I am trying to add attachments to existing invoices in xero.
I am using xero-node sdk (https://github.com/XeroAPI/xero-node#readme) for this integration and they provide a method for adding attachment as follows:
this.xero.accountingApi.createInvoiceAttachmentByFileName(tenantId, invoiceid, filenameInvoice,includeOnline,readStream )
The issue here is it requires an fs.ReadStream object for readStream.
The file I am trying to upload is present in cloud and I cannot download it and store it in file system before sending to Xero. I want to send the file present in azure cloud directly to xero. I have the url of file so I can get the content as a variable by making http request but there is no option to send this content to Xero.
There is an API available for this as well (here https://developer.xero.com/documentation/api/attachments) apart from the sdk. But I am not sure how I can send the file that I have to this API in body as it expects RAW data. Are there any specific headers or encodings required to call this API with file content in body? Because this is also not working for me if I just pass the body of the response I got from azure file url, as body to this Xero Attachment API. It tries for a long time and gives timeout error.
I ended up adding the link to file in History and Notes section of the invoice. Even though this is not the best solution, It serves the purpose of showing invoices to the customer.
Thanks to @SerKnight for your answer.