Bump utils to bring in recent changes to Template classes

The main things we have to account for are:
- `WithSubjectTemplate` has gone
- every template dictionary must have `template_type` set

app/main/views/conversation.py

@@ -117,6 +117,7 @@ def get_sms_thread(service_id, user_number):
             'inbound': is_inbound,
             'content': SMSPreviewTemplate(
                 {
+                    'template_type': 'sms',
                     'content': (
                         notification['content'] if is_inbound else
                         notification['template']['content']

app/main/views/index.py

@@ -128,6 +128,7 @@ def email_template():
         brand_name = email_branding['name']
 
     template = {
+        'template_type': 'email',
         'subject': 'foo',
         'content': (
             'Lorem Ipsum is simply dummy text of the printing and typesetting '
@@ -198,7 +199,7 @@ def letter_template():
     else:
         filename = 'no-branding'
 
-    template = {'subject': '', 'content': ''}
+    template = {'subject': '', 'content': '', 'template_type': 'letter'}
     image_url = url_for('no_cookie.letter_branding_preview_image', filename=filename)
 
     template_image = str(LetterImageTemplate(

app/main/views/jobs.py

@@ -13,7 +13,11 @@ from flask import (
 )
 from flask_login import current_user
 from notifications_python_client.errors import HTTPError
-from notifications_utils.template import Template, WithSubjectTemplate
+from notifications_utils.template import (
+    EmailPreviewTemplate,
+    LetterPreviewTemplate,
+    SMSPreviewTemplate,
+)
 
 from app import (
     current_service,
@@ -402,29 +406,37 @@ def get_job_partials(job):
 def add_preview_of_content_to_notifications(notifications):
 
     for notification in notifications:
+        yield(dict(
+            preview_of_content=get_preview_of_content(notification),
+            **notification
+        ))
 
-        if notification['template'].get('redact_personalisation'):
-            notification['personalisation'] = {}
 
-        if notification['template']['template_type'] == 'sms':
-            yield dict(
-                preview_of_content=str(Template(
-                    notification['template'],
-                    notification['personalisation'],
-                    redact_missing_personalisation=True,
-                )),
-                **notification
-            )
-        else:
-            if notification['template']['is_precompiled_letter']:
-                notification['template']['subject'] = notification['client_reference']
-            yield dict(
-                preview_of_content=(
-                    WithSubjectTemplate(
-                        notification['template'],
-                        notification['personalisation'],
-                        redact_missing_personalisation=True,
-                    ).subject
-                ),
-                **notification
-            )
+def get_preview_of_content(notification):
+
+    if notification['template'].get('redact_personalisation'):
+        notification['personalisation'] = {}
+
+    if notification['template']['is_precompiled_letter']:
+        return notification['client_reference']
+
+    if notification['template']['template_type'] == 'sms':
+        return str(SMSPreviewTemplate(
+            notification['template'],
+            notification['personalisation'],
+            redact_missing_personalisation=True,
+            show_prefix=False,
+        ))
+
+    if notification['template']['template_type'] == 'email':
+        return EmailPreviewTemplate(
+            notification['template'],
+            notification['personalisation'],
+            redact_missing_personalisation=True,
+        ).subject
+
+    if notification['template']['template_type'] == 'letter':
+        return LetterPreviewTemplate(
+            notification['template'],
+            notification['personalisation'],
+        ).subject

app/main/views/styleguide.py

@@ -1,6 +1,6 @@
 from flask import abort, current_app, render_template
 from flask_wtf import FlaskForm as Form
-from notifications_utils.template import Template
+from notifications_utils.template import SMSPreviewTemplate
 from wtforms import (
     FileField,
     PasswordField,
@@ -31,7 +31,7 @@ def styleguide():
     form.message.data = sms
     form.validate()
 
-    template = Template({'content': sms})
+    template = SMSPreviewTemplate({'content': sms, 'template_type': 'sms'})
 
     return render_template(
         'views/styleguide.html',

requirements-app.txt

@@ -22,5 +22,5 @@ notifications-python-client==5.5.1
 awscli-cwlogs>=1.4,<1.5
 itsdangerous==1.1.0
 
-git+https://github.com/alphagov/notifications-utils.git@36.12.2#egg=notifications-utils==36.12.2
+git+https://github.com/alphagov/notifications-utils.git@37.0.0#egg=notifications-utils==37.0.0
 git+https://github.com/alphagov/govuk-frontend-jinja.git@v0.5.1-alpha#egg=govuk-frontend-jinja==0.5.1-alpha

requirements.txt

@@ -24,7 +24,7 @@ notifications-python-client==5.5.1
 awscli-cwlogs>=1.4,<1.5
 itsdangerous==1.1.0
 
-git+https://github.com/alphagov/notifications-utils.git@36.12.2#egg=notifications-utils==36.12.2
+git+https://github.com/alphagov/notifications-utils.git@37.0.0#egg=notifications-utils==37.0.0
 git+https://github.com/alphagov/govuk-frontend-jinja.git@v0.5.1-alpha#egg=govuk-frontend-jinja==0.5.1-alpha
 
 ## The following requirements were added by pip freeze: