<?php

/**
 * @package     Dotclear
 *
 * @copyright   Olivier Meunier & Association Dotclear
 * @copyright   AGPL-3.0
 */
declare(strict_types=1);

namespace Dotclear\Plugin\tags;

use ArrayObject;
use Dotclear\App;
use Dotclear\Core\Frontend\Utility;
use Dotclear\Helper\File\Path;

/**
 * @brief   The module frontend behaviors.
 * @ingroup tags
 */
class FrontendBehaviors
{
    /**
     * Public init.
     */
    public static function publicPrepend(): string
    {
        // Localized string we find in template
        __("This tag's comments Atom feed");
        __("This tag's entries Atom feed");

        return '';
    }

    /**
     * Prepare tags metadata if necessary (Entries or Comments blocks).
     *
     * @param   string                      $block  The block
     * @param   ArrayObject<string, mixed>  $attr   The attribute
     */
    public static function templateBeforeBlock(string $block, ArrayObject $attr): string
    {
        if (($block === 'Entries' || $block === 'Comments') && isset($attr['tag']) && is_string($attr['tag'])) {
            return
            "<?php\n" .
            "if (!isset(\$params)) { \$params = []; }\n" .
            "if (!isset(\$params['from'])) { \$params['from'] = ''; }\n" .
            "if (!isset(\$params['sql'])) { \$params['sql'] = ''; }\n" .
            "\$params['from'] .= ', '.App::db()->con()->prefix().'meta META ';\n" .
            "\$params['sql'] .= 'AND META.post_id = P.post_id ';\n" .
            "\$params['sql'] .= \"AND META.meta_type = 'tag' \";\n" .
            "\$params['sql'] .= \"AND META.meta_id = '" . App::db()->con()->escapeStr($attr['tag']) . "' \";\n" .
                "?>\n";
        }

        if (empty($attr['no_context']) && ($block === 'Entries' || $block === 'Comments')) {
            return
                '<?php if (App::frontend()->context()->exists("meta") && App::frontend()->context()->meta->rows() && (App::frontend()->context()->meta->meta_type == "tag")) { ' .
                "if (!isset(\$params)) { \$params = []; }\n" .
                "if (!isset(\$params['from'])) { \$params['from'] = ''; }\n" .
                "if (!isset(\$params['sql'])) { \$params['sql'] = ''; }\n" .
                "\$params['from'] .= ', '.App::db()->con()->prefix().'meta META ';\n" .
                "\$params['sql'] .= 'AND META.post_id = P.post_id ';\n" .
                "\$params['sql'] .= \"AND META.meta_type = 'tag' \";\n" .
                "\$params['sql'] .= \"AND META.meta_id = '\".App::db()->con()->escape(App::frontend()->context()->meta->meta_id).\"' \";\n" .
                "} ?>\n";
        }

        return '';
    }

    /**
     * Adds tags tpl path.
     */
    public static function addTplPath(): string
    {
        $theme = App::blog()->settings()->get('system')->getStr('theme', false);
        if ($theme !== '') {
            $tplset           = is_string($tplset = App::themes()->moduleInfo($theme, 'tplset')) ? $tplset : '';
            $default_template = Path::real(My::path()) . DIRECTORY_SEPARATOR . Utility::TPL_ROOT . DIRECTORY_SEPARATOR;

            if ($tplset !== '' && is_dir($default_template . $tplset)) {
                App::frontend()->template()->setPath(App::frontend()->template()->getPath(), $default_template . $tplset);
            } else {
                App::frontend()->template()->setPath(App::frontend()->template()->getPath(), $default_template . App::config()->defaultTplset());
            }
        }

        return '';
    }

    /**
     * Extends tpl:EntryIf attributes.
     *
     * attributes:
     *
     *      has_tags  (0|1)   Entry has an one or several tags (if 1), or not (if 0)
     *
     * @param   string                      $tag        The current tag
     * @param   ArrayObject<string, mixed>  $attr       The attributes
     * @param   string                      $content    The content
     * @param   ArrayObject<int, string>    $if         The conditions stack
     */
    public static function tplIfConditions(string $tag, ArrayObject $attr, string $content, ArrayObject $if): string
    {
        if ($tag === 'EntryIf' && isset($attr['has_tags'])) {
            $sign = (bool) $attr['has_tags'] ? '' : '!';
            $if->append($sign . 'App::meta()->getMetaRecordset(App::frontend()->context()->posts->post_meta,\'tag\')->count() > 0');
        }

        return '';
    }
}
