<?php

declare(strict_types=1);

namespace Sentinelo\Core;

// phpcs:disable WordPress.WP.AlternativeFunctions -- backups, snapshots and logs stream files of up to several GB in bounded chunks; WP_Filesystem has no streaming API and may need FTP credentials that a background REST request cannot ask for.

class Logger
{
    private const LEVELS = [
        'debug'   => 0,
        'info'    => 1,
        'warning' => 2,
        'error'   => 3,
    ];

    public static function debug(string $context, string $message): void
    {
        self::log('debug', $context, $message);
    }

    public static function info(string $context, string $message): void
    {
        self::log('info', $context, $message);
    }

    public static function warning(string $context, string $message): void
    {
        self::log('warning', $context, $message);
    }

    public static function error(string $context, string $message): void
    {
        self::log('error', $context, $message);
    }

    private static function log(string $level, string $context, string $message): void
    {
        $configuredLevel = Config::get('log_level', 'info');
        $configuredLevel = self::LEVELS[$configuredLevel] ?? self::LEVELS['info'];
        $currentLevel    = self::LEVELS[$level] ?? self::LEVELS['info'];

        if ($currentLevel < $configuredLevel) {
            return;
        }

        $date     = current_time('Y-m-d H:i:s');
        $fileName = SENTINELO_LOG_DIR . 'sentinelo-' . current_time('Y-m-d') . '.log';
        $line     = sprintf("[%s] [%s] [%s] %s\n", $date, strtoupper($level), $context, $message);

        if (!is_dir(SENTINELO_LOG_DIR)) {
            sentinelo_protect_storage();
            wp_mkdir_p(SENTINELO_LOG_DIR);
        }

        $handle = fopen($fileName, 'ab');
        if ($handle === false) {
            return;
        }

        if (flock($handle, LOCK_EX)) {
            fwrite($handle, $line);
            fflush($handle);
            flock($handle, LOCK_UN);
        }
        fclose($handle);
    }
}