<?php

namespace App\Utils;

use Hyperf\Context\ApplicationContext;
use Swoole\Server;
use function Hyperf\Collection\value;

class AppInfoHelper
{
    private static float $startTime = 0;

    public static function initStartTime(): void
    {
        // 避免重复初始化
        if (self::$startTime == 0) {
            self::$startTime = microtime(true);
        }
    }

    public static function getInfo(): array
    {
        return [
            'hyperf_version' => self::getHyperfVersion(),
            'swoole_version' => defined('SWOOLE_VERSION') ? SWOOLE_VERSION : 'N/A',
            'project_path'   => BASE_PATH,
            'start_time'     => self::getStartTime(),
            'uptime'         => self::getUptime(),
        ];
    }

    private static function getHyperfVersion(): string
    {
        $composerFile = BASE_PATH . '/composer.lock';
        if (file_exists($composerFile)) {
            $composer = json_decode(file_get_contents($composerFile), true);
            foreach ($composer['packages'] ?? [] as $pkg) {
                if ($pkg['name'] === 'hyperf/framework') {
                    return $pkg['version'] ?? 'unknown';
                }
            }
        }
        return 'unknown';
    }

    private static function getStartTime(): string
    {
        $start = self::getServerStartTimestamp() ?: self::$startTime;
        return $start ? date('Y-m-d H:i:s', (int)$start) : 'unknown';
    }

    private static function getUptime(): string
    {
        $start = self::getServerStartTimestamp() ?: self::$startTime;
        if (!$start) {
            return 'unknown';
        }
        $seconds = (int)(microtime(true) - $start);
        return self::formatDuration($seconds);
    }

    private static function getServerStartTimestamp(): ?float
    {
        try {
            $container = ApplicationContext::getContainer();
            if ($container->has(Server::class)) {
                $server = $container->get(Server::class);
                return $server->start_time ?? null;
            }
        } catch (\Throwable) {
        }
        return null;
    }

    private static function formatDuration(int $seconds): string
    {
        $d = floor($seconds / 86400);
        $h = floor(($seconds % 86400) / 3600);
        $m = floor(($seconds % 3600) / 60);
        return sprintf('%d天%d小时%d分钟', $d, $h, $m);
    }
}