<?php

class P2P_Widget extends scbWidget {

	protected $defaults = array(
		'ctype'   => false,
		'listing' => 'connected',
		'title'   => '',
	);

	static function init( $class = '', $file = false, $base = 'p2p' ) {
		if ( empty( $class ) ) {
			$class = __CLASS__;
		}

		parent::init( $class, $file, $base );
	}

	function __construct() {
		parent::__construct(
			'p2p',
			__( 'Posts 2 Posts', P2P_TEXTDOMAIN ),
			array(
				'description' => __( 'A list of posts connected to the current post', P2P_TEXTDOMAIN ),
			)
		);
	}

	function form( $instance ) {
		if ( empty( $instance ) ) {
			$instance = $this->defaults;
		}

		$ctypes = array();

		foreach ( P2P_Connection_Type_Factory::get_all_instances() as $p2p_type => $ctype ) {
			$ctypes[ $p2p_type ] = $ctype->get_desc();
		}

		echo html(
			'p',
			$this->input(
				array(
					'type' => 'text',
					'name' => 'title',
					'desc' => __( 'Title:', P2P_TEXTDOMAIN ),
				),
				$instance
			)
		);

		echo html(
			'p',
			$this->input(
				array(
					'type'   => 'select',
					'name'   => 'ctype',
					'values' => $ctypes,
					'desc'   => __( 'Connection type:', P2P_TEXTDOMAIN ),
					'extra'  => "style='width: 100%'",
				),
				$instance
			)
		);

		echo html(
			'p',
			__( 'Connection listing:', P2P_TEXTDOMAIN ),
			'<br>',
			$this->input(
				array(
					'type'   => 'radio',
					'name'   => 'listing',
					'values' => array(
						'connected' => __( 'connected', P2P_TEXTDOMAIN ),
						'related'   => __( 'related', P2P_TEXTDOMAIN ),
					),
				),
				$instance
			)
		);
	}

	function widget( $args, $instance ) {
		$instance = array_merge( $this->defaults, $instance );

		$output = P2P_List_Renderer::query_and_render(
			array(
				'ctype'   => $instance['ctype'],
				'method'  => ( 'related' == $instance['listing'] ? 'get_related' : 'get_connected' ),
				'item'    => get_queried_object(),
				'mode'    => 'ul',
				'context' => 'widget',
			)
		);

		if ( ! $output ) {
			return;
		}

		$title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base );

		extract( $args );

		echo $before_widget;

		if ( ! empty( $title ) ) {
			echo $before_title . $title . $after_title;
		}

		echo $output;

		echo $after_widget;
	}
}