The `create_user` API and data import tools can result in our having
active users in the database who haven't intentionally created a Zulip
account or agreed to the ToS; we should never email such users.
The check for `TOS_VERSION is not None` is necessary for the
development environment, which has `TERMS_OF_SERVICE` set but not
`TOS_VERSION`.
It's likely that we will want this check in other places as well.
Long-term, we probably want to make the filtering options more
generic, but there's little harm in adding an option for a specific
group we're likely to email multiple times.
Add a `--dry-run` flag to send_custom_email management command
in order to provide a mechanism to verify the emails of the recipients
and the text of the email being sent before actually sending them.
Add tests to:
- Check that no emails are actually sent when we are in the dry-run mode.
- Check if the emails are printed correctly when we are in the dry-run mode.
Fixes#17767
Generated by `pyupgrade --py3-plus --keep-percent-format` on all our
Python code except `zthumbor` and `zulip-ec2-configure-interfaces`,
followed by manual indentation fixes.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This is a preparatory commit for using isort for sorting all of our
imports, merging changes to files where we can easily review the
changes as something we're happy with.
These are also files with relatively little active development, which
means we don't expect much merge conflict risk from these changes.
This allows us to email sets of users on a server with a nicely
formatted email similar to our onboarding emails, built off of a
Markdown template.
The code was based on send_password_reset_email, but it doesn't
replace that use case, since one cannot include special values like
password reset tokens in these emails.