<?php
defined('ABSPATH') || exit();
final class APEARI_Media
{
    public static function context(array $ids, bool $requested = false)
    {
        if (count($ids) > 8 || count(array_unique($ids)) !== count($ids)) {
            return new WP_Error('apeari_media', __('Wybierz maksymalnie osiem różnych zdjęć.', 'apeari'), [
                'status' => 422,
            ]);
        }
        $items = [];
        foreach ($ids as $index => $id) {
            if (!is_int($id) || !wp_attachment_is_image($id) || !current_user_can('read_post', $id)) {
                return new WP_Error(
                    'apeari_media',
                    __('Zdjęcie nie jest dostępne w Twojej bibliotece.', 'apeari'),
                    [
                        'status' => 403,
                    ],
                );
            }
            $items['m' . $index] = [
                'id' => $id,
                'url' => wp_get_attachment_url($id),
                'alt' => (string) get_post_meta($id, '_wp_attachment_image_alt', true),
                'title' => get_the_title($id),
                'external' => false,
            ];
        }
        return $items;
    }
    public static function existing_url(string $url, int $id = 0): bool
    {
        $id = $id ?: attachment_url_to_postid($url);
        if (!$id || !wp_attachment_is_image($id) || !current_user_can('read_post', $id)) {
            return false;
        }
        if ($url === wp_get_attachment_url($id)) {
            return true;
        }
        $meta = wp_get_attachment_metadata($id);
        $base = trailingslashit(dirname((string) wp_get_attachment_url($id)));
        foreach ($meta['sizes'] ?? [] as $size) {
            if ($url === $base . $size['file']) {
                return true;
            }
        }
        return false;
    }
    public static function vision(array $ids): array
    {
        return [];
    }
    public static function bind(array $operations, array $media)
    {
        foreach ($operations as &$op) {
            if (isset($op['mediaKey'])) {
                if (!isset($media[$op['mediaKey']])) {
                    return new WP_Error(
                        'apeari_media',
                        __('Wybierz istniejące zdjęcie w bibliotece.', 'apeari'),
                        [
                            'status' => 422,
                        ],
                    );
                }
                $item = $media[$op['mediaKey']];
                $op['attachments'] = [$item];
            }
            if (isset($op['mediaKeys'])) {
                $op['attachments'] = [];
                foreach ($op['mediaKeys'] as $key) {
                    if (!isset($media[$key])) {
                        return new WP_Error('apeari_media', __('Wybierz zdjęcia w bibliotece.', 'apeari'), [
                            'status' => 422,
                        ]);
                    }
                    $item = $media[$key];
                    $op['attachments'][] = $item;
                }
            }
        }
        return $operations;
    }
}