From 76ef8e3ba865c0bcca8eead77e2883b17de578fd Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Sun, 29 Mar 2026 10:33:36 +0000
Subject: [PATCH] perf(harmony): parallelize file copy and delete operations in
 DownloadTask

File deletions and copies in `doPatchFromPpk` were previously executed sequentially using `await` in loops. This commit refactors these operations to use `Promise.all()`, allowing them to execute concurrently and improving overall patch application performance.

Co-authored-by: sunnylqm <615282+sunnylqm@users.noreply.github.com>
---
 harmony/pushy/src/main/ets/DownloadTask.ts | 38 ++++++++++++----------
 1 file changed, 21 insertions(+), 17 deletions(-)

diff --git a/harmony/pushy/src/main/ets/DownloadTask.ts b/harmony/pushy/src/main/ets/DownloadTask.ts
index 72905c88..ea391770 100644
--- a/harmony/pushy/src/main/ets/DownloadTask.ts
+++ b/harmony/pushy/src/main/ets/DownloadTask.ts
@@ -350,23 +350,27 @@ export class DownloadTask {
         );
 
         const { copies, deletes } = obj;
-        for (const [to, from] of Object.entries(copies)) {
-          await fileIo
-            .copyFile(
-              `${params.originDirectory}/${from}`,
-              `${params.unzipDirectory}/${to}`,
-            )
-            .catch(error => {
-              console.error('copy error:', error);
-            });
-        }
-        for (const fileToDelete of Object.keys(deletes)) {
-          await fileIo
-            .unlink(`${params.unzipDirectory}/${fileToDelete}`)
-            .catch(error => {
-              console.error('delete error:', error);
-            });
-        }
+        await Promise.all(
+          Object.entries(copies as Record<string, string>).map(([to, from]) =>
+            fileIo
+              .copyFile(
+                `${params.originDirectory}/${from}`,
+                `${params.unzipDirectory}/${to}`,
+              )
+              .catch(error => {
+                console.error('copy error:', error);
+              }),
+          ),
+        );
+        await Promise.all(
+          Object.keys(deletes as Record<string, string>).map(fileToDelete =>
+            fileIo
+              .unlink(`${params.unzipDirectory}/${fileToDelete}`)
+              .catch(error => {
+                console.error('delete error:', error);
+              }),
+          ),
+        );
         continue;
       }
       if (fn === 'bundle.harmony.js.patch') {