<?php
namespace app\middleware;

use app\model\RequestTracks;

class DataTracker
{
    public function process($request, \Closure $next)
    {
        // 前置处理
        if($request->path() != 'user/login'){
            return $request;
        }
        $this->logRequestData($request);

        $response = $next($request);

        // 后置处理
//        $this->logResponseData($response);

        return $response;
    }

    protected function logRequestData($request)
    {
        $trackData = [
            'app_id' => 'crm/api',
            'user_id' => $request->user['id'],
            'ip' => $request->getRealIp(),
            'method' => $request->method(),
            'path' => $request->path(),
            'params' => json_encode($request->all()),
            'header' => json_encode($request->header()),
            'uuid' => $this->generateTraceId(),
            'user_agent' => $request->header('user-agent'),
            'referer' => $request->header('referer'),
        ];
        $requestTrack = RequestTracks::create($trackData);
    }

    protected function sendToQueue($data)
    {
        // 使用Redis队列
        try {
            redis()->lpush('track_queue', json_encode($data));
        } catch (\Exception $e) {
            // 失败降级处理
            file_put_contents(
                runtime_path('logs/track_fallback.log'),
                json_encode($data) . PHP_EOL,
                FILE_APPEND
            );
        }
    }

    protected function generateTraceId()
    {
        return sprintf('%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
            mt_rand(0, 0xffff), mt_rand(0, 0xffff),
            mt_rand(0, 0xffff),
            mt_rand(0, 0x0fff) | 0x4000,
            mt_rand(0, 0x3fff) | 0x8000,
            mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
        );
    }
}