<?php if ( ! defined( 'ABSPATH' ) ) exit;
/**
 * Adds Ninja Forms widget.
 */
class Ninja_Forms_Widget extends WP_Widget {

	/**
	 * Register widget with WordPress.
	 */
	public function __construct() {
		parent::__construct(
	 		'ninja_forms_widget', // Base ID
			'Ninja Forms Widget', // Name
			array( 'description' => __( 'Ninja Forms Widget', 'ninja-forms' ), ) // Args
		);
	}

	/**
	 * Front-end display of widget.
	 *
	 * @see WP_Widget::widget()
	 *
	 * @param array $args     Widget arguments.
	 * @param array $instance Saved values from database.
	 */
	public function widget( $args, $instance ) {
		extract( $args );
		$form_id = $instance['form_id'];
		$form_row = ninja_forms_get_form_by_id( $form_id );
		$form_data = $form_row['data'];
		if ( isset ( $form_data['form_title'] ) ) {
			$title = $form_data['form_title'];
		} else {
			$title = '';
		}
		
		$title = apply_filters( 'widget_title', $title );
		$display_title = $instance['display_title'];

		echo $before_widget;
		if ( ! empty( $title ) AND $display_title == 1 )
			echo $before_title . $title . $after_title;
		ninja_forms_display_form( $form_id );
		echo $after_widget;
	}

	/**
	 * Sanitize widget form values as they are saved.
	 *
	 * @see WP_Widget::update()
	 *
	 * @param array $new_instance Values just sent to be saved.
	 * @param array $old_instance Previously saved values from database.
	 *
	 * @return array Updated safe values to be saved.
	 */
	public function update( $new_instance, $old_instance ) {

		$instance = array();
		$instance['form_id'] = $new_instance['form_id'];
		$instance['display_title'] = $new_instance['display_title'];

		return $instance;
	}

	/**
	 * Back-end widget form.
	 *
	 * @see WP_Widget::form()
	 *
	 * @param array $instance Previously saved values from database.
	 */
	public function form( $instance ) {
		if( isset( $instance['form_id'] ) ){
			$form_id = $instance['form_id'];
		}else{
			$form_id = '';
		}

		if( isset( $instance['display_title'] ) ){
			$display_title = $instance['display_title'];
		}else{
			$display_title = 0;
		}

		?>
		<p>
			<label>
				<?php _e( 'Display Title', 'ninja-forms' ); ?>
				<input type="hidden" value="0" name="<?php echo $this->get_field_name( 'display_title' ); ?>">
				<input type="checkbox" value="1" id="<?php echo $this->get_field_id( 'display_title' ); ?>" name="<?php echo $this->get_field_name( 'display_title' ); ?>" <?php checked( $display_title, 1 );?>>
			</label>
		</p>
		<p>
		<select id="<?php echo $this->get_field_id( 'form_id' ); ?>" name="<?php echo $this->get_field_name( 'form_id' ); ?>">
			<option value="0">-- <?php _e('None', 'ninja-forms');?></option>
			<?php
			$all_forms = ninja_forms_get_all_forms();

			foreach($all_forms as $form){
				$title = $form['data']['form_title'];
				$id = $form['id'];
				?>
				<option value = "<?php echo $id;?>" <?php selected( $id, $form_id );?>>
				<?php echo $title;?>
				</option>
				<?php
			}
			?>
			</select>
		</p>

		<?php
	}

} // class Foo_Widget

function NF_register_widgets() {
    register_widget( 'ninja_forms_widget' );
}

add_action( 'widgets_init', 'NF_register_widgets' );