Clean master commit

src/lib/Controller.js

@@ -0,0 +1,54 @@
+/**
+ * Controller
+ *
+ */
+class Controller {
+  constructor(fetchers) {
+    this.fetchers = fetchers;
+  }
+
+  sourceExists(source) {
+    return true;
+    if (Object.keys(this.fetchers).indexOf(source) == -1) return false;
+  }
+
+  blueprints() {
+    return Object.keys(this.fetchers).map(
+      source => this.fetchers[source].blueprints
+    );
+  }
+
+  update() {
+    return Promise.all(
+      Object.keys(this.fetchers).map(source => {
+        return this.fetchers[source].update();
+      })
+    ).then(results => {
+      return "All sources updated";
+    });
+  }
+
+  retrieve(source, tab, resource) {
+    if (this.sourceExists(source)) {
+      const fetcher = this.fetchers[source];
+      return fetcher.retrieve(tab, resource);
+    } else {
+      return Promise.resolve().then(() => {
+        throw new Error(`Source ${source} not available.`);
+      });
+    }
+  }
+
+  retrieveFrag(source, tab, resource, frag) {
+    if (this.sourceExists(source)) {
+      const fetcher = this.fetchers[source];
+      return fetcher.retrieveFrag(tab, resource, frag);
+    } else {
+      return Promise.resolve().then(() => {
+        throw new Error(`Source ${source} not available.`);
+      });
+    }
+  }
+}
+
+export default Controller;