Add a page to set organisation and branding option

Platform admin only.

Adds radio buttons to choose one of:
- three hard-coded branding options
- organisations from a list provided by the API

app/main/forms.py

@@ -338,3 +338,29 @@ class ServiceSmsSender(Form):
         import re
         if field.data and not re.match('^[a-zA-Z0-9\s]+$', field.data):
             raise ValidationError('Sms text message sender can only contain alpha-numeric characters')
+
+
+class ServiceBrandingOrg(Form):
+
+    def __init__(self, organisations=[], *args, **kwargs):
+        self.organisation.choices = organisations
+        super(ServiceBrandingOrg, self).__init__(*args, **kwargs)
+
+    branding_type = RadioField(
+        'Branding',
+        choices=[
+            ('govuk', 'GOV.UK only'),
+            ('both', 'GOV.UK and organisation'),
+            ('org', 'Organisation only')
+        ],
+        validators=[
+            DataRequired()
+        ]
+    )
+
+    organisation = RadioField(
+        'Organisation',
+        validators=[
+            DataRequired()
+        ]
+    )

app/main/views/service_settings.py

@@ -24,10 +24,10 @@ from app.main.forms import (
     ServiceNameForm,
     RequestToGoLiveForm,
     ServiceReplyToEmailFrom,
-    ServiceSmsSender
+    ServiceSmsSender,
+    ServiceBrandingOrg
 )
-from app import user_api_client
-from app import current_service
+from app import user_api_client, current_service, organisations_client
 
 
 @main.route("/services/<service_id>/service-settings")
@@ -266,3 +266,50 @@ def service_set_sms_sender(service_id):
     return render_template(
         'views/service-settings/set-sms-sender.html',
         form=form)
+
+
+@main.route("/services/<service_id>/service-settings/set-branding-and-org", methods=['GET', 'POST'])
+@login_required
+@user_has_permissions(admin_override=True)
+def service_set_branding_and_org(service_id):
+
+    print(">>>"*30)
+    print("fffffuuuuu")
+
+    organisations = organisations_client.get_organisations()
+
+    # get current service branding
+    form = ServiceBrandingOrg(
+        branding_type=current_service.get('branding'),
+        organisation=current_service.get('organisation')
+    )
+    form.organisation.choices = [('', 'None')] + get_branding_as_value_and_label(organisations)
+
+    if form.validate_on_submit():
+        service_api_client.update_service(
+            service_id,
+            branding=form.branding_type.data,
+            organisation=form.organisation.data
+        )
+        return redirect(url_for('.service_settings', service_id=service_id))
+    return render_template(
+        'views/service-settings/set-branding-and-org.html',
+        form=form,
+        branding_dict=get_branding_as_dict(organisations)
+    )
+
+
+def get_branding_as_value_and_label(organisations):
+    return [
+        (organisation['id'], organisation['name'])
+        for organisation in organisations
+    ]
+
+
+def get_branding_as_dict(organisations):
+    return {
+        organisation['id']: {
+            'logo': '/static/images/email-template/crests/{}'.format(organisation['logo']),
+            'colour': organisation['colour']
+        } for organisation in organisations
+    }