Add meta description tags

src/coffee/constants.coffee

@@ -114,8 +114,15 @@ exports.ProductionEnvs = [ 'staging', 'production' ]
 
 exports.RequiredMods = [ 'minecraft' ]
 
-exports.Text = Text = {}
-Text.title = 'The Ultimate Minecraft Crafting Guide'
+exports.Text           = Text = {}
+Text.browseDescription = _.template 'Browse through complete item listings for over a dozen top mods and use the interactive crafting planner for step-by-step instructions'
+Text.configDescription = _.template 'Configure the interactive crafting planner for your exact modpack and get step-by-step instructions for any item in your world'
+Text.craftDescription  = _.template 'Build anything in your Minecraft mod pack with a full list of materials and step-by-step instructions using our interactive crafting planner'
+Text.homeDescription   = _.template 'Find everything you need to know about your Minecraft mod pack and use the interactive crafting planner for step-by-step instructions and full lists of materials'
+Text.itemDescription   = _.template 'Make <%= itemName %> and the rest of <%= modName %> easy and use the interactive crafting planner for step-by-step instructions'
+Text.modDescription    = _.template 'Make <%= modName %> easy with tutorials, videos, and a full item listing along with an interactive crafting planner for step-by-step instructions'
+Text.title             = _.template 'Minecraft Crafting Guide'
+Text.titleWithText     = _.template '<%= text %> | Minecraft Crafting Guide'
 
 exports.Url          = Url = {}
 Url.crafting         = _.template "/craft/<%= inventoryText %>"

src/coffee/controllers/browse_page_controller.coffee

@@ -10,6 +10,7 @@ ModController     = require './mod_controller'
 PageController    = require './page_controller'
 {Duration}        = require '../constants'
 {Event}           = require '../constants'
+{Text}            = require '../constants'
 
 ########################################################################################################################
 
@@ -25,6 +26,9 @@ module.exports = class BrowsePageController extends PageController
 
     # PageController Overrides #####################################################################
 
+    getMetaDescription: ->
+        return Text.browseDescription()
+
     getTitle: ->
         return 'Browse'
 

src/coffee/controllers/configure_page_controller.coffee

@@ -8,6 +8,7 @@ All rights reserved.
 AdsenseController = require './adsense_controller'
 PageController    = require './page_controller'
 ModPackController = require './mod_pack_controller'
+{Text}            = require '../constants'
 
 ########################################################################################################################
 
@@ -24,6 +25,9 @@ module.exports = class ConfigurePageController extends PageController
 
     # PageController Overrides #####################################################################
 
+    getMetaDescription: ->
+        return Text.configDescription()
+
     getTitle: ->
         return "Configure"
 
@@ -36,4 +40,4 @@ module.exports = class ConfigurePageController extends PageController
 
     refresh: ->
         @adsenseController.fillAdPositions()
-        super
+        super

src/coffee/controllers/craft_page_controller.coffee

@@ -12,6 +12,7 @@ PageController      = require './page_controller'
 StepController      = require './step_controller'
 _                   = require 'underscore'
 {Event}             = require '../constants'
+{Text}              = require '../constants'
 {Url}               = require '../constants'
 
 ########################################################################################################################
@@ -74,6 +75,9 @@ module.exports = class CraftPageController extends PageController
 
     # PageController Overrides #####################################################################
 
+    getMetaDescription: ->
+        return Text.craftDescription()
+
     getTitle: ->
         return 'Craft'
 

src/coffee/controllers/home_page_controller.coffee

@@ -8,6 +8,7 @@ All rights reserved.
 AdsenseController = require './adsense_controller'
 PageController    = require './page_controller'
 _                 = require 'underscore'
+{Text}            = require '../constants'
 
 ########################################################################################################################
 
@@ -17,6 +18,11 @@ module.exports = class HomeController extends PageController
         options.templateName = 'home_page'
         super options
 
+    # PageController Overrides #####################################################################
+
+    getMetaDescription: ->
+        return Text.homeDescription()
+
     # BaseController Overrides #####################################################################
 
     onDidRender: ->

src/coffee/controllers/item_page_controller.coffee

@@ -56,8 +56,17 @@ module.exports = class ItemPageController extends PageController
 
     # PageController Overrides #####################################################################
 
+    getMetaDescription: ->
+        if @model.item?
+            display = @modPack.findItemDisplay @model.item.slug
+            return Text.itemDescription display
+        else
+            return null
+
     getTitle: ->
-        return @model.item?.name
+        return unless @model.item?
+        display = @modPack.findItemDisplay @model.item.slug
+        return "#{display.itemName} from #{display.modName}"
 
     # BaseController Overrides #####################################################################
 

src/coffee/controllers/mod_page_controller.coffee

@@ -61,6 +61,10 @@ module.exports = class ModPageController extends PageController
 
     # PageController Overrides #####################################################################
 
+    getMetaDescription: ->
+        return unless @model?
+        return Text.modDescription modName:@model.name
+
     getTitle: ->
         return @model?.name
 

src/coffee/controllers/page_controller.coffee

@@ -18,6 +18,10 @@ module.exports = class PageController extends BaseController
 
     # Public Methods ###############################################################################
 
+    getMetaDescription: ->
+        # subclasses should override this to return the page-specific text for the meta description tag
+        return null
+
     getTitle: ->
         # subclasses should override this to return the page-specific portion of the title
         return null
@@ -25,14 +29,25 @@ module.exports = class PageController extends BaseController
     # BaseController Overrides #####################################################################
 
     refresh: ->
+        @_refreshMetaDescription()
+        @_refreshTitle()
+        super
+
+    # Private Methods ##############################################################################
+
+    _refreshMetaDescription: ->
+        description = @getMetaDescription()
+        description ?= ''
+
+        if description.length > 0
+            $('meta[name="description"]').remove()
+            $('head').append "<meta name=\"description\" content=\"#{description}\">"
+
+    _refreshTitle: ->
         title = @getTitle()
         title = if title? then title.trim() else ''
 
         if title.length > 0
-            title += " | #{Text.title}"
+            $('title').html Text.titleWithText text:title
         else
-            title = Text.title
-
-        $('title').html title
-
-        super
+            $('title').html Text.title()