From b1c7ff856edf81f3d802e1e679343cd7ed8ea6f9 Mon Sep 17 00:00:00 2001
From: spinline <bilal.karatatr.@gmail.com>
Date: Thu, 5 Feb 2026 21:55:13 +0300
Subject: [PATCH] feat(backend): add toast notification when torrent completes
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- Detects Downloading -> Seeding status transition
- Sends 'Torrent tamamlandı: <name>' notification via SSE
---
 backend/src/diff.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/backend/src/diff.rs b/backend/src/diff.rs
index 07521dc..8c87268 100644
--- a/backend/src/diff.rs
+++ b/backend/src/diff.rs
@@ -1,4 +1,4 @@
-use shared::{AppEvent, Torrent, TorrentUpdate};
+use shared::{AppEvent, NotificationLevel, SystemNotification, Torrent, TorrentStatus, TorrentUpdate};
 
 #[derive(Debug)]
 pub enum DiffResult {
@@ -74,6 +74,14 @@ pub fn diff_torrents(old: &[Torrent], new: &[Torrent]) -> DiffResult {
         if old_t.status != new_t.status {
             update.status = Some(new_t.status.clone());
             has_changes = true;
+
+            // Check for torrent completion: Downloading -> Seeding
+            if old_t.status == TorrentStatus::Downloading && new_t.status == TorrentStatus::Seeding {
+                events.push(AppEvent::Notification(SystemNotification {
+                    level: NotificationLevel::Success,
+                    message: format!("Torrent tamamlandı: {}", new_t.name),
+                }));
+            }
         }
         if old_t.error_message != new_t.error_message {
             update.error_message = Some(new_t.error_message.clone());