<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

/*
 * smarty_function_button: Display a Tiki button
 *
 * params will be used as params for as smarty self_link params, except those special params specific to smarty button :
 *  - _icon: DEPRECATED previously used for file path for legacy icons
 *  - _icon_name: use icon name to show appropriate icon regardless of iconset chosen
 *    - _text: Text that will be shown in the button
 *    - _auto_args: comma-separated list of URL arguments that will be kept from _REQUEST (like $auto_query_args) (in addition of course of those you can specify in the href param)
 *                    You can also use _auto_args='*' to specify that every arguments listed in the global var $auto_query_args has to be kept from URL
 *    - _flip_id: id HTML atribute of the element to show/hide (for type 'flip'). This will automatically generate an 'onclick' attribute that will use tiki javascript function flip() to show/hide some content.
 *    - _flip_hide_text: if set to 'n', do not display a '(Hide)' suffix after _text when status is not 'hidden'
 *    - _flip_default_open: if set to 'y', the flip is open by default (if no cookie jar)
 *    - _escape: if set to 'y', will escape the apostrophes in onclick
 *  - _type: button styling. Possible values: primary, secondary, success, info, warning, danger, link (following bootstrap conventions)
 *     Set different class, title, text and icon depending on whether the button is disabled or selected
 *  - _disabled: set to y to disable the button
 *  - _disabled_class: class to use if _disabled is set to y. Default is 'disabled'
 *  - _disabled_title: button title to use if _disabled is set to y
 *  - _disabled_text: button text to use if _disabled is set to y
 *  - _disabled_icon_name: button icon to use if _disabled is set to y
 *  - _selected: set to y to enable the button.
 *  - _selected_class: class to use if _selected set to y. Default is 'selected'
 *  - _selected_title: button title to use if _selected is set to y
 *  - _selected_text: button text to use if _selected is set to y
 *  - _selected_icon_name: button icon to use if _selected is set to y
 */
/**
 * @param array $params
 * @param \Smarty_Internal_Template $smarty
 * @return string
 */
function smarty_function_button($params, $smarty)
{
    if (! is_array($params) || (! isset($params['_text']) && ! isset($params['_icon_name']))) {
        return '';
    }
    global $tikilib, $prefs, $auto_query_args;

    $class = null;

    $smarty->loadPlugin('smarty_block_self_link');

    $selected = false ;
    if (! empty($params['_selected'])) {
        if ($params['_selected'] == 'y') {
            $selected = true;
            if (! empty($params['_selected_class'])) {
                $params['_class'] = $params['_selected_class'];
            } else {
                $params['_class'] = 'selected';
            }
            if (! empty($params['_selected_text'])) {
                $params['_text'] = $params['_selected_text'];
            }
            if (! empty($params['_selected_title'])) {
                $params['_title'] = $params['_selected_title'];
            }
            if (! empty($params['_selected_icon'])) {
                $params['_icon'] = $params['_selected_icon'];
            }
            if (! empty($params['_selected_icon_name'])) {
                $params['_icon_name'] = $params['_selected_icon_name'];
            }
        }
    }

    $disabled = false ;
    //check if it's a wiki page in format ((Page Name)) and check permission
    if (isset($params['href']) && preg_match('|^\(\((.+?)\)\)$|', $params['href'], $matches)) {
        $params['href'] = rawurlencode($matches[1]);
        $perms = Perms::get(['type' => 'wiki page', 'object' => $matches[1]]);
        if (! ($perms->view && $perms->wiki_view_ref)) {
            $disabled = true;
            $params['_title'] = tr('You don\'t have permission to view the linked page');
        }
    }

    if (! empty($params['_disabled'])) {
        if ($params['_disabled'] == 'y') {
            $disabled = true;
            if (! empty($params['_disabled_class'])) {
                $params['_class'] = $params['_disabled_class'];
            } else {
                $params['_class'] = 'disabled';
            }
            if (! empty($params['_disabled_text'])) {
                $params['_text'] = $params['_disabled_text'];
            }
            if (! empty($params['_disabled_title'])) {
                $params['_title'] = $params['_disabled_title'];
            }
            if (! empty($params['_disabled_icon'])) {
                $params['_icon'] = $params['_disabled_icon'];
            }
            if (! empty($params['_disabled_icon_name'])) {
                $params['_icon_name'] = $params['_disabled_icon_name'];
            }
        }
        unset($params['_disabled']);
    }

    //apply class only to the button
    if (! empty($params['_class'])) {
        $class = $params['_class'];
    }
    if (! empty($params['_id'])) {
        $id = ' id="' . $params['_id'] . '"';
    } else {
        $id = '';
    }

    unset($params['_class']);

    //target parameter
    if (! empty($params['_target'])) {
        $target = $params['_target'];
    } else {
        $target = '';
    }

    unset($params['_target']);

    if (! $disabled) {
        $flip_id = '';
        if (! empty($params['_flip_id'])) {
            $params['_onclick'] = "flip('"
                . $params['_flip_id']
                . "');flip('"
                . $params['_flip_id']
                . "_close','inline');return false;";
            if (! empty($params['_escape']) && $params['_escape'] === 'y') {
                $params['_onclick'] = addslashes($params['_onclick']);
            }
            if (! isset($params['_flip_hide_text']) || $params['_flip_hide_text'] != 'n') {
                $cookie_key = 'show_' . $params['_flip_id'];
                $params['_text'] .= '<span id="' . $params['_flip_id'] . '_close" style="display:'
                    . ( ((isset($_SESSION['tiki_cookie_jar'][$cookie_key]) && $_SESSION['tiki_cookie_jar'][$cookie_key] == 'y') || (isset($params['_flip_default_open']) && $params['_flip_default_open'] == 'y')) ? 'inline' : 'none' )
                    . ';"> (' . tra('Hide') . ')</span>';
            }
        }

        $auto_query_args_orig = $auto_query_args;
        if (! empty($params['_auto_args'])) {
            if ($params['_auto_args'] != '*') {
                if (! isset($auto_query_args)) {
                    $auto_query_args = null;
                }
                $auto_query_args = explode(',', $params['_auto_args']);
            }
        } else {
            $params['_noauto'] = 'y';
        }

        // Remove params that does not start with a '_', since we don't want them to modify the URL except when in auto_query_args
        if (! isset($params['_keepall']) || $params['_keepall'] != 'y') {
            foreach ($params as $k => $v) {
                if (
                    $k[0] != '_'
                    && $k != 'href'
                    && $k != 'data'
                    && (empty($auto_query_args) || ! in_array($k, $auto_query_args))
                ) {
                    unset($params[$k]);
                }
            }
        }

        $url_args = [];
        if (! empty($params['href'])) {
            // Handle anchors
            if (strpos($params['href'], '#')) {
                list($params['href'], $params['_anchor']) = explode('#', $params['href'], 2);
            }

            // Handle script and URL arguments
            if (( $pos = strpos($params['href'], '?') ) !== false) {
                $params['_script'] = substr($params['href'], 0, $pos);
                parse_str($tikilib->htmldecode(substr($params['href'], $pos + 1)), $url_args);
                $params = array_merge($params, $url_args);
            } else {
                $params['_script'] = $params['href'];
            }

            unset($params['href']);
        }

        if (! isset($params['_text'])) { // avoid NOTICE (E_NOTICE): Undefined index
            $params['_text'] = '';
        }
        $html = smarty_block_self_link(
            $params,
            $params['_text'],
            $smarty
        );

        $url = str_replace('+', ' ', str_replace('&amp;', '&', urldecode($_SERVER['REQUEST_URI'])));
        $dom = new DOMDocument();
        $dom->loadHTML($html);
        foreach ($dom->getElementsByTagName('a') as $link) {
            if ($url == $link->getAttribute('href')) {
                $selected = true;
                if ($class === null) {
                    $class = 'active';
                }
            }
        }
    } else {
        $params['_disabled'] = 'y';
        $html = smarty_block_self_link(
            $params,
            $params['_text'],
            $smarty
        );
    }

    $type = isset($params['_type']) ? $params['_type'] : 'primary';

    $auto_query_args = $auto_query_args_orig;
    $html = preg_replace('/<a /', '<a class="btn btn-' . $type . ' ' . $class . '" target="' . $target . '" data-role="button" data-inline="true" ' . $id . ' ', $html);

    return $html;
}