<?php

namespace App\Libraries\MyCrawler;

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

abstract class MyCrawlerLibrary extends CommonLibrary
{
    protected function __construct()
    {
        parent::__construct();
    }
    abstract public function getMySocket();
    abstract public function getMyStorage();
    abstract public function execute(): array;

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

    final protected function getNodes(Crawler $crawler, array $options, $nodes = []): array
    {
        $crawler->filter($options["tag"])->each(
            function (Crawler $node) use (&$options, &$nodes): void {
                log_message("debug", sprintf("getNode-> %s", $options["tag"]));
                $nodes[] = $node;
            }
        );
        return $nodes;
    }

    final protected function download(Crawler $crawler, array $options): array
    {
        $downloadInfos = [];
        $nodes = $this->getNodes($crawler, $options);
        foreach ($nodes as $node) {
            $original = $node->attr($options["attr"]);
            list($fileName, $content) = $this->getMySocket()->download($original);
            $this->getMyStorage()->setFileName($fileName);
            if (!$this->getMyStorage()->save($content)) {
                continue;
            }
            $downloadInfos[] = [
                "orignal" => $node->html(),
                "path" => $this->getMyStorage()->getPath(),
                "fileName" => $fileName,
            ];
        }
        return $downloadInfos;
    }
}