lib/cardano_wallet/utils.rb in cardano_wallet-0.2.1 vs lib/cardano_wallet/utils.rb in cardano_wallet-0.2.2

@@ -3,16 +3,27 @@
 
     def self.verify_param_is_hash!(param)
       raise ArgumentError, "argument should be Hash" unless param.is_a?(Hash)
     end
 
+    def self.verify_param_is_array!(param)
+      raise ArgumentError, "argument should be Array" unless param.is_a?(Array)
+    end
+
+    ##
+    # @param payments [Array of Hashes] - [{addr1: 1}, {addr2: 2}]
+    # @return [Array of Hashes] - [{:address=>"addr1", :amount=>{:quantity=>1, :unit=>"lovelace"}}, {:address=>"addr2", :amount=>{:quantity=>2, :unit=>"lovelace"}}]
     def self.format_payments(payments)
-      verify_param_is_hash!(payments)
-      payments.collect do |addr, amt|
-        {:address => addr.to_s,
-         :amount => {:quantity => amt.to_i,
-                     :unit => "lovelace"}
-        }
+      verify_param_is_array!(payments)
+      raise ArgumentError, "argument should be Array of single Hashes" unless payments.all?{|p| p.size == 1 && p.is_a?(Hash)}
+      payments.map do |p|
+        a = p.collect do |addr, amt|
+          {:address => addr.to_s,
+           :amount => {:quantity => amt.to_i,
+                       :unit => "lovelace"}
+          }
+        end.flatten
+        Hash[*a]
       end
     end
 
     def self.to_query(query)
       verify_param_is_hash!(query)