<?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'             => false,
	);
	$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;
}