Show monthly usage by SMS provider on Providers page

This adds a '% monthly traffic' column to the SMS table on the Providers page
to let us see how much traffic is being sent to each SMS provider.

app/main/views/providers.py

@@ -22,6 +22,8 @@ def view_providers():
         elif provider['notification_type'] == 'email':
             domestic_email_providers.append(provider)
 
+    add_monthly_traffic(domestic_sms_providers)
+
     return render_template(
         'views/providers/providers.html',
         email_providers=domestic_email_providers,
@@ -30,6 +32,17 @@ def view_providers():
     )
 
 
+def add_monthly_traffic(domestic_sms_providers):
+    total_sms_sent = sum(provider.get('current_month_billable_sms', 0) for provider in domestic_sms_providers)
+
+    for provider in domestic_sms_providers:
+        if provider.get('current_month_billable_sms'):
+            percentage = (provider['current_month_billable_sms'] / total_sms_sent * 100) if total_sms_sent else 0
+            provider['monthly_traffic'] = round(percentage)
+        else:
+            provider['monthly_traffic'] = 0
+
+
 @main.route("/provider/<provider_id>/edit", methods=['GET', 'POST'])
 @login_required
 @user_is_platform_admin

app/templates/views/providers/providers.html

@@ -17,7 +17,7 @@ Providers
       caption="Domestic SMS providers",
       caption_visible=False,
       empty_message='No domestic sms providers',
-      field_headings=['Provider', 'Priority', 'Active', 'Last Updated', 'Updated By'],
+      field_headings=['Provider', 'Priority', '% monthly traffic', 'Active', 'Last Updated', 'Updated By'],
       field_headings_visible=True
   ) %}
 
@@ -25,6 +25,8 @@ Providers
 
       {{ text_field(item.priority) }}
 
+      {{ text_field(item.monthly_traffic) }}
+
       {{ text_field(item.active) }}
 
       {% if item.updated_at %}

tests/app/main/views/test_providers.py

@@ -6,6 +6,7 @@ from bs4 import BeautifulSoup
 from flask import url_for
 
 import app
+from app.main.views.providers import add_monthly_traffic
 
 stub_providers = {
     'provider_details': [
@@ -23,7 +24,8 @@ stub_providers = {
                 'name': 'Test User',
                 'id': '7cc1dddb-bcbc-4739-8fc1-61bedde3332a'
             },
-            'supports_international': False
+            'supports_international': False,
+            'current_month_billable_sms': 5020,
         },
         {
             'id': '0bd529cd-a0fd-43e5-80ee-b95ef6b0d51f',
@@ -35,7 +37,8 @@ stub_providers = {
             'updated_at': None,
             'version': 1,
             'created_by': None,
-            'supports_international': False
+            'supports_international': False,
+            'current_month_billable_sms': 6891,
         },
         {
             'id': '6005e192-4738-4962-beec-ebd982d0b03a',
@@ -170,10 +173,11 @@ def test_should_show_all_providers(
     assert table_data[0].find_all("a")[0]['href'] == '/provider/6005e192-4738-4962-beec-ebd982d0b03f'
     assert table_data[0].text.strip() == "Domestic SMS Provider"
     assert table_data[1].text.strip() == "1"
-    assert table_data[2].text.strip() == "True"
-    assert table_data[3].text.strip() == "16 January at 3:20pm"
-    assert table_data[4].text.strip() == "Test User"
-    assert table_data[5].find_all("a")[0]['href'] == '/provider/6005e192-4738-4962-beec-ebd982d0b03f/edit'
+    assert table_data[2].text.strip() == "42"
+    assert table_data[3].text.strip() == "True"
+    assert table_data[4].text.strip() == "16 January at 3:20pm"
+    assert table_data[5].text.strip() == "Test User"
+    assert table_data[6].find_all("a")[0]['href'] == '/provider/6005e192-4738-4962-beec-ebd982d0b03f/edit'
 
     domestic_sms_second_row = domestic_sms_table.tbody.find_all('tr')[1]
     table_data = domestic_sms_second_row.find_all('td')
@@ -181,10 +185,11 @@ def test_should_show_all_providers(
     assert table_data[0].find_all("a")[0]['href'] == '/provider/0bd529cd-a0fd-43e5-80ee-b95ef6b0d51f'
     assert table_data[0].text.strip() == "Second Domestic SMS Provider"
     assert table_data[1].text.strip() == "2"
-    assert table_data[2].text.strip() == "True"
-    assert table_data[3].text.strip() == "None"
+    assert table_data[2].text.strip() == "58"
+    assert table_data[3].text.strip() == "True"
     assert table_data[4].text.strip() == "None"
-    assert table_data[5].find_all("a")[0]['href'] == '/provider/0bd529cd-a0fd-43e5-80ee-b95ef6b0d51f/edit'
+    assert table_data[5].text.strip() == "None"
+    assert table_data[6].find_all("a")[0]['href'] == '/provider/0bd529cd-a0fd-43e5-80ee-b95ef6b0d51f/edit'
 
     domestic_email_first_row = domestic_email_table.tbody.find_all('tr')[0]
     domestic_email_table_data = domestic_email_first_row.find_all('td')
@@ -222,6 +227,33 @@ def test_should_show_all_providers(
     assert table_data[5].find_all("a")[0]['href'] == '/provider/67c770f5-918e-4afa-a5ff-880b9beb161d/edit'
 
 
+def test_add_monthly_traffic():
+    domestic_sms_providers = [{
+        'identifier': 'mmg',
+        'current_month_billable_sms': 27,
+    }, {
+        'identifier': 'firetext',
+        'current_month_billable_sms': 5,
+    }, {
+        'identifier': 'loadtesting',
+    }]
+
+    add_monthly_traffic(domestic_sms_providers)
+
+    assert domestic_sms_providers == [{
+        'identifier': 'mmg',
+        'current_month_billable_sms': 27,
+        'monthly_traffic': 84
+    }, {
+        'identifier': 'firetext',
+        'current_month_billable_sms': 5,
+        'monthly_traffic': 16
+    }, {
+        'identifier': 'loadtesting',
+        'monthly_traffic': 0
+    }]
+
+
 def test_should_show_edit_provider_form(
     client,
     platform_admin_user,