[Framework] Add bundle resolver; normalize initialization

Simplify the extension initializer by putting each
phase's responsibilities into a specific class.
WTD-518.

platform/framework/src/Bundle.js

@@ -108,6 +108,12 @@ define(
                 getLogName: function () {
                     return logName;
                 },
+                /**
+                 *
+                 * @param category
+                 * @memberof Bundle#
+                 * @returns {Array}
+                 */
                 getExtensions: function (category) {
                     var extensions = definition.extensions[category] || [];
 
@@ -115,6 +121,10 @@ define(
                         return new Extension(self, category, extDefinition);
                     });
                 },
+                /**
+                 * @memberof Bundle#
+                 * @returns {Array}
+                 */
                 getExtensionCategories: function () {
                     return Object.keys(definition.extensions);
                 },

platform/framework/src/BundleResolver.js

@@ -0,0 +1,73 @@
+/*global define,Promise*/
+
+/**
+ * Module defining BundleResolver. Created by vwoeltje on 11/4/14.
+ */
+define(
+    [],
+    function () {
+        "use strict";
+
+        /**
+         *
+         * @constructor
+         */
+        function BundleResolver(extensionResolver) {
+
+            /**
+             *
+             * @param {Object.<string, object[]>[]} resolvedBundles
+             * @returns {Object.<string, object[]>}
+             */
+            function mergeResolvedBundles(resolvedBundles) {
+                var result = {};
+
+                resolvedBundles.forEach(function (resolved) {
+                    Object.keys(resolved).forEach(function (k) {
+                        result[k] = (result[k] || []).concat(resolved[k]);
+                    });
+                });
+
+                return result;
+            }
+
+            function resolveBundle(bundle) {
+                var categories = bundle.getExtensionCategories(),
+                    result = {};
+
+                function resolveExtension(extension) {
+                    var category = extension.getCategory();
+
+                    function push(resolved) {
+                        result[category].push(resolved);
+                    }
+
+                    return extensionResolver.resolve(extension).then(push);
+                }
+
+                function resolveCategory(category) {
+                    result[category] = [];
+                    return Promise.all(
+                        bundle.getExtensions(category).map(resolveExtension)
+                    );
+                }
+
+                function giveResult() {
+                    return result;
+                }
+
+                return Promise.all(categories.map(resolveCategory))
+                    .then(giveResult);
+            }
+
+            return {
+                resolveBundles: function (bundles) {
+                    return Promise.all(bundles.map(resolveBundle))
+                        .then(mergeResolvedBundles);
+                }
+            };
+        }
+
+        return BundleResolver;
+    }
+);

platform/framework/src/ExtensionRegistrar.js

@@ -25,6 +25,10 @@ define(
                 return category + "[" + name + "]";
             }
 
+            function identifyCategory(category) {
+                return category + Constants.EXTENSION_SUFFIX;
+            }
+
             function echo() {
                 return arguments.slice;
             }
@@ -50,7 +54,7 @@ define(
                 app.factory(name, names.concat([echo]));
             }
 
-            function registerExtensions(category, extensions) {
+            function registerExtensionsForCategory(category, extensions) {
                 var names = [];
 
                 function registerExtension(extension, index) {
@@ -83,10 +87,19 @@ define(
                 }
             }
 
+            function registerExtensionGroup(extensionGroup) {
+                Object.keys(extensionGroup).forEach(function (category) {
+                    registerExtensionsForCategory(
+                        category,
+                        extensionGroup[category]
+                    );
+                });
+            }
+
             customRegistrars = customRegistrars || {};
 
             return {
-                registerExtensions: registerExtensions
+                registerExtensions: registerExtensionGroup
             };
         }
 

platform/framework/src/FrameworkInitializer.js

@@ -12,7 +12,7 @@ define(
          *
          * @constructor
          * @param {BundleLoader} loader
-         * @param {ExtensionResolver} resolver
+         * @param {BundleResolver} resolver
          * @param {ExtensionRegistrar} registrar
          * @param {ApplicationBootstrapper} bootstrapper
          */
@@ -29,20 +29,11 @@ define(
 
             /**
              *
-             * @param bundles
+             * @param {Bundle[]} bundles
              * @returns {Object.<string, object[]>} an object mapping
              */
             function resolveExtensions(bundles) {
-                var resolvedExtensions = {};
-
-
-                function resolveExtensionsForBundle(bundle) {
-
-                }
-
-                return Promises.all(bundles.map(resolveExtensionsForBundle)).then(function () {
-                    return resolvedExtensions;
-                });
+                return resolver.resolveBundles(bundles);
             }
 
             function loadBundles(bundleList) {
@@ -51,10 +42,11 @@ define(
 
             return {
                 runApplication: function (bundleList) {
-                    return loadBundles()
-                        .then(resolveExtensions)
-                        .then(registerExtensions)
-                        .then(bootstrapApplication);
+                    return loader.loadBundles(bundleList)
+                        .then(resolver.resolveBundles)
+                        .then(registrar.registerExtensions)
+                        .then(bootstrapper.bootstrapApplication);
+
                 }
 
             };