Rsync sync log: stream live output from tee'd log file, preserve last run

Plugin/unraid/api/rsync.php

@@ -3,6 +3,48 @@ header('Content-Type: application/json');
 require_once dirname(__DIR__) . '/include/config.php';
 require_once dirname(__DIR__) . '/include/monitor.php';
 
+// ── Live sync log ─────────────────────────────────────────────────────────────
+$action  = $_GET['action'] ?? '';
+if ($action === 'rsync_log') {
+    $lockDir = '/tmp/unraid_locks';
+    $lines   = [];
+    $profile = null;
+    $live    = false;
+    $elapsed = 0;
+
+    // Active sync — read live log
+    foreach (glob("$lockDir/rsync_*.lock") ?: [] as $lf) {
+        $content = trim(@file_get_contents($lf) ?: '');
+        [$pid, $locked_name] = array_pad(explode(':', $content, 2), 2, '');
+        if (!$pid || !file_exists("/proc/$pid")) continue;
+        $profile = preg_replace('/^rsync_/', '', $locked_name ?: basename($lf, '.lock'));
+        $elapsed = time() - (int)filemtime($lf);
+        $liveLog = "$lockDir/rsync_{$profile}.log";
+        $raw     = file_exists($liveLog) ? (file($liveLog, FILE_IGNORE_NEW_LINES) ?: []) : [];
+        $live    = true;
+        $lines   = $raw;
+        break;
+    }
+
+    // No active sync — use most recent last.log
+    if (!$live) {
+        $lastLogs = glob("$lockDir/rsync_*.last.log") ?: [];
+        if ($lastLogs) {
+            usort($lastLogs, fn($a, $b) => filemtime($b) <=> filemtime($a));
+            $lastLog = $lastLogs[0];
+            $profile = preg_replace('/^rsync_(.+)\.last\.log$/', '$1', basename($lastLog));
+            $lines   = file($lastLog, FILE_IGNORE_NEW_LINES) ?: [];
+        }
+    }
+
+    // Strip ANSI escape codes, keep last 200 lines
+    $lines = array_map(fn($l) => preg_replace('/\x1b\[[0-9;]*[mGKHF]/', '', $l), $lines);
+    $lines = array_slice($lines, -200);
+
+    echo json_encode(['ok' => true, 'live' => $live, 'profile' => $profile, 'elapsed' => $elapsed, 'lines' => array_values($lines)]);
+    exit;
+}
+
 $base = vv_rsync_status();
 $vars = vv_conf_vars();