<?php
/*
 * Multilingual text widget
 */
add_action('plugins_loaded', 'icl_widget_text_init', 11);

function icl_widget_text_init() {
    if (defined('ICL_SITEPRESS_VERSION') && !ICL_PLUGIN_INACTIVE) {
        add_action('widgets_init', 'icl_widget_text_widgets_init_hook');
        add_action('in_widget_form', 'icl_widget_text_in_widget_form_hook', 10, 3);
    }
}

function icl_widget_text_widgets_init_hook() {
    register_widget('WP_Widget_Text_Icl');
}

function icl_widget_text_in_widget_form_hook($widget, $return, $instance) {
    if ($widget->name == 'Text') {
        // Convert if necessary
        if ($widget->updated && isset($_POST['icl_convert'])) {
            if (icl_widget_text_convert_to_multilingual($widget, $instance) === TRUE) {
                _e('This widget is converted to multilingual', 'wpml-string-translation');
            }
            return '';
        }
        // Display form
        if (!icl_widget_text_is_converted($widget)) {
            icl_widget_text_language_selectbox();
            echo '<label><input type="checkbox" name="icl_convert" value="1" />&nbsp;'
            . __('Convert to multilingual widget', 'wpml-string-translation') . '</label>';
        } else {
            _e('This widget is converted to multilingual', 'wpml-string-translation');
        }
    }
}

function icl_widget_text_language_selectbox($language = 'multilingual',
        $field_name = 'icl_language') {
    global $sitepress;
    $languages = $sitepress->get_active_languages();
    echo '<select name="' . $field_name . '"><option value="multilingual"';
    echo $language == 'multilingual' ? ' selected="selected"' : '';
    echo '>Multilingual</option>';
    if (!empty($languages)) {
        foreach ($languages as $lang) {
            echo '<option value="' . esc_attr( $lang['code'] ) . '"';
            echo $language == $lang['code'] ? ' selected="selected"' : '';
            echo '>' . esc_html( $lang['display_name'] ) . '</option>';
        }
    }
    echo '</select>';
}

function icl_widget_text_is_converted($widget) {
    $widgets = get_option('widget_text_icl', array());
    foreach ($widgets as $icl_widget) {
        if (isset($icl_widget['icl_converted_from'])
                && $icl_widget['icl_converted_from'] == $widget->id) {
            return TRUE;
        }
    }
    return FALSE;
}

function icl_widget_text_convert_to_multilingual($text_widget, $instance) {
    global $wp_widget_factory;
    $icl_widget = $wp_widget_factory->widgets['WP_Widget_Text_Icl'];
    $number = $icl_widget->number + 1;
    $icl_widget->_set($number);
    $icl_widget->_register_one($number);

    // Get in which sidebar
    $sidebars = wp_get_sidebars_widgets();
    if (!isset($_POST['sidebar']) || !isset($sidebars[$_POST['sidebar']])) {
        _e('Converting to multilingual widget failed. No sidebar specified.', 'wpml-string-translation');
        return FALSE;
    }

    // Add new instance
    $icl_widgets_text = get_option('widget_text_icl', array());
    if (isset($icl_widgets_text[$icl_widget->number])) {
        _e('Widget is already converted', 'wpml-string-translation');
        return FALSE;
    }
    unset($icl_widgets_text['_multiwidget']);
    $_POST['icl_language'] = isset($_POST['icl_language']) ? $_POST['icl_language'] : 'multilingual';
    $icl_widgets_text[$icl_widget->number] = array(
        'icl_language' => $_POST['icl_language'],
        'icl_converted_from' => $text_widget->id,
        'title' => $instance['title'],
        'text' => $instance['text'],
        'filter' => isset($new_instance['filter']),
    );
    $icl_widgets_text['_multiwidget'] = 1;
    update_option('widget_text_icl', $icl_widgets_text);

    //unset original instance
    foreach ( $sidebars[$_POST['sidebar']] as $key => $widget ){
    	if( $text_widget->id === $widget ){
		    unset( $sidebars[$_POST['sidebar']][$key] );
		    $sidebars[$_POST['sidebar']] = array_values( $sidebars[$_POST['sidebar']] );
		    break;
	    }
    }

    // Set in sidebar
    $sidebars[$_POST['sidebar']][] = $icl_widget->id;
    wp_set_sidebars_widgets($sidebars);

    // Register strings
    if ($_POST['icl_language'] == 'multilingual') {
        icl_register_string( WP_Widget_Text_Icl::STRING_DOMAIN, 'widget title', $instance['title'] );
        icl_register_string( WP_Widget_Text_Icl::STRING_DOMAIN, 'widget body - ' . $icl_widget->id, $instance['text'] );
    }

    // Refresh
	echo ' 
<script type="text/javascript">
	jQuery(document).ajaxSuccess(function(e, xhr, settings) {
	     window.location = "' . admin_url( 'widgets.php' ) . '";  
	});
</script> 
	';
    return TRUE;
}