Initial implementation at plugins

graph/typeDefs.js

@@ -4,8 +4,26 @@
 
 const fs = require('fs');
 const path = require('path');
+const {mergeStrings} = require('gql-merge');
+const debug = require('debug')('talk:graph:typeDefs');
+const plugins = require('../plugins');
 
-// Load the typeDefs from the graphql file.
-const typeDefs = fs.readFileSync(path.join(__dirname, 'typeDefs.graphql'), 'utf8');
+/**
+ * Plugin support requires us to merge the type definitions from the loaded
+ * graphql tags, this gives us the ability to extend any portion of the
+ * available graph.
+ */
+const typeDefs = mergeStrings([
+
+  // Load the core graph definitions from the filesystem.
+  fs.readFileSync(path.join(__dirname, 'typeDefs.graphql'), 'utf8'),
+
+  // Load the plugin definitions from the manager.
+  ...plugins.get('server', 'typeDefs').map(({plugin, typeDefs}) => {
+    debug(`added plugin '${plugin.name}'`);
+
+    return typeDefs;
+  })
+]);
 
 module.exports = typeDefs;