Replace sevice api client get template calls with Service methods

Instead of using the API client directly views are now calling one
of two Service model methods:

`get_template` is used for view actions, where the user should see
the template page even if they don't have access to the template
folder (since all templates are still inked from the dashboard or
the sent notifications pages).

`get_template_with_user_permission_or_403` will check if the user
has access to the template's folder first and return 403 otherwise.
This method is used for any endpoints that result in an action: editing
template attributes, deleting templates or sending messages.

tests/app/main/views/test_send.py

@@ -1823,7 +1823,7 @@ def test_send_test_works_as_letter_preview(
         )
     )
 
-    mock_get_service_letter_template.assert_called_with(service_id, template_id)
+    mock_get_service_letter_template.assert_called_with(service_id, template_id, None)
 
     assert response.status_code == 200
     assert response.get_data(as_text=True) == 'foo'
@@ -2187,7 +2187,7 @@ def test_should_show_preview_letter_message(
         )
     )
 
-    mock_get_service_letter_template.assert_called_with(service_id, template_id)
+    mock_get_service_letter_template.assert_called_with(service_id, template_id, None)
 
     assert response.status_code == 200
     assert response.get_data(as_text=True) == 'foo'
@@ -3121,6 +3121,7 @@ def test_send_notification_submits_data(
     client_request,
     fake_uuid,
     mock_send_notification,
+    mock_get_service_template,
     template,
     recipient,
     placeholders,
@@ -3150,6 +3151,7 @@ def test_send_notification_clears_session(
     service_one,
     fake_uuid,
     mock_send_notification,
+    mock_get_service_template,
 ):
     with client_request.session_transaction() as session:
         session['recipient'] = '07700900001'
@@ -3195,6 +3197,7 @@ def test_send_notification_redirects_to_view_page(
     client_request,
     fake_uuid,
     mock_send_notification,
+    mock_get_service_template,
     extra_args,
     extra_redirect_args
 ):

tests/app/main/views/test_templates.py

@@ -347,7 +347,7 @@ def test_should_show_page_for_one_template(
         page.select_one('textarea')
     )
     assert "priority" not in str(page.select_one('main'))
-    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, template_id)
+    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, template_id, None)
 
 
 def test_caseworker_redirected_to_one_off(
@@ -703,13 +703,14 @@ def test_should_show_page_template_with_priority_select_if_platform_admin(
     platform_admin_user,
     mocker,
     mock_get_service_template,
+    service_one,
     fake_uuid,
 ):
     mocker.patch('app.user_api_client.get_users_for_service', return_value=[platform_admin_user])
     template_id = fake_uuid
     response = logged_in_platform_admin_client.get(url_for(
         '.edit_service_template',
-        service_id='1234',
+        service_id=service_one['id'],
         template_id=template_id,
     ))
 
@@ -717,7 +718,7 @@ def test_should_show_page_template_with_priority_select_if_platform_admin(
     assert "Two week reminder" in response.get_data(as_text=True)
     assert "Template <em>content</em> with & entity" in response.get_data(as_text=True)
     assert "Use priority queue?" in response.get_data(as_text=True)
-    mock_get_service_template.assert_called_with('1234', template_id)
+    mock_get_service_template.assert_called_with(service_one['id'], template_id, None)
 
 
 @pytest.mark.parametrize('filetype', ['pdf', 'png'])
@@ -752,7 +753,7 @@ def test_should_show_preview_letter_templates(
 
     assert response.status_code == 200
     assert response.get_data(as_text=True) == 'foo'
-    mock_get_service_email_template.assert_called_with(service_id, template_id, **extra_view_args)
+    mock_get_service_email_template.assert_called_with(service_id, template_id, extra_view_args.get('version'))
     assert mocked_preview.call_args[0][0]['id'] == template_id
     assert mocked_preview.call_args[0][0]['service'] == service_id
     assert mocked_preview.call_args[0][1] == filetype
@@ -1661,7 +1662,7 @@ def test_should_show_delete_template_page_with_time_block(
     assert normalize_spaces(page.select('.sms-message-wrapper')[0].text) == (
         'service one: Template <em>content</em> with & entity'
     )
-    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid)
+    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid, None)
 
 
 def test_should_show_delete_template_page_with_time_block_for_empty_notification(
@@ -1691,7 +1692,7 @@ def test_should_show_delete_template_page_with_time_block_for_empty_notification
     assert normalize_spaces(page.select('.sms-message-wrapper')[0].text) == (
         'service one: Template <em>content</em> with & entity'
     )
-    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid)
+    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid, None)
 
 
 def test_should_show_delete_template_page_with_never_used_block(
@@ -1716,7 +1717,7 @@ def test_should_show_delete_template_page_with_never_used_block(
     assert normalize_spaces(page.select('.sms-message-wrapper')[0].text) == (
         'service one: Template <em>content</em> with & entity'
     )
-    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid)
+    mock_get_service_template.assert_called_with(SERVICE_ONE_ID, fake_uuid, None)
 
 
 @pytest.mark.parametrize('parent', (
@@ -1749,7 +1750,7 @@ def test_should_redirect_when_deleting_a_template(
     )
 
     mock_get_service_template.assert_called_with(
-        SERVICE_ONE_ID, TEMPLATE_ONE_ID
+        SERVICE_ONE_ID, TEMPLATE_ONE_ID, None
     )
     mock_delete_service_template.assert_called_with(
         SERVICE_ONE_ID, TEMPLATE_ONE_ID
@@ -1780,7 +1781,7 @@ def test_should_show_page_for_a_deleted_template(
     assert page.select('p.hint')[0].text.strip() == 'This template was deleted today at 3:00pm.'
     assert 'Delete this template' not in page.select_one('main').text
 
-    mock_get_deleted_template.assert_called_with(SERVICE_ONE_ID, template_id)
+    mock_get_deleted_template.assert_called_with(SERVICE_ONE_ID, template_id, None)
 
 
 @pytest.mark.parametrize('route', [