Initial commit

app/api/v2/admin/metrics.rb

@@ -0,0 +1,50 @@
+# frozen_string_literal: true
+
+module API
+  module V2
+    module Admin
+      # Metrics functionality
+      class Metrics < Grape::API
+        helpers do
+          def permitted_search_params(params)
+            params.slice(:created_from, :created_to, :topic, :action, :result).merge(with_user: false)
+          end
+        end
+
+        resource :metrics do
+          desc 'Returns main statistic in the given time period',
+            failure: [
+              { code: 401, message: 'Invalid bearer token' }
+            ]
+          params do
+            optional :created_from
+            optional :created_to
+          end
+          get do
+            admin_authorize! :read, User
+
+            result = {}
+
+            signup = API::V2::Queries::ActivityFilter.new(Activity.all).call(
+              permitted_search_params(params.merge(topic: 'account', action: 'signup', result: 'succeed'))
+            )
+            sucessful_login = API::V2::Queries::ActivityFilter.new(Activity.all).call(
+              permitted_search_params(params.merge(topic: 'session', action: 'login', result: 'succeed'))
+            )
+            failed_login = API::V2::Queries::ActivityFilter.new(Activity.all).call(
+              permitted_search_params(params.merge(topic: 'session', action: 'login', result: 'failed'))
+            )
+
+            result[:signups] = signup.group('date(created_at)').size
+            result[:sucessful_logins] = sucessful_login.group('date(created_at)').size
+            result[:failed_logins] = failed_login.group('date(created_at)').size
+
+            result[:pending_applications] = Label.where({ key: 'document', value: 'pending', scope: 'private' }).count
+
+            present result
+          end
+        end
+      end
+    end
+  end
+end