Nusax OrderBook

lib/cryptoexchange/exchanges/nusax/services/order_book.rb

@@ -0,0 +1,42 @@
+module Cryptoexchange::Exchanges
+  module Nusax
+    module Services
+      class OrderBook < Cryptoexchange::Services::Market
+        class << self
+          def supports_individual_ticker_query?
+            true
+          end
+        end
+
+        def fetch(market_pair)
+          output = super(ticker_url(market_pair))
+          adapt(output, market_pair)
+        end
+
+        def ticker_url(market_pair)
+          "#{Cryptoexchange::Exchanges::Nusax::Market::API_URL}/depth?market=#{market_pair.base}#{market_pair.target}&limit=300"
+        end
+
+        def adapt(output, market_pair)
+          order_book = Cryptoexchange::Models::OrderBook.new
+          order_book.base      = market_pair.base
+          order_book.target    = market_pair.target
+          order_book.market    = Nusax::Market::NAME
+          order_book.asks      = adapt_orders(output['asks'])
+          order_book.bids      = adapt_orders(output['bids'])
+          order_book.timestamp = output['timestamp']
+          order_book.payload   = output
+          order_book
+        end
+
+        def adapt_orders(orders)
+          orders.collect do |order_entry|
+            Cryptoexchange::Models::Order.new(price: order_entry[0],
+                                              amount: order_entry[1],
+                                              timestamp: nil)
+          end
+        end
+      end
+    end
+  end
+end

spec/exchanges/nusax/integration/market_spec.rb

@@ -35,4 +35,36 @@
 
     expect(ticker.payload).to_not be nil
   end
+
+  it 'fetch order book' do
+    order_book = client.order_book(pair)
+
+    expect(order_book.base).to eq 'ETH'
+    expect(order_book.target).to eq 'BTC'
+    expect(order_book.market).to eq 'nusax'
+    expect(order_book.asks).to_not be_empty
+    expect(order_book.bids).to_not be_empty
+    expect(order_book.asks.first.price).to_not be_nil
+    expect(order_book.bids.first.amount).to_not be_nil
+    expect(order_book.asks.count).to be > 10
+    expect(order_book.bids.count).to be > 10
+    expect(order_book.timestamp).to be_a Numeric
+    expect(order_book.payload).to_not be nil
+  end
+
+  # it 'fetch trade' do
+  #   trades = client.trades(pair)
+  #   trade = trades.sample
+  #
+  #   expect(trades).to_not be_empty
+  #   expect(trade.base).to eq 'ETH'
+  #   expect(trade.target).to eq 'BTC'
+  #   expect(trade.market).to eq 'nusax'
+  #   expect(trade.trade_id).to_not be_nil
+  #   expect(['buy', 'sell']).to include trade.type
+  #   expect(trade.price).to_not be_nil
+  #   expect(trade.amount).to_not be_nil
+  #   expect(trade.timestamp).to be_a Numeric
+  #   expect(trade.payload).to_not be nil
+  # end
 end