Add present year energy_flow data export

app/controllers/api/v3/export_controller.rb

@@ -19,11 +19,18 @@ def production_parameters
 
       # GET /api/v3/scenarios/:id/energy_flow
       #
-      # Returns a CSV file containing the energetic inputs and outputs of every node in the graph.
+      # Returns a CSV file containing the energetic inputs and outputs of every node in the future graph.
       def energy_flow
         send_csv(NodeFlowSerializer.new(@scenario.gql.future.graph, 'MJ'), 'energy_flow.%d.csv')
       end
 
+      # GET /api/v3/scenarios/:id/energy_flow_present
+      #
+      # Returns a CSV file containing the energetic inputs and outputs of every node in the present graph.
+      def energy_flow_present
+        send_csv(NodeFlowSerializer.new(@scenario.gql.present.graph, 'MJ'), 'energy_flow_present.%d.csv')
+      end
+
       # GET /api/v3/scenarios/:id/molecule_flow
       #
       # Returns a CSV file containing the flow of molecules through the molecule graph.

config/routes.rb

@@ -21,6 +21,7 @@
           get :batch
           get :production_parameters,   to: 'export#production_parameters'
           get :energy_flow,            to: 'export#energy_flow'
+          get :energy_flow_present,    to: 'export#energy_flow_present'
           get :molecule_flow,          to: 'export#molecule_flow'
           get :costs_parameters,       to: 'export#costs_parameters'
           get :sankey,                 to: 'export#sankey'

spec/controllers/api/v3/exports_controller_spec.rb

@@ -7,7 +7,7 @@
   let(:user) { create(:user) }
   let(:headers) { access_token_header(user, :write) }
 
-  describe 'GET energy_flows.csv' do
+  describe 'GET energy_flow.csv' do
     before do
       request.headers.merge!(headers)
       get :energy_flow, params: { id: scenario.id }, format: :csv
@@ -30,6 +30,29 @@
     end
   end
 
+  describe 'GET energy_flow_present.csv' do
+    before do
+      request.headers.merge!(headers)
+      get :energy_flow_present, params: { id: scenario.id }, format: :csv
+    end
+
+    it 'is successful' do
+      expect(response).to be_ok
+    end
+
+    it 'sets the content type to text/csv' do
+      expect(response.media_type).to eq('text/csv')
+    end
+
+    it 'sets the CSV filename' do
+      expect(response.headers['Content-Disposition']).to include("energy_flow_present.#{scenario.id}.csv")
+    end
+
+    it 'renders the CSV' do
+      expect(response.body).to eq(NodeFlowSerializer.new(scenario.gql.present.graph, 'MJ').as_csv)
+    end
+  end
+
   describe 'GET molecule_flows.csv' do
     before do
       request.headers.merge!(headers)