Outsource poems to a service

source/documents/_scripts.html.jade

@@ -6,6 +6,7 @@ script(src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.20/angular-sanitize.
 script(src="//cdnjs.cloudflare.com/ajax/libs/marked/0.3.2/marked.js")
 script(src="scripts/app.js")
 script(src="scripts/services/fetch.js")
+script(src="scripts/services/poems.js")
 script(src="scripts/services/reader/_factory.js")
 script(src="scripts/services/reader/markdown.js")
 script(src="scripts/services/reader/json.js")

source/documents/scripts/controllers.js.coffee

@@ -9,29 +9,29 @@ angular.module("sideBySide.controllers", [])
 ]
 
 .controller "ComparisonController", [
-	'$routeParams', '$q', '$scope', 'fetch', 'transformer'
-	($routeParams, $q, $scope, fetch, transformer) ->
+	'$routeParams', '$rootScope', '$scope', 'poems', 'transformer'
+	($routeParams, $rootScope, $scope, poems, transformer) ->
 		$scope.columns = 1
 		$scope.verses = [[{
 			section: 'Loading...'
 			text: 'Please be patient!'
 		}]]
 
-		update = (config) ->
-			fetch(config).then((result) ->
-				$q.all(result.promises).then((results) ->
-					$scope.columns = results.length
-					transformed = transformer(results)
-					$scope.verses = transformed.verses
-					$scope.meta = transformed.meta
-					headingKey = result.heading or "Author"
-					$scope.headings = (version[headingKey] for version in transformed.meta)
-				)
-			)
+		$rootScope.$on "poemsLoaded", () ->
+			update()
+
+		update = () ->
+			results = poems.get()
+			$scope.columns = results.length
+			transformed = transformer(results)
+			$scope.verses = transformed.verses
+			$scope.meta = transformed.meta
+			headingKey = poems.getHeading() or "Author"
+			$scope.headings = (version[headingKey] for version in transformed.meta)
 
 		config = if $routeParams.base \
 			then $routeParams.base.replace(/\./g, '/') \
 			else ''
 
-		update(config + "/config.json")
+		poems.update(config + "/config.json")
 ]

source/documents/scripts/services/poems.js.coffee

@@ -0,0 +1,21 @@
+angular.module("sideBySide").service "poems", ['$rootScope', '$q', 'fetch', ($rootScope, $q, fetch) ->
+	poems = []
+	heading = undefined
+
+	@update = (config) ->
+		fetch(config).then((result) ->
+			$q.all(result.promises).then((results) ->
+				poems = results
+				heading = result.heading
+				$rootScope.$emit "poemsLoaded"
+			)
+		)
+
+	@get = () ->
+		poems
+
+	@getHeading = () ->
+		heading
+
+	@
+]