fix(HTTP Request Node): Process text files (#16226)

packages/nodes-base/nodes/HttpRequest/V3/HttpRequestV3.node.ts

@@ -27,6 +27,8 @@ import type { Readable } from 'stream';
 import { keysToLowercase } from '@utils/utilities';
 
 import { mainProperties } from './Description';
+import { setFilename } from './utils/binaryData';
+import { mimeTypeFromResponse } from './utils/parse';
 import type { BodyParameter, IAuthDataSanitizeKeys } from '../GenericFunctions';
 import {
 	binaryContentTypes,
@@ -123,6 +125,8 @@ export class HttpRequestV3 implements INodeType {
 
 		let autoDetectResponseFormat = false;
 
+		let responseFileName: string | undefined;
+
 		// Can not be defined on a per item level
 		const pagination = this.getNodeParameter('options.pagination.pagination', 0, null, {
 			rawExpressions: true,
@@ -240,12 +244,19 @@ export class HttpRequestV3 implements INodeType {
 					allowUnauthorizedCerts: boolean;
 					queryParameterArrays: 'indices' | 'brackets' | 'repeat';
 					response: {
-						response: { neverError: boolean; responseFormat: string; fullResponse: boolean };
+						response: {
+							neverError: boolean;
+							responseFormat: string;
+							fullResponse: boolean;
+							outputPropertyName: string;
+						};
 					};
 					redirect: { redirect: { maxRedirects: number; followRedirects: boolean } };
 					lowercaseHeaders: boolean;
 				};
 
+				responseFileName = response?.response?.outputPropertyName;
+
 				const url = this.getNodeParameter('url', itemIndex) as string;
 
 				const responseFormat = response?.response?.responseFormat || 'autodetect';
@@ -904,17 +915,14 @@ export class HttpRequestV3 implements INodeType {
 					const preparedBinaryData = await this.helpers.prepareBinaryData(
 						binaryData,
 						undefined,
-						responseContentType || undefined,
+						mimeTypeFromResponse(responseContentType),
 					);
 
-					if (
-						!preparedBinaryData.fileName &&
-						preparedBinaryData.fileExtension &&
-						typeof requestOptions.uri === 'string' &&
-						requestOptions.uri.endsWith(preparedBinaryData.fileExtension)
-					) {
-						preparedBinaryData.fileName = requestOptions.uri.split('/').pop();
-					}
+					preparedBinaryData.fileName = setFilename(
+						preparedBinaryData,
+						requestOptions,
+						responseFileName,
+					);
 
 					newItem.binary![outputPropertyName] = preparedBinaryData;
 

packages/nodes-base/nodes/HttpRequest/V3/utils/binaryData.ts

@@ -0,0 +1,22 @@
+import type { IBinaryData, IRequestOptions } from 'n8n-workflow';
+
+export const setFilename = (
+	preparedBinaryData: IBinaryData,
+	requestOptions: IRequestOptions,
+	responseFileName: string | undefined,
+) => {
+	if (
+		!preparedBinaryData.fileName &&
+		preparedBinaryData.fileExtension &&
+		typeof requestOptions.uri === 'string' &&
+		requestOptions.uri.endsWith(preparedBinaryData.fileExtension)
+	) {
+		return requestOptions.uri.split('/').pop();
+	}
+
+	if (!preparedBinaryData.fileName && preparedBinaryData.fileExtension) {
+		return `${responseFileName ?? 'data'}.${preparedBinaryData.fileExtension}`;
+	}
+
+	return preparedBinaryData.fileName;
+};

packages/nodes-base/nodes/HttpRequest/V3/utils/parse.ts

@@ -0,0 +1,9 @@
+export const mimeTypeFromResponse = (
+	responseContentType: string | undefined,
+): string | undefined => {
+	if (!responseContentType) {
+		return undefined;
+	}
+
+	return responseContentType.split(' ')[0].split(';')[0];
+};

packages/nodes-base/nodes/HttpRequest/test/binaryData/HttpRequest.test.ts

@@ -10,6 +10,11 @@ describe('Test Binary Data Download', () => {
 			.get('/path/to/image.png')
 			.reply(200, Buffer.from('test'), { 'content-type': 'image/png' });
 
+		nock(baseUrl)
+			.persist()
+			.get('/path/to/text.txt')
+			.reply(200, Buffer.from('test'), { 'content-type': 'text/plain; charset=utf-8' });
+
 		nock(baseUrl)
 			.persist()
 			.get('/redirect-to-image')

packages/nodes-base/nodes/HttpRequest/test/binaryData/binaryData.test.json

@@ -92,6 +92,23 @@
 				}
 			},
 			"position": [1020, 720]
+		},
+		{
+			"parameters": {
+				"url": "https://dummy.domain/path/to/text.txt",
+				"options": {
+					"response": {
+						"response": {
+							"responseFormat": "file"
+						}
+					}
+				}
+			},
+			"name": "HTTP Request (v4)2",
+			"type": "n8n-nodes-base.httpRequest",
+			"typeVersion": 4,
+			"position": [1680, 600],
+			"id": "665fef5c-6380-4bc0-be2a-430446b140ca"
 		}
 	],
 	"pinData": {
@@ -184,6 +201,21 @@
 				},
 				"json": {}
 			}
+		],
+		"HTTP Request (v4)2": [
+			{
+				"binary": {
+					"data": {
+						"data": "dGVzdA==",
+						"mimeType": "text/plain",
+						"fileType": "text",
+						"fileExtension": "txt",
+						"fileName": "text.txt",
+						"fileSize": "4 B"
+					}
+				},
+				"json": {}
+			}
 		]
 	},
 	"connections": {
@@ -219,6 +251,11 @@
 						"node": "Content Disposition",
 						"type": "main",
 						"index": 0
+					},
+					{
+						"node": "HTTP Request (v4)2",
+						"type": "main",
+						"index": 0
 					}
 				]
 			]

packages/nodes-base/nodes/HttpRequest/test/utils/binaryData.test.ts

@@ -0,0 +1,29 @@
+import type { IBinaryData, IRequestOptions } from 'n8n-workflow';
+
+import { setFilename } from '../../V3/utils/binaryData';
+
+describe('setFilename', () => {
+	it('returns filename from URI if fileName is missing and URI ends with fileExtension', () => {
+		const preparedBinaryData = { fileExtension: 'png' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/image.png' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, undefined)).toBe('image.png');
+	});
+
+	it('returns constructed filename if fileName is missing and URI does not end with fileExtension', () => {
+		const preparedBinaryData = { fileExtension: 'jpg' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/image.png' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, 'response')).toBe('response.jpg');
+	});
+
+	it('returns constructed filename with default "data" if responseFileName is undefined', () => {
+		const preparedBinaryData = { fileExtension: 'txt' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/file' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, undefined)).toBe('data.txt');
+	});
+
+	it('returns fileName if it exists', () => {
+		const preparedBinaryData = { fileName: 'myfile.pdf', fileExtension: 'pdf' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/file.pdf' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, 'response')).toBe('myfile.pdf');
+	});
+});

packages/nodes-base/nodes/HttpRequest/test/utils/parse.test.ts

@@ -0,0 +1,33 @@
+import { mimeTypeFromResponse } from '../../V3/utils/parse';
+
+describe('mimeTypeFromResponse', () => {
+	it('should return undefined if input is undefined', () => {
+		expect(mimeTypeFromResponse(undefined)).toBeUndefined();
+	});
+
+	it('should return the mime type for a simple type', () => {
+		expect(mimeTypeFromResponse('image/png')).toBe('image/png');
+	});
+
+	it('should strip charset from content type', () => {
+		expect(mimeTypeFromResponse('text/html; charset=utf-8')).toBe('text/html');
+	});
+
+	it('should strip charset from content type', () => {
+		expect(mimeTypeFromResponse('text/plain; charset=utf-8')).toBe('text/plain');
+	});
+
+	it('should strip boundary from multipart content type', () => {
+		expect(mimeTypeFromResponse('multipart/form-data; boundary=ExampleBoundaryString')).toBe(
+			'multipart/form-data',
+		);
+	});
+
+	it('should handle content type with extra spaces', () => {
+		expect(mimeTypeFromResponse('application/json ; charset=utf-8')).toBe('application/json');
+	});
+
+	it('should handle content type with space before semicolon', () => {
+		expect(mimeTypeFromResponse('application/xml ;charset=utf-8')).toBe('application/xml');
+	});
+});