<?php

namespace app\config;


class Config
{
    /**
     * @var int 普通日志轮转时间默认 14 天
     */
    public int $logRotationTimeByDay {
        get => $this->logRotationTimeByDay;
    }

    /**
     * @var int 错误日志轮转时间默认 30 天
     */
    public int $errorLogRotationTimeByDay {
        get => $this->errorLogRotationTimeByDay;
    }

    public DatabaseConfig $database {
        get => $this->database;
    }

    public bool $dbDebug {
        get => $this->dbDebug;
    }

    /**
     * 方式 类:方法
     * 方式 类
     * 方式 :方法
     * 允许使用正则 * 作为通配符
     * @var array 日志过滤器
     */
    public array $logFilter {
        get => $this->logFilter;
    }

    public int $logLevel {
        get => $this->logLevel;
    }

    /**
     * 阻断模式
     */
    public bool $blockMode {
        get => $this->blockMode;
    }

    /**
     * TCP Server 进程数量
     */
    public int $tcpServerProcessNum = 1 {
        get => $this->tcpServerProcessNum;
    }

    /**
     * TCP_SERVER_PORT
     */
    public int $tcpServerPort = 50000 {
        get => $this->tcpServerPort;
    }

    private function __construct()
    {
        $this->database = new DatabaseConfig();
        $this->dbDebug = self::getBoolEnv('DB_DEBUG');
        $this->logFilter = self::getStringArrayEnv('LOG_FILTER', []);
        $this->logLevel = match (strtoupper(self::getStringEnv('LOG_LEVEL', 'DEBUG'))) {
            'INFO' => \Monolog\Logger::INFO,
            'WARNING' => \Monolog\Logger::WARNING,
            'ERROR' => \Monolog\Logger::ERROR,
            'ALERT' => \Monolog\Logger::ALERT,
            'EMERGENCY' => \Monolog\Logger::EMERGENCY,
            'CRITICAL' => \Monolog\Logger::CRITICAL,
            'NOTICE' => \Monolog\Logger::NOTICE,
            default => \Monolog\Logger::DEBUG
        };
        $this->tcpServerPort = self::getIntEnv('TCP_SERVER_PORT', 50000);
        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' && $this->tcpServerProcessNum > 1) {
            $this->tcpServerProcessNum = 1;
            echo "Warning: TCP_SERVER_PROCESS_NUM set to 1 on Windows.\n";
        }
    }

    private function __clone()
    {
    }

    public static function getBoolEnv($name, $default = false)
    {
        $value = getenv($name);
        return empty($value) ? $default : filter_var($value, FILTER_VALIDATE_BOOLEAN);
    }

    public static function getIntEnv($name, $default = 0)
    {
        $value = getenv($name);
        return empty($value) ? $default : (int)$value;
    }

    public static function getStringEnv($name, $default = null)
    {
        $value = getenv($name);
        return empty($value) ? $default : $value;
    }

    private static ?Config $instance = null;

    public static function getInstance(): Config
    {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    private static function getStringArrayEnv(string $string, array $array): array
    {
        $value = getenv($string);
        return empty($value) ? $array : array_map('trim', explode(';', $value));
    }

}