<?php

namespace App\Libraries;

use App\Traits\MyCrawlerTrait;
use App\Traits\MyWebTrait;
use App\Traits\MyStorage\MyStorageFileTrait;
use Symfony\Component\DomCrawler\Crawler;

class YamapLibrary
{
    use MyWebTrait, MyStorageFileTrait, MyCrawlerTrait;
    private $_debug = false;
    public function __construct(string $host)
    {
        $this->setHostByMyWeb($host);
        $this->setPathByMyStorage(WRITEPATH . "uploads" . DIRECTORY_SEPARATOR . "Yamap");
    }

    final public function getDebug(): bool
    {
        return $this->_debug;
    }
    final public function setDebug(bool $debug): void
    {
        $this->_debug = $debug;
    }

    protected function getCrawler(string $url, string $tag): Crawler
    {
        $response    =  $this->getContentByMyWeb($url);
        if (!$response) {
            throw new \Exception("getCrawler 실패:{$url}");
        }
        return $this->createByMyCrawler($response)->filter($tag);
    }

    protected function getList(
        Crawler $crawler,
        string $item_tag,
        string $item_subject_tag,
        string $item_nickname_tag,
        string $item_nickname_skip,
        array $results = []
    ): array {
        //div.bbs_item를 가진 객체를 찾아서 같은 형식의 객체(sibling)를 배열로 넘김
        $crawler->filter($item_tag)->each(
            function (Crawler $node) use (
                $item_subject_tag,
                &$item_nickname_tag,
                &$item_nickname_skip,
                &$results
            ): void {
                //bbs_item에서 span.g_nickname 객체를 찾아서 작성자가 "관리자" 아닌지 확인 후 Return Bool 
                $nickname = $node->filter($item_nickname_tag)->text();
                log_message("debug", $item_nickname_tag . ":" . $nickname);
                if ($nickname != $item_nickname_skip) {
                    //작성자가 "관리자"가 아니 게시물이면 해당 bbs_item에서 a.list_subject 객체를 찾아서
                    $url = $node->filter($item_subject_tag)->attr("href");
                    $results[] = ['nickname' => $nickname, 'url' => $url];
                }
            }
        );
        return $results;
    }

    protected function download(Crawler $crawler, array $options): void
    {
        log_message("debug", "download:{$options["tag"]},{$options["attr"]}");
        $nodes = $this->getNodesByMyCrawler($crawler, $options);
        foreach ($nodes as $node) {
            $this->downloadByMyWeb($node->attr($options["attr"]), $this->getPathByMyStorage(), $this->getDebug());
        }
    }

    public function execute(): void
    {
        //1. MainPage
        $url   = getenv("yamap.list.url");
        $crawler = $this->getCrawler($url, getenv("yamap.list.tag"));
        $lists = $this->getList(
            $crawler,
            getenv("yamap.list.item.tag"),
            getenv("yamap.list.item.subject.tag"),
            getenv("yamap.list.item.nickname.tag"),
            getenv("yamap.list.item.nickname.skip")
        );
        if (!count($lists)) {
            throw new \Exception("Target URL이 없습니다.");
        }
        //2. TargetPage : div.contents 가진 객체를 찾아서 첫번쨰 요소에서만 참조
        $url  = $this->getDebug() ? getenv("yamap.view.test.url") : $lists[0]["url"];
        $crawler = $this->getCrawler($url, getenv("yamap.view.content.tag"));
        //3. Image
        $this->download($crawler, ["tag" => "img", "attr" => "src"]);
        //4. Video
        $this->download($crawler, ["tag" => "video", "attr" => "src"]);
    }
}