Initial commit

app/api/v2/account/stats.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module API
+  module V2
+    module Account
+      class Stats < Grape::API
+        desc 'Get assets pnl calculated into one currency'
+        params do
+          optional :pnl_currency,
+                   type: String,
+                   values: { value: -> { Currency.visible.codes(bothcase: true) }, message: 'pnl.currency.doesnt_exist' },
+                   desc: 'Currency code in which the PnL is calculated'
+        end
+        get '/stats/pnl' do
+          user_authorize! :read, ::StatsMemberPnl
+
+          query = 'SELECT pnl_currency_id, currency_id, total_credit, total_debit, total_credit_value, total_debit_value, ' \
+                  'total_credit_value / NULLIF(total_credit, 0) "average_buy_price", ' \
+                  'total_debit_value / NULLIF(total_debit, 0) "average_sell_price", ' \
+                  'average_balance_price, total_balance_value ' \
+                  'FROM stats_member_pnl WHERE member_id = ?'
+          conditions = [current_user.id]
+
+          if params[:pnl_currency].present?
+            query += ' AND pnl_currency_id = ?'
+            conditions << params[:pnl_currency]
+          end
+
+          squery = ActiveRecord::Base.sanitize_sql_for_conditions([query] + conditions)
+          result = ActiveRecord::Base.connection.exec_query(squery).to_hash
+          present result.each(&:symbolize_keys!), with: API::V2::Entities::Pnl
+        end
+      end
+    end
+  end
+end