def _get_relay_recipient_from_message_json()

in emails/views.py [0:0]

• 10 lines of code
• 8 McCabe index (conditional complexity)

def _get_relay_recipient_from_message_json(message_json):
    # Go thru all To, Cc, and Bcc fields and
    # return the one that has a Relay domain

    # First check common headers for to or cc match
    headers_to_check = "to", "cc"
    common_headers = message_json["mail"]["commonHeaders"]
    for header in headers_to_check:
        if header in common_headers:
            recipient = _get_recipient_with_relay_domain(common_headers[header])
            if recipient is not None:
                return parseaddr(recipient)[1]

    # SES-SNS sends bcc in a different part of the message
    recipients = message_json["receipt"]["recipients"]
    return _get_recipient_with_relay_domain(recipients)