58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
import type { IExecuteFunctions, IDataObject, INodeExecutionData } from 'n8n-workflow';
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import { apiRequest } from '../../../transport';
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export async function download(this: IExecuteFunctions, index: number) {
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const body: IDataObject = {};
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const requestMethod = 'GET';
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const items = this.getInputData();
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//meta data
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const fileId: string = this.getNodeParameter('fileId', index) as string;
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const output: string = this.getNodeParameter('output', index) as string;
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//endpoint
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const endpoint = `files/${fileId}/`;
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//response
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const response = await apiRequest.call(this, requestMethod, endpoint, body, {} as IDataObject, {
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encoding: null,
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json: false,
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resolveWithFullResponse: true,
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});
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let mimeType = response.headers['content-type'] as string | undefined;
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mimeType = mimeType ? mimeType.split(';').find((value) => value.includes('/')) : undefined;
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const contentDisposition = response.headers['content-disposition'];
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const fileNameRegex = /(?<=filename=").*\b/;
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const match = fileNameRegex.exec(contentDisposition as string);
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let fileName = '';
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// file name was found
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if (match !== null) {
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fileName = match[0];
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}
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const newItem: INodeExecutionData = {
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json: items[index].json,
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binary: {},
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};
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if (items[index].binary !== undefined && newItem.binary) {
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// Create a shallow copy of the binary data so that the old
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// data references which do not get changed still stay behind
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// but the incoming data does not get changed.
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Object.assign(newItem.binary, items[index].binary);
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}
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newItem.binary = {
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[output]: await this.helpers.prepareBinaryData(
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response.body as unknown as Buffer,
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fileName,
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mimeType,
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),
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};
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return this.prepareOutputData(newItem as unknown as INodeExecutionData[]);
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}
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