job to delete trashed ciphers nightly (#1243)

* job to delete trashed items nightly

* remove script from migration project file

* admin setting for controlling trash deleting dates

src/Admin/Jobs/DeleteCiphersJob.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Threading.Tasks;
+using Bit.Core;
+using Bit.Core.Jobs;
+using Bit.Core.Repositories;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using Quartz;
+
+namespace Bit.Admin.Jobs
+{
+    public class DeleteCiphersJob : BaseJob
+    {
+        private readonly ICipherRepository _cipherRepository;
+        private readonly AdminSettings _adminSettings;
+
+        public DeleteCiphersJob(
+            ICipherRepository cipherRepository,
+            IOptions<AdminSettings> adminSettings,
+            ILogger<DeleteCiphersJob> logger)
+            : base(logger)
+        {
+            _cipherRepository = cipherRepository;
+            _adminSettings = adminSettings?.Value;
+        }
+
+        protected async override Task ExecuteJobAsync(IJobExecutionContext context)
+        {
+            _logger.LogInformation(Constants.BypassFiltersEventId, "Execute job task: DeleteDeletedAsync");
+            var deleteDate = DateTime.UtcNow.AddDays(-30);
+            var daysAgoSetting = (_adminSettings?.DeleteTrashDaysAgo).GetValueOrDefault();
+            if (daysAgoSetting > 0)
+            {
+                deleteDate = DateTime.UtcNow.AddDays(-1 * daysAgoSetting);
+            }
+            await _cipherRepository.DeleteDeletedAsync(deleteDate);
+            _logger.LogInformation(Constants.BypassFiltersEventId, "Finished job task: DeleteDeletedAsync");
+        }
+    }
+}