feat: Add SecureEncoder support to PFFileObject

Parse/Parse/Source/PFFileObject.h

@@ -31,7 +31,14 @@ __attribute__((unavailable("PFFile was renamed to PFFileObject. Please use it in
  `PFFileObject` representes a file of binary data stored on the Parse servers.
  This can be a image, video, or anything else that an application needs to reference in a non-relational way.
  */
-@interface PFFileObject : NSObject
+@interface PFFileObject : NSObject <NSSecureCoding>
+
+/**
+ Class property required for NSSecureCoding: also it must return YES
+
+ @return Whether the class supports NSSecureCoding..
+ */
++ (BOOL)supportsSecureCoding;
 
 ///--------------------------------------
 #pragma mark - Creating a PFFileObject

Parse/Parse/Source/PFFileObject.m

@@ -51,6 +51,8 @@
 
 @synthesize stagedFilePath = _stagedFilePath;
 
++ (BOOL)supportsSecureCoding { return YES; }
+
 ///--------------------------------------
 #pragma mark - Public
 ///--------------------------------------
@@ -503,6 +505,24 @@
     return [Parse _currentManager].coreManager.fileController;
 }
 
+#pragma mark - NSSecureCoding
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+    PFEncoder *encoder = [PFEncoder objectEncoder];
+    __autoreleasing NSError *error;
+    NSDictionary *dict = [encoder encodeObject:self error:&error];
+    if (dict && error == nil) {
+        [coder encodeObject:dict];
+    }
+}
+
+- (nullable instancetype)initWithCoder:(NSCoder *)coder {
+    NSDictionary *dict = [coder decodeObject];
+    PFDecoder *decoder = [PFDecoder objectDecoder];
+    PFFileObject *fileObject = [decoder decodeObject:dict];
+    return (fileObject.name && fileObject.url) ? fileObject : nil;
+}
+
 @end
 
 ///--------------------------------------