<?php

namespace App\Libraries\MyCrawler;

use App\Libraries\CommonLibrary;
use Symfony\Component\DomCrawler\Crawler;
use App\Traits\FileTrait;

abstract class MyCrawler extends CommonLibrary
{
    use FileTrait;
    private $_mySocket = null;
    protected function __construct($mySocket)
    {
        parent::__construct();
        $this->_mySocket = $mySocket;
    }
    abstract protected function getMyStorage();
    abstract protected function detail_page(int $cnt, array $listInfo): void;
    final protected function getMySocket()
    {
        if ($this->_mySocket === null) {
            throw new \Exception("Socket이 지정되지 않았습니다.");
        }
        return $this->_mySocket;
    }
    final protected function getSelector(string $content, string $tag): Crawler
    {
        $crawler = new Crawler($content);
        if ($this->getDebug()) {
            log_message("debug", sprintf(
                "\n---------%s----------\ntag:%s\n%s\n-------------------\n",
                __FUNCTION__,
                $tag,
                $content
            ));
            exit;
        }
        return $crawler->filter($tag);
    }

    //--------미디어 URL관련------
    private function getMediaUrlsByMediaType(string $media_type, Crawler $selector, array $options, array $urls = []): array
    {
        $urls[$media_type] = [];
        $selector->filter($options["tag"])->each(
            function (Crawler $node) use (&$media_type, &$options, &$urls): void {
                $url = $node->attr($options["attr"]);
                log_message("debug", __FUNCTION__ . "-> {$media_type}[{$options["attr"]}]:{$url}");
                if (!is_null($url)) {
                    $urls[$media_type][] = $url;
                }
            }
        );
        return $urls;
    }
    //detailPage의 이미지나영상데이터가 있으면 URL과MediaType을 가져온다
    final protected function getMediaUrls(string $response, string $tag, array $listInfo): array
    {
        $selector = $this->getSelector($response, $tag);
        log_message("debug", "\n-----------detailPage Tag: {$tag}---------------\n{$selector->html()}\n---------------------------\n");
        $urls = $this->getMediaUrlsByMediaType("image", $selector, ["tag" => "img", "attr" => "src"]);
        $urls = $this->getMediaUrlsByMediaType("video", $selector, ["tag" => "video", "attr" => "src"], $urls);
        log_message("debug", "\n-------------------------\n" . var_export($urls, true) . "\n-----------------------\n");
        log_message("notice",  "-----------" . __FUNCTION__ . " 작업완료--------");
        return array($listInfo, $urls);
    }

    //--------미디어 관련-------
    private function media_save(int $file_sequence, string $media_type, string $file_name, string $content): mixed
    {
        log_message("debug", __FUNCTION__ . " 원본파일 {$file_name} 작업 시작");
        $this->getMyStorage()->setOriginName($file_name);
        $this->getMyStorage()->setOriginContent($content);
        $this->getMyStorage()->setOriginType($media_type);
        $this->getMyStorage()->setOriginSequence($file_sequence);
        return $this->getMyStorage()->save();
    }
    //Yamap ViewPage의 이미지나영상데이터가 있으면 Dodownload 한다.
    private function media_download(string $media_type, string $url): array
    {
        $file_names = explode('/', $url);
        if (!is_array($file_names) || !count($file_names)) {
            throw new \Exception("URL이 파일명 형식이 아닙니다 : " . $this->getMySocket()->getHost() . $url);
        }
        $file_name = array_pop($file_names);
        $temps = explode(".", $file_name);
        $file_ext = array_pop($temps);
        if (!$this->isFileType_FileTrait($file_ext, $media_type)) {
            throw new \Exception("파일명 형식이 {$media_type}가 아닙니다");
        }
        $content = $this->getMySocket()->getContent($url);
        log_message("notice", "{$file_name} 파일이 다운로드되었습니다!");
        return array($file_name, $content);
    }
    final protected function media_process(array $media_urls): array
    {
        log_message("debug", var_export($media_urls, true));
        $file_sequence = 1;
        $storages = []; //CreateBoard에서 사용을 위해 DetailPage마다 초기화
        // log_message("debug", var_export($urls, true));
        foreach ($media_urls as $media_type => $urls) {
            foreach ($urls as $url) {
                try {
                    list($file_name, $content) = $this->media_download($media_type, $url);
                    $storages[] = $this->media_save($file_sequence, $media_type, $file_name, $content);
                    $file_sequence++;
                    log_message("notice", __FUNCTION__ . " MediaType->{$media_type} 작업 완료");
                } catch (\Exception $e) {
                    log_message("warning", sprintf(
                        "\n---%s mediaType->%s 오류---\n%s\n-----------------------------------------\n",
                        __FUNCTION__,
                        $media_type,
                        $e->getMessage()
                    ));
                }
            }
        }
        return $storages;
    }
    protected function main_process(int $max_limit, array $listInfos): void
    {
        //Limit가 0이면 $listInfos 갯수만큼 다하고, LIMIT 갯수 혹은 item의 갯수중 작은수만큼 한다.
        if ($max_limit) {
            $max_limit = count($listInfos) <= $max_limit ? count($listInfos) : $max_limit;
        } else {
            $max_limit = count($listInfos);
        }
        $total = count($listInfos);
        $i = 1;
        foreach ($listInfos as $listInfo) {
            if ($i <= $max_limit) {
                try {
                    log_message("notice", "게시물 {$i}번째/{$total}개중 {$listInfo["nickname"]} 작업시작");
                    //listInfo는 title,작성자,작성시간등등의 정보를 가지고 있어 detail_page 처리 안에서 바뀔 수 있으므로 다시 반환 받는다.
                    $this->detail_page($i, $listInfo);
                    log_message("notice", "게시물 {$i}번째/{$total}개중 {$listInfo["nickname"]} 작업완료.");
                    $i++;
                } catch (\Exception $e) {
                    log_message("warning", sprintf(
                        "\n---%s 오류---\n%s\n-----------------------------------------\n",
                        __FUNCTION__,
                        $e->getMessage()
                    ));
                }
            }
        }
    }
}