Fix #25

Fix crash bug in network cache

Author: lithium0003

RemoteCloud/RemoteCloud/FileCache.swift

@@ -341,23 +341,23 @@ public class FileCache {
             do {
                 if let items = try context.fetch(fetchrequest) as? [FileCacheItem], items.count > 0 {
                     var delItems = [FileCacheItem]()
-                    self.diskQueue.async {
-                        for item in items {
-                            if delSize > incSize {
-                                break
-                            }
-                            guard let target = item.filename?.uuidString else {
-                                continue
-                            }
+                    for item in items {
+                        if delSize > incSize {
+                            break
+                        }
+                        guard let target = item.filename?.uuidString else {
+                            continue
+                        }
+                        delSize += Int(item.chunkSize)
+                        delItems += [item]
+                        self.diskQueue.async {
                             let target_path = base.appendingPathComponent(String(target.prefix(2)), isDirectory: true).appendingPathComponent(String(target.prefix(4).suffix(2)), isDirectory: true).appendingPathComponent(target)
                             do {
                                 try FileManager.default.removeItem(at: target_path)
                             }
                             catch {
                                 print(error)
                             }
-                            delSize += Int(item.chunkSize)
-                            delItems += [item]
                         }
                     }
                     for item in delItems {

ccViewer/CryptCloudViewer.xcodeproj/project.pbxproj

@@ -748,7 +748,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = ccViewer/ccViewer.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 66;
+				CURRENT_PROJECT_VERSION = 67;
 				DERIVE_MACCATALYST_PRODUCT_BUNDLE_IDENTIFIER = YES;
 				DEVELOPMENT_TEAM = 7A9X38B4YU;
 				"ENABLE_HARDENED_RUNTIME[sdk=macosx*]" = YES;
@@ -783,7 +783,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = ccViewer/ccViewer.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 66;
+				CURRENT_PROJECT_VERSION = 67;
 				DERIVE_MACCATALYST_PRODUCT_BUNDLE_IDENTIFIER = YES;
 				DEVELOPMENT_TEAM = 7A9X38B4YU;
 				"ENABLE_HARDENED_RUNTIME[sdk=macosx*]" = YES;

ccViewer/ccViewer/TableViewControllerSetting.swift

@@ -103,7 +103,8 @@ class TableViewControllerSetting: UITableViewController, UITextFieldDelegate {
                     [NSLocalizedString("Ignore overlay subtiles", comment: ""),
                      NSLocalizedString("Auto select streams", comment: "")],
                     [NSLocalizedString("Current cache size", comment: ""),
-                     NSLocalizedString("Cache limit", comment: "")],
+                     NSLocalizedString("Cache limit", comment: ""),
+                     NSLocalizedString("Purge cache", comment: "")],
                     [NSLocalizedString("View online help", comment: ""),
                      NSLocalizedString("View privacy policy", comment: ""),
                      NSLocalizedString("Version", comment: ""),
@@ -302,6 +303,8 @@ class TableViewControllerSetting: UITableViewController, UITextFieldDelegate {
                     cell.detailTextLabel?.text = NSLocalizedString("Not use", comment: "")
                 }
                 cell.accessoryType = .disclosureIndicator
+            case 2:
+                break;
             default:
                 break
             }
@@ -395,6 +398,8 @@ class TableViewControllerSetting: UITableViewController, UITextFieldDelegate {
                         }
                     }
                     present(contentVC, animated: true, completion: nil)
+                case 2:
+                    deleteCache()
                 default:
                     break
                 }
@@ -466,7 +471,28 @@ class TableViewControllerSetting: UITableViewController, UITextFieldDelegate {
     */
 
     // MARK: - internal
-    
+
+    func deleteCache() {
+        let alert = UIAlertController(title: NSLocalizedString("Purge cache", comment: ""),
+                                      message: NSLocalizedString("Delete all internal cache", comment: ""),
+                                      preferredStyle: .alert)
+        let cancelAction = UIAlertAction(title: NSLocalizedString("Abort", comment: ""), style: .cancel)
+        let defaultAction = UIAlertAction(title: NSLocalizedString("Delete", comment: ""),
+                                          style: .destructive,
+                                          handler:{ action in
+                                            DispatchQueue.global().async {
+                                                CloudFactory.shared.cache.deleteAllCache()
+                                                DispatchQueue.main.asyncAfter(deadline: .now()+2) {
+                                                    self.tableView.reloadData()
+                                                }
+                                            }
+        })
+        alert.addAction(cancelAction)
+        alert.addAction(defaultAction)
+
+        present(alert, animated: true)
+    }
+
     func deleteAllData() {
         let alert = UIAlertController(title: NSLocalizedString("Clear all Auth and Cache", comment: ""),
                                       message: NSLocalizedString("Delete all Auth infomation, Delete all internal cache, Delete all user setting in this app", comment: ""),