Do not allow to send a letter template longer than 10 pages

app/main/views/templates.py

@@ -74,6 +74,7 @@ def view_template(service_id, template_id):
         ),
         template_postage=template["postage"],
         user_has_template_permission=user_has_template_permission,
+        page_count=get_page_count_for_letter(template),
     )
 
 

app/templates/views/templates/_template.html

@@ -15,7 +15,7 @@
     <div class="bottom-gutter-2-3">
       <div class="grid-row">
         {% if template.template_type == 'letter' %}
-          {% if current_user.has_permissions('send_messages', restrict_admin_usage=True) %}
+          {% if current_user.has_permissions('send_messages', restrict_admin_usage=True) and page_count < 11 %}
             <div class="column-half">
               <a href="{{ url_for(".set_sender", service_id=current_service.id, template_id=template.id) }}" class="pill-separate-item">
                 Send

tests/app/main/views/test_templates.py

@@ -521,6 +521,30 @@ def test_view_non_letter_template_does_not_display_postage(
     assert "Postage" not in page.text
 
 
+def test_view_letter_template_does_not_display_send_button_if_template_over_10_pages_long(
+    client_request,
+    service_one,
+    mock_get_service_templates,
+    mock_get_template_folders,
+    single_letter_contact_block,
+    mock_has_jobs,
+    active_user_with_permissions,
+    mocker,
+    fake_uuid,
+):
+    mocker.patch('app.main.views.templates.get_page_count_for_letter', return_value=11)
+    client_request.login(active_user_with_permissions)
+    mock_get_service_letter_template(mocker, postage="second")
+    page = client_request.get(
+        'main.view_template',
+        service_id=SERVICE_ONE_ID,
+        template_id=fake_uuid,
+        _test_page_title=False,
+    )
+
+    assert "Send" not in page.text
+
+
 def test_edit_letter_template_postage_page_displays_correctly(
     client_request,
     service_one,