<?php

Hook::set('y.sitemap', function ($y) use ($site) {
    if ('urlset' !== ($y[0] ?? 0)) {
        return $y;
    }
    if (!is_array($y[1] ?? 0)) {
        return $y;
    }
    foreach ($y[1] as $k => $v) {
        if (!$k || !is_file($k)) {
            continue;
        }
        // Since version 3.0.4, `$k` holds the file path of the item
        $page = new Page($k);
        $y[1][$k][1][] = [
            0 => 'news:news',
            1 => [
                ['news:publication', [
                    ['news:language', $site->language ?? 'en', []],
                    ['news:name', $site->title . ($page->parent ? ': ' . $page->parent->title : ""), []]
                ], []],
                ['news:publication_date', $page->time('%Y-%m-%d'), []],
                ['news:title', $page->title, []]
            ],
            2 => []
        ];
        if ($images = array_unique(array_filter(array_merge((array) $page->images, [$page->image])))) {
            foreach ($images as $image) {
                $y[1][$k][1][] = [
                    0 => 'image:image',
                    1 => [
                        ['image:loc', $image, []]
                    ],
                    2 => []
                ];
            }
        }
        // …
    }
    if (!is_array($y[2] ?? 0)) {
        return $y;
    }
    $y[2]['xmlns:image'] = 'http://www.google.com/schemas/sitemap-image/1.1';
    $y[2]['xmlns:news'] = 'http://www.google.com/schemas/sitemap-news/0.9';
    $y[2]['xmlns:video'] = 'http://www.google.com/schemas/sitemap-video/1.1';
    $y[2]['xmlns:xhtml'] = 'http://www.w3.org/1999/xhtml';
    return $y;
});