Work around holidays

lib/app.rb

@@ -7,25 +7,23 @@ set :root, File.expand_path('..', File.dirname(__FILE__))
 
 helpers do
   def redirect_to_api
-    if request.host =~ /^f/
-      redirect request.url.sub %r(://f), '://api.f'
+    if request.url.include? 'https://f'
+      redirect request.url.sub %r{//}, '//api.'
     end
   end
 
   # Ugly as fuck.
   def snapshot
-    symbols = params.delete('symbols') || params.delete('currencies')
-
-    quote = Snapshot
+    quotes = Snapshot
       .new(params)
       .quote
 
-    if symbols
+    if symbols = params.delete('symbols') || params.delete('currencies')
       symbols = symbols.split ','
-      quote[:rates].keep_if { |k, v| symbols.include? k }
+      quotes[:rates].keep_if { |k, _| symbols.include? k }
     end
 
-    quote
+    quotes
   end
 end
 

lib/snapshot.rb

@@ -5,9 +5,20 @@ class Snapshot
   include Virtus
 
   attribute :base,  String, default: 'EUR'
-  attribute :date,  Date,   default: proc { Currency.last_date }
+  attribute :date,  Date
 
   def quote
+    self.date =
+      if date
+        Currency
+          .where("date <= '#{date}'")
+          .order(:date)
+          .last
+          .date
+      else
+        Currency.last_date
+      end
+
     attributes.merge rates: rebase(rates)
   end
 

spec/app_spec.rb

@@ -30,7 +30,6 @@ describe 'the application' do
   end
 
   it 'works around holidays' do
-    skip 'an "oh, wow" feature'
     get '/2010-01-01'
     json['rates'].wont_be :empty?
   end