Confirm change hub when it would empty cart

app/assets/javascripts/store/shop_front.js.coffee

@@ -1,5 +1,4 @@
 $(document).ready ->
   $("#order_order_cycle_id").change -> $("#order_cycle_select").submit()
-  $("#reset_order_cycle").click -> return false unless confirm "Performing this action will clear your cart."
-
-
+  $("#reset_order_cycle").click -> return false unless confirm "Changing your collection date will clear your cart."
+  $(".shop-distributor.empties-cart").click -> return false unless confirm "Changing your location will clear your cart."

app/controllers/home_controller.rb

@@ -1,4 +1,4 @@
-class HomeController < ApplicationController
+class HomeController < BaseController
   layout 'landing_page'
 
   def new_landing_page

app/helpers/temp_landing_page_helper.rb

@@ -0,0 +1,9 @@
+module TempLandingPageHelper
+  def temp_landing_page_distributor_link_class(distributor)
+    cart = current_order(true)
+
+    klass = "shop-distributor"
+    klass += " empties-cart" unless cart.line_items.empty? || cart.distributor == distributor
+    klass
+  end
+end

app/views/home/temp_landing_page.html.haml

@@ -8,6 +8,7 @@
     = favicon_link_tag "favicon.ico"
     = stylesheet_link_tag "search/all"
     = javascript_include_tag "search/all"
+    = javascript_include_tag "store/shop_front"
     = render "layouts/bugherd_script"
 
     = csrf_meta_tags
@@ -37,7 +38,7 @@
             .row.distributor-link-row
               .large-12.columns
                 = succeed ',' do
-                  = link_to "<strong>#{distributor.name}</strong>".html_safe, shop_enterprise_path(distributor)
+                  = link_to "<strong>#{distributor.name}</strong>".html_safe, shop_enterprise_path(distributor), {class: temp_landing_page_distributor_link_class(distributor)}
 
                 %span.secondary= distributor.city
     %footer

spec/helpers/temp_landing_page_helper_spec.rb

@@ -0,0 +1,31 @@
+require 'spec_helper'
+
+describe HtmlHelper do
+  subject do
+    obj = Object.new
+    obj.extend TempLandingPageHelper
+  end
+
+  it "does not require emptying the cart when it is empty" do
+    d = double(:distributor)
+    order = double(:order, line_items: [])
+    subject.stub(:current_order) { order }
+    subject.temp_landing_page_distributor_link_class(d).should_not =~ /empties-cart/
+  end
+
+  it "does not require emptying the cart when we are on the same distributor" do
+    d = double(:distributor)
+    order = double(:order, line_items: [double(:line_item)], distributor: d)
+    subject.stub(:current_order) { order }
+    subject.temp_landing_page_distributor_link_class(d).should_not =~ /empties-cart/
+  end
+
+  it "requires emptying the cart otherwise" do
+    d1 = double(:distributor)
+    d2 = double(:distributor)
+    order = double(:order, line_items: [double(:line_item)], distributor: d2)
+    subject.stub(:current_order) { order }
+    subject.temp_landing_page_distributor_link_class(d1).should =~ /empties-cart/
+  end
+
+end