1 files changed, 47 insertions, 0 deletions
diff --git a/Sora/Data/Settings/SettingsManager.swift b/Sora/Data/Settings/SettingsManager.swift
index 007c1d8..ff284f3 100644
--- a/Sora/Data/Settings/SettingsManager.swift
+++ b/Sora/Data/Settings/SettingsManager.swift
@@ -83,6 +83,53 @@ class SettingsManager: ObservableObject {  // swiftlint:disable:this type_body_l
         identifier: { $0.id }
       )
       loadBookmarksCache()
+      backupBookmarks()
+    }
+  }
+
+  private func backupBookmarks() {
+    guard
+      let cachesDirectory = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask)
+        .first
+    else { return }
+    let backupDirectory = cachesDirectory.appendingPathComponent("bookmarks_backups")
+    let fileManager = FileManager.default
+
+    try? fileManager.createDirectory(at: backupDirectory, withIntermediateDirectories: true)
+
+    let timestamp = Int(Date().timeIntervalSince1970)
+    let backupFile = backupDirectory.appendingPathComponent("bookmarks_backup_\(timestamp).json")
+
+    if let data = Self.encode(self.bookmarksCache) {
+      try? data.write(to: backupFile)
+    }
+
+    if let files = try? fileManager.contentsOfDirectory(
+      at: backupDirectory,
+      includingPropertiesForKeys: [.contentModificationDateKey],
+      options: .skipsHiddenFiles
+    ) {
+      let jsonBackups = files.filter { file in
+        file.lastPathComponent.hasPrefix("bookmarks_backup_") && file.pathExtension == "json"
+      }
+      let sortedBackups = jsonBackups.sorted { firstFile, secondFile in
+        let firstDate =
+          (try? firstFile.resourceValues(forKeys: [.contentModificationDateKey])
+            .contentModificationDate)
+          ?? .distantPast
+        let secondDate =
+          (try? secondFile.resourceValues(forKeys: [.contentModificationDateKey])
+            .contentModificationDate)
+          ?? .distantPast
+
+        return firstDate > secondDate
+      }
+
+      if sortedBackups.count > 10 {
+        for url in sortedBackups[10...] {
+          try? fileManager.removeItem(at: url)
+        }
+      }
     }
   }