<?php 
namespace App\Libraries;

use Throwable;

class CustomTraceLogger
{
    protected $logFile;

    public function __construct()
    {
        $logDir = WRITEPATH . 'trace_logs/';
        if (!is_dir($logDir)) {
            mkdir($logDir, 0777, true);
        }
        $this->logFile = $logDir . 'trace-' . date('Y-m-d') . '.log';
    }

    public function log($direction, $functionName, $lineNo, $params = [])
    {
        try {
            $uuid = get_session_uuid();

            $logEntry = [
                'timestamp' => date('c'),
                'uuid'      => $uuid,
                'direction' => $direction, // IN or OUT
                'function'  => $functionName,
                'line'      => $lineNo,
                'params'    => $params,
            ];

            file_put_contents(
                $this->logFile,
                json_encode($logEntry) . PHP_EOL,
                FILE_APPEND | LOCK_EX
            );
        } catch (Throwable $e) {
            // Don’t break anything if logging fails
        }
    }
}