<?php
// must be run within Dokuwiki
if (!defined('DOKU_INC')) {
    die();
}

class admin_plugin_tagging extends DokuWiki_Admin_Plugin {

    /** @var helper_plugin_tagging */
    private $hlp;

    public function __construct() {
        $this->hlp      = plugin_load('helper', 'tagging');
    }

    /**
     * We allow use by managers
     *
     * @return bool always false
     */
    function forAdminOnly() {
        return false;
    }

    /**
     * Handle tag actions
     */
    function handle() {
        global $ID, $INPUT;
        
        //by default use current page namespace
        if (!$INPUT->has('filter')) $INPUT->set('filter', getNS($ID));
        

        //by default sort by tag name
        if (!$INPUT->has('sort')) $INPUT->set('sort', 'tid');
        
        //now starts functions handle
        if (!$INPUT->has('fn')) return false;
        if (!checkSecurityToken()) return false;
        
        // extract the command and any specific parameters
        // submit button name is of the form - fn[cmd][param(s)]
        $fn   = $INPUT->param('fn');

        if (is_array($fn)) {
            $cmd = key($fn);
            $param = is_array($fn[$cmd]) ? key($fn[$cmd]) : null;
        } else {
            $cmd = $fn;
            $param = null;
        }

        switch ($cmd) {
            case 'rename':
                $this->hlp->renameTag($INPUT->str('old'), $INPUT->str('new'));
                break;
            case 'delete':
                $this->hlp->deleteTags(array_keys($INPUT->arr('tags')), $INPUT->str('filter'));
                break;
            case 'sort':
                $INPUT->set('sort', $param);
                break;
            
        }
    }

    /**
     * Draw the interface
     */
    function html() {
        echo $this->locale_xhtml('intro');
        $this->html_form();
        echo '<br />';
        $this->html_table();
    }

    /**
     * Show form for renaming tags
     */
    protected function html_form() {
        global $ID, $INPUT;
        
        $form = new dokuwiki\Form\Form();
        $form->addClass('plugin_tagging');
        
        $form->setHiddenField('do',    'admin');
        $form->setHiddenField('page',  'tagging');
        $form->setHiddenField('id',     $ID);
        $form->setHiddenField('filter', $INPUT->str('filter'));
        $form->setHiddenField('sort', $INPUT->str('sort'));
        
        $form->addFieldsetOpen($this->getLang('admin rename tag'));
        $form->addTextInput('old', $this->getLang('admin find tag'))->addClass('block');
        $form->addTagClose('br');
        $form->addTextInput('new', $this->getLang('admin new name'))->addClass('block');
        $form->addTagClose('br');
        $form->addButton('fn[rename]', $this->getLang('admin save'));
        $form->addFieldsetClose();
        
        echo $form->toHTML();
    }

    /**
     * Display ALL the tags!
     */
    protected function html_table() {
        global $ID, $INPUT;
        
        $headers = array(
            array('value' => '&#160;',                           'sort_by' => false),
            array('value' => $this->getLang('admin tag'),        'sort_by' => 'tid'),
            array('value' => $this->getLang('admin occurrence'), 'sort_by' => 'count'),
            array('value' => $this->getLang('admin writtenas'),  'sort_by' => 'orig'),
            array('value' => $this->getLang('admin taggers'),    'sort_by' => 'taggers')
        );
        
        $sort = explode(',', $INPUT->str('sort'));
        $order_by = $sort[0];
        $desc = false;
        if (isset($sort[1]) && $sort[1] === 'desc') {
            $desc = true;
        }
        $tags = $this->hlp->getAllTags($INPUT->str('filter'), $order_by, $desc);
        
        $form = new dokuwiki\Form\Form();
        $form->setHiddenField('do',   'admin');
        $form->setHiddenField('page', 'tagging');
        $form->setHiddenField('id',    $ID);
        $form->setHiddenField('sort', $INPUT->str('sort'));
        
        $form->addTagOpen('table')->addClass('inline plugin_tagging');
        $form->addTagOpen('tr');
        $form->addTagOpen('th')->attr('colspan', count($headers));
        
        /**
         * Show form for filtering the tags by namespaces
         */
        $form->addTextInput('filter', $this->getLang('admin filter').': ');
        $form->addButton('fn[filter]', $this->getLang('admin filter button'));
        
        $form->addTagClose('th');
        $form->addTagClose('tr');
        
        /**
         * Table headers
         */        
        $form->addTagOpen('tr');
        foreach ($headers as $header) {
            $form->addTagOpen('th');
            if ($header['sort_by'] !== false) {
                $param = $header['sort_by'];
                $icon = 'arrow-both';
                $title = $this->getLang('admin sort ascending');
                if ($header['sort_by'] === $order_by) {
                    if ($desc === false) {
                        $icon = 'arrow-up';
                        $title = $this->getLang('admin sort descending');
                        $param .= ',desc';
                    } else {
                         $icon = 'arrow-down';
                    }
                }
                $form->addButtonHTML("fn[sort][$param]", $header['value']. ' '. inlineSVG(dirname(__FILE__) . "/images/$icon.svg"))
                                    ->addClass('plugin_tagging sort_button')
                                    ->attr('title', $title);
            }
            $form->addTagClose('th');
        }
        $form->addTagClose('tr');

        foreach ($tags as $taginfo) {
            $tagname = $taginfo['tid'];
            $taggers = $taginfo['taggers'];
            $written = $taginfo['orig'];

            $form->addTagOpen('tr');
            $form->addTagOpen('td')->addClass('centeralign');
            $form->addCheckbox('tags['.hsc($tagname).']');
            $form->addTagClose('td');
            $form->addHTML('<td><a class="tagslist" href="' . 
                    $this->hlp->getTagSearchURL($tagname) . '">' . hsc($tagname) . '</a></td>');
            $form->addHTML('<td>' . $taginfo['count'] . '</td>');
            $form->addHTML('<td>' . hsc($written) . '</td>');
            $form->addHTML('<td>' . hsc($taggers) . '</td>');
            
            $form->addTagClose('tr');
        }

        $form->addTagOpen('tr');
        $form->addHTML('<td colspan="5" class="centeralign"><span class="medialeft">');
        $form->addButton('fn[delete]', $this->getLang('admin delete_selected'))->id('tagging__del');
        $form->addHTML('</span></td>');
        $form->addTagClose('tr');
        
        $form->addTagClose('table');
        echo $form->toHTML();        
    }
}