From 27fd87d5d54ccfa4686c2054360c9700499878de Mon Sep 17 00:00:00 2001
From: Warren <warren@momentry.ddns.net>
Date: Sun, 17 May 2026 02:29:00 +0800
Subject: [PATCH] fix: Fix string slice syntax error in UUID generation
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Fixed compilation error:
- hex[0..32].to_string() → hex.chars().take(32).collect::<String>()
- Rust doesn't allow direct slicing on String

UUID generation method:
SHA256(path|filename|mac|mtime).chars().take(32)

Properties:
- path: absolute file path
- filename: uploaded filename
- MAC: from ifconfig en0 (ether)
- mtime: file modification time (milliseconds)

Result:
- Deterministic UUID (same file = same UUID)
- 32-char hex string
- Matches momentry system format

Files:
- src/server.rs (line 827: chars().take(32).collect())
---
 src/server.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/server.rs b/src/server.rs
index 2242eb9..e3a3f84 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -827,7 +827,7 @@ async fn upload_file(
     hasher.update(input.as_bytes());
     let hash = hasher.finalize();
     let hex = format!("{:x}", hash);
-    let file_uuid = hex[0..32].to_string();
+    let file_uuid = hex.chars().take(32).collect::<String>();
 
     // Save to database (user-specific SQLite)
     let db_path = crate::filetree::FileTree::user_db_path(&user_id);