[data][s]: add another resource with data per country.

We have a resource with data by province but it is not aggregated by country, e.g., if you need data for China you'd need to sum up all its provinces.

process.py

@@ -1,4 +1,4 @@
-from dataflows import Flow, load, unpivot, find_replace, set_type, dump_to_path, update_package, update_resource, update_schema, join, join_with_self, add_computed_field, delete_fields, checkpoint, duplicate
+from dataflows import Flow, load, unpivot, find_replace, set_type, dump_to_path, update_package, update_resource, update_schema, join, join_with_self, add_computed_field, delete_fields, checkpoint, duplicate, filter_rows
 
 BASE_URL = 'https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_time_series/'
 CONFIRMED = 'time_series_19-covid-Confirmed.csv'
@@ -19,6 +19,10 @@ unpivoting_fields = [
 extra_keys = [{'name': 'Date', 'type': 'string'} ]
 extra_value = {'name': 'Case', 'type': 'number'}
 
+def is_key_country(row):
+    key_countries = ['Chine', 'US', 'United Kingdom', 'Italy', 'France', 'Germany']
+    return row['Country'] in key_countries
+
 Flow(
       load(f'{BASE_URL}{CONFIRMED}'),
       load(f'{BASE_URL}{RECOVERED}'),
@@ -115,7 +119,7 @@ Flow(
       duplicate(
         source='time-series-19-covid-combined',
         target_name='worldwide-aggregated',
-        target_path='worldwide-aggregated.csv'
+        target_path='data/worldwide-aggregated.csv'
       ),
       join_with_self(
         resource_name='worldwide-aggregated',
@@ -166,6 +170,72 @@ Flow(
           "type": "integer"
         }
       ]),
+      checkpoint('processed_worldwide_data'),
+      # Create another resource with countries aggregated
+      duplicate(
+        source='time-series-19-covid-combined',
+        target_name='countries-aggregated',
+        target_path='data/countries-aggregated.csv'
+      ),
+      join_with_self(
+        resource_name='countries-aggregated',
+        join_key=['Date', 'Country/Region'],
+        fields=dict(
+            Date={
+                'name': 'Date'
+            },
+            Country={
+                'name': 'Country/Region'
+            },
+            Confirmed={
+                'name': 'Confirmed',
+                'aggregate': 'sum'
+            },
+            Recovered={
+                'name': 'Recovered',
+                'aggregate': 'sum'
+            },
+            Deaths={
+                'name': 'Deaths',
+                'aggregate': 'sum'
+            }
+        )
+      ),
+      update_schema('countries-aggregated', fields=[
+        {
+          "format": "%Y-%m-%d",
+          "name": "Date",
+          "type": "date"
+        },
+        {
+          "format": "default",
+          "name": "Country",
+          "type": "string"
+        },
+        {
+          "format": "default",
+          "groupChar": "",
+          "name": "Confirmed",
+          "title": "Cumulative total confirmed cases to date",
+          "type": "integer"
+        },
+        {
+          "format": "default",
+          "groupChar": "",
+          "name": "Recovered",
+          "title": "Cumulative total recovered cases to date",
+          "type": "integer"
+        },
+        {
+          "format": "default",
+          "groupChar": "",
+          "name": "Deaths",
+          "title": "Cumulative total deaths to date",
+          "type": "integer"
+        }
+      ]),
+      checkpoint('processed_country_data'),
+      # Prepare data package (name, title) and add views
       update_package(
         name='covid-19',
         title='Novel Coronavirus 2019',