cleanupOldImageCaches method
Clean up old image cache directories from previous sessions.
Implementation
Future<void> cleanupOldImageCaches() async {
final baseDir = _getImageStoreDir();
final currentSessionId = _getSessionId();
try {
final dir = Directory(baseDir);
if (!await dir.exists()) return;
await for (final sessionDir in dir.list()) {
if (sessionDir is! Directory) continue;
if (sessionDir.path.split('/').last == currentSessionId) continue;
try {
await sessionDir.delete(recursive: true);
_logForDebugging('Cleaned up old image cache: ${sessionDir.path}');
} catch (_) {}
}
// Remove base dir if empty
try {
final remaining = await dir.list().toList();
if (remaining.isEmpty) await dir.delete();
} catch (_) {}
} catch (_) {}
}