<?php

/**
 * PIECreator01 is a FeedCreator that implements the emerging PIE specification,
 * as in http://intertwingly.net/wiki/pie/Syntax.
 *
 * @deprecated
 * @since   1.3
 * @author  Scott Reynen <scott@randomchaos.com> and Kai Blankenhorn <kaib@bitfolge.de>
 */
class PIECreator01 extends FeedCreator
{

    /**
     * PIECreator01 constructor.
     */
    public function __construct()
    {
        $this->encoding = "utf-8";
    }

    /** @inheritdoc */
    public function createFeed()
    {
        $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
        $feed .= $this->_createStylesheetReferences();
        $feed .= "<feed version=\"0.1\" xmlns=\"http://example.com/newformat#\">\n";
        $feed .= "    <title>".FeedCreator::iTrunc(htmlspecialchars($this->title), 100)."</title>\n";
        $feed .= "    <subtitle>".$this->getDescription()."</subtitle>\n";
        $feed .= "    <link>".$this->link."</link>\n";
        for ($i = 0; $i < count($this->items); $i++) {
            $feed .= "    <entry>\n";
            $feed .= "        <title>".FeedCreator::iTrunc(
                    htmlspecialchars(strip_tags($this->items[$i]->title)),
                    100
                )."</title>\n";
            $feed .= "        <link>".htmlspecialchars($this->items[$i]->link)."</link>\n";
            $itemDate = new FeedDate($this->items[$i]->date);
            $feed .= "        <created>".htmlspecialchars($itemDate->iso8601())."</created>\n";
            $feed .= "        <issued>".htmlspecialchars($itemDate->iso8601())."</issued>\n";
            $feed .= "        <modified>".htmlspecialchars($itemDate->iso8601())."</modified>\n";
            $feed .= "        <id>".htmlspecialchars($this->items[$i]->guid)."</id>\n";
            if ($this->items[$i]->author != "") {
                $feed .= "        <author>\n";
                $feed .= "            <name>".htmlspecialchars($this->items[$i]->author)."</name>\n";
                if ($this->items[$i]->authorEmail != "") {
                    $feed .= "            <email>".$this->items[$i]->authorEmail."</email>\n";
                }
                $feed .= "        </author>\n";
            }
            $feed .= "        <content type=\"text/html\" xml:lang=\"en-us\">\n";
            $feed .= "            <div xmlns=\"http://www.w3.org/1999/xhtml\">".$this->items[$i]->getDescription(
                )."</div>\n";
            $feed .= "        </content>\n";
            $feed .= "    </entry>\n";
        }
        $feed .= "</feed>\n";

        return $feed;
    }
}
