fields into a single new item',
action: 'Combine fields into a single new item',
},
{
name: 'Limit',
value: 'limit',
description: 'Remove items if there are too many',
action: 'Remove items if there are too many',
},
{
name: 'Remove Duplicates',
value: 'removeDuplicates',
description: 'Remove extra items that are similar',
action: 'Remove extra items that are similar',
},
{
name: 'Sort',
value: 'sort',
description: 'Change the item order',
action: 'Change the item order',
},
{
name: 'Split Out Items',
value: 'splitOutItems',
description: 'Turn a list inside item(s) into separate items',
action: 'Turn a list inside item(s) into separate items',
},
],
default: 'splitOutItems',
},
// Split out items - Fields
{
displayName: 'Field To Split Out',
name: 'fieldToSplitOut',
type: 'string',
default: '',
required: true,
displayOptions: {
show: {
resource: ['itemList'],
operation: ['splitOutItems'],
},
},
description: 'The name of the input field to break out into separate items',
},
{
displayName: 'Include',
name: 'include',
type: 'options',
options: [
{
name: 'No Other Fields',
value: 'noOtherFields',
},
{
name: 'All Other Fields',
value: 'allOtherFields',
},
{
name: 'Selected Other Fields',
value: 'selectedOtherFields',
},
],
default: 'noOtherFields',
description: 'Whether to copy any other fields into the new items',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['splitOutItems'],
},
},
},
{
displayName: 'Fields To Include',
name: 'fieldsToInclude',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Include',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['splitOutItems'],
include: ['selectedOtherFields'],
},
},
options: [
{
displayName: '',
name: 'fields',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
default: '',
description: 'A field in the input items to aggregate together',
},
],
},
],
},
// Aggregate Items
{
displayName: 'Aggregate',
name: 'aggregate',
type: 'options',
default: 'aggregateIndividualFields',
options: [
{
name: 'Individual Fields',
value: 'aggregateIndividualFields',
},
{
name: 'All Item Data (Into a Single List)',
value: 'aggregateAllItemData',
},
],
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
},
},
},
// Aggregate Individual Fields
{
displayName: 'Fields To Aggregate',
name: 'fieldsToAggregate',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Aggregate',
default: { fieldToAggregate: [{ fieldToAggregate: '', renameField: false }] },
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
aggregate: ['aggregateIndividualFields'],
},
},
options: [
{
displayName: '',
name: 'fieldToAggregate',
values: [
{
displayName: 'Input Field Name',
name: 'fieldToAggregate',
type: 'string',
default: '',
description: 'The name of a field in the input items to aggregate together',
},
{
displayName: 'Rename Field',
name: 'renameField',
type: 'boolean',
default: false,
description: 'Whether to give the field a different name in the output',
},
{
displayName: 'Output Field Name',
name: 'outputFieldName',
displayOptions: {
show: {
renameField: [true],
},
},
type: 'string',
default: '',
description:
'The name of the field to put the aggregated data in. Leave blank to use the input field name.',
},
],
},
],
},
// Aggregate All Item Data
{
displayName: 'Put Output in Field',
name: 'destinationFieldName',
type: 'string',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
aggregate: ['aggregateAllItemData'],
},
},
default: 'data',
description: 'The name of the output field to put the data in',
},
{
displayName: 'Include',
name: 'include',
type: 'options',
default: 'allFields',
options: [
{
name: 'All Fields',
value: 'allFields',
},
{
name: 'Specified Fields',
value: 'specifiedFields',
},
{
name: 'All Fields Except',
value: 'allFieldsExcept',
},
],
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
aggregate: ['aggregateAllItemData'],
},
},
},
{
displayName: 'Fields To Exclude',
name: 'fieldsToExclude',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Exclude',
default: {},
options: [
{
displayName: '',
name: 'fields',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
default: '',
description: 'A field in the input to exclude from the object in output array',
},
],
},
],
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
aggregate: ['aggregateAllItemData'],
include: ['allFieldsExcept'],
},
},
},
{
displayName: 'Fields To Include',
name: 'fieldsToInclude',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Include',
default: {},
options: [
{
displayName: '',
name: 'fields',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
default: '',
description: 'Specify fields that will be included in output array',
},
],
},
],
displayOptions: {
show: {
resource: ['itemList'],
operation: ['aggregateItems'],
aggregate: ['aggregateAllItemData'],
include: ['specifiedFields'],
},
},
},
// Remove duplicates - Fields
{
displayName: 'Compare',
name: 'compare',
type: 'options',
options: [
{
name: 'All Fields',
value: 'allFields',
},
{
name: 'All Fields Except',
value: 'allFieldsExcept',
},
{
name: 'Selected Fields',
value: 'selectedFields',
},
],
default: 'allFields',
description: 'The fields of the input items to compare to see if they are the same',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['removeDuplicates'],
},
},
},
{
displayName: 'Fields To Exclude',
name: 'fieldsToExclude',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Exclude',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['removeDuplicates'],
compare: ['allFieldsExcept'],
},
},
options: [
{
displayName: '',
name: 'fields',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
default: '',
description: 'A field in the input to exclude from the comparison',
},
],
},
],
},
{
displayName: 'Fields To Compare',
name: 'fieldsToCompare',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Compare',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['removeDuplicates'],
compare: ['selectedFields'],
},
},
options: [
{
displayName: '',
name: 'fields',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
default: '',
description: 'A field in the input to add to the comparison',
},
],
},
],
},
// Sort - Fields
{
displayName: 'Type',
name: 'type',
type: 'options',
options: [
{
name: 'Simple',
value: 'simple',
},
{
name: 'Random',
value: 'random',
},
{
name: 'Code',
value: 'code',
},
],
default: 'simple',
description: 'The fields of the input items to compare to see if they are the same',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['sort'],
},
},
},
{
displayName: 'Fields To Sort By',
name: 'sortFieldsUi',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
placeholder: 'Add Field To Sort By',
options: [
{
displayName: '',
name: 'sortField',
values: [
{
displayName: 'Field Name',
name: 'fieldName',
type: 'string',
required: true,
default: '',
description: 'The field to sort by',
},
{
displayName: 'Order',
name: 'order',
type: 'options',
options: [
{
name: 'Ascending',
value: 'ascending',
},
{
name: 'Descending',
value: 'descending',
},
],
default: 'ascending',
description: 'The order to sort by',
},
],
},
],
default: {},
description: 'The fields of the input items to compare to see if they are the same',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['sort'],
type: ['simple'],
},
},
},
{
displayName: 'Code',
name: 'code',
type: 'string',
typeOptions: {
alwaysOpenEditWindow: true,
editor: 'code',
rows: 10,
},
default: `// The two items to compare are in the variables a and b
// Access the fields in a.json and b.json
// Return -1 if a should go before b
// Return 1 if b should go before a
// Return 0 if there's no difference
fieldName = 'myField';
if (a.json[fieldName] < b.json[fieldName]) {
return -1;
}
if (a.json[fieldName] > b.json[fieldName]) {
return 1;
}
return 0;`,
description: 'Javascript code to determine the order of any two items',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['sort'],
type: ['code'],
},
},
},
// Limit - Fields
{
displayName: 'Max Items',
name: 'maxItems',
type: 'number',
typeOptions: {
minValue: 1,
},
default: 1,
description: 'If there are more items than this number, some are removed',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['limit'],
},
},
},
{
displayName: 'Keep',
name: 'keep',
type: 'options',
options: [
{
name: 'First Items',
value: 'firstItems',
},
{
name: 'Last Items',
value: 'lastItems',
},
],
default: 'firstItems',
description: 'When removing items, whether to keep the ones at the start or the ending',
displayOptions: {
show: {
resource: ['itemList'],
operation: ['limit'],
},
},
},
{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Field',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['removeDuplicates'],
compare: ['allFieldsExcept', 'selectedFields'],
},
},
options: [
{
displayName: 'Remove Other Fields',
name: 'removeOtherFields',
type: 'boolean',
default: false,
description:
'Whether to remove any fields that are not being compared. If disabled, will keep the values from the first of the duplicates.',
},
{
displayName: 'Disable Dot Notation',
name: 'disableDotNotation',
type: 'boolean',
default: false,
description:
'Whether to disallow referencing child fields using `parent.child` in the field name',
},
],
},
{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Field',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['sort'],
type: ['simple'],
},
},
options: [
{
displayName: 'Disable Dot Notation',
name: 'disableDotNotation',
type: 'boolean',
default: false,
description:
'Whether to disallow referencing child fields using `parent.child` in the field name',
},
],
},
{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Field',
default: {},
displayOptions: {
show: {
resource: ['itemList'],
operation: ['splitOutItems', 'aggregateItems'],
},
hide: {
aggregate: ['aggregateAllItemData'],
},
},
options: [
{
displayName: 'Disable Dot Notation',
name: 'disableDotNotation',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['splitOutItems', 'aggregateItems'],
},
},
default: false,
description:
'Whether to disallow referencing child fields using `parent.child` in the field name',
},
{
displayName: 'Destination Field Name',
name: 'destinationFieldName',
type: 'string',
displayOptions: {
show: {
'/operation': ['splitOutItems'],
},
},
default: '',
description: 'The field in the output under which to put the split field contents',
},
{
displayName: 'Merge Lists',
name: 'mergeLists',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['aggregateItems'],
},
},
default: false,
description:
'Whether to merge the output into a single flat list (rather than a list of lists), if the field to aggregate is a list',
},
{
displayName: 'Keep Missing And Null Values',
name: 'keepMissing',
type: 'boolean',
displayOptions: {
show: {
'/operation': ['aggregateItems'],
},
},
default: false,
description:
'Whether to add a null entry to the aggregated list when there is a missing or null value',
},
],
},
],
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const items = this.getInputData();
const length = items.length;
const returnData: INodeExecutionData[] = [];
const resource = this.getNodeParameter('resource', 0) as string;
const operation = this.getNodeParameter('operation', 0) as string;
if (resource === 'itemList') {
if (operation === 'splitOutItems') {
for (let i = 0; i < length; i++) {
const fieldToSplitOut = this.getNodeParameter('fieldToSplitOut', i) as string;
const disableDotNotation = this.getNodeParameter(
'options.disableDotNotation',
0,
false,
) as boolean;
const destinationFieldName = this.getNodeParameter(
'options.destinationFieldName',
i,
'',
) as string;
const include = this.getNodeParameter('include', i) as string;
let arrayToSplit;
if (disableDotNotation === false) {
arrayToSplit = get(items[i].json, fieldToSplitOut);
} else {
arrayToSplit = items[i].json[fieldToSplitOut as string];
}
if (arrayToSplit === undefined) {
if (fieldToSplitOut.includes('.') && disableDotNotation === true) {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldToSplitOut}' in the input data`,
{
description: `If you're trying to use a nested field, make sure you turn off 'disable dot notation' in the node options`,
},
);
} else {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldToSplitOut}' in the input data`,
{ itemIndex: i },
);
}
}
if (!Array.isArray(arrayToSplit)) {
throw new NodeOperationError(
this.getNode(),
`The provided field '${fieldToSplitOut}' is not an array`,
{ itemIndex: i },
);
} else {
for (const element of arrayToSplit) {
let newItem = {};
if (include === 'selectedOtherFields') {
const fieldsToInclude = (
this.getNodeParameter('fieldsToInclude.fields', i, []) as [{ fieldName: string }]
).map((field) => field.fieldName);
if (!fieldsToInclude.length) {
throw new NodeOperationError(this.getNode(), 'No fields specified', {
description: 'Please add a field to include',
});
}
newItem = {
...fieldsToInclude.reduce((prev, field) => {
if (field === fieldToSplitOut) {
return prev;
}
let value;
if (disableDotNotation === false) {
value = get(items[i].json, field);
} else {
value = items[i].json[field as string];
}
prev = { ...prev, [field as string]: value };
return prev;
}, {}),
};
} else if (include === 'allOtherFields') {
const keys = Object.keys(items[i].json);
newItem = {
...keys.reduce((prev, field) => {
let value;
if (disableDotNotation === false) {
value = get(items[i].json, field);
} else {
value = items[i].json[field as string];
}
prev = { ...prev, [field as string]: value };
return prev;
}, {}),
};
unset(newItem, fieldToSplitOut);
}
if (
typeof element === 'object' &&
include === 'noOtherFields' &&
destinationFieldName === ''
) {
newItem = { ...newItem, ...element };
} else {
newItem = {
...newItem,
[(destinationFieldName as string) || (fieldToSplitOut as string)]: element,
};
}
returnData.push({
json: newItem,
pairedItem: {
item: i,
},
});
}
}
}
return this.prepareOutputData(returnData);
} else if (operation === 'aggregateItems') {
const aggregate = this.getNodeParameter('aggregate', 0, '') as string;
if (aggregate === 'aggregateIndividualFields') {
const disableDotNotation = this.getNodeParameter(
'options.disableDotNotation',
0,
false,
) as boolean;
const mergeLists = this.getNodeParameter('options.mergeLists', 0, false) as boolean;
const fieldsToAggregate = this.getNodeParameter(
'fieldsToAggregate.fieldToAggregate',
0,
[],
) as [{ fieldToAggregate: string; renameField: boolean; outputFieldName: string }];
const keepMissing = this.getNodeParameter('options.keepMissing', 0, false) as boolean;
if (!fieldsToAggregate.length) {
throw new NodeOperationError(this.getNode(), 'No fields specified', {
description: 'Please add a field to aggregate',
});
}
for (const { fieldToAggregate } of fieldsToAggregate) {
let found = false;
for (const item of items) {
if (fieldToAggregate === '') {
throw new NodeOperationError(this.getNode(), 'Field to aggregate is blank', {
description: 'Please add a field to aggregate',
});
}
if (disableDotNotation === false) {
if (get(item.json, fieldToAggregate) !== undefined) {
found = true;
}
} else if (item.json.hasOwnProperty(fieldToAggregate)) {
found = true;
}
}
if (found === false && disableDotNotation && fieldToAggregate.includes('.')) {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldToAggregate}' in the input data`,
{
description: `If you're trying to use a nested field, make sure you turn off 'disable dot notation' in the node options`,
},
);
} else if (found === false && keepMissing === false) {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldToAggregate}' in the input data`,
);
}
}
let newItem: INodeExecutionData;
newItem = {
json: {},
pairedItem: Array.from({ length }, (_, i) => i).map((index) => {
return {
item: index,
};
}),
};
// tslint:disable-next-line: no-any
const values: { [key: string]: any } = {};
const outputFields: string[] = [];
for (const { fieldToAggregate, outputFieldName, renameField } of fieldsToAggregate) {
const field = renameField ? outputFieldName : fieldToAggregate;
if (outputFields.includes(field)) {
throw new NodeOperationError(
this.getNode(),
`The '${field}' output field is used more than once`,
{ description: `Please make sure each output field name is unique` },
);
} else {
outputFields.push(field);
}
const getFieldToAggregate = () =>
disableDotNotation === false && fieldToAggregate.includes('.')
? fieldToAggregate.split('.').pop()
: fieldToAggregate;
const _outputFieldName = outputFieldName
? outputFieldName
: (getFieldToAggregate() as string);
if (fieldToAggregate !== '') {
values[_outputFieldName] = [];
for (let i = 0; i < length; i++) {
if (disableDotNotation === false) {
let value = get(items[i].json, fieldToAggregate);
if (!keepMissing) {
if (Array.isArray(value)) {
value = value.filter((value) => value !== null);
} else if (value === null || value === undefined) {
continue;
}
}
if (Array.isArray(value) && mergeLists) {
values[_outputFieldName].push(...value);
} else {
values[_outputFieldName].push(value);
}
} else {
let value = items[i].json[fieldToAggregate];
if (!keepMissing) {
if (Array.isArray(value)) {
value = value.filter((value) => value !== null);
} else if (value === null || value === undefined) {
continue;
}
}
if (Array.isArray(value) && mergeLists) {
values[_outputFieldName].push(...value);
} else {
values[_outputFieldName].push(value);
}
}
}
}
}
for (const key of Object.keys(values)) {
if (disableDotNotation === false) {
set(newItem.json, key, values[key]);
} else {
newItem.json[key] = values[key];
}
}
returnData.push(newItem);
return this.prepareOutputData(returnData);
} else {
let newItems: IDataObject[] = items.map((item) => item.json);
const destinationFieldName = this.getNodeParameter('destinationFieldName', 0) as string;
const fieldsToExclude = (
this.getNodeParameter('fieldsToExclude.fields', 0, []) as IDataObject[]
).map((entry) => entry.fieldName);
const fieldsToInclude = (
this.getNodeParameter('fieldsToInclude.fields', 0, []) as IDataObject[]
).map((entry) => entry.fieldName);
if (fieldsToExclude.length || fieldsToInclude.length) {
newItems = newItems.reduce((acc, item) => {
const newItem: IDataObject = {};
let outputFields = Object.keys(item);
if (fieldsToExclude.length) {
outputFields = outputFields.filter((key) => !fieldsToExclude.includes(key));
}
if (fieldsToInclude.length) {
outputFields = outputFields.filter((key) =>
fieldsToInclude.length ? fieldsToInclude.includes(key) : true,
);
}
outputFields.forEach((key) => {
newItem[key] = item[key];
});
if (isEmpty(newItem)) {
return acc;
}
return acc.concat([newItem]);
}, [] as IDataObject[]);
}
const output: INodeExecutionData = { json: { [destinationFieldName]: newItems } };
return this.prepareOutputData([output]);
}
} else if (operation === 'removeDuplicates') {
const compare = this.getNodeParameter('compare', 0) as string;
const disableDotNotation = this.getNodeParameter(
'options.disableDotNotation',
0,
false,
) as boolean;
const removeOtherFields = this.getNodeParameter(
'options.removeOtherFields',
0,
false,
) as boolean;
let keys = disableDotNotation
? Object.keys(items[0].json)
: Object.keys(flattenKeys(items[0].json));
for (const item of items) {
for (const key of disableDotNotation
? Object.keys(item.json)
: Object.keys(flattenKeys(item.json))) {
if (!keys.includes(key)) {
keys.push(key);
}
}
}
if (compare === 'allFieldsExcept') {
const fieldsToExclude = (
this.getNodeParameter('fieldsToExclude.fields', 0, []) as [{ fieldName: string }]
).map((field) => field.fieldName);
if (!fieldsToExclude.length) {
throw new NodeOperationError(
this.getNode(),
'No fields specified. Please add a field to exclude from comparison',
);
}
if (disableDotNotation === false) {
keys = Object.keys(flattenKeys(items[0].json));
}
keys = keys.filter((key) => !fieldsToExclude.includes(key));
}
if (compare === 'selectedFields') {
const fieldsToCompare = (
this.getNodeParameter('fieldsToCompare.fields', 0, []) as [{ fieldName: string }]
).map((field) => field.fieldName);
if (!fieldsToCompare.length) {
throw new NodeOperationError(
this.getNode(),
'No fields specified. Please add a field to compare on',
);
}
if (disableDotNotation === false) {
keys = Object.keys(flattenKeys(items[0].json));
}
keys = fieldsToCompare.map((key) => key.trim());
}
// This solution is O(nlogn)
// add original index to the items
const newItems = items.map(
(item, index) =>
({
json: { ...item['json'], __INDEX: index },
pairedItem: { item: index },
} as INodeExecutionData),
);
//sort items using the compare keys
newItems.sort((a, b) => {
let result = 0;
for (const key of keys) {
let equal;
if (disableDotNotation === false) {
equal = isEqual(get(a.json, key), get(b.json, key));
} else {
equal = isEqual(a.json[key], b.json[key]);
}
if (!equal) {
let lessThan;
if (disableDotNotation === false) {
lessThan = lt(get(a.json, key), get(b.json, key));
} else {
lessThan = lt(a.json[key], b.json[key]);
}
result = lessThan ? -1 : 1;
break;
}
}
return result;
});
for (const key of keys) {
// tslint:disable-next-line: no-any
let type: any = undefined;
for (const item of newItems) {
if (key === '') {
throw new NodeOperationError(this.getNode(), `Name of field to compare is blank`);
}
const value = !disableDotNotation ? get(item.json, key) : item.json[key];
if (value === undefined && disableDotNotation && key.includes('.')) {
throw new NodeOperationError(
this.getNode(),
`'${key}' field is missing from some input items`,
{
description: `If you're trying to use a nested field, make sure you turn off 'disable dot notation' in the node options`,
},
);
} else if (value === undefined) {
throw new NodeOperationError(
this.getNode(),
`'${key}' field is missing from some input items`,
);
}
if (type !== undefined && value !== undefined && type !== typeof value) {
throw new NodeOperationError(this.getNode(), `'${key}' isn't always the same type`, {
description: 'The type of this field varies between items',
});
} else {
type = typeof value;
}
}
}
// collect the original indexes of items to be removed
const removedIndexes: number[] = [];
let temp = newItems[0];
for (let index = 1; index < newItems.length; index++) {
if (compareItems(newItems[index], temp, keys, disableDotNotation, this.getNode())) {
removedIndexes.push(newItems[index].json.__INDEX as unknown as number);
} else {
temp = newItems[index];
}
}
let data = items.filter((_, index) => !removedIndexes.includes(index));
if (removeOtherFields) {
data = data.map((item, index) => ({
json: pick(item.json, ...keys),
pairedItem: { item: index },
}));
}
// return the filtered items
return this.prepareOutputData(data);
} else if (operation === 'sort') {
let newItems = [...items];
const type = this.getNodeParameter('type', 0) as string;
const disableDotNotation = this.getNodeParameter(
'options.disableDotNotation',
0,
false,
) as boolean;
if (type === 'random') {
shuffleArray(newItems);
return this.prepareOutputData(newItems);
}
if (type === 'simple') {
const sortFieldsUi = this.getNodeParameter('sortFieldsUi', 0) as IDataObject;
const sortFields = sortFieldsUi.sortField as Array<{
fieldName: string;
order: 'ascending' | 'descending';
}>;
if (!sortFields || !sortFields.length) {
throw new NodeOperationError(
this.getNode(),
'No sorting specified. Please add a field to sort by',
);
}
for (const { fieldName } of sortFields) {
let found = false;
for (const item of items) {
if (disableDotNotation === false) {
if (get(item.json, fieldName) !== undefined) {
found = true;
}
} else if (item.json.hasOwnProperty(fieldName)) {
found = true;
}
}
if (found === false && disableDotNotation && fieldName.includes('.')) {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldName}' in the input data`,
{
description: `If you're trying to use a nested field, make sure you turn off 'disable dot notation' in the node options`,
},
);
} else if (found === false) {
throw new NodeOperationError(
this.getNode(),
`Couldn't find the field '${fieldName}' in the input data`,
);
}
}
const sortFieldsWithDirection = sortFields.map((field) => ({
name: field.fieldName,
dir: field.order === 'ascending' ? 1 : -1,
}));
newItems.sort((a, b) => {
let result = 0;
for (const field of sortFieldsWithDirection) {
let equal;
if (disableDotNotation === false) {
const _a =
typeof get(a.json, field.name) === 'string'
? (get(a.json, field.name) as string).toLowerCase()
: get(a.json, field.name);
const _b =
typeof get(b.json, field.name) === 'string'
? (get(b.json, field.name) as string).toLowerCase()
: get(b.json, field.name);
equal = isEqual(_a, _b);
} else {
const _a =
typeof a.json[field.name as string] === 'string'
? (a.json[field.name as string] as string).toLowerCase()
: a.json[field.name as string];
const _b =
typeof b.json[field.name as string] === 'string'
? (b.json[field.name as string] as string).toLowerCase()
: b.json[field.name as string];
equal = isEqual(_a, _b);
}
if (!equal) {
let lessThan;
if (disableDotNotation === false) {
const _a =
typeof get(a.json, field.name) === 'string'
? (get(a.json, field.name) as string).toLowerCase()
: get(a.json, field.name);
const _b =
typeof get(b.json, field.name) === 'string'
? (get(b.json, field.name) as string).toLowerCase()
: get(b.json, field.name);
lessThan = lt(_a, _b);
} else {
const _a =
typeof a.json[field.name as string] === 'string'
? (a.json[field.name as string] as string).toLowerCase()
: a.json[field.name as string];
const _b =
typeof b.json[field.name as string] === 'string'
? (b.json[field.name as string] as string).toLowerCase()
: b.json[field.name as string];
lessThan = lt(_a, _b);
}
if (lessThan) {
result = -1 * field.dir;
} else {
result = 1 * field.dir;
}
break;
}
}
return result;
});
} else {
const code = this.getNodeParameter('code', 0) as string;
const regexCheck = /\breturn\b/g.exec(code);
if (regexCheck && regexCheck.length) {
const sandbox = {
newItems,
};
const mode = this.getMode();
const options = {
console: mode === 'manual' ? 'redirect' : 'inherit',
sandbox,
};
const vm = new NodeVM(options);
newItems = await vm.run(
`
module.exports = async function() {
newItems.sort( (a,b) => {
${code}
})
return newItems;
}()`,
__dirname,
);
} else {
throw new NodeOperationError(
this.getNode(),
`Sort code doesn't return. Please add a 'return' statement to your code`,
);
}
}
return this.prepareOutputData(newItems);
} else if (operation === 'limit') {
let newItems = items;
const maxItems = this.getNodeParameter('maxItems', 0) as number;
const keep = this.getNodeParameter('keep', 0) as string;
if (maxItems > items.length) {
return this.prepareOutputData(newItems);
}
if (keep === 'firstItems') {
newItems = items.slice(0, maxItems);
} else {
newItems = items.slice(items.length - maxItems, items.length);
}
return this.prepareOutputData(newItems);
} else {
throw new NodeOperationError(this.getNode(), `Operation '${operation}' is not recognized`);
}
} else {
throw new NodeOperationError(this.getNode(), `Resource '${resource}' is not recognized`);
}
}
}
const compareItems = (
obj: INodeExecutionData,
obj2: INodeExecutionData,
keys: string[],
disableDotNotation: boolean,
node: INode,
) => {
let result = true;
for (const key of keys) {
if (disableDotNotation === false) {
if (!isEqual(get(obj.json, key), get(obj2.json, key))) {
result = false;
break;
}
} else {
if (!isEqual(obj.json[key as string], obj2.json[key as string])) {
result = false;
break;
}
}
}
return result;
};
const flattenKeys = (obj: {}, path: string[] = []): {} => {
return !isObject(obj)
? { [path.join('.')]: obj }
: reduce(obj, (cum, next, key) => merge(cum, flattenKeys(next, [...path, key])), {});
};
// tslint:disable-next-line: no-any
const shuffleArray = (array: any[]) => {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[array[i], array[j]] = [array[j], array[i]];
}
};