<?php

class Readable2Extension extends Minz_Extension
{
	private $mercHost;
	private $blacklist;

	public function init()
	{

		$this->registerHook('entry_before_insert', array($this, 'fetchStuff'));
		$this->mercHost = getenv('MERCURY_API_URL');
		$this->blacklist = explode(";", getenv('MERCURY_BLACKLIST'));
	}

	public function fetchStuff($entry)
	{
		if (!$this->mercHost) return $entry;
		$entryUrl = $entry->link();
		$entryHost = parse_url($entryUrl)["host"];
		if (!empty($entryHost) && in_array($entryHost, $this->blacklist)) return $entry;

		$host = $this->mercHost . "/parser?url=" . $entryUrl;
		$c = curl_init($host);

		curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
		$result = curl_exec($c);
		$c_status = curl_getinfo($c, CURLINFO_HTTP_CODE);
		curl_close($c);

		if ($c_status !== 200) {
			return $entry;
		}
		$val = json_decode($result, true);
		if (empty($val) || empty($val["content"]) || empty(trim(strip_tags($val["content"])))) {
			return $entry;
		}
		$entry->_content($val["content"]);
		return $entry;
	}
}