UI: fuzzy and tokenized job search

ui/app/controllers/jobs/index.js

@@ -25,6 +25,8 @@ export default Controller.extend(Sortable, Searchable, {
   sortDescending: true,
 
   searchProps: computed(() => ['id', 'name']),
+  fuzzySearchProps: computed(() => ['name']),
+  fuzzySearchEnabled: true,
 
   /**
     Filtered jobs are those that match the selected namespace and aren't children

ui/app/mixins/searchable.js

@@ -1,5 +1,7 @@
 import Mixin from '@ember/object/mixin';
 import { get, computed } from '@ember/object';
+import { reads } from '@ember/object/computed';
+import Fuse from 'npm:fuse.js';
 
 /**
   Searchable mixin
@@ -9,6 +11,12 @@ import { get, computed } from '@ember/object';
   Properties to override:
     - searchTerm: the string to use as a query
     - searchProps: the props on each object to search
+    -- exactMatchSearchProps: the props for exact search when props are different per search type
+    -- regexSearchProps: the props for regex search when props are different per search type
+    -- fuzzySearchProps: the props for fuzzy search when props are different per search type
+    - exactMatchEnabled: (true) disable to not use the exact match search type
+    - fuzzySearchEnabled: (false) enable to use the fuzzy search type
+    - regexEnabled: (true) disable to disable the regex search type
     - listToSearch: the list of objects to search
 
   Properties provided:
@@ -17,17 +25,77 @@ import { get, computed } from '@ember/object';
 export default Mixin.create({
   searchTerm: '',
   listToSearch: computed(() => []),
+
   searchProps: null,
+  exactMatchSearchProps: reads('searchProps'),
+  regexSearchProps: reads('searchProps'),
+  fuzzySearchProps: reads('searchProps'),
 
-  listSearched: computed('searchTerm', 'listToSearch.[]', 'searchProps.[]', function() {
-    const searchTerm = this.get('searchTerm');
-    if (searchTerm && searchTerm.length) {
-      return regexSearch(searchTerm, this.get('listToSearch'), this.get('searchProps'));
-    }
-    return this.get('listToSearch');
+  // Three search modes
+  exactMatchEnabled: true,
+  fuzzySearchEnabled: false,
+  regexEnabled: true,
+
+  fuse: computed('listToSearch.[]', 'fuzzySearchProps.[]', function() {
+    return new Fuse(this.get('listToSearch'), {
+      shouldSort: true,
+      threshold: 0.4,
+      location: 0,
+      distance: 100,
+      tokenize: true,
+      matchAllTokens: true,
+      maxPatternLength: 32,
+      minMatchCharLength: 1,
+      keys: this.get('fuzzySearchProps') || [],
+      getFn(item, key) {
+        return get(item, key);
+      },
+    });
   }),
+
+  listSearched: computed(
+    'searchTerm',
+    'listToSearch.[]',
+    'exactMatchEnabled',
+    'fuzzySearchEnabled',
+    'regexEnabled',
+    'exactMatchSearchProps.[]',
+    'fuzzySearchProps.[]',
+    'regexSearchProps.[]',
+    function() {
+      const searchTerm = this.get('searchTerm').trim();
+      if (searchTerm && searchTerm.length) {
+        const results = [];
+        if (this.get('exactMatchEnabled')) {
+          results.push(
+            ...exactMatchSearch(
+              searchTerm,
+              this.get('listToSearch'),
+              this.get('exactMatchSearchProps')
+            )
+          );
+        }
+        if (this.get('fuzzySearchEnabled')) {
+          results.push(...this.get('fuse').search(searchTerm));
+        }
+        if (this.get('regexEnabled')) {
+          results.push(
+            ...regexSearch(searchTerm, this.get('listToSearch'), this.get('regexSearchProps'))
+          );
+        }
+        return results.uniq();
+      }
+      return this.get('listToSearch');
+    }
+  ),
 });
 
+function exactMatchSearch(term, list, keys) {
+  if (term.length) {
+    return list.filter(item => keys.some(key => get(item, key) === term));
+  }
+}
+
 function regexSearch(term, list, keys) {
   if (term.length) {
     try {
@@ -38,5 +106,6 @@ function regexSearch(term, list, keys) {
     } catch (e) {
       // Swallow the error; most likely due to an eager search of an incomplete regex
     }
+    return [];
   }
 }

ui/app/templates/jobs/index.hbs

@@ -38,6 +38,9 @@
           <nav class="pagination">
             <div class="pagination-numbers">
               {{p.startsAt}}&ndash;{{p.endsAt}} of {{sortedJobs.length}}
+              {{#if searchTerm}}
+                <em>({{dec sortedJobs.length filteredJobs.length}} hidden by search term)</em>
+              {{/if}}
             </div>
             {{#p.prev class="pagination-previous"}} &lt; {{/p.prev}}
             {{#p.next class="pagination-next"}} &gt; {{/p.next}}

ui/package.json

@@ -67,6 +67,7 @@
     "ember-welcome-page": "^3.0.0",
     "eslint": "^4.13.1",
     "flat": "^4.0.0",
+    "fuse.js": "~3.2.0",
     "husky": "^0.14.3",
     "json-formatter-js": "^2.2.0",
     "lint-staged": "^6.0.0",

ui/tests/unit/mixins/searchable-test.js

@@ -55,3 +55,124 @@ test('the searchable mixin only searches the declared search props', function(as
     'Only USA matched, since continent is not a search prop'
   );
 });
+
+test('the fuzzy search mode is off by default', function(assert) {
+  const subject = this.subject();
+  subject.set('source', [
+    { id: '1', name: 'United States of America', continent: 'North America' },
+    { id: '2', name: 'Canada', continent: 'North America' },
+    { id: '3', name: 'Mexico', continent: 'North America' },
+  ]);
+
+  subject.set('searchTerm', 'Ameerica');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [],
+    'Nothing is matched since America is spelled incorrectly'
+  );
+});
+
+test('the fuzzy search mode can be enabled', function(assert) {
+  const subject = this.subject();
+  subject.set('source', [
+    { id: '1', name: 'United States of America', continent: 'North America' },
+    { id: '2', name: 'Canada', continent: 'North America' },
+    { id: '3', name: 'Mexico', continent: 'North America' },
+  ]);
+
+  subject.set('fuzzySearchEnabled', true);
+  subject.set('searchTerm', 'Ameerica');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [{ id: '1', name: 'United States of America', continent: 'North America' }],
+    'America is matched due to fuzzy matching'
+  );
+});
+
+test('the exact match search mode can be disabled', function(assert) {
+  const subject = this.subject();
+  subject.set('source', [
+    { id: '1', name: 'United States of America', continent: 'North America' },
+    { id: '2', name: 'Canada', continent: 'North America' },
+    { id: '3', name: 'Mexico', continent: 'North America' },
+  ]);
+
+  subject.set('regexSearchProps', []);
+  subject.set('searchTerm', 'Mexico');
+
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [{ id: '3', name: 'Mexico', continent: 'North America' }],
+    'Mexico is matched exactly'
+  );
+
+  subject.set('exactMatchEnabled', false);
+
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [],
+    'Nothing is matched now that exactMatch is disabled'
+  );
+});
+
+test('the regex search mode can be disabled', function(assert) {
+  const subject = this.subject();
+  subject.set('source', [
+    { id: '1', name: 'United States of America', continent: 'North America' },
+    { id: '2', name: 'Canada', continent: 'North America' },
+    { id: '3', name: 'Mexico', continent: 'North America' },
+  ]);
+
+  subject.set('searchTerm', '^.{6}$');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [
+      { id: '2', name: 'Canada', continent: 'North America' },
+      { id: '3', name: 'Mexico', continent: 'North America' },
+    ],
+    'Canada and Mexico meet the regex criteria'
+  );
+
+  subject.set('regexEnabled', false);
+
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [],
+    'Nothing is matched now that regex is disabled'
+  );
+});
+
+test('each search mode has independent search props', function(assert) {
+  const subject = this.subject();
+  subject.set('source', [
+    { id: '1', name: 'United States of America', continent: 'North America' },
+    { id: '2', name: 'Canada', continent: 'North America' },
+    { id: '3', name: 'Mexico', continent: 'North America' },
+  ]);
+
+  subject.set('fuzzySearchEnabled', true);
+  subject.set('regexSearchProps', ['id']);
+  subject.set('exactMatchSearchProps', ['continent']);
+  subject.set('fuzzySearchProps', ['name']);
+
+  subject.set('searchTerm', 'Nor America');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [],
+    'Not an exact match on continent, not a matchAllTokens match on fuzzy, not a regex match on id'
+  );
+
+  subject.set('searchTerm', 'America States');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [{ id: '1', name: 'United States of America', continent: 'North America' }],
+    'Fuzzy match on one country, but not an exact match on continent'
+  );
+
+  subject.set('searchTerm', '^(.a){3}$');
+  assert.deepEqual(
+    subject.get('listSearched'),
+    [],
+    'Canada is not matched by the regex because only id is looked at for regex search'
+  );
+});

ui/yarn.lock

@@ -4280,6 +4280,10 @@ functional-red-black-tree@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/functional-red-black-tree/-/functional-red-black-tree-1.0.1.tgz#1b0ab3bd553b2a0d6399d29c0e3ea0b252078327"
 
+fuse.js@~3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/fuse.js/-/fuse.js-3.2.0.tgz#f0448e8069855bf2a3e683cdc1d320e7e2a07ef4"
+
 gauge@~2.7.3:
   version "2.7.4"
   resolved "https://registry.yarnpkg.com/gauge/-/gauge-2.7.4.tgz#2c03405c7538c39d7eb37b317022e325fb018bf7"