Fixed: SABnzbd history retention to allow at least 14 days

(cherry picked from commit a3938d8e0264b48b35f4715cbc15329fb489218a)

Closes #9217

src/NzbDrone.Core.Test/Download/DownloadClientTests/SabnzbdTests/SabnzbdFixture.cs

@@ -452,6 +452,30 @@ namespace NzbDrone.Core.Test.Download.DownloadClientTests.SabnzbdTests
             result.OutputRootFolders.First().Should().Be(fullCategoryDir);
         }
 
+        [TestCase("0")]
+        [TestCase("15d")]
+        public void should_set_history_removes_completed_downloads_false(string historyRetention)
+        {
+            _config.Misc.history_retention = historyRetention;
+
+            var downloadClientInfo = Subject.GetStatus();
+
+            downloadClientInfo.RemovesCompletedDownloads.Should().BeFalse();
+        }
+
+        [TestCase("-1")]
+        [TestCase("15")]
+        [TestCase("3")]
+        [TestCase("3d")]
+        public void should_set_history_removes_completed_downloads_true(string historyRetention)
+        {
+            _config.Misc.history_retention = historyRetention;
+
+            var downloadClientInfo = Subject.GetStatus();
+
+            downloadClientInfo.RemovesCompletedDownloads.Should().BeTrue();
+        }
+
         [TestCase(@"Y:\sabnzbd\root", @"completed\downloads", @"vv", @"Y:\sabnzbd\root\completed\downloads", @"Y:\sabnzbd\root\completed\downloads\vv")]
         [TestCase(@"Y:\sabnzbd\root", @"completed", @"vv", @"Y:\sabnzbd\root\completed", @"Y:\sabnzbd\root\completed\vv")]
         [TestCase(@"/sabnzbd/root", @"completed/downloads", @"vv", @"/sabnzbd/root/completed/downloads", @"/sabnzbd/root/completed/downloads/vv")]

src/NzbDrone.Core/Download/Clients/Sabnzbd/Sabnzbd.cs

@@ -278,7 +278,16 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
                 status.OutputRootFolders = new List<OsPath> { _remotePathMappingService.RemapRemoteToLocal(Settings.Host, category.FullPath) };
             }
 
-            status.RemovesCompletedDownloads = config.Misc.history_retention != "0";
+            if (config.Misc.history_retention.IsNotNullOrWhiteSpace() && config.Misc.history_retention.EndsWith("d"))
+            {
+                int.TryParse(config.Misc.history_retention.AsSpan(0, config.Misc.history_retention.Length - 1),
+                    out var daysRetention);
+                status.RemovesCompletedDownloads = daysRetention < 14;
+            }
+            else
+            {
+                status.RemovesCompletedDownloads = config.Misc.history_retention != "0";
+            }
 
             return status;
         }