This is also an opportunity to DRY-up the filtering of usage by
month, which we will reuse in the following commits. Doing a sum
is simple enough that it can be done inline, avoiding indirection.
So we don’t have to deploy a change on a Saturday.
In the future this could pull from the rates in the database, but while
that code is shifting around I didn’t want to touoch it. We’d also have
to think about caching so as not to have a non-authenticated route
hitting the database.
Note: I've removed the pricing assertion in the "0_free_allowance"
test as it's covered elsewhere - the value of the test is really to
check that we don't show the remainder if there never was any.
The previous, manual calculation could be incorrect depending on
which SMS rates the free allowance was attributed to.
The new field also supersedes the old "letter_total" bolt-on so we
can get cost information consistently for both types.
This will make the following changes clearer.
In the next commits we'll go into more detail about "billing_units"
and how it differs for SMS vs. emails and letters.
At the moment, we put the sms rate on the usage page for each
months billing data by taking the single sms rate for the year.
The assumption that there will be a single sms rate for the year is
no longer going to be true. Therefore, instead we take the sms
rate from the monthly data itself which tells us the rate for
a months worth of sent SMS.
We could alternatively put the "add up to 100%" error on the page
using form-level errors [^1] and a custom flash message. Putting
the error on each field is slightly simpler and does make it clear
the issue is with all of the fields together.
[^1]: 22636b55ed
This replaces the slider with an integer input for each provider.
Unfortunately showing a variable number of inputs isn't easy to
achieve in WTForms [^1], but we think this is the least worst way
to do it vs e.g. not using WTForms at all.
[^1]: https://github.com/wtforms/wtforms/issues/736
This isn't used and showing priorities when we only have a single
provider or where they have no effect is unnecessarily confusing.
Removing the form makes it clearer that there's only one way to
adjust priorities for domestic SMS providers.
If we add another email or international SMS provider in future,
we would need to rewrite the form here anyway as the priorities
need to be adjusted in tandem, not individually.
This results in some new errors from flake8-bugbear:
```
B020: Loop control variable overrides iterable it iterates
```
I can't see an issue with the places that we do this, so have ignored
these warnings. If we keep getting these and they look fine, we can
create a global rule to ignore B020.
Using "primary" made sense when the other "secondary" provider was
new, but today we see them as equivalent and the terminology is a
bit confusing. In future we may add a third provider as well.
This fixes a bug where a third inactive provider would (potentially)
appear in place of one of the two active ones, depending on the order
of its identifier compared to the other two.
In future we may look at simplifying this to cope with more than two
active providers. For now, the existing UI will continue to work when
we add a new, inactive SMS provider for Reach.
We already had different functionality for email branding and will
soon be adding more for email branding pools.
Note that the "get_available_choices" class method was only used for
email branding - we can do it in the constructor for letters.
I've also tweaked some of the names to make them clearer e.g. that
the form is used to apply a change to a service.
I've constrained the scope of this change to avoid forms that may
be accessible by non-admins in the future.
This was a lot of code to be in a form and it's going to get even
more complicated with email branding pools. Moving it out means we
can also simplify the tests that target this code.
These are about to become a lot less similar to each other when we
add email branding pools. Note that the optional *args and *kwargs
weren't used anywhere.
I've often struggled to find the form associated with a particular
page due to the overlapping names e.g. "SetEmailBranding" sounds
more like the radio button form a user sees than "BrandingOptions".
Almost every form in forms.py also ends with "Form", so this also
makes the branding forms consistent with that naming convention.
On the ‘find user’ page it says ‘sms_auth’ instead of ‘Text message
code’.
This commit fixes that, and adds a handy formatter so it’s easier to do
the right thing in the future.
