Add extension method to work around Swift compiler buffoonery

Author: andrewjl-mux

Sources/MuxUploadSDK/Extensions/FileManager+FileOperations.swift

@@ -0,0 +1,17 @@
+//
+//  FileManager+FileOperations.swift
+//
+
+import Foundation
+
+extension FileManager {
+
+    // Work around Swift compiler not bridging Dictionary
+    // and NSDictionary properly when calling attributesOfItem
+    func fileSizeOfItem(
+        atPath path: String
+    ) throws -> UInt64 {
+        (try attributesOfItem(atPath: path) as NSDictionary)
+            .fileSize()
+    }
+}

Sources/MuxUploadSDK/InternalUtilities/ChunkedFile.swift

@@ -56,7 +56,7 @@ class ChunkedFile {
     func openFile(fileURL: URL) throws {
         if state == nil {
             do {
-                let fileSize = try (fileManager.attributesOfItem(atPath: fileURL.path) as NSDictionary).fileSize()
+                let fileSize = try fileManager.fileSizeOfItem(atPath: fileURL.path)
                 let fileHandle = try FileHandle(forReadingFrom: fileURL)
                 state = State(
                     fileHandle: fileHandle,
@@ -93,9 +93,9 @@ class ChunkedFile {
         }
         let data = try fileHandle.read(upToCount: chunkSize)
 
-        let fileSize = try (fileManager.attributesOfItem(
+        let fileSize = try fileManager.fileSizeOfItem(
             atPath: fileURL.path
-        ) as NSDictionary).fileSize()
+        )
 
         guard let data = data else {
             // Called while already at the end of the file. We read zero bytes, "ending" at the end of the file

Sources/MuxUploadSDK/Upload/ChunkedFileUploader.swift

@@ -88,7 +88,9 @@ class ChunkedFileUploader {
         let task = Task.detached { [self] in
             do {
                 // It's fine if it's already open, that's handled by ignoring the call
-                let fileSize = (try FileManager.default.attributesOfItem(atPath: uploadInfo.videoFile.path) as NSDictionary).fileSize()
+                let fileSize = try FileManager.default.fileSizeOfItem(
+                    atPath: uploadInfo.videoFile.path
+                )
                 let result = try await makeWorker().performUpload()
                 file.close()
 
@@ -240,9 +242,9 @@ fileprivate actor Worker {
         try chunkedFile.seekTo(byte: startingReadCount)
 
         let startTime = Date().timeIntervalSince1970
-        let fileSize = (try FileManager.default.attributesOfItem(
+        let fileSize = try FileManager.default.fileSizeOfItem(
             atPath: uploadInfo.videoFile.path
-        ) as NSDictionary).fileSize()
+        )
 
         let wideFileSize: Int64