From 6370bd101b9263b135c87143d3c16cd7d6789a41 Mon Sep 17 00:00:00 2001
From: Raymond Rutjes <raymond.rutjes@gmail.com>
Date: Tue, 8 Aug 2017 16:53:26 +0200
Subject: [PATCH] feat(store): do not register facet if already existing

---
 src/components/__tests__/refinement-list.js |  2 +-
 src/store.js                                | 19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/components/__tests__/refinement-list.js b/src/components/__tests__/refinement-list.js
index a377fa12a..3b80325e3 100644
--- a/src/components/__tests__/refinement-list.js
+++ b/src/components/__tests__/refinement-list.js
@@ -32,7 +32,7 @@ test('renders proper HTML', () => {
   expect(vm.$el.outerHTML).toMatchSnapshot();
 });
 
-test('should add a facet to the store when mounted', () => {
+test('should add a facet to the store when created', () => {
   const Component = Vue.extend(RefinementList);
   const addFacetMock = jest.fn();
   const store = Object.assign({}, searchStore, { addFacet: addFacetMock });
diff --git a/src/store.js b/src/store.js
index 19024e862..ea3629584 100644
--- a/src/store.js
+++ b/src/store.js
@@ -200,7 +200,9 @@ export class Store {
   }
 
   addFacet(attribute, type = FACET_AND) {
-    assertValidFacetType(type);
+    if (this.hasFacet(attribute, type)) {
+      return;
+    }
 
     this.stop();
 
@@ -244,6 +246,21 @@ export class Store {
     this._helper.setState(state);
   }
 
+  hasFacet(attribute, type = FACET_AND) {
+    assertValidFacetType(type);
+
+    switch (type) {
+      case FACET_AND:
+        return this._helper.state.isConjunctiveFacet(attribute);
+      case FACET_OR:
+        return this._helper.state.isDisjunctiveFacet(attribute);
+      case FACET_TREE:
+        return this._helper.state.isHierarchicalFacet(attribute);
+      default:
+        throw new TypeError(`${type} could not be handled.`);
+    }
+  }
+
   addFacetRefinement(attribute, value) {
     if (this._helper.state.isConjunctiveFacet(attribute)) {
       this._helper.addFacetRefinement(attribute, value);