Added a GET: /search/suggest/user route for @user tags.

Controllers/api/v2/search/suggest/user.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Minds Core Search API
+ *
+ * @version 2
+ * @author Theodore R. Smith <[email protected]>
+ */
+
+namespace Minds\Controllers\api\v2\search\suggest;
+
+use Minds\Core;
+use Minds\Core\Di\Di;
+use Minds\Interfaces;
+use Minds\Api\Factory;
+use Minds\Entities;
+
+class user implements Interfaces\Api, Interfaces\ApiIgnorePam
+{
+    /**
+     * Equivalent to HTTP GET method
+     * @param  array $pages
+     * @return mixed|null
+     */
+    public function get($pages)
+    {
+        $usernames = Entities\Repositories\UserRepository::getUsersList();
+
+        // Filter by the ones that match.
+        if (!empty($_GET['username'])) {
+            $userSearch = $_GET['username'];
+            $usernames = array_filter($usernames, function($username) use ($userSearch) {
+                return strpos($username, $userSearch) === 0;
+            });
+        }
+
+        return Factory::response([
+            'entities' => $usernames
+        ]);
+
+    }
+
+    /**
+     * Equivalent to HTTP POST method
+     * @param  array $pages
+     * @return mixed|null
+     */
+    public function post($pages)
+    {
+        return Factory::response([]);
+    }
+
+    /**
+     * Equivalent to HTTP PUT method
+     * @param  array $pages
+     * @return mixed|null
+     */
+    public function put($pages)
+    {
+        return Factory::response([]);
+    }
+
+    /**
+     * Equivalent to HTTP DELETE method
+     * @param  array $pages
+     * @return mixed|null
+     */
+    public function delete($pages)
+    {
+        return Factory::response([]);
+    }
+}

Entities/Repositories/UserRepository.php

@@ -0,0 +1,59 @@
+<?php declare(strict_types=1);
+
+namespace Minds\Entities\Repositories;
+
+use Cassandra\Rows;
+use Minds\Core;
+use Minds\Core\Data\cache\abstractCacher;
+use Minds\Core\Data\Cassandra\Client as Cassandra_Client;
+use Minds\Core\Data\Cassandra\Prepared\Custom as Cassandra_Prep_Statement;
+
+class UserRepository
+{
+    public static function getUsersList(Cassandra_Client $cql = null): array
+    {
+        /** @var abstractCacher $cache */
+        $cache = Core\Di\Di::_()->get('Cache');
+
+        $usernames = $cache->get('usernames');
+        if (!empty($usernames)) {
+            return $usernames;
+        }
+
+        $usernames = self::fetchUsernames($cql);
+
+        // Cache for 5 minutes.
+        $cache->set('usernames', $usernames, 300);
+
+        return $usernames;
+    }
+
+    protected static function fetchUsernames(Cassandra_Client $cql = null): array
+    {
+        /** @var Cassandra_Client $cql */
+        $cql = $cql ?: Core\Di\Di::_()->get('Database\Cassandra\Cql');
+        $sql = <<<SQL
+SELECT value AS username FROM minds.entities WHERE column1='username' ALLOW FILTERING;
+SQL;
+
+        $query = new Cassandra_Prep_Statement();
+        $query->query($sql);
+
+        try {
+            /** @var Rows $results */
+            $results = $cql->request($query);
+            if (empty($results)) {
+                return [];
+            }
+        } catch (\Exception $e) {
+            return [];
+        }
+
+        $usernames = [];
+        foreach ($results as $row) {
+            $usernames[] = $row['username'];
+        }
+
+        return $usernames;
+    }
+}