Check filter selected and show selected items on top

src/lib.js

@@ -304,14 +304,15 @@ module.exports.buckets = function(items, field, agg, aggregations) {
   buckets = _.map(buckets, (val, key) => {
     return {
       key: key,
-      doc_count: val
+      doc_count: val,
+      selected: _.includes(key, agg.filters)
     };
-  })
+  });
 
   if (agg.sort === 'term') {
-    buckets = _.orderBy(buckets, ['key'], [agg.order || 'asc']);
+    buckets = _.orderBy(buckets, ['selected', 'key'], ['desc', agg.order || 'asc']);
   } else {
-    buckets = _.orderBy(buckets, ['doc_count', 'key'], [agg.order || 'desc', 'asc']);
+    buckets = _.orderBy(buckets, ['selected', 'doc_count', 'key'], ['desc', agg.order || 'desc', 'asc']);
   }
 
   return buckets;

tests/aggregationsSpec.js

@@ -277,4 +277,24 @@ describe('aggregations', function() {
     done();
   });
 
+  it('returns aggregations with multi array filtering, selected on top', function test(done) {
+    var movies = require('./fixtures/movies_agg_selected.json')
+
+    var result = service.aggregations(movies, {
+      actors: {
+        filters: ['Morgan Freeman']
+      },
+      tags: {
+        filters: ['falling into a well']
+      }
+    })
+
+    assert.equal(result.tags.buckets.length, 5);
+    assert.equal(result.actors.buckets.length, 10);
+    assert.notEqual(result.actors.buckets.find(e => e.key === "Morgan Freeman") , undefined);
+    assert.equal(result.actors.buckets[0].key, "Morgan Freeman");
+
+    done();
+  });
+
 });

tests/fixtures/movies_agg_selected.json

@@ -0,0 +1,142 @@
+[
+  {
+    "name": "movie1",
+    "tags": ["a", "b", "c", "d"],
+    "actors": ["a", "b", "m"]
+  },
+  {
+    "tags": [
+      "social decay",
+      "well",
+      "deception",
+      "falling down a well",
+      "falling into a well"
+    ],
+    "actors": [
+      "Christian Bale",
+      "Michael Caine",
+      "Liam Neeson",
+      "Katie Holmes",
+      "Gary Oldman",
+      "Cillian Murphy",
+      "Tom Wilkinson",
+      "Rutger Hauer",
+      "Ken Watanabe",
+      "Mark Boone Junior",
+      "Linus Roache",
+      "Morgan Freeman",
+      "Larry Holden",
+      "Gerard Murphy",
+      "Colin McFarlane"
+    ],
+    "name": "Batman Begins"
+  },
+  {
+    "name": "The Dark Knight",
+    "tags": [
+      "dc comics",
+      "moral dilemma",
+      "psychopath",
+      "false confession",
+      "star died before release"
+    ],
+    "actors": [
+      "Christian Bale",
+      "Michael Caine",
+      "Liam Neeson",
+      "Katie Holmes",
+      "Gary Oldman",
+      "Cillian Murphy",
+      "Tom Wilkinson",
+      "Rutger Hauer",
+      "Ken Watanabe",
+      "Mark Boone Junior",
+      "Linus Roache",
+      "Morgan Freeman",
+      "Larry Holden",
+      "Gerard Murphy",
+      "Colin McFarlane"
+    ]
+  },
+  {
+    "name": "The Shawshank Redemption",
+    "tags": [
+      "prison",
+      "wrongful imprisonment",
+      "escape from prison",
+      "prison cell search",
+      "first person narration"
+    ],
+    "actors": [
+      "Tim Robbins",
+      "Morgan Freeman",
+      "Bob Gunton",
+      "William Sadler",
+      "Clancy Brown",
+      "Gil Bellows",
+      "Mark Rolston",
+      "James Whitmore",
+      "Jeffrey DeMunn",
+      "Larry Brandenburg",
+      "Neil Giuntoli",
+      "Brian Libby",
+      "David Proval",
+      "Joseph Ragno",
+      "Jude Ciccolella"
+    ]
+  },
+  {
+    "name": "Se7en",
+    "tags": [
+      "detective",
+      "serial killer",
+      "seven deadly sins",
+      "police partner",
+      "human monster"
+    ],
+    "actors": [
+      "Morgan Freeman",
+      "Andrew Kevin Walker",
+      "Kevin Spacey",
+      "Daniel Zacapa",
+      "Brad Pitt",
+      "Gwyneth Paltrow",
+      "John Cassini",
+      "Bob Mack",
+      "Peter Crombie",
+      "Reg E. Cathey",
+      "R. Lee Ermey",
+      "George Christy",
+      "Endre Hules",
+      "Hawthorne James",
+      "William Davidson"
+    ]
+  },
+  {
+    "tags": [
+      "female villain",
+      "mysterious woman",
+      "suspense",
+      "written by director",
+      "woman fights a man"
+    ],
+    "actors": [
+      "Christian Bale",
+      "Gary Oldman",
+      "Tom Hardy",
+      "Joseph Gordon-Levitt",
+      "Anne Hathaway",
+      "Marion Cotillard",
+      "Morgan Freeman",
+      "Michael Caine",
+      "Matthew Modine",
+      "Alon Aboutboul",
+      "Ben Mendelsohn",
+      "Burn Gorman",
+      "Daniel Sunjata",
+      "Aidan Gillen",
+      "Sam Kennard"
+    ],
+    "name": "The Dark Knight Rises"
+  }
+]