<?php
/**
 * Plugin Webcode: Show webcode (Css, HTML) in a iframe
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Nicolas GERARD
 */

// must be run within Dokuwiki
use ComboStrap\PluginUtility;
use ComboStrap\XmlTagProcessing;

require_once(__DIR__ . '/../vendor/autoload.php');

/**
 * All DokuWiki plugins to extend the parser/rendering mechanism
 * need to inherit from this class
 *
 * Format
 *
 * syntax_plugin_PluginName_PluginComponent
 */
class syntax_plugin_combo_unit extends DokuWiki_Syntax_Plugin
{


    const TAG = "unit";


    private static function getTag()
    {
        return PluginUtility::getTagName(get_called_class());
    }

    /*
     * What is the type of this plugin ?
     * This a plugin categorization
     * This is only important for other plugin
     * See @getAllowedTypes
     */
    public function getType()
    {
        return 'formatting';
    }


    // Sort order in which the plugin are applied
    public function getSort()
    {
        return 168;
    }

    /**
     *
     * @return array
     * The plugin type that are allowed inside
     * this node (All !)
     * Otherwise the node that are in the matched content are not processed
     */
    function getAllowedTypes()
    {
        return array('container', 'formatting', 'substition', 'protected', 'disabled', 'paragraphs');
    }

    public function accepts($mode)
    {

        return syntax_plugin_combo_preformatted::disablePreformatted($mode);

    }

    /**
     * Handle the node
     * @return string
     * See
     * https://www.dokuwiki.org/devel:syntax_plugins#ptype
     */
    function getPType()
    {
        return 'block';
    }

    // This where the addEntryPattern must bed defined
    public function connectTo($mode)
    {
        // This define the DOKU_LEXER_ENTER state
        $pattern = XmlTagProcessing::getContainerTagPattern(self::TAG);
        $this->Lexer->addEntryPattern($pattern, $mode, 'plugin_' . PluginUtility::PLUGIN_BASE_NAME . '_' . $this->getPluginComponent());

    }

    public function postConnect()
    {
        // We define the DOKU_LEXER_EXIT state
        $this->Lexer->addExitPattern('</' . self::TAG . '>', 'plugin_' . PluginUtility::PLUGIN_BASE_NAME . '_' . $this->getPluginComponent());

    }


    /**
     * Handle the match
     * You get the match for each pattern in the $match variable
     * $state says if it's an entry, exit or match pattern
     *
     * This is an instruction block and is cached apart from the rendering output
     * There is two caches levels
     * This cache may be suppressed with the url parameters ?purge=true
     * @param $match
     * @param $state
     * @param $pos
     * @param Doku_Handler $handler
     * @return array
     */
    public function handle($match, $state, $pos, Doku_Handler $handler): array
    {
        switch ($state) {

            case DOKU_LEXER_ENTER :

                $parameters = PluginUtility::getTagAttributes($match);
                return array(
                    PluginUtility::STATE => $state,
                    PluginUtility::ATTRIBUTES => $parameters
                );

            case DOKU_LEXER_UNMATCHED :

                return PluginUtility::handleAndReturnUnmatchedData(self::TAG, $match, $handler);

            case DOKU_LEXER_EXIT:

                return array(PluginUtility::STATE => $state);

        }
        return [];
    }

    /**
     * Render the output
     * @param string $format
     * @param Doku_Renderer $renderer
     * @param array $data - what the function handle() return'ed
     * @return boolean - rendered correctly? (however, returned value is not used at the moment)
     * @see DokuWiki_Syntax_Plugin::render()
     *
     *
     */
    function render($format, Doku_Renderer $renderer, $data)
    {
        // The $data variable comes from the handle() function
        //
        // $mode = 'xhtml' means that we output html
        // There is other mode such as metadata, odt
        if ($format == 'xhtml') {

            /**
             * To help the parser recognize that _xmlEntities is a function of Doku_Renderer_xhtml
             * and not of Doku_Renderer
             *
             * @var Doku_Renderer_xhtml $renderer
             */

            $state = $data[PluginUtility::STATE];
            switch ($state) {

                case DOKU_LEXER_ENTER :

                    $renderer->doc .= '<div class="webcomponent_' . self::getTag() . '"';
                    $attributes = $data[PluginUtility::ATTRIBUTES];
                    // Normally none
                    if ($attributes['display'] ?? null) {
                        $renderer->doc .= ' style="display:' . $attributes['display'] . '" ';
                    }
                    $renderer->doc .= '>';
                    break;

                case DOKU_LEXER_UNMATCHED:
                    $renderer->doc .= PluginUtility::renderUnmatched($data);
                    break;
                case DOKU_LEXER_EXIT :

                    $renderer->doc .= '</div>';
                    break;
            }

            return true;
        }
        return false;
    }

    public static function getElementName()
    {
        return PluginUtility::getTagName(get_called_class());
    }

}