<?php

// WP_List_Table is not loaded automatically so we need to load it in our application
if( ! class_exists( 'WP_List_Table' ) ) {
    require_once( ABSPATH . 'wp-admin/includes/class-wp-list-table.php' );
}

/**
 * Create a new table class that will extend the WP_List_Table
 */
class Member_Logs_Table extends WP_List_Table
{
    /**
     * Prepare the items for the table to process
     *
     * @return Void
     */
    public function prepare_items()
    {
        $columns = $this->get_columns();
        $hidden = $this->get_hidden_columns();
        $sortable = $this->get_sortable_columns();

        $data = $this->table_data();
        usort( $data, array( &$this, 'sort_data' ) );

        $perPage = 20;
        $currentPage = $this->get_pagenum();
        $totalItems = count($data);

        $this->set_pagination_args( array(
            'total_items' => $totalItems,
            'per_page'    => $perPage
        ) );

        $data = array_slice($data,(($currentPage-1)*$perPage),$perPage);
        

        $this->_column_headers = array($columns, $hidden, $sortable);
        $this->items = $data;
    }

    /**
     * Override the parent columns method. Defines the columns to use in your listing table
     *
     * @return Array
     */
    public function get_columns()
    {
        $columns = array(
            'name'      => 'Name',
            'post'      => 'Doc / Video',
            'type'      => 'Type',
            'action'    => 'Log',
            'date'      => 'Date'
        );

        return $columns;
    }

    /**
     * Define which columns are hidden
     *
     * @return Array
     */
    public function get_hidden_columns()
    {
        return array();
    }

    /**
     * Define the sortable columns
     *
     * @return Array
     */
    // public function get_sortable_columns()
    // {
    //     return array('amount' => array('amount', false));
    // }
    public function get_sortable_columns(){
         $s_columns = array (
             'name' => [ 'name', true], 
             'date' => [ 'date', true],
         );
         return $s_columns;
     }

    /**
     * Get the table data
     *
     * @return Array
     */
    private function table_data()
    {
        global $wpdb;
        $table_resources = $wpdb->prefix . 'member_resources_logs';
        $table_posts = $wpdb->prefix . 'posts';
        $table_users = $wpdb->prefix . 'users';

        $results = $wpdb->get_results( "SELECT CONCAT(usermetafirst.meta_value,' ', usermetalast.meta_value) AS name, tbl_posts.post_title AS post, tbl_resources.log_type AS type, tbl_resources.action_type AS action, tbl_resources.created_at AS date  FROM {$table_resources} tbl_resources LEFT JOIN {$table_posts} tbl_posts ON (tbl_resources.resource_post_id = tbl_posts.ID) LEFT JOIN {$table_users} tbl_users ON (tbl_resources.user_id = tbl_users.ID) INNER JOIN wp_usermeta usermetalast ON (tbl_users.ID = usermetalast.user_id AND usermetalast.meta_key = 'last_name') INNER JOIN wp_usermeta usermetafirst ON (tbl_users.ID = usermetafirst.user_id AND usermetafirst.meta_key = 'first_name')");

        $log_results = json_decode( json_encode($results), true);


        return $log_results;
    }

    /**
     * Define what data to show on each column of the table
     *
     * @param  Array $item        Data
     * @param  String $column_name - Current column name
     *
     * @return Mixed
     */
    public function column_default( $item, $column_name )
    {
        switch( $column_name ) {
            case 'name':
            case 'post':
            case 'type':
            case 'action':
            case 'date':
                return $item[ $column_name ];

            default:
                return print_r( $item, true ) ;
        }
    }

    /**
     * Allows you to sort the data by the variables set in the $_GET
     *
     * @return Mixed
     */
    private function sort_data( $a, $b )
    {
        // Set defaults
        $orderby = 'date';
        $order = 'desc';

        // If orderby is set, use this as the sort column
        if(!empty($_GET['orderby']))
        {
            $orderby = $_GET['orderby'];
        }

        // If order is set use this as the order
        if(!empty($_GET['order']))
        {
            $order = $_GET['order'];
        }

        $result = strnatcmp( $a[$orderby], $b[$orderby] );

        if($order === 'asc')
        {
            return $result;
        }

        return -$result;
    }
}

?>