<?php 


namespace App\Core;

class Logger {
    private string $logFile;
    private int $maxSize = 5242880; 
    private int $maxFiles = 5; 

    public function __construct(string $filename = 'app.log') {
        // Place logs in storage/logs/ at the project root
        $this->logFile = __DIR__ . "/../../storage/logs/" . $filename;
    }

    public function log(string $message, string $level = 'INFO'): void {
        $this->checkRotation();

        $timestamp = date('Y-m-d H:i:s');
        $formattedMessage = "[$timestamp] [$level] $message" . PHP_EOL;

        file_put_contents($this->logFile, $formattedMessage, FILE_APPEND | LOCK_EX);
    }

    private function checkRotation(): void {
        if (file_exists($this->logFile) && filesize($this->logFile) >= $this->maxSize) {
            $this->rotate();
        }
    }

    private function rotate(): void {
        // Delete the oldest file if it exists (e.g., app.log.5)
        $oldestFile = $this->logFile . '.' . $this->maxFiles;
        if (file_exists($oldestFile)) {
            unlink($oldestFile);
        }

        // Shift existing files up (4 becomes 5, 3 becomes 4, etc.)
        for ($i = $this->maxFiles - 1; $i >= 1; $i--) {
            $currentFile = $this->logFile . '.' . $i;
            $nextFile = $this->logFile . '.' . ($i + 1);
            if (file_exists($currentFile)) {
                rename($currentFile, $nextFile);
            }
        }

        // Move the main log file to .1
        rename($this->logFile, $this->logFile . '.1');
        
        // Create a new empty log file
        touch($this->logFile);
        chmod($this->logFile, 0664);
    }

    // Shorthand helpers
    public function info($msg) { $this->log($msg, 'INFO'); }
    public function error($msg) { $this->log($msg, 'ERROR'); }
}

 ?>