kraken_adapter.rb in currency-rate-1.4.1

- old
+ new
@@ -1,22 +1,33 @@
 module CurrencyRate
   class KrakenAdapter < Adapter
-    FETCH_URL = {
-      "BTC_USD" => "https://api.kraken.com/0/public/Ticker?pair=xbtusd",
-      "BTC_EUR" => "https://api.kraken.com/0/public/Ticker?pair=xbteur",
-      "LTC_USD" => "https://api.kraken.com/0/public/Ticker?pair=ltcusd",
-      "LTC_EUR" => "https://api.kraken.com/0/public/Ticker?pair=ltceur",
-    }
+    SUPPORTED_CURRENCIES = %w(
+      ADA BCH BSV BTC DASH EOS ETC ETH GNO LTC MLN
+      NMC QTUM REP USDT XDG XLM XMR XRP XTZ ZEC
+    )
 
     ASSET_MAP = {
-      "BTC" => "XBT",
-    }
+                  "XXBTZ" => "BTC",
+                  "XETCZ" => "ETC",
+                  "XETHZ" => "ETH",
+                  "XLTCZ" => "LTC",
+                  "XREPZ" => "REP",
+                  "XXLMZ" => "XLM",
+                  "XXMRZ" => "XMR",
+                  "XXRPZ" => "XRP",
+                  "XZECZ" => "ZEC",
+                  "USDTZ" => "USDT",
+                  "TZUSD" => "USDT",
+                }
 
+    ANCHOR_CURRENCY = "USD"
+
+    FETCH_URL = "https://api.kraken.com/0/public/Ticker?pair=#{ %w(ADAUSD BCHUSD BSVUSD DASHUSD EOSUSD GNOUSD QTUMUSD XTZUSD USDTZUSD XETCZUSD XETHZUSD XLTCZUSD XREPZUSD XXLMZUSD XXMRZUSD XXRPZUSD XZECZUSD XXBTZUSD).join(",") }"
+
     def normalize(data)
       return nil unless super
-      data.reduce({}) do |result, (pair, value)|
-        crypto, fiat = pair.split("_")
-        result[pair] = BigDecimal.new(value["result"]["X#{ta(crypto)}Z#{ta(fiat)}"]["c"].first.to_s)
+      data["result"].reduce({ "anchor" => ANCHOR_CURRENCY, ANCHOR_CURRENCY => BigDecimal.new("1") }) do |result, (pair, value)|
+        result[ta(pair.sub(ANCHOR_CURRENCY, ""))] = 1 / BigDecimal.new(value["c"].first.to_s)
         result
       end
     end
 
     def translate_asset(asset)