laivadata-plugin.php

<?php
/*
* Plugin Name: Laivadata ship database search
* Plugin URI: http://www.jukkakumpusalo.com
* Description: This plugin creates a search widget to Finnish ship database through REST API
* Version: 1.0
* Author: Heikki Kurhinen, Metatavu Oy and Jukka Kumpusalo
* Author URI: http://www.jukkakumpusalo.com
* License: GPL12
*/

// Define search code
function search_form_code() {
  echo '<div id="ship-api-search"></div>';
  wp_enqueue_style('ship-api-theme-style', plugin_dir_url(__FILE__) . 'js/theme/dist/ship-api-bootstrap-theme.min.css' );
	wp_enqueue_script('ship-api-bootbox', 'https://cdnjs.cloudflare.com/ajax/libs/bootbox.js/4.4.0/bootbox.min.js', false);
	wp_enqueue_script('ship-api-fontawesome', 'https://use.fontawesome.com/095a8f8320.js', false);
	wp_enqueue_script('ship-api-theme-script', plugin_dir_url(__FILE__) . 'js/theme/dist/ship-api-bootstrap-theme.min.js', array('jquery'));
	wp_enqueue_script('ship-api-script', plugin_dir_url(__FILE__) . 'js/dist/ship-api.min.js', array('jquery'));
  wp_enqueue_script('ship-api-init-script', plugin_dir_url(__FILE__) . 'js/plugin.js', array('jquery'));

  $previousSearches = [];
	if ( is_user_logged_in() ) {
    global $current_user;
    get_currentuserinfo();
    $old_searches = get_user_meta($current_user->ID, 'user_searches', true);
    if (isset($old_searches)&& is_array($old_searches)){
      $previousSearches = $old_searches;
    }
  }

  wp_localize_script( 'ship-api-init-script', 'previousSearches', array( 'data' => json_encode($previousSearches) ) );
  wp_localize_script( 'ship-api-init-script', 'ajaxConfig', array( 'url' => admin_url( 'admin-ajax.php' ) ) );
}

// Create Wordpress constructor using default widget template
class Laivadata_Widget extends WP_Widget {

	function __construct() {
		parent::__construct(
			'Laivadata_Widget', // Base ID
			esc_html__( 'Laivadata Search Widget', 'text_domain' ), // Name
			array( 'description' => esc_html__( 'Laivadata Search Widget', 'text_domain' ), ) // 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 ) {
		echo $args['before_widget'];
		if ( ! empty( $instance['title'] ) ) {
			echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ) . $args['after_title'];
		}
		search_form_code();
		echo $args['after_widget'];
	}

	/**
	 * Back-end widget form.
	 *
	 * @see WP_Widget::form()
	 *
	 * @param array $instance Previously saved values from database.
	 */
	public function form( $instance ) {
		$title = ! empty( $instance['title'] ) ? $instance['title'] : esc_html__( 'New title', 'text_domain' );
		?>
		<p>
		<label for="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>"><?php esc_attr_e( 'Title:', 'text_domain' ); ?></label> 
		<input class="widefat" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" name="<?php echo esc_attr( $this->get_field_name( 'title' ) ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>">
		</p>
		<?php 
	}

	/**
	 * 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['title'] = ( ! empty( $new_instance['title'] ) ) ? strip_tags( $new_instance['title'] ) : '';

		return $instance;
	}
} // End of class Laivadata_Widget

// Register Laivadata widget
function register_laivadata_widget() {
    register_widget( 'Laivadata_Widget' );
}

function ships_searched_callback() {
	if ( is_user_logged_in() ) {
    global $current_user;
    get_currentuserinfo();

    $query = ( ! empty( $_POST['query'] ) ) ? strip_tags( $_POST['query'] ) : '';
    $offset = ( ! empty( $_POST['offset'] ) ) ? strip_tags( $_POST['offset'] ) : '';

    $old_searches = get_user_meta($current_user->ID, 'user_searches', true);
    if (isset($old_searches)&& is_array($old_searches)){
        $old_searches[] = array('query' => $query, 'offset' => $offset);
        if(count($old_searches) > 10) {
          array_shift($old_searches);
        }
    } else {
      $old_searches = array();
      $old_searches[] = array('query' => $query, 'offset' => $offset);
    }

    update_user_meta( $current_user->ID, 'user_searches', $old_searches);

    echo json_encode($old_searches); 
  } else {
    echo 'not-logged-in';
  }
	wp_die();
}

add_action( 'widgets_init', 'register_laivadata_widget' );

add_action( 'wp_ajax_ships_searched', 'ships_searched_callback' );
add_action( 'wp_ajax_nopriv_ships_searched', 'ships_searched_callback' );

?>