<?php
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly.

/**
 * Sensei Lesson Component Widget
 *
 * A WooThemes standardized component widget.
 *
 * @package Views
 * @subpackage Widgets
 * @author Automattic
 *
 * @since 1.0.0
 */
class WooThemes_Sensei_Lesson_Component_Widget extends WP_Widget {
	protected $woo_widget_cssclass;
	protected $woo_widget_description;
	protected $woo_widget_idbase;
	protected $woo_widget_title;

	/**
	 * Constructor function.
	 * @since  1.0.0
	 * @return  void
	 */
	public function __construct() {
		/* Widget variable settings. */
		$this->woo_widget_cssclass = 'widget_sensei_lesson_component';
		$this->woo_widget_description = __( 'This widget will output a list of the latest Lessons.', 'woothemes-sensei' );
		$this->woo_widget_idbase = 'sensei_lesson_component';
		$this->woo_widget_title = __( 'Sensei - Lesson Component', 'woothemes-sensei' );

		$this->woo_widget_componentslist = array(
												'newlessons' => __( 'New Lessons', 'woothemes-sensei' ),
												);

		/* Widget settings. */
		$widget_ops = array( 'classname' => $this->woo_widget_cssclass, 'description' => $this->woo_widget_description );

		/* Widget control settings. */
		$control_ops = array( 'width' => 250, 'height' => 350, 'id_base' => $this->woo_widget_idbase );

		/* Create the widget. */
		parent::__construct( $this->woo_widget_idbase, $this->woo_widget_title, $widget_ops, $control_ops );
	} // End __construct()

	/**
	 * Display the widget on the frontend.
	 * @since  1.0.0
	 * @param  array $args     Widget arguments.
	 * @param  array $instance Widget settings for this instance.
	 * @return void
	 */
	public function widget( $args, $instance ) {

        $before_widget = $args[ 'before_widget' ];
        $before_title  = $args[ 'before_title' ];
        $after_title   = $args[ 'after_title' ];
        $after_widget  = $args[ 'after_widget' ];

		if ( in_array( $instance['component'], array_keys( $this->woo_widget_componentslist ) ) && ( 'activecourses' == $instance['component'] || 'completedcourses' == $instance['component'] ) && !is_user_logged_in() ) {
			// No Output
		} else {
			/* Our variables from the widget settings. */
			$title = apply_filters('widget_title', $instance['title'], $instance, $this->id_base );

			/* Before widget (defined by themes). */
			echo $before_widget;

			/* Display the widget title if one was input (before and after defined by themes). */
			if ( $title ) { echo $before_title . $title . $after_title; }

			/* Widget content. */
			// Add actions for plugins/themes to hook onto.
			do_action( $this->woo_widget_cssclass . '_top' );

			if ( in_array( $instance['component'], array_keys( $this->woo_widget_componentslist ) ) ) {
				$this->load_component( $instance );
			}

			// Add actions for plugins/themes to hook onto.
			do_action( $this->woo_widget_cssclass . '_bottom' );

			/* After widget (defined by themes). */
			echo $after_widget;
		} // End If Statement

	} // End widget()

	/**
	 * Method to update the settings from the form() method.
	 * @since  1.0.0
	 * @param  array $new_instance New settings.
	 * @param  array $old_instance Previous settings.
	 * @return array               Updated settings.
	 */
	public function update ( $new_instance, $old_instance ) {
		$instance = $old_instance;

		/* Strip tags for title and name to remove HTML (important for text inputs). */
		$instance['title'] = strip_tags( $new_instance['title'] );

		/* The select box is returning a text value, so we escape it. */
		$instance['component'] = esc_attr( $new_instance['component'] );

		/* The select box is returning a text value, so we escape it. */
		$instance['limit'] = esc_attr( $new_instance['limit'] );


		return $instance;
	} // End update()

	/**
	 * The form on the widget control in the widget administration area.
	 * Make use of the get_field_id() and get_field_name() function when creating your form elements. This handles the confusing stuff.
	 * @since  1.0.0
	 * @param  array $instance The settings for this instance.
	 * @return void
	 */
    public function form( $instance ) {

		/* Set up some default widget settings. */
		/* Make sure all keys are added here, even with empty string values. */
		$defaults = array(
						'title' => '',
						'component' => '',
						'limit' => 3
					);

		$instance = wp_parse_args( (array) $instance, $defaults );
?>
		<!-- Widget Title: Text Input -->
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php _e( 'Title (optional):', 'woothemes-sensei' ); ?></label>
			<input type="text" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>"  value="<?php echo esc_attr( $instance['title'] ); ?>" class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" />
		</p>
		<!-- Widget Component: Select Input -->
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'component' ) ); ?>"><?php _e( 'Component:', 'woothemes-sensei' ); ?></label>
			<select name="<?php echo esc_attr( $this->get_field_name( 'component' ) ); ?>" class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'component' ) ); ?>">
			<?php foreach ( $this->woo_widget_componentslist as $k => $v ) { ?>
				<option value="<?php echo esc_attr( $k ); ?>"<?php selected( $instance['component'], $k ); ?>><?php echo $v; ?></option>
			<?php } ?>
			</select>
		</p>
		<!-- Widget Limit: Text Input -->
		<p>
			<label for="<?php echo esc_attr( $this->get_field_id( 'limit' ) ); ?>"><?php _e( 'Number of Lessons (optional):', 'woothemes-sensei' ); ?></label>
			<input type="text" name="<?php echo esc_attr( $this->get_field_name( 'limit' ) ); ?>"  value="<?php echo esc_attr( $instance['limit'] ); ?>" class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'limit' ) ); ?>" />
		</p>

<?php
	} // End form()

	/**
	 * Load the desired component, if a method is available for it.
	 * @param  string $instance The component to potentially be loaded.
	 * @since  5.0.8
	 * @return void
	 */
	protected function load_component ( $instance ) {

		global  $current_user;

		/*
		newlessons
		*/
		$posts_array = array();

		$post_args = array(	'post_type' 		=> 'lesson',
							'posts_per_page' 		=> intval( $instance[ 'limit' ] ),
							'orderby'         	=> 'menu_order date',
    						'order'           	=> 'DESC',
    						'post_status'       => 'publish',
							'suppress_filters' 	=> 0
							);
		$posts_array = get_posts( $post_args );

		if ( count( $posts_array ) > 0 ) { ?>
			<ul>
			<?php foreach ($posts_array as $post_item){
		    	$post_id = absint( $post_item->ID );
		    	$post_title = $post_item->post_title;
		    	$user_info = get_userdata( absint( $post_item->post_author ) );
		    	$author_link = get_author_posts_url( absint( $post_item->post_author ) );
		    	$author_display_name = $user_info->display_name;
		    	$author_id = $post_item->post_author;
		    	$lesson_course_id = get_post_meta( $post_id, '_lesson_course', true );
		    ?>
		    	<li class="fix">
		    		<?php do_action( 'sensei_lesson_image', $post_id, '100', '100', false, true ); ?>
		    		<a href="<?php echo esc_url( get_permalink( $post_id ) ); ?>" title="<?php echo esc_attr( $post_title ); ?>"><?php echo $post_title; ?></a>
		    		<br />
		    		<?php if ( isset( Sensei()->settings->settings[ 'lesson_author' ] ) && ( Sensei()->settings->settings[ 'lesson_author' ] ) ) { ?>
    					<span class="course-author">
    						<?php _e( 'by', 'woothemes-sensei' ); ?>
    						<a href="<?php echo esc_url( $author_link ); ?>" title="<?php echo esc_attr( $author_display_name ); ?>">
    							<?php echo esc_html( $author_display_name ); ?>
    						</a>
    					</span>
    					<br />
    				<?php } // End If Statement ?>
    				<?php if ( 0 < $lesson_course_id ) { ?>
                        <span class="lesson-course"><?php echo ' ' . sprintf( __( 'Part of: %s', 'woothemes-sensei' ), '<a href="' . esc_url( get_permalink( $lesson_course_id ) ) . '" title="' . esc_attr( __( 'View course', 'woothemes-sensei' ) ) . '"><em>' . get_the_title( $lesson_course_id ) . '</em></a>' ); ?></span>
                    <?php } ?>
    				<br />
		    	</li>
		    <?php } // End For Loop ?>
		    <?php echo '<li class="my-account fix"><a class="button" href="'. esc_url( get_post_type_archive_link( 'lesson' ) ) .'">'.__('More Lessons', 'woothemes-sensei').'</a></li>'; ?>
		</ul>
		<?php } // End If Statement
	} // End load_component()
} // End Class
