Add option to restrict ordering when not enough apples.

lib/apple_bar.rb

@@ -0,0 +1,48 @@
+class AppleBar
+
+  BAR_MAX_WITH = 600
+
+  def initialize(ordergroup)
+    @ordergroup = ordergroup
+    @group_avg = ordergroup.avg_jobs_per_euro.to_f
+    @global_avg = Ordergroup.avg_jobs_per_euro
+  end
+
+  def length_of_global_bar
+    BAR_MAX_WITH / 2.0
+  end
+
+  def length_of_group_bar
+    length = (@group_avg / @global_avg) * length_of_global_bar
+    length > BAR_MAX_WITH ? BAR_MAX_WITH : length
+  end
+
+  # Show group bar in following colors:
+  # Green if higher than 100
+  # Yellow if lower than 100 an higher than stop_ordering_under option value
+  # Red if below stop_ordering_under, the ordergroup isn't allowed to participate in an order anymore
+  def group_bar_color
+    if apples >= 100
+      "#78b74e"
+    else
+      if FoodsoftConfig[:stop_ordering_under].present? and
+          apples >= FoodsoftConfig[:stop_ordering_under]
+        'yellow'
+      else
+        'red'
+      end
+    end
+  end
+
+  def mean_order_amount_per_job
+    (1/@global_avg).round
+  end
+
+  def apples
+    @apples ||= @ordergroup.apples
+  end
+
+  def with_restriction?
+    FoodsoftConfig[:stop_ordering_under].present?
+  end
+end