Initial commit

app/api/v2/account/balances.rb

@@ -0,0 +1,75 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+module API
+  module V2
+    module Account
+      class Balances < Grape::API
+
+        helpers ::API::V2::ParamHelpers
+
+        # TODO: Add failures.
+        # TODO: Move desc hash options to block once issues are resolved.
+        # https://github.com/ruby-grape/grape/issues/1789
+        # https://github.com/ruby-grape/grape-swagger/issues/705
+        desc 'Get list of user accounts',
+            is_array: true,
+            success: API::V2::Entities::Account
+        params do
+          use :pagination
+          optional :nonzero,
+                   type: { value: Boolean, message: 'account.balances.invalid_nonzero' },
+                   default: false,
+                   desc: 'Filter non zero balances.'
+          optional :search, type: JSON, default: {} do
+            optional :currency_code,
+                     as: :code,
+                     type: String
+            optional :currency_name,
+                     as: :name,
+                     type: String
+          end
+        end
+        get '/balances' do
+          user_authorize! :read, ::Operations::Account
+
+          search_params = params[:search]
+                                .slice(:code, :name)
+                                .transform_keys {|k| "#{k}_cont"}
+                                .merge(m: 'or')
+
+          accounts = ::Currency.visible.ransack(search_params).result.each_with_object([]) do |c, result|
+            account = ::Account.find_by(currency: c, member: current_user)
+            if account.present?
+              next if params[:nonzero].present? && account.amount.zero? && account.locked.zero?
+
+              result << account
+            elsif account.blank? && params[:nonzero].blank?
+              result << ::Account.new(currency: c, member: current_user)
+            end
+          end
+
+          present paginate(accounts),
+                  with: Entities::Account, current_user: current_user
+        end
+
+        desc 'Get user account by currency' do
+          success API::V2::Entities::Account
+          # TODO: Add failures.
+        end
+        params do
+          requires :currency,
+                   type: String,
+                   values: { value: -> { Currency.visible.pluck(:id) }, message: 'account.currency.doesnt_exist' },
+                   desc: 'The currency code.'
+        end
+        get '/balances/:currency', requirements: { currency: /[\w\.\-]+/ }  do
+          user_authorize! :read, ::Operations::Account
+
+          present current_user.accounts.visible.find_by!(currency_id: params[:currency]),
+                  with: API::V2::Entities::Account
+        end
+      end
+    end
+  end
+end