Make "minutes until a song is re-requestable" a per-station configurable variable.

app/config/forms/station.conf.php

@@ -173,6 +173,15 @@ return [
                     ]
                 ],
 
+                'request_threshold' => [
+                    'text',
+                    [
+                        'label' => _('Request Last Played Threshold (Minutes)'),
+                        'description' => _('If requests are enabled, this specifies the minimum time (in minutes) between a song playing on the radio and being available to request again. Set to 0 for no threshold.'),
+                        'default' => '15',
+                    ]
+                ],
+
                 'crossfade' => [
                     'text',
                     [

app/models/Migration/Version20170414205418.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Migration;
+
+use Doctrine\DBAL\Migrations\AbstractMigration;
+use Doctrine\DBAL\Schema\Schema;
+
+/**
+ * Add request threshold to Station entity.
+ */
+class Version20170414205418 extends AbstractMigration
+{
+    /**
+     * @param Schema $schema
+     */
+    public function up(Schema $schema)
+    {
+        // this up() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('ALTER TABLE station ADD request_threshold INT DEFAULT NULL');
+    }
+
+    public function postUp(Schema $schema)
+    {
+        $this->connection->update('station', [
+            'request_threshold' => 15,
+        ], [
+            'enable_requests' => 1,
+        ]);
+    }
+
+    /**
+     * @param Schema $schema
+     */
+    public function down(Schema $schema)
+    {
+        // this down() migration is auto-generated, please modify it to your needs
+        $this->abortIf($this->connection->getDatabasePlatform()->getName() !== 'mysql', 'Migration can only be executed safely on \'mysql\'.');
+
+        $this->addSql('ALTER TABLE station DROP request_threshold');
+    }
+}

app/models/Repository/StationRequestRepository.php

@@ -58,27 +58,32 @@ class StationRequestRepository extends \App\Doctrine\Repository
         }
 
         // Check the most recent song history.
-        $last_play_threshold = time() - (60 * 60);
+        $last_play_threshold_mins = (int)($station->request_threshold ?? 15);
 
-        try {
-            $last_play_time = $this->_em->createQuery('SELECT sh.timestamp_start 
+        if ($last_play_threshold_mins > 0)
+        {
+            $last_play_threshold = time() - ($last_play_threshold_mins * 60);
+
+            try {
+                $last_play_time = $this->_em->createQuery('SELECT sh.timestamp_start 
                 FROM Entity\SongHistory sh 
                 WHERE sh.song_id = :song_id 
                 AND sh.station_id = :station_id
                 AND sh.timestamp_start >= :threshold
                 ORDER BY sh.timestamp_start DESC')
-                ->setParameter('song_id', $media_item->song_id)
-                ->setParameter('station_id', $station->id)
-                ->setParameter('threshold', $last_play_threshold)
-                ->setMaxResults(1)
-                ->getSingleScalarResult();
-        } catch (\Exception $e) {
-            $last_play_time = 0;
-        }
+                    ->setParameter('song_id', $media_item->song_id)
+                    ->setParameter('station_id', $station->id)
+                    ->setParameter('threshold', $last_play_threshold)
+                    ->setMaxResults(1)
+                    ->getSingleScalarResult();
+            } catch (\Exception $e) {
+                $last_play_time = 0;
+            }
 
-        if ($last_play_time > 0) {
-            $threshold_text = \App\Utilities::timeDifferenceText(time(), $last_play_time);
-            throw new \App\Exception('This song was already played '.$threshold_text.' ago! Wait a while before requesting it again.');
+            if ($last_play_time > 0) {
+                $threshold_text = \App\Utilities::timeDifferenceText(time(), $last_play_time);
+                throw new \App\Exception('This song was already played '.$threshold_text.' ago! Wait a while before requesting it again.');
+            }
         }
 
         if (!$is_authenticated) {

app/models/Station.php

@@ -16,7 +16,9 @@ class Station extends \App\Doctrine\Entity
         $this->automation_timestamp = 0;
         $this->enable_streamers = false;
         $this->enable_requests = false;
+
         $this->request_delay = 5;
+        $this->request_threshold = 15;
 
         $this->needs_restart = false;
 
@@ -146,6 +148,9 @@ class Station extends \App\Doctrine\Entity
     /** @Column(name="request_delay", type="integer", nullable=true) */
     protected $request_delay;
 
+    /** @Column(name="request_threshold", type="integer", nullable=true) */
+    protected $request_threshold;
+
     /** @Column(name="enable_streamers", type="boolean", nullable=false) */
     protected $enable_streamers;