From 1b0c1364ad16bf1bfe52c2f2ac9878cee62f2e30 Mon Sep 17 00:00:00 2001
From: Halil Durmus <durmushalil@proton.me>
Date: Thu, 23 Apr 2026 23:42:15 +0300
Subject: [PATCH] refactor(package_info_plus): use win32's built-in structs and
 helpers

---
 .../lib/src/file_attribute.dart               | 39 ++-----------------
 .../lib/src/file_version_info.dart            |  4 +-
 2 files changed, 6 insertions(+), 37 deletions(-)

diff --git a/packages/package_info_plus/package_info_plus/lib/src/file_attribute.dart b/packages/package_info_plus/package_info_plus/lib/src/file_attribute.dart
index 87a9b7e367..5026ea47da 100644
--- a/packages/package_info_plus/package_info_plus/lib/src/file_attribute.dart
+++ b/packages/package_info_plus/package_info_plus/lib/src/file_attribute.dart
@@ -4,23 +4,6 @@ import 'dart:io';
 import 'package:ffi/ffi.dart';
 import 'package:win32/win32.dart';
 
-base class FILEATTRIBUTEDATA extends Struct {
-  @DWORD()
-  external int dwFileAttributes;
-
-  external FILETIME ftCreationTime;
-
-  external FILETIME ftLastAccessTime;
-
-  external FILETIME ftLastWriteTime;
-
-  @DWORD()
-  external int nFileSizeHigh;
-
-  @DWORD()
-  external int nFileSizeLow;
-}
-
 class FileAttributes {
   final String filePath;
 
@@ -43,7 +26,7 @@ class FileAttributes {
     }
 
     final lptstrFilename = filePath.toPcwstr();
-    final lpFileInformation = calloc<FILEATTRIBUTEDATA>();
+    final lpFileInformation = calloc<WIN32_FILE_ATTRIBUTE_DATA>();
 
     try {
       final result = GetFileAttributesEx(
@@ -55,29 +38,15 @@ class FileAttributes {
         throw WindowsException(result.error.toHRESULT());
       }
 
-      final FILEATTRIBUTEDATA fileInformation = lpFileInformation.ref;
+      final WIN32_FILE_ATTRIBUTE_DATA fileInformation = lpFileInformation.ref;
 
       return (
-        creationTime: fileTimeToDartDateTime(fileInformation.ftCreationTime),
-        lastWriteTime: fileTimeToDartDateTime(fileInformation.ftLastWriteTime),
+        creationTime: fileInformation.ftCreationTime.toDateTime(),
+        lastWriteTime: fileInformation.ftLastWriteTime.toDateTime(),
       );
     } finally {
       free(lptstrFilename);
       free(lpFileInformation);
     }
   }
-
-  static DateTime? fileTimeToDartDateTime(FILETIME? fileTime) {
-    if (fileTime == null) return null;
-
-    final high = fileTime.dwHighDateTime;
-    final low = fileTime.dwLowDateTime;
-
-    final fileTime64 = (high << 32) + low;
-
-    final windowsTimeMillis = fileTime64 ~/ 10000;
-    final unixTimeMillis = windowsTimeMillis - 11644473600000;
-
-    return DateTime.fromMillisecondsSinceEpoch(unixTimeMillis);
-  }
 }
diff --git a/packages/package_info_plus/package_info_plus/lib/src/file_version_info.dart b/packages/package_info_plus/package_info_plus/lib/src/file_version_info.dart
index 3ca879eaed..a8e3553cb1 100644
--- a/packages/package_info_plus/package_info_plus/lib/src/file_version_info.dart
+++ b/packages/package_info_plus/package_info_plus/lib/src/file_version_info.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 // Inspired by:
-// - github.com/chromium/chromium/src/base/file_version_info_win.cc
-// - github.com/timsneath/win32/example/filever.dart
+// - github.com/chromium/chromium/blob/main/base/file_version_info_win.cc
+// - github.com/halildurmus/win32/blob/main/examples/filever.dart
 
 import 'dart:ffi';
 import 'dart:io';