heroku task for env vars

lib/tasks/heroku.thor

@@ -0,0 +1,64 @@
+require 'active_support/core_ext/hash/indifferent_access'
+require 'active_support/core_ext/string/inflections'
+
+module Deploy
+  extend self
+
+  module Support
+    private
+
+    def heroku(command)
+      command "heroku #{command} --app #{heroku_app}"
+    end
+
+    def command(command)
+      puts command
+      system command
+    end
+
+    def environment
+      self.class.to_s.demodulize.underscore
+    end
+
+    def heroku_env
+      @heroku_env ||= Deploy.heroku_config[environment]
+    end
+
+    def heroku_app
+      @heroku_app ||= Deploy.heroku_config[:apps][environment]
+    end
+  end
+
+  def self.commands_for_environment(app_env)
+    module_eval do
+      klass = Class.new(Thor) do
+        include Support
+
+        desc "rack_env", "Set the RACK_ENV config variable"
+        def rack_env
+          heroku("config:add RACK_ENV=#{environment}")
+        end
+
+        desc "config", "Set config variables"
+        def config
+          env_values = [].tap do |e|
+            heroku_env.each do |key, value|
+              e << "#{key.upcase}='#{value}'"
+            end
+          end
+          heroku("config:add #{env_values.join(' ')}")
+        end
+      end
+
+      const_set(app_env.classify, klass)
+    end
+  end
+
+  def heroku_config
+    @heroku_config ||= YAML.load_file(File.expand_path('../../../config/heroku.yml', __FILE__)).with_indifferent_access
+  end
+
+  heroku_config[:apps].each_key do |app_env|
+    commands_for_environment(app_env)
+  end
+end