Added isReachable method to test connectivity

- Fixed Cloud provider bug when moving/deleting evicted file

FileProvider.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   #
 
   s.name         = "FileProvider"
-  s.version      = "0.12.7"
+  s.version      = "0.12.8"
   s.summary      = "FileManager replacement for Local and Remote (WebDAV/Dropbox/OneDrive/SMB2) files on iOS and macOS."
 
   # This description is used to generate tags and improve search results.

FileProvider.xcodeproj/project.pbxproj

@@ -597,7 +597,7 @@
 		799396601D48B7BF00086753 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				BUNDLE_VERSION_STRING = 0.12.7;
+				BUNDLE_VERSION_STRING = 0.12.8;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
@@ -627,7 +627,7 @@
 		799396611D48B7BF00086753 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				BUNDLE_VERSION_STRING = 0.12.7;
+				BUNDLE_VERSION_STRING = 0.12.8;
 				CLANG_WARN_BOOL_CONVERSION = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_EMPTY_BODY = YES;

Sources/CloudFileProvider.swift

@@ -197,6 +197,12 @@ open class CloudFileProvider: LocalFileProvider {
         }
     }
 
+    open override func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        dispatch_queue.async {
+            completionHandler(self.fileManager.ubiquityIdentityToken != nil)
+        }
+    }
+
     /**
      Creates a new directory at the specified path asynchronously.
      This will create any necessary intermediate directories.
@@ -609,7 +615,7 @@ open class CloudFileProvider: LocalFileProvider {
     }
 
     /// Returns a pulic url with expiration date, can be shared with other people.
-    open func temporaryLink(to path: String, completionHandler: @escaping ((_ link: URL?, _ attribute: FileObject?, _ expiration: Date?, _ error: Error?) -> Void)) {
+    open func publicLink(to path: String, completionHandler: @escaping ((_ link: URL?, _ attribute: FileObject?, _ expiration: Date?, _ error: Error?) -> Void)) {
         operation_queue.addOperation {
             do {
                 var expiration: NSDate?

Sources/DropboxFileProvider.swift

@@ -129,6 +129,12 @@ open class DropboxFileProvider: FileProviderBasicRemote {
         task.resume()
     }
 
+    open func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        self.storageProperties { total, _ in
+            completionHandler(total > 0)
+        }
+    }
+
     open weak var fileOperationDelegate: FileOperationDelegate?
 }
 

Sources/FileProvider.swift

@@ -95,6 +95,9 @@ public protocol FileProviderBasic: class {
      - Returns: An url, can be used to access to file directly.
     */
     func url(of path: String?) -> URL
+
+    /// Checks the connection to server or permission on local
+    func isReachable(completionHandler: @escaping(_ success: Bool) -> Void)
 }
 
 extension FileProviderBasic {

Sources/LocalFileProvider.swift

@@ -139,6 +139,12 @@ open class LocalFileProvider: FileProvider, FileProviderMonitor, FileProvideUndo
         }
     }
 
+    open func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        dispatch_queue.async {
+            completionHandler(self.fileManager.isReadableFile(atPath: self.baseURL!.path))
+        }
+    }
+
     open weak var fileOperationDelegate : FileOperationDelegate?
 
     @discardableResult
@@ -247,8 +253,9 @@ open class LocalFileProvider: FileProvider, FileProviderMonitor, FileProvideUndo
             undoManager.endUndoGrouping()
         }
 
+        var successfulSecurityScopedResourceAccess = false
+
         let operationHandler: (URL, URL?) -> Void = { source, dest in
-            let successfulSecurityScopedResourceAccess = source.startAccessingSecurityScopedResource()
             do {
                 switch opType {
                 case .create:
@@ -295,18 +302,20 @@ open class LocalFileProvider: FileProvider, FileProviderMonitor, FileProvideUndo
 
         if isCoorinating {
             var intents = [NSFileAccessIntent]()
-
+            successfulSecurityScopedResourceAccess = source.startAccessingSecurityScopedResource()
             switch opType {
-            case .create, .remove, .modify:
+            case .create, .modify:
                 intents.append(NSFileAccessIntent.writingIntent(with: source, options: .forReplacing))
             case .copy:
                 guard let dest = dest else { return nil }
                 intents.append(NSFileAccessIntent.readingIntent(with: source, options: forUploading ? .forUploading : .withoutChanges))
                 intents.append(NSFileAccessIntent.writingIntent(with: dest, options: .forReplacing))
             case .move:
                 guard let dest = dest else { return nil }
-                intents.append(NSFileAccessIntent.writingIntent(with: source, options: .forDeleting))
+                intents.append(NSFileAccessIntent.writingIntent(with: source, options: .forMoving))
                 intents.append(NSFileAccessIntent.writingIntent(with: dest, options: .forReplacing))
+            case .remove:
+                intents.append(NSFileAccessIntent.writingIntent(with: source, options: .forDeleting))
             default:
                 return nil
             }

Sources/OneDriveFileProvide.swift

@@ -132,6 +132,18 @@ open class OneDriveFileProvider: FileProviderBasicRemote {
         task.resume()
     }
 
+    open func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        let url = URL(string: "/drive/root", relativeTo: baseURL)!
+        var request = URLRequest(url: url)
+        request.httpMethod = "HEAD"
+        request.setValue("Bearer \(credential?.password ?? "")", forHTTPHeaderField: "Authorization")
+        let task = session.dataTask(with: request, completionHandler: { (data, response, error) in
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 400
+            completionHandler(status == 200)
+        })
+        task.resume()
+    }
+
     open weak var fileOperationDelegate: FileOperationDelegate?
 }
 

Sources/SMBFileProvider.swift

@@ -44,6 +44,10 @@ class SMBFileProvider: FileProvider, FileProviderMonitor {
         NotImplemented()
     }
 
+    func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        NotImplemented()
+    }
+
     open weak var fileOperationDelegate: FileOperationDelegate?
 
     open func create(folder folderName: String, at atPath: String, completionHandler: SimpleCompletionHandler) -> OperationHandle? {

Sources/WebDAVFileProvider.swift

@@ -156,6 +156,19 @@ open class WebDAVFileProvider: FileProviderBasicRemote {
         })
     }
 
+    open func isReachable(completionHandler: @escaping (Bool) -> Void) {
+        var request = URLRequest(url: baseURL!)
+        request.httpMethod = "PROPFIND"
+        request.setValue("0", forHTTPHeaderField: "Depth")
+        request.setValue("text/xml; charset=\"utf-8\"", forHTTPHeaderField: "Content-Type")
+        request.httpBody = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop><D:quota-available-bytes/><D:quota-used-bytes/></D:prop>\n</D:propfind>".data(using: .utf8)
+        request.setValue(String(request.httpBody!.count), forHTTPHeaderField: "Content-Length")
+        runDataTask(with: request, completionHandler: { (data, response, error) in
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 400
+            completionHandler(status < 300)
+        })
+    }
+
     open weak var fileOperationDelegate: FileOperationDelegate?
 }