Merge pull request #6528 from mprieger/5546-cart-page-last-item-deletion

Fix users removing last item of confirmed order on /cart page

app/assets/javascripts/darkswarm/controllers/edit_bought_order_controller.js.coffee

@@ -1,12 +1,20 @@
-Darkswarm.controller "EditBoughtOrderController", ($scope, $resource, Cart) ->
+Darkswarm.controller "EditBoughtOrderController", ($scope, $resource, $timeout, Cart, Messages) ->
   $scope.showBought = false
+  $scope.removeEnabled = true
 
   $scope.deleteLineItem = (id) ->
-    params = {id: id}
-    success = (response) ->
-      $(".line-item-" + id).remove()
-      Cart.removeFinalisedLineItem(id)
-    fail = (error) ->
-      console.log error
+    if Cart.has_one_line_item()
+      Messages.error(t 'orders_cannot_remove_the_final_item')
+      $scope.removeEnabled = false
+      $timeout (->
+        $scope.removeEnabled = true
+      ), 10000
+    else
+      params = {id: id}
+      success = (response) ->
+        $(".line-item-" + id).remove()
+        Cart.removeFinalisedLineItem(id)
+      fail = (error) ->
+        console.log error
 
-    $resource("/line_items/:id").delete(params, success, fail)
+      $resource("/line_items/:id").delete(params, success, fail)

app/assets/javascripts/darkswarm/services/cart.js.coffee

@@ -115,6 +115,9 @@ Darkswarm.factory 'Cart', (CurrentOrder, Variants, $timeout, $http, $modal, $roo
       @line_items = []
       localStorageService.clearAll() # One day this will have to be moar GRANULAR
 
+    has_one_line_item: =>
+      @line_items_finalised.length == 1
+
     removeFinalisedLineItem: (id) =>
       @line_items_finalised = @line_items_finalised.filter (item) ->
         item.id != id