first commit

packages/nodes-base/nodes/Microsoft/Outlook/v2/actions/messageAttachment/download.operation.ts

@@ -0,0 +1,92 @@
+import type { IExecuteFunctions, INodeExecutionData, INodeProperties } from 'n8n-workflow';
+
+import { updateDisplayOptions } from '@utils/utilities';
+
+import { attachmentRLC, messageRLC } from '../../descriptions';
+import { microsoftApiRequest } from '../../transport';
+
+export const properties: INodeProperties[] = [
+	messageRLC,
+	attachmentRLC,
+	{
+		displayName: 'Put Output in Field',
+		name: 'binaryPropertyName',
+		hint: 'The name of the output field to put the binary file data in',
+		type: 'string',
+		required: true,
+		default: 'data',
+	},
+];
+
+const displayOptions = {
+	show: {
+		resource: ['messageAttachment'],
+		operation: ['download'],
+	},
+};
+
+export const description = updateDisplayOptions(displayOptions, properties);
+
+export async function execute(this: IExecuteFunctions, index: number, items: INodeExecutionData[]) {
+	const messageId = this.getNodeParameter('messageId', index, undefined, {
+		extractValue: true,
+	}) as string;
+
+	const attachmentId = this.getNodeParameter('attachmentId', index, undefined, {
+		extractValue: true,
+	}) as string;
+
+	const dataPropertyNameDownload = this.getNodeParameter('binaryPropertyName', index);
+
+	// Get attachment details first
+	const attachmentDetails = await microsoftApiRequest.call(
+		this,
+		'GET',
+		`/messages/${messageId}/attachments/${attachmentId}`,
+		undefined,
+		{ $select: 'id,name,contentType' },
+	);
+
+	let mimeType: string | undefined;
+	if (attachmentDetails.contentType) {
+		mimeType = attachmentDetails.contentType;
+	}
+	const fileName = attachmentDetails.name as string;
+
+	const response = await microsoftApiRequest.call(
+		this,
+		'GET',
+		`/messages/${messageId}/attachments/${attachmentId}/$value`,
+		undefined,
+		{},
+		undefined,
+		{},
+		{ encoding: null, resolveWithFullResponse: true },
+	);
+
+	const newItem: INodeExecutionData = {
+		json: items[index].json,
+		binary: {},
+	};
+
+	if (items[index].binary !== undefined) {
+		// Create a shallow copy of the binary data so that the old
+		// data references which do not get changed still stay behind
+		// but the incoming data does not get changed.
+		Object.assign(newItem.binary!, items[index].binary);
+	}
+
+	const data = Buffer.from(response.body as string, 'utf8');
+	newItem.binary![dataPropertyNameDownload] = await this.helpers.prepareBinaryData(
+		data,
+		fileName,
+		mimeType,
+	);
+
+	const executionData = this.helpers.constructExecutionMetaData(
+		this.helpers.returnJsonArray(newItem),
+		{ itemData: { item: index } },
+	);
+
+	return executionData;
+}