<?php

declare (strict_types = 1);

namespace app\middleware;

use Closure;
use think\Request;
use think\Response;
use think\facade\Event;
use think\response\Json;
use app\utils\StringsUtil;
use think\facade\Log as FacadeLog;

class Log
{
    /**
     * @var string
     */
    public static $logID = '';

    /**
     * 处理请求
     *
     * @param  Request    $request
     * @param  Closure    $next
     * @return Response
     */
    public function handle(Request $request, Closure $next)
    {
        $logId = $request->header('x-request-id');
        if (empty($logId)) {
            $logId = StringsUtil::uuid();
        }
        self::$logID = $logId;

        Event::listen(
            'think\event\LogWrite',
            function ($event) use ($logId) {
                foreach ($event->log as $logLevel => &$logs) {
                    foreach ($logs as &$log) {
                        if (is_string($log)) {
                            $log = 'trackID:' . $logId . '|' . $log;
                        } elseif (is_array($log)) {
                            $log['trackID'] = $logId;
                        }
                    }
                }
            }
        );
        if (strpos(\think\facade\Request::url(), '/monitor') !== false) {
            return \response("");
        }
        $startTime = microtime(true);
        FacadeLog::info(
            'request_begin|IP:' . get_client_ip(0) . '|UA:' . $_SERVER["HTTP_USER_AGENT"] . '|get:' . json_encode(
                $request->get(),
                JSON_UNESCAPED_UNICODE
            ) . '|post:' . json_encode(
                $request->post(),
                JSON_UNESCAPED_UNICODE
            ) . '|URI:' . $request->url()
        );

        /**
         * @var Response $response
         */
        $response = $next($request);
        $endTime = microtime(true);
        $spendTime = round($endTime - $startTime, 4);
        $data = '';
        if ($response instanceof Json) {
            $data = $response->getData();
            if (!is_string($data)) {
                $data = json_encode($data, JSON_UNESCAPED_UNICODE);
            }
        }
        FacadeLog::info('request_end|spendTime:' . $spendTime . '|response:' . $data);
        return $response;
    }
}