Refactor Calefaction::EVE.

lib/calefaction/eve.rb

@@ -4,23 +4,27 @@ module Calefaction::EVE
   extend self
 
   class APIUser
-    def initialize(key_id, vcode)
+    def initialize(key_id=nil, vcode=nil)
       @api = EAAL::API.new(key_id, vcode)
     end
 
+    def characters
+      query('account') { @api.Characters.characters }
+    end
+
     def character_sheet(char_id)
-      @api.scope = 'char'
-      begin
-        @api.CharacterSheet(characterID: char_id)
-      rescue EAAL::Exception::EAALError
-        nil
-      end
+      query('char') { @api.CharacterSheet(characterID: char_id) }
     end
 
-    def characters
-      @api.scope = 'account'
+    def corporation_sheet(corp_id)
+      query('corp') { @api.CorporationSheet(corporationID: corp_id) }
+    end
+
+    private
+    def query(scope)
+      @api.scope = scope
       begin
-        @api.Characters.characters
+        yield
       rescue EAAL::Exception::EAALError
         nil
       end
@@ -31,23 +35,14 @@ module Calefaction::EVE
     cache_key = "calefaction/eve/corp_ticker/#{corp_id}"
     existing = Rails.cache.read(cache_key)
     return existing unless existing.nil?
-    sheet = corporation_sheet(corp_id)
+    sheet = basic_api.corporation_sheet(corp_id)
     return '?' if sheet.nil?
     Rails.cache.write(cache_key, sheet.ticker)
     sheet.ticker
   end
 
   private
-  def corporation_sheet(corp_id)
-    basic_api.scope = 'corp'
-    begin
-      basic_api.CorporationSheet(corporationID: corp_id)
-    rescue EAAL::Exception::EAALError
-      nil
-    end
-  end
-
   def basic_api
-    @@api ||= EAAL::API.new(nil, nil)
+    @@api ||= APIUser.new
   end
 end