[firestore-send-email] Unable to send base64 encoded attachment

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• For general technical questions, post a question on StackOverflow with the firebase tag.
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• To file a bug against the Firebase Extensions platform, or for an issue affecting multiple extensions, please reach out to Firebase support directly.

[REQUIRED] Step 2: Describe your configuration

// ? send the email notification
      return await db.collection('mail').add({
        to:email,
        template: {
          name: 'template',
          data: {
            ...
          },
          attachments: [
            {
              filename: `Invoice-${invoice.invoice_number}.pdf`,
              content: pdf.toString('base64'),
              encoding: 'base64',
              contentType: 'application/pdf'
            }
          ]
        }
      })

• Extension name: firestore-send-email
• Extension version: 0.1.17
• Configuration values (redact info where appropriate):

DEFAULT_FROM=support@_.com
DEFAULT_REPLY_TO=support@_.com
LOCATION=us-central1
MAIL_COLLECTION=mail
SMTP_CONNECTION_URI=smtps://[e-mail]:465
SMTP_PASSWORD=password
TEMPLATES_COLLECTION=mail_templates
USERS_COLLECTION=users

[REQUIRED] Step 3: Describe the problem

The extension does not process a base64 encoded attachment. The email is successfully send, however, the email does not have a file attachment.

Steps to reproduce:

Create a record in the mail collection

Expected result

The email should have a PDF attachment.

Actual result

There is no attachment in the received email.

[dackers86]

@atanaskanchev I think I understand, does this example meet your requirements?

  await firestore().collection("templates").doc("base64_example").set({
    html: "{{html_data}}",
    subject: "{{subject_data}}",
  });

  await firestore()
    .collection("mail")
    .add({
      to: ["[e-mail]"],
      message: {
        attachments: [
          {
            filename: `ImportantDocument.pdf`,
            content: "",
            encoding: "base64",
          },
        ],
      },
      template: {
        name: "base64_example",
        data: { html_data: "This is html", subject_data: "This is a subject" },
      },
    });

[atanaskanchev]

@dackers86 this works perfectly, thanks for your help!