<?php

namespace App\Libraries;

use Symfony\Component\DomCrawler\Crawler;

//Yamap
// define('YAMAP', [
//     'host' => ['url' => getenv('yamap.host.url')],
//     'list' => [
//         'url' => getenv('yamap.list.url'),
//         'tag' => getenv('yamap.list.tag'),
//         'item' =>  [
//             'tag' => getenv('yamap.list.item.tag'),
//             'subject' => [
//                 'tag' => getenv('yamap.list.item.subject.tag')
//             ],
//             'nickname' =>  [
//                 'tag' => getenv('yamap.list.item.nickname.tag'),
//                 'except' => getenv('yamap.list.item.nickname.except'),
//             ],
//         ],
//     ],
//     'view' => [
//         'tag' => getenv('yamap.view.tag'),
//         'content' => [
//             'tag' => getenv('yamap.view.content.tag'),
//         ],
//         'test' => [
//             'url' => getenv('yamap.view.test.url'),
//         ]
//     ],
// ]);

class YamapLibrary extends CommonLibrary
{
    private $_myWeb = null;
    private $_myStorage = null;
    private $_myCrawler = null;
    public function __construct()
    {
        parent::__construct();
    }

    public function getMyWeb()
    {
        if ($this->_myWeb === null) {
            throw new \Exception("MyWeb Library가 정의되지 않았습니다.");
        }
        return $this->_myWeb;
    }
    public function setMyWeb($myWeb)
    {
        $this->_myWeb = $myWeb;
    }

    public function getMyStorage()
    {
        if ($this->_myStorage === null) {
            throw new \Exception("MyStorage Library가 정의되지 않았습니다.");
        }
        return $this->_myStorage;
    }
    public function setMyStorage($myStorage)
    {
        $this->_myStorage = $myStorage;
    }
    public function getMyCrawler()
    {
        if ($this->_myWeb === null) {
            throw new \Exception("MyCrawler Library가 정의되지 않았습니다.");
        }
        return $this->_myCrawler;
    }
    public function setMyCrawler($myCrawler)
    {
        $this->_myCrawler = $myCrawler;
    }

    private function getCrawler(string $url, string $tag): Crawler
    {
        $response    =  $this->getMyWeb()->getContent($url);
        if (!$response) {
            throw new \Exception("getCrawler 실패:{$url}");
        }
        return $this->getMyCrawler()->create($response)->filter($tag);
    }

    private function download_process(Crawler $crawler, array $options): array
    {
        $mediaInfos = [];
        log_message("debug", "download:{$options["tag"]},{$options["attr"]}");
        $nodes = $this->getMyCrawler()->getNodes($crawler, $options);
        foreach ($nodes as $node) {
            $original = $node->attr($options["attr"]);
            list($fileName, $content) = $this->getMyWeb()->download($original);
            $this->getMyStorage()->setFileName($fileName);
            if (!$this->getMyStorage()->save($content)) {
                continue;
            }
            $mediaInfos[] = [
                "orignal" => $node->html(),
                "path" => $this->getMyStorage()->getPath(),
                "fileName" => $fileName,
                "content" => $content
            ];
        }
        return $mediaInfos;
    }

    public function mainPage(): array
    {
        $url   = getenv("yamap.list.url");
        $crawler = $this->getCrawler($url, getenv("yamap.list.tag"));
        $item_tag = getenv("yamap.list.item.tag");
        $item_subject_tag = getenv("yamap.list.item.subject.tag");
        $item_nickname_tag = getenv("yamap.list.item.nickname.tag");
        $item_nickname_except = getenv("yamap.list.item.nickname.except");

        $lists = [];
        //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,
                &$item_nickname_except,
                &$lists
            ): 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_except) {
                    //작성자가 "관리자"가 아니 게시물이면 해당 bbs_item에서 a.list_subject 객체를 찾아서
                    $url = $node->filter($item_subject_tag)->attr("href");
                    $lists[] = ['nickname' => $nickname, 'url' => $url];
                }
            }
        );
        if (!count($lists)) {
            throw new \Exception("Target URL이 없습니다.");
        }
        return array($lists[0]["nickname"], $lists[0]["url"]);
    }

    public function detailPage($url): array
    {
        $crawler = $this->getCrawler($url, getenv("yamap.view.content.tag"));
        $mediaTags = [];
        //3. Image 처리
        $images = $this->download_process($crawler, ["tag" => "img", "attr" => "src"]);
        foreach ($images as $image) {
            if ($this->isContainsHttpOrHttps($image['orignal'])) {
                $mediaTags[] = $images['orignal'];
            } else {
                $mediaTags[] = sprintf("<img src=\"%s/%s\" alt=\"%s\">", $image["path"], $image["fileName"], $image["fileName"]);
            };
        }

        //4. Video(mp4) 처리
        $videos = $this->download_process($crawler, ["tag" => "video", "attr" => "src"]);
        foreach ($videos as $video) {
            if ($this->isContainsHttpOrHttps($video['orignal'])) {
                $mediaTags[] = $videos['orignal'];
            } else {
                $mediaTags[] = sprintf("<video src=\"%s/%s\" alt=\"%s\">", $video["path"], $video["fileName"], $video["fileName"]);
            };
        }
        $mediaInfos = array_merge($images, $videos);
        log_message("debug", "-----mediaInfos-----");
        foreach ($mediaInfos as $mediaInfo) {
            log_message("debug", "fileName: " . $mediaInfo["path"] . DIRECTORY_SEPARATOR . $mediaInfo['fileName']);
        }
        log_message("debug", "-----mediaTags-----");
        log_message("debug", var_export($mediaTags, true));
        return array($mediaInfos, $mediaTags);
    }

    public function build(): array
    {
        //1. 해당사이트 MainPage 처리
        if ($this->getDebug()) {
            $nickname   = getenv("yamap.view.test.nickname");
            $detail_url = getenv("yamap.view.test.url");
        } else {
            list($nickname, $detail_url) = $this->mainPage();
        }
        //2. DetailPage 처리 : bbs_view > div.contents 가진 객체를 찾아서 처리        
        list($mediaInfos, $mediaTags) = $this->detailPage($detail_url);
        return array($nickname, $mediaInfos, $mediaTags);
    }
}