From 6e067a28d8527726a2a17045bef0f0e3d3430ed5 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Fri, 23 Apr 2021 17:28:18 +0800
Subject: refactor: Refactor a lot.

---
 .../DatabaseManagement/DatabaseBackupService.cs    | 37 ++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 BackEnd/Timeline/Services/DatabaseManagement/DatabaseBackupService.cs

(limited to 'BackEnd/Timeline/Services/DatabaseManagement/DatabaseBackupService.cs')

diff --git a/BackEnd/Timeline/Services/DatabaseManagement/DatabaseBackupService.cs b/BackEnd/Timeline/Services/DatabaseManagement/DatabaseBackupService.cs
new file mode 100644
index 00000000..c00b5f95
--- /dev/null
+++ b/BackEnd/Timeline/Services/DatabaseManagement/DatabaseBackupService.cs
@@ -0,0 +1,37 @@
+using Microsoft.EntityFrameworkCore;
+using System.Globalization;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using Timeline.Entities;
+
+namespace Timeline.Services.DatabaseManagement
+{
+    public interface IDatabaseBackupService
+    {
+        Task BackupAsync(CancellationToken cancellationToken = default);
+    }
+
+    public class DatabaseBackupService : IDatabaseBackupService
+    {
+        private readonly DatabaseContext _database;
+        private readonly IPathProvider _pathProvider;
+        private readonly IClock _clock;
+
+        public DatabaseBackupService(DatabaseContext database, IPathProvider pathProvider, IClock clock)
+        {
+            _database = database;
+            _pathProvider = pathProvider;
+            _clock = clock;
+        }
+
+        public async Task BackupAsync(CancellationToken cancellationToken = default)
+        {
+            var backupDirPath = _pathProvider.GetDatabaseBackupDirectory();
+            Directory.CreateDirectory(backupDirPath);
+            var fileName = _clock.GetCurrentTime().ToString("yyyy-MM-ddTHH-mm-ss", CultureInfo.InvariantCulture);
+            var path = Path.Combine(backupDirPath, fileName);
+            await _database.Database.ExecuteSqlInterpolatedAsync($"VACUUM INTO {path}", cancellationToken);
+        }
+    }
+}
-- 
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