diff --git a/app/controllers/my_profile/manage_products_controller.rb b/app/controllers/my_profile/manage_products_controller.rb
index 1523893..abc644c 100644
--- a/app/controllers/my_profile/manage_products_controller.rb
+++ b/app/controllers/my_profile/manage_products_controller.rb
@@ -103,6 +103,26 @@ class ManageProductsController < ApplicationController
     end
   end
 
+  def manage_product_details
+    @product = @profile.products.find(params[:id])
+    if request.post?
+      @product.update_price_details(params[:price_details]) if params[:price_details]
+      render :partial => 'display_price_details'
+    else
+      render :partial => 'manage_product_details'
+    end
+  end
+
+  def remove_price_detail
+    @product = @profile.products.find(params[:product])
+    @price_detail = @product.price_details.find(params[:id])
+    @product = @price_detail.product
+    if request.post?
+      @price_detail.destroy
+      render :nothing => true
+    end
+  end
+
   def destroy
     @product = @profile.products.find(params[:id])
     if @product.destroy
@@ -159,4 +179,18 @@ class ManageProductsController < ApplicationController
     end
   end
 
+  def create_production_cost
+    cost = @profile.production_costs.create(:name => params[:id])
+    if cost.valid?
+      cost.save
+      render :text => {:name => cost.name,
+                       :id => cost.id,
+                       :ok => true
+                      }.to_json
+    else
+      render :text => {:ok => false,
+                       :error_msg => _(cost.errors['name']) % {:fn => _('Name')}
+                      }.to_json
+    end
+  end
 end
diff --git a/app/helpers/manage_products_helper.rb b/app/helpers/manage_products_helper.rb
index f9dce9d..cf9b84a 100644
--- a/app/helpers/manage_products_helper.rb
+++ b/app/helpers/manage_products_helper.rb
@@ -271,4 +271,15 @@ module ManageProductsHelper
     return input_amount_used if input.unit.blank?
     n_('1 %{singular_unit}', '%{num} %{plural_unit}', input.amount_used.to_f) % { :num => input_amount_used, :singular_unit => content_tag('span', input.unit.singular, :class => 'input-unit'), :plural_unit => content_tag('span', input.unit.plural, :class => 'input-unit') }
   end
+
+  def select_production_cost(product,selected=nil)
+    url = url_for( :controller => 'manage_products', :action => 'create_production_cost' )
+    prompt_msg = _('Insert the name of the new cost:')
+    error_msg = _('Something went wrong. Please, try again')
+    select_tag('price_details[][production_cost_id]',
+               options_for_select(product.available_production_costs.map {|item| [truncate(item.name, 10, '...'), item.id]} + [[_('Other cost'), '']], selected),
+               {:include_blank => _('Select the cost'),
+                :class => 'production-cost-selection',
+                :onchange => "productionCostTypeChange(this, '#{url}', '#{prompt_msg}', '#{error_msg}')"})
+  end
 end
diff --git a/app/models/enterprise.rb b/app/models/enterprise.rb
index 87d9886..88956db 100644
--- a/app/models/enterprise.rb
+++ b/app/models/enterprise.rb
@@ -6,6 +6,7 @@ class Enterprise < Organization
 
   has_many :products, :dependent => :destroy, :order => 'name ASC'
   has_many :inputs, :through => :products
+  has_many :production_costs, :as => :owner
 
   extra_data_for_index :product_categories
 
@@ -164,5 +165,4 @@ class Enterprise < Organization
   def enable_contact?
     enable_contact_us
   end
-
 end
diff --git a/app/models/environment.rb b/app/models/environment.rb
index fe324fa..14fc713 100644
--- a/app/models/environment.rb
+++ b/app/models/environment.rb
@@ -162,6 +162,7 @@ class Environment < ActiveRecord::Base
   acts_as_accessible
 
   has_many :units, :order => 'position'
+  has_many :production_costs, :as => :owner
 
   def superior_intances
     [self, nil]
diff --git a/app/models/input.rb b/app/models/input.rb
index 41ff330..3d63ccc 100644
--- a/app/models/input.rb
+++ b/app/models/input.rb
@@ -47,4 +47,9 @@ class Input < ActiveRecord::Base
     end
     return false
   end
+
+  def cost
+    return 0 if self.amount_used.blank? || self.price_per_unit.blank?
+    self.amount_used * self.price_per_unit
+  end
 end
diff --git a/app/models/price_detail.rb b/app/models/price_detail.rb
new file mode 100644
index 0000000..3cde3de
--- /dev/null
+++ b/app/models/price_detail.rb
@@ -0,0 +1,27 @@
+class PriceDetail < ActiveRecord::Base
+
+  belongs_to :product
+  validates_presence_of :product_id
+
+  belongs_to :production_cost
+  validates_presence_of :production_cost_id
+  validates_uniqueness_of :production_cost_id, :scope => :product_id
+
+  def price
+    self[:price] || 0
+  end
+
+  include FloatHelper
+  def price=(value)
+    if value.is_a?(String)
+      super(decimal_to_float(value))
+    else
+      super(value)
+    end
+  end
+
+  def formatted_value(value)
+    ("%.2f" % self[value]).to_s.gsub('.', product.enterprise.environment.currency_separator) if self[value]
+  end
+
+end
diff --git a/app/models/product.rb b/app/models/product.rb
index a4101c0..a67cc52 100644
--- a/app/models/product.rb
+++ b/app/models/product.rb
@@ -5,6 +5,8 @@ class Product < ActiveRecord::Base
   has_many :product_qualifiers
   has_many :qualifiers, :through => :product_qualifiers
   has_many :inputs, :dependent => :destroy, :order => 'position'
+  has_many :price_details, :dependent => :destroy
+  has_many :production_costs, :through => :price_details
 
   validates_uniqueness_of :name, :scope => :enterprise_id, :allow_nil => true
   validates_presence_of :product_category_id
@@ -101,8 +103,9 @@ class Product < ActiveRecord::Base
     enterprise.public_profile
   end
 
-  def formatted_value(value)
-    ("%.2f" % self[value]).to_s.gsub('.', enterprise.environment.currency_separator) if self[value]
+  def formatted_value(method)
+    value = self[method] || self.send(method)
+    ("%.2f" % value).to_s.gsub('.', enterprise.environment.currency_separator) if value
   end
 
   def price_with_discount
@@ -149,4 +152,30 @@ class Product < ActiveRecord::Base
     unit.blank? ? name : "#{name} - #{unit.name.downcase}"
   end
 
+  def inputs_cost
+    return 0 if inputs.empty?
+    inputs.map(&:cost).inject { |sum,price| sum + price }
+  end
+
+  def total_production_cost
+    return inputs_cost if price_details.empty?
+    inputs_cost + price_details.map(&:price).inject { |sum,price| sum + price }
+  end
+
+  def price_described?
+    return false if price.nil?
+    (price - total_production_cost).zero?
+  end
+
+  def update_price_details(price_details)
+    self.price_details.destroy_all
+    price_details.each do |price_detail|
+      self.price_details.create(price_detail)
+    end
+  end
+
+  def available_production_costs
+    self.enterprise.environment.production_costs + self.enterprise.production_costs
+  end
+
 end
diff --git a/app/models/production_cost.rb b/app/models/production_cost.rb
new file mode 100644
index 0000000..f1e0025
--- /dev/null
+++ b/app/models/production_cost.rb
@@ -0,0 +1,8 @@
+class ProductionCost < ActiveRecord::Base
+
+  belongs_to :owner, :polymorphic => true
+  validates_presence_of :owner
+  validates_presence_of :name
+  validates_length_of :name, :maximum => 30, :allow_blank => true
+  validates_uniqueness_of :name, :scope => [:owner_id, :owner_type]
+end
diff --git a/app/views/layouts/_javascript.rhtml b/app/views/layouts/_javascript.rhtml
index 086a9c8..96c00a6 100644
--- a/app/views/layouts/_javascript.rhtml
+++ b/app/views/layouts/_javascript.rhtml
@@ -1 +1 @@
-<%= javascript_include_tag :defaults, 'jquery-latest.js', 'jquery.noconflict.js', 'jquery.cycle.all.min.js', 'thickbox.js', 'lightbox', 'jquery-ui-1.8.2.custom.min', 'jquery.scrollTo', 'jquery.form.js', 'jquery.cookie', 'reflection', 'add-and-join', :cache => 'cache-general' %>
+<%= javascript_include_tag :defaults, 'jquery-latest.js', 'jquery.noconflict.js', 'jquery.cycle.all.min.js', 'thickbox.js', 'lightbox', 'jquery-ui-1.8.2.custom.min', 'jquery.scrollTo', 'jquery.form.js', 'jquery.cookie', 'reflection', 'add-and-join', 'manage-products', :cache => 'cache-general' %>
diff --git a/app/views/layouts/application.rhtml b/app/views/layouts/application.rhtml
index 67c28f4..5159ac0 100644
--- a/app/views/layouts/application.rhtml
+++ b/app/views/layouts/application.rhtml
@@ -27,11 +27,8 @@
     <%# Add custom tags/styles/etc via content_for %>
     <%= yield :head %>
     <%= javascript_tag('render_all_jquery_ui_widgets()') %>
-    <script type="text/javascript">
-       jQuery(".numbers-only").keypress(function(event) {
-          return numbersonly(event, '<%= environment.currency_separator %>')
-       });
-    </script>
+
+    <%= render :partial => 'shared/numbers_only_javascript' %>
   </head>
 
   <body class='noosfero category<%= category_color %><%=
diff --git a/app/views/manage_products/_display_price_details.rhtml b/app/views/manage_products/_display_price_details.rhtml
new file mode 100644
index 0000000..68d6dd1
--- /dev/null
+++ b/app/views/manage_products/_display_price_details.rhtml
@@ -0,0 +1,19 @@
+<div id='display-manage-price-details'></div>
+
+<% if @product.price_described? %>
+  <div id='display-price-details'>
+  <div id='price-details-title'><%= _('Price composition') %></div>
+    <ul class='price-details-list'>
+      <li>
+        <div class='price-detail-name'><%= _('Inputs:') %></div>
+        <div class='price-detail-price'><%= float_to_currency(@product.inputs_cost) %></div>
+      </li>
+      <% @product.price_details.each do |price_detail| %>
+        <li>
+          <div class='price-detail-name'><%= "%s:" % price_detail.production_cost.name %></div>
+          <div class='price-detail-price'><%= float_to_currency(price_detail.price) %></div>
+        </li>
+      <% end %>
+    </ul>
+  </div>
+<% end %>
diff --git a/app/views/manage_products/_edit_info.rhtml b/app/views/manage_products/_edit_info.rhtml
index ef4e5d7..8017fe8 100644
--- a/app/views/manage_products/_edit_info.rhtml
+++ b/app/views/manage_products/_edit_info.rhtml
@@ -55,9 +55,4 @@
   <% end %>
 <% end %>
 
-<% javascript_tag do %>
-  jQuery(".numbers-only").keypress(function(event) {
-    var separator = "<%= environment.currency_separator %>"
-    return numbersonly(event, separator)
-  });
-<% end %>
+<%= render :partial => 'shared/numbers_only_javascript' %>
diff --git a/app/views/manage_products/_edit_price_details.rhtml b/app/views/manage_products/_edit_price_details.rhtml
new file mode 100644
index 0000000..0efe94d
--- /dev/null
+++ b/app/views/manage_products/_edit_price_details.rhtml
@@ -0,0 +1,13 @@
+<% price_details.each do |price_detail| %>
+  <tr id='<%= "price-detail-#{price_detail.id}" %>'>
+    <td><%= select_production_cost(@product, price_detail.production_cost_id) %></td>
+    <td><%= labelled_form_field(environment.currency_unit, text_field_tag('price_details[][price]', price_detail.formatted_value(:price), :class => 'price-details-price numbers-only')) %></td>
+    <td>
+      <%= button_to_remote(:remove, _('Remove'),
+                           :update => "price-detail-#{price_detail.id}",
+                           :confirm => _('Are you sure that you want to remove this cost?'),
+                           :url => { :action => 'remove_price_detail', :id => price_detail, :product => @product }) %>
+  </tr>
+<% end %>
+
+<%= render :partial => 'shared/numbers_only_javascript' %>
diff --git a/app/views/manage_products/_manage_product_details.rhtml b/app/views/manage_products/_manage_product_details.rhtml
new file mode 100644
index 0000000..72ec595
--- /dev/null
+++ b/app/views/manage_products/_manage_product_details.rhtml
@@ -0,0 +1,53 @@
+<%= button(:add, _('New cost'), '#', :id => 'add-new-cost') %>
+
+<% javascript_tag do %>
+  jQuery(function($) {
+    $('#progressbar').progressbar({
+    value: <%= @product.total_production_cost %>
+    });
+    if (<%= @product.price_described? %>) {
+      $('#progressbar-icon').addClass('ui-icon-check');
+      $('#progressbar-icon').attr('title', $('#price-described-message').html());
+      $('div.ui-progressbar-value').addClass('price-described');
+    }
+  });
+<% end %>
+
+<div id="price-details-info">
+  <div id="details-progressbar">
+    <div id='progressbar'></div>
+    <div id='progressbar-text'><%= "%{currency}%{product_price}" % {:currency => environment.currency_unit, :production_cost_value => @product.total_production_cost, :product_price => @product.formatted_value(:price)} %></div>
+  </div>
+  <div id='progressbar-icon' class='ui-icon ui-icon-info' title='<%= _("The production cost of your product is not described yet. If you want to display the price composition, please add all the costs") %>'></div>
+  <div id='price-described-message' style='display:none'><%= _("The production cost of your product is fully described and will be displayed on your product's page") %></div>
+</div>
+
+<% form_tag({:action => 'manage_product_details'}, :method => 'post', :id => 'manage-product-details-form') do %>
+  <div>
+    <table id='display-product-price-details'>
+      <tr>
+        <td><%= _('Inputs') %></td>
+        <td colspan='2' class='inputs-cost'><%= float_to_currency(@product.inputs_cost) %></td>
+      </tr>
+      <%= render :partial => 'edit_price_details', :locals => {:price_details => @product.price_details} %>
+    </table>
+  </div>
+
+  <% button_bar do %>
+    <%= submit_button :save, _('Save') %>
+    <%= button(:cancel, _('Cancel'), '#', :class => 'cancel-price-details') %>
+    <span class='loading-area'></span>
+  <% end %>
+
+<% end %>
+
+<div style='display:none'>
+  <table id='new-cost-fields'>
+    <tr>
+      <td><%= select_production_cost(@product) %></td>
+      <td><%= labelled_form_field(environment.currency_unit, text_field_tag('price_details[][price]', nil, :class => 'price-details-price')) %></td>
+      <td><%= link_to(_('Cancel'), '#', {:class => 'cancel-new-cost'}) %></td>
+    </tr>
+  </table>
+</div>
+
diff --git a/app/views/manage_products/_price_details_button.rhtml b/app/views/manage_products/_price_details_button.rhtml
new file mode 100644
index 0000000..8ee8eaf
--- /dev/null
+++ b/app/views/manage_products/_price_details_button.rhtml
@@ -0,0 +1,10 @@
+<%= edit_ui_button(
+  _('Describe here the cost of production'),
+  {:action => 'manage_product_details', :id => @product.id},
+  :id => 'manage-product-details-button',
+  'data-primary-icon' => 'ui-icon-pencil',
+  'data-secondary-icon' => 'ui-icon-triangle-1-s',
+  :title => _('Describe details about how the price was defined')
+) %>
+<%= javascript_tag("render_jquery_ui_buttons('manage-product-details-button')") %>
+<span class='loading-area'></span>
diff --git a/app/views/manage_products/show.rhtml b/app/views/manage_products/show.rhtml
index 3f3b349..b6ed16c 100644
--- a/app/views/manage_products/show.rhtml
+++ b/app/views/manage_products/show.rhtml
@@ -38,6 +38,11 @@
     </div>
   <% end %>
 
+  <div id='product-price-details'>
+    <%= render :partial => 'manage_products/display_price_details' %>
+    <%= render :partial => 'manage_products/price_details_button' %>
+  </div>
+
 </div>
 
 <% button_bar do %>
diff --git a/app/views/shared/_numbers_only_javascript.rhtml b/app/views/shared/_numbers_only_javascript.rhtml
new file mode 100644
index 0000000..6d77641
--- /dev/null
+++ b/app/views/shared/_numbers_only_javascript.rhtml
@@ -0,0 +1,6 @@
+<% javascript_tag do %>
+  jQuery(".numbers-only").keypress(function(event) {
+    var separator = "<%= environment.currency_separator %>"
+    return numbersonly(event, separator)
+  });
+<% end %>
diff --git a/db/migrate/20110403184315_create_production_cost.rb b/db/migrate/20110403184315_create_production_cost.rb
new file mode 100644
index 0000000..027d3a4
--- /dev/null
+++ b/db/migrate/20110403184315_create_production_cost.rb
@@ -0,0 +1,13 @@
+class CreateProductionCost < ActiveRecord::Migration
+  def self.up
+    create_table :production_costs do |t|
+      t.string :name
+      t.references :owner, :polymorphic => true
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :production_costs
+  end
+end
diff --git a/db/migrate/20110403193953_create_price_details.rb b/db/migrate/20110403193953_create_price_details.rb
new file mode 100644
index 0000000..41e55d2
--- /dev/null
+++ b/db/migrate/20110403193953_create_price_details.rb
@@ -0,0 +1,14 @@
+class CreatePriceDetails < ActiveRecord::Migration
+  def self.up
+    create_table :price_details do |t|
+      t.decimal :price, :default => 0
+      t.references :product
+      t.references :production_cost
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :price_details
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 3ee7061..af29ccc 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20110316171323) do
+ActiveRecord::Schema.define(:version => 20110403193953) do
 
   create_table "action_tracker", :force => true do |t|
     t.integer  "user_id"
@@ -315,6 +315,14 @@ ActiveRecord::Schema.define(:version => 20110316171323) do
     t.datetime "updated_at"
   end
 
+  create_table "price_details", :force => true do |t|
+    t.decimal  "price",              :default => 0.0
+    t.integer  "product_id"
+    t.integer  "production_cost_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "product_categorizations", :force => true do |t|
     t.integer  "category_id"
     t.integer  "product_id"
@@ -334,6 +342,14 @@ ActiveRecord::Schema.define(:version => 20110316171323) do
     t.datetime "updated_at"
   end
 
+  create_table "production_costs", :force => true do |t|
+    t.string   "name"
+    t.integer  "owner_id"
+    t.string   "owner_type"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "products", :force => true do |t|
     t.integer  "enterprise_id"
     t.integer  "product_category_id"
diff --git a/features/manage_product_price_details.feature b/features/manage_product_price_details.feature
new file mode 100644
index 0000000..a08abf8
--- /dev/null
+++ b/features/manage_product_price_details.feature
@@ -0,0 +1,148 @@
+
+Feature: manage product price details
+  As an enterprise owner
+  I want to manage the details of product's price
+
+  Background:
+    Given the following users
+      | login | name |
+      | joaosilva | Joao Silva |
+    And the following enterprises
+      | identifier | owner | name | enabled |
+      | redemoinho | joaosilva | Rede Moinho | true |
+    Given the following product_category
+      | name  |
+      | Music |
+    And the following product_categories
+      | name | parent  |
+      | Rock | music   |
+      | CD Player | music   |
+    And the following product
+      | owner      | category | name       | price |
+      | redemoinho | rock     | Abbey Road | 80.0  |
+    And feature "disable_products_for_enterprises" is disabled on environment
+    And the following inputs
+      | product    | category  | price_per_unit | amount_used |
+      | Abbey Road | Rock      | 10.0           | 2           |
+      | Abbey Road | CD Player | 20.0           | 2           |
+    And the following production cost
+      | name  | owner       |
+      | Taxes | environment |
+
+  @selenium
+  Scenario: list total value of inputs as price details
+    Given I am logged in as "joaosilva"
+    When I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    Then I should see "Inputs"
+    And I should see "60.0" within ".inputs-cost"
+
+  @selenium
+  Scenario: cancel management of price details
+    Given I am logged in as "joaosilva"
+    When I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    When I follow "Cancel"
+    Then I should see "Describe here the cost of production"
+
+  @selenium
+  Scenario: return to product after save
+    Given I am logged in as "joaosilva"
+    When I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I press "Save"
+    Then I should be on Rede Moinho's page of product Abbey Road
+
+  @selenium
+  Scenario: add first item on price details
+    Given I am logged in as "joaosilva"
+    When I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I follow "New cost"
+    And I select "Taxes"
+    And I fill in "$" with "5.00"
+    And I press "Save"
+    Then I should not see "Save"
+    And I should see "Describe here the cost of production"
+
+  @selenium
+  Scenario: edit a production cost
+    Given the following production cost
+      | name  | owner       |
+      | Energy | environment |
+    Given I am logged in as "joaosilva"
+    When I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I follow "New cost"
+    And I select "Taxes"
+    And I fill in "$" with "20.00"
+    And I press "Save"
+    Then I should not see "Save"
+    And I should see "Taxes" within "#display-price-details"
+    When I follow "Describe here the cost of production"
+    And I select "Energy"
+    And I press "Save"
+    And I should not see "Taxes" within "#display-price-details"
+    And I should see "Energy" within "#display-price-details"
+
+  Scenario: not display product detail button if product does not have input
+    Given the following product
+      | owner      | category | name             |
+      | redemoinho | rock     | Yellow Submarine |
+    And the following user
+      | login      | name        |
+      | mariasouza | Maria Souza |
+    And I am logged in as "mariasouza"
+    When I go to Rede Moinho's page of product Yellow Submarine
+    Then I should not see "Describe here the cost of production"
+
+  Scenario: not display price details if price is not fully described
+    Given I go to Rede Moinho's page of product Abbey Road
+    Then I should not see "60.0"
+
+   @selenium
+   Scenario: display price details if price is fully described
+     Given I am logged in as "joaosilva"
+     And I go to Rede Moinho's page of product Abbey Road
+     And I follow "Describe here the cost of production"
+     And I follow "New cost"
+     And I select "Taxes"
+     And I fill in "$" with "20.00"
+     And I press "Save"
+     Then I should see "Inputs" within ".price-detail-name"
+     And I should see "60.0" within ".price-detail-price"
+
+  @selenium
+  Scenario: create a new cost clicking on select
+    Given I am logged in as "joaosilva"
+    And I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I want to add "Energy" as cost
+    And I select "Other cost"
+    And I press "Save"
+    When I follow "Describe here the cost of production"
+    Then I should see "Energy" within ".production-cost-selection"
+
+  @selenium
+  Scenario: add created cost on new-cost-fields
+    Given I am logged in as "joaosilva"
+    And I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I want to add "Energy" as cost
+    And I select "Other cost"
+    Then I should see "Energy" within "#new-cost-fields"
+
+  @selenium
+  Scenario: remove price detail
+    Given the following price detail
+      | product    | production_cost | price |
+      | Abbey Road | Taxes           | 20.0  |
+    And I am logged in as "joaosilva"
+    And I go to Rede Moinho's page of product Abbey Road
+    And I follow "Describe here the cost of production"
+    And I should see "Taxes" within "#manage-product-details-form"
+    When I follow "Remove" within "#manage-product-details-form"
+    And I confirm
+    And I press "Save"
+    And I follow "Describe here the cost of production"
+    Then I should not see "Taxes" within "#manage-product-details-form"
diff --git a/features/step_definitions/noosfero_steps.rb b/features/step_definitions/noosfero_steps.rb
index 93f2ade..282baf4 100644
--- a/features/step_definitions/noosfero_steps.rb
+++ b/features/step_definitions/noosfero_steps.rb
@@ -175,6 +175,22 @@ Given /^the following certifiers$/ do |table|
   end
 end
 
+Given /^the following production costs?$/ do |table|
+  table.hashes.map{|item| item.dup}.each do |item|
+    owner_type = item.delete('owner')
+    owner = owner_type == 'environment' ? Environment.default : Profile[owner_type]
+    ProductionCost.create!(item.merge(:owner => owner))
+  end
+end
+
+Given /^the following price details?$/ do |table|
+  table.hashes.map{|item| item.dup}.each do |item|
+    product = Product.find_by_name item.delete('product')
+    production_cost = ProductionCost.find_by_name item.delete('production_cost')
+    product.price_details.create!(item.merge(:production_cost => production_cost))
+  end
+end
+
 Given /^I am logged in as "(.+)"$/ do |username|
   visit('/account/logout')
   visit('/account/login')
@@ -392,3 +408,6 @@ Given /^"([^\"]*)" asked to join "([^\"]*)"$/ do |person, organization|
   AddMember.create!(:person => person, :organization => organization)
 end
 
+And /^I want to add "([^\"]*)" as cost$/ do |string|
+  selenium.answer_on_next_prompt(string)
+end
diff --git a/public/javascripts/manage-products.js b/public/javascripts/manage-products.js
new file mode 100644
index 0000000..069e908
--- /dev/null
+++ b/public/javascripts/manage-products.js
@@ -0,0 +1,66 @@
+(function($) {
+
+  $("#manage-product-details-button").live('click', function() {
+    $("#product-price-details").find('.loading-area').addClass('small-loading');
+    url = $(this).attr('href');
+    $.get(url, function(data){
+      $("#manage-product-details-button").hide();
+      $("#display-price-details").hide();
+      $("#display-manage-price-details").html(data);
+      $("#product-price-details").find('.loading-area').removeClass('small-loading');
+    });
+    return false;
+  });
+
+  $(".cancel-price-details").live('click', function() {
+    $("#manage-product-details-button").show();
+    $("#display-price-details").show();
+    $("#display-manage-price-details").html('');
+    return false;
+  });
+
+  $("#manage-product-details-form").live('submit', function(data) {
+     var form = this;
+     $(form).find('.loading-area').addClass('small-loading');
+     $(form).css('cursor', 'progress');
+     $.post(form.action, $(form).serialize(), function(data) {
+       $("#display-manage-price-details").html(data);
+       $("#manage-product-details-button").show();
+     });
+     return false;
+  });
+
+  $("#add-new-cost").live('click', function() {
+    $('#display-product-price-details tbody').append($('#new-cost-fields tbody').html());
+    return false;
+  });
+
+  $(".cancel-new-cost").live('click', function() {
+    $(this).parents('tr').remove();
+    return false;
+  });
+
+})(jQuery);
+
+function productionCostTypeChange(select, url, question, error_msg) {
+  if (select.value == '') {
+    var newType = prompt(question);
+    jQuery.ajax({
+      url: url + "/" + newType,
+      dataType: 'json',
+      success: function(data, status, ajax){
+        if (data.ok) {
+          var opt = jQuery('<option value="' + data.id + '">' + newType + '</option>');
+          opt.insertBefore(jQuery("option:last", select));
+          select.selectedIndex = select.options.length - 2;
+          opt.clone().insertBefore('#new-cost-fields .production-cost-selection option:last');
+        } else {
+          alert(data.error_msg);
+        }
+      },
+      error: function(ajax, status, error){
+        alert(error_msg);
+      }
+    });
+  }
+}
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 719c5c4..12fdc0b 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -3216,6 +3216,85 @@ div#activation_enterprise div {
   font-weight: bold;
 }
 
+/* * * * * * Price details  * * * * * */
+
+#product-price-details {
+  border: 1px solid #AAA;
+  margin-top: 20px;
+  padding: 15px 20px;
+}
+
+#display-price-details .price-details-list {
+  padding-left: 0px;
+}
+
+#display-price-details .price-details-list li {
+  list-style: none;
+}
+
+#display-price-details .price-details-list li .price-detail-name {
+  width: 200px;
+}
+
+#display-price-details .price-details-list li .price-detail-name,
+#display-price-details .price-details-list li .price-detail-price {
+  display: inline-block;
+}
+
+#manage-product-details-form .formlabel,
+#manage-product-details-form .formfield {
+  display: inline-block;
+}
+
+/* * * Progress bar on price details edition * * */
+
+#display-manage-price-details .ui-widget-content {
+  border: 1px solid #DDD;
+}
+
+#display-manage-price-details .ui-progressbar {
+  height: 20px;
+}
+
+#display-manage-price-details .ui-progressbar .ui-progressbar-value {
+  margin: 0px;
+  background-color: #A40000;
+}
+
+#display-manage-price-details .ui-progressbar .ui-progressbar-value.price-described {
+  background-color: #4E9A06;
+}
+
+#display-manage-price-details #price-details-info {
+  margin: 10px 0px;
+}
+
+#display-manage-price-details #details-progressbar {
+  position: relative;
+  width: 410px;
+  display: inline-block;
+}
+
+#display-manage-price-details #progressbar-text {
+  position: absolute;
+  top: 5px;
+  right: 7px;
+  font-size: 11px;
+}
+
+#display-manage-price-details #progressbar-icon {
+  display: inline-block;
+  cursor: pointer;
+}
+
+#display-manage-price-details #details-progressbar .ui-corner-left,
+#display-manage-price-details #details-progressbar .ui-corner-right {
+  -moz-border-radius-bottomleft: 0px;
+  -moz-border-radius-bottomright: 0px;
+  -moz-border-radius-topleft: 0px;
+  -moz-border-radius-topright: 0px;
+}
+
 /* ==> public/stylesheets/controller_cms.css <== */
 
 
diff --git a/test/factories.rb b/test/factories.rb
index d1b10c2..1b51d08 100644
--- a/test/factories.rb
+++ b/test/factories.rb
@@ -448,4 +448,12 @@ module Noosfero::Factory
     { :singular => 'Litre', :plural => 'Litres', :environment_id => 1 }
   end
 
+  ###############################################
+  # Production Cost
+  ###############################################
+
+  def defaults_for_production_cost
+    { :name => 'Production cost ' + factory_num_seq.to_s }
+  end
+
 end
diff --git a/test/functional/manage_products_controller_test.rb b/test/functional/manage_products_controller_test.rb
index 1c86446..1409938 100644
--- a/test/functional/manage_products_controller_test.rb
+++ b/test/functional/manage_products_controller_test.rb
@@ -421,4 +421,47 @@ class ManageProductsControllerTest < Test::Unit::TestCase
     assert_tag :tag => 'div', :attributes => { :id => "product-#{product.id}-tabs" }, :descendant => {:tag => 'a', :attributes => {:href => '#product-inputs'}, :content => 'Inputs and raw material'}
   end
 
+  should 'remove price detail of a product' do
+    product = fast_create(Product, :enterprise_id => @enterprise.id, :product_category_id => @product_category.id)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    detail = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+
+    assert_equal [detail], product.price_details
+
+    post :remove_price_detail, :id => detail.id, :product => product, :profile => @enterprise.identifier
+    product.reload
+    assert_equal [], product.price_details
+  end
+
+  should 'create a production cost for enterprise' do
+    get :create_production_cost, :profile => @enterprise.identifier, :id => 'Taxes'
+
+    assert_equal ['Taxes'], Enterprise.find(@enterprise.id).production_costs.map(&:name)
+    resp = ActiveSupport::JSON.decode(@response.body)
+    assert_equal 'Taxes', resp['name']
+    assert resp['id'].kind_of?(Integer)
+    assert resp['ok']
+    assert_nil resp['error_msg']
+  end
+
+  should 'display error if production cost has no name' do
+    get :create_production_cost, :profile => @enterprise.identifier
+
+    resp = ActiveSupport::JSON.decode(@response.body)
+    assert_nil resp['name']
+    assert_nil resp['id']
+    assert !resp['ok']
+    assert_match /blank/, resp['error_msg']
+  end
+
+  should 'display error if name of production cost is too long' do
+    get :create_production_cost, :profile => @enterprise.identifier, :id => 'a'*60
+
+    resp = ActiveSupport::JSON.decode(@response.body)
+    assert_nil resp['name']
+    assert_nil resp['id']
+    assert !resp['ok']
+    assert_match /too long/, resp['error_msg']
+  end
+
 end
diff --git a/test/unit/enterprise_test.rb b/test/unit/enterprise_test.rb
index 9d205fa..1982f2e 100644
--- a/test/unit/enterprise_test.rb
+++ b/test/unit/enterprise_test.rb
@@ -423,4 +423,8 @@ class EnterpriseTest < Test::Unit::TestCase
     assert_equal false, enterprise.receives_scrap_notification?
   end
 
+  should 'have production cost' do
+    e = fast_create(Enterprise)
+    assert_respond_to e, :production_costs
+  end
 end
diff --git a/test/unit/environment_test.rb b/test/unit/environment_test.rb
index f5982d2..83f1d96 100644
--- a/test/unit/environment_test.rb
+++ b/test/unit/environment_test.rb
@@ -1116,4 +1116,7 @@ class EnvironmentTest < Test::Unit::TestCase
     assert_equal ["Meter", "Kilo", "Litre"], Environment.default.units.map(&:singular)
   end
 
+  should 'have production costs' do
+    assert_respond_to Environment.default, :production_costs
+  end
 end
diff --git a/test/unit/input_test.rb b/test/unit/input_test.rb
index 6f9ed41..300e401 100644
--- a/test/unit/input_test.rb
+++ b/test/unit/input_test.rb
@@ -162,4 +162,19 @@ class InputTest < Test::Unit::TestCase
     assert_kind_of Unit, input.build_unit
   end
 
+  should 'calculate cost of input' do
+    input = Input.new(:amount_used => 10, :price_per_unit => 2.00)
+    assert_equal 20.00, input.cost
+  end
+
+  should 'cost 0 if amount not defined' do
+    input = Input.new(:price_per_unit => 2.00)
+    assert_equal 0.00, input.cost
+  end
+
+  should 'cost 0 if price_per_unit is not defined' do
+    input = Input.new(:amount_used => 10)
+    assert_equal 0.00, input.cost
+  end
+
 end
diff --git a/test/unit/price_detail_test.rb b/test/unit/price_detail_test.rb
new file mode 100644
index 0000000..bd70658
--- /dev/null
+++ b/test/unit/price_detail_test.rb
@@ -0,0 +1,81 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class PriceDetailTest < ActiveSupport::TestCase
+
+  should 'have price 0 by default' do
+    p = PriceDetail.new
+
+    assert p.price.zero?
+  end
+
+  should 'return zero on price if it is blank' do
+    p = PriceDetail.new(:price => '')
+
+    assert p.price.zero?
+  end
+
+  should 'accept price in american\'s or brazilian\'s currency format' do
+    [
+      [12.34, 12.34],
+      ["12.34", 12.34],
+      ["12,34", 12.34],
+      ["12.345.678,90", 12345678.90],
+      ["12,345,678.90", 12345678.90],
+      ["12.345.678", 12345678.00],
+      ["12,345,678", 12345678.00]
+    ].each do |input, output|
+      new_price_detail = PriceDetail.new(:price => input)
+      assert_equal output, new_price_detail.price
+    end
+  end
+
+  should 'belongs to a product' do
+    p = PriceDetail.new
+
+    assert_respond_to p, :product
+  end
+
+  should 'product be mandatory' do
+    p = PriceDetail.new
+    p.valid?
+
+    assert p.errors.invalid?(:product_id)
+  end
+
+  should 'have production cost' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    detail = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+
+    assert_equal cost, PriceDetail.find(detail.id).production_cost
+  end
+
+  should 'production cost be mandatory' do
+    p = PriceDetail.new
+    p.valid?
+
+    assert p.errors.invalid?(:production_cost_id)
+  end
+
+  should 'th production cost be unique on scope of product' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'environment')
+
+    detail1 = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+    detail2 = product.price_details.build(:production_cost_id => cost.id, :price => 10)
+
+    detail2.valid?
+    assert detail2.errors.invalid?(:production_cost_id)
+  end
+
+  should 'format values to float with 2 decimals' do
+    enterprise = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => enterprise.id)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'environment')
+
+    price_detail = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+
+    assert_equal "10.00", price_detail.formatted_value(:price)
+  end
+
+end
diff --git a/test/unit/product_test.rb b/test/unit/product_test.rb
index 2562122..debb6e4 100644
--- a/test/unit/product_test.rb
+++ b/test/unit/product_test.rb
@@ -375,4 +375,132 @@ class ProductTest < Test::Unit::TestCase
     assert_includes Product.find_by_contents('thing'), p2
   end
 
+  should 'respond to price details' do
+    product = Product.new
+    assert_respond_to product, :price_details
+  end
+
+  should 'return total value of inputs' do
+    product = fast_create(Product)
+    first = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 20.0, :amount_used => 2)
+    second = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 10.0, :amount_used => 1)
+
+    assert_equal 50.0, product.inputs_cost
+  end
+
+  should 'return 0 on total value of inputs if has no input' do
+    product = fast_create(Product)
+
+    assert product.inputs_cost.zero?
+  end
+
+  should 'know if price is described' do
+    product = fast_create(Product, :price => 30.0)
+
+    first = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 20.0, :amount_used => 1)
+    assert !Product.find(product.id).price_described?
+
+    second = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 10.0, :amount_used => 1)
+    assert Product.find(product.id).price_described?
+  end
+
+  should 'return false on price_described if price of product is not defined' do
+    product = fast_create(Product)
+
+    assert_equal false, product.price_described?
+  end
+
+  should 'create price details' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    assert product.price_details.empty?
+
+    product.update_price_details([{:production_cost_id => cost.id, :price => 10}])
+    assert_equal 1, Product.find(product.id).price_details.size
+  end
+
+  should 'update price of a cost on price details' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    cost2 = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    price_detail = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+    assert !product.price_details.empty?
+
+    product.update_price_details([{:production_cost_id => cost.id, :price => 20}, {:production_cost_id => cost2.id, :price => 30}])
+    assert_equal 20, product.price_details.find_by_production_cost_id(cost.id).price
+    assert_equal 2, Product.find(product.id).price_details.size
+  end
+
+  should 'destroy price details if product is removed' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    price_detail = product.price_details.create(:production_cost_id => cost.id, :price => 10)
+
+    assert_difference PriceDetail, :count, -1 do
+      product.destroy
+    end
+  end
+
+  should 'have production costs' do
+    product = fast_create(Product)
+    cost = fast_create(ProductionCost, :owner_id => Environment.default.id, :owner_type => 'Environment')
+    product.price_details.create(:production_cost_id => cost.id, :price => 10)
+    assert_equal [cost], Product.find(product.id).production_costs
+  end
+
+  should 'return production costs from enterprise and environment' do
+    ent = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => ent.id)
+    ent_production_cost = fast_create(ProductionCost, :owner_id => ent.id, :owner_type => 'Profile')
+    env_production_cost = fast_create(ProductionCost, :owner_id => ent.environment.id, :owner_type => 'Environment')
+
+    assert_equal [env_production_cost, ent_production_cost], product.available_production_costs
+  end
+
+  should 'return all production costs' do
+    ent = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => ent.id)
+
+    env_production_cost = fast_create(ProductionCost, :owner_id => ent.environment.id, :owner_type => 'Environment')
+    ent_production_cost = fast_create(ProductionCost, :owner_id => ent.id, :owner_type => 'Profile')
+    product.price_details.create(:production_cost => env_production_cost, :product => product)
+    assert_equal [env_production_cost, ent_production_cost], product.available_production_costs
+  end
+
+  should 'return total value of production costs' do
+    ent = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => ent.id)
+
+    env_production_cost = fast_create(ProductionCost, :owner_id => ent.environment.id, :owner_type => 'Environment')
+    price_detail = product.price_details.create(:production_cost => env_production_cost, :price => 10)
+
+    input = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 20.0, :amount_used => 2)
+
+    assert_equal price_detail.price + input.cost, product.total_production_cost
+  end
+
+  should 'return inputs cost as total value of production costs if has no price details' do
+    ent = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => ent.id)
+
+    input = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 20.0, :amount_used => 2)
+
+    assert_equal input.cost, product.total_production_cost
+  end
+
+  should 'return 0 on total production cost if has no input and price details' do
+    product = fast_create(Product)
+
+    assert product.total_production_cost.zero?
+  end
+
+  should 'format inputs cost values to float with 2 decimals' do
+    ent = fast_create(Enterprise)
+    product = fast_create(Product, :enterprise_id => ent.id)
+    first = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 20.0, :amount_used => 2)
+    second = fast_create(Input, :product_id => product.id, :product_category_id => fast_create(ProductCategory).id, :price_per_unit => 10.0, :amount_used => 1)
+
+    assert_equal "50.00", product.formatted_value(:inputs_cost)
+  end
+
 end
diff --git a/test/unit/production_cost_test.rb b/test/unit/production_cost_test.rb
new file mode 100644
index 0000000..f266b37
--- /dev/null
+++ b/test/unit/production_cost_test.rb
@@ -0,0 +1,102 @@
+require File.dirname(__FILE__) + '/../test_helper'
+
+class ProductionCostTest < ActiveSupport::TestCase
+
+  should 'have name' do
+    p = ProductionCost.new
+    p.valid?
+    assert p.errors.invalid?(:name)
+
+    p.name = 'Taxes'
+    p.valid?
+    assert !p.errors.invalid?(:name)
+  end
+
+  should 'not validates name if it is blank' do
+    p = ProductionCost.new
+
+    p.valid?
+    assert_equal 1, p.errors['name'].to_a.count
+  end
+
+  should 'not have a too long name' do
+    p = ProductionCost.new
+
+    p.name = 'a'*40
+    p.valid?
+    assert p.errors.invalid?(:name)
+
+    p.name = 'a'*30
+    p.valid?
+    assert !p.errors.invalid?(:name)
+  end
+
+  should 'not have duplicated name on same environment' do
+    cost = ProductionCost.create(:name => 'Taxes', :owner => Environment.default)
+
+    invalid_cost = ProductionCost.new(:name => 'Taxes', :owner => Environment.default)
+    invalid_cost.valid?
+
+    assert invalid_cost.errors.invalid?(:name)
+  end
+
+  should 'not have duplicated name on same enterprise' do
+    enterprise = fast_create(Enterprise)
+    cost = ProductionCost.create(:name => 'Taxes', :owner => enterprise)
+
+    invalid_cost = ProductionCost.new(:name => 'Taxes', :owner => enterprise)
+    invalid_cost.valid?
+
+    assert invalid_cost.errors.invalid?(:name)
+  end
+
+  should 'not allow same name on enterprise if already has on environment' do
+    enterprise = fast_create(Enterprise)
+
+    cost1 = ProductionCost.create(:name => 'Taxes', :owner => Environment.default)
+    cost2 = ProductionCost.new(:name => 'Taxes', :owner => enterprise)
+
+    cost2.valid?
+
+    assert !cost2.errors.invalid?(:name)
+  end
+
+  should 'allow duplicated name on different enterprises' do
+    enterprise = fast_create(Enterprise)
+    enterprise2 = fast_create(Enterprise)
+
+    cost1 = ProductionCost.create(:name => 'Taxes', :owner => enterprise)
+    cost2 = ProductionCost.new(:name => 'Taxes', :owner => enterprise2)
+
+    cost2.valid?
+
+    assert !cost2.errors.invalid?(:name)
+  end
+
+  should 'be associated to an environment as owner' do
+    p = ProductionCost.new
+    p.valid?
+    assert p.errors.invalid?(:owner)
+
+    p.owner = Environment.default
+    p.valid?
+    assert !p.errors.invalid?(:owner)
+  end
+
+  should 'be associated to an enterprise as owner' do
+    enterprise = fast_create(Enterprise)
+    p = ProductionCost.new
+    p.valid?
+    assert p.errors.invalid?(:owner)
+
+    p.owner = enterprise
+    p.valid?
+    assert !p.errors.invalid?(:owner)
+  end
+
+  should 'create a production cost on an enterprise' do
+    enterprise = fast_create(Enterprise)
+    enterprise.production_costs.create(:name => 'Energy')
+    assert_equal ['Energy'], enterprise.production_costs.map(&:name)
+  end
+end
--
libgit2 0.21.2