From 0bad8b0c9877f92eeeb550654f1ea51a71a085e4 Mon Sep 17 00:00:00 2001
From: Nick Bourdakos <bourdakos@google.com>
Date: Thu, 28 Aug 2025 06:37:51 -0700
Subject: [PATCH] Ensure parent directories exist before creating output files
 on Apple

PiperOrigin-RevId: 800443625
---
 internal/platform/implementation/apple/BUILD       |  1 +
 internal/platform/implementation/apple/platform.mm | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/internal/platform/implementation/apple/BUILD b/internal/platform/implementation/apple/BUILD
index ca58ac8a..19b97168 100644
--- a/internal/platform/implementation/apple/BUILD
+++ b/internal/platform/implementation/apple/BUILD
@@ -96,6 +96,7 @@ objc_library(
         "//third_party/apple_frameworks:Network",
         "@nlohmann_json//:json",
         "//internal/base:file_path",
+        "//internal/base:files",
         "//internal/platform:base",
         "//internal/platform/implementation:comm",
         "//internal/platform/implementation:platform",
diff --git a/internal/platform/implementation/apple/platform.mm b/internal/platform/implementation/apple/platform.mm
index c36d73e2..974a7ed5 100644
--- a/internal/platform/implementation/apple/platform.mm
+++ b/internal/platform/implementation/apple/platform.mm
@@ -20,6 +20,7 @@
 #include <memory>
 
 #include "absl/strings/string_view.h"
+#include "internal/base/files.h"
 #include "internal/platform/implementation/apple/awdl.h"
 #include "internal/platform/implementation/apple/atomic_boolean.h"
 #include "internal/platform/implementation/apple/atomic_uint32.h"
@@ -27,6 +28,7 @@
 #include "internal/platform/implementation/apple/condition_variable.h"
 #include "internal/platform/implementation/apple/count_down_latch.h"
 #include "internal/platform/implementation/apple/device_info.h"
+#import "internal/platform/implementation/apple/Log/GNCLogger.h"
 #import "internal/platform/implementation/apple/multi_thread_executor.h"
 #include "internal/platform/implementation/apple/mutex.h"
 #include "internal/platform/implementation/apple/preferences_manager.h"
@@ -134,6 +136,15 @@ std::unique_ptr<OutputFile> ImplementationPlatform::CreateOutputFile(PayloadId p
 }
 
 std::unique_ptr<OutputFile> ImplementationPlatform::CreateOutputFile(const std::string& file_path) {
+  FilePath path{file_path};
+  FilePath folder_path = path.GetParentPath();
+  // Verifies that a path is a valid directory.
+  if (!Files::DirectoryExists(folder_path)) {
+    if (!Files::CreateDirectories(folder_path)) {
+      GNCLoggerError(@"Failed to create directory: %@", @(folder_path.ToString().c_str()));
+      return nullptr;
+    }
+  }
   return shared::IOFile::CreateOutputFile(file_path);
 }