Add normalization of plugins

1 files changed, 87 insertions, 1 deletions

diff --git a/lib/plugin.js b/lib/plugin.js
index 6767aed..f558bf8 100644
--- a/lib/plugin.js
+++ b/lib/plugin.js
@@ -90,7 +90,7 @@ Plugin.prototype.getResources = function(base) {
     return this._getResources(base)
     .then(function(resources) {
 
-        _.each(RESOURCES, function(resourceType) {
+        _.each(Plugin.RESOURCES, function(resourceType) {
             resources[resourceType] = (resources[resourceType] || []).map(that.normalizeResource);
         });
 
@@ -150,4 +150,90 @@ Plugin.prototype.copyAssets = function(out, options) {
     }, _.constant(false));
 };
 
+
+// Extract data from a list of plugin
+Plugin.normalize = function(plugins, generator, options) {
+    options = _.defaults(options || {}, {
+        assetsBase: "book"
+    });
+
+    // The raw resources extracted from each plugin
+    var pluginResources;
+
+    // Get resources of plugins
+    return Q.all(_.map(plugins, function(plugin) {
+        return plugin.getResources(options.assetsBase);
+    }))
+
+    // Extract resources out
+    // css, js, etc ...
+    .then(function(resources) {
+        pluginResources = resources;
+        // Group by resource types
+        return _.chain(Plugin.RESOURCES)
+        .map(function(resourceType) {
+            // Get resources from all the plugins for this current type
+            return [
+                // Key
+                resourceType,
+                // Value
+                _.chain(resources)
+                .pluck(resourceType)
+                .compact()
+                .flatten()
+                .value()
+            ];
+        })
+        .object()
+        .value();
+    })
+    // Extract html snippets
+    .then(function(resources) {
+        // Map of html resources by name added by each plugin
+        resources.html = pluginResources.reduce(function(accu, resource) {
+            var html = (resource && resource.html) || {};
+            _.each(html, function(code, key) {
+                // Turn into function if not one already
+                if (!_.isFunction(code)) code = _.constant(code);
+                // Append
+                accu[key] = (accu[key] || []).concat([code]);
+            });
+
+            return accu;
+        }, {});
+
+        return resources;
+    })
+    // Return big multi-plugin object
+    .then(function(resources) {
+        return {
+            'list': plugins,
+            'resources': resources,
+            'hook': function(name, data) {
+                return _.reduce(plugins, function(prev, plugin) {
+                    return prev.then(function(ret) {
+                        return plugin.callHook(name, ret);
+                    });
+                }, Q(data));
+            },
+            'template': function(name) {
+                var withTpl = _.find(plugins, function(plugin) {
+                    return (
+                        plugin.infos.templates &&
+                        plugin.infos.templates[name]
+                    );
+                });
+
+                if (!withTpl) return null;
+                return withTpl.resolveFile(withTpl.infos.templates[name]);
+            },
+            'html': function(tag, context, options) {
+                return _.map(resources.html[tag] || [], function(code) {
+                    return code.call(context, options);
+                }).join("\n");
+            }
+        };
+    });
+};
+
 module.exports = Plugin;