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

class AIOWPSecurity_List_Login_Failed_Attempts extends AIOWPSecurity_List_Table {
    
    function __construct(){
        global $status, $page;
                
        //Set parent defaults
        parent::__construct( array(
            'singular'  => 'item',     //singular name of the listed records
            'plural'    => 'items',    //plural name of the listed records
            'ajax'      => false        //does this table support ajax?
        ) );
        
    }

    function column_default($item, $column_name){
    	return $item[$column_name];
    }
        
    function column_login_attempt_ip($item){
        $tab = strip_tags($_REQUEST['tab']);
        $delete_url = sprintf('admin.php?page=%s&tab=%s&action=%s&failed_login_id=%s', AIOWPSEC_USER_LOGIN_MENU_SLUG, $tab, 'delete_failed_login_rec', $item['id']);
        //Add nonce to delete URL
        $delete_url_nonce = wp_nonce_url($delete_url, "delete_failed_login_rec", "aiowps_nonce");
        
        //Build row actions
        $actions = array(
            'delete' => '<a href="'.$delete_url_nonce.'" onclick="return confirm(\'Are you sure you want to delete this item?\')">Delete</a>',
        );
        
        //Return the user_login contents
        return sprintf('%1$s <span style="color:silver"></span>%2$s',
            /*$1%s*/ $item['login_attempt_ip'],
            /*$2%s*/ $this->row_actions($actions)
        );
    }

    
    function column_cb($item){
        return sprintf(
            '<input type="checkbox" name="%1$s[]" value="%2$s" />',
            /*$1%s*/ $this->_args['singular'],  //Let's simply repurpose the table's singular label
            /*$2%s*/ $item['id']                //The value of the checkbox should be the record's id
       );
    }
    
    function get_columns(){
        $columns = array(
            'cb' => '<input type="checkbox" />', //Render a checkbox
            'login_attempt_ip' => __('Login IP Range', 'all-in-one-wp-security-and-firewall'),
            'user_id' => __('User ID', 'all-in-one-wp-security-and-firewall'),
            'user_login' => __('Username', 'all-in-one-wp-security-and-firewall'),
            'failed_login_date' => __('Date', 'all-in-one-wp-security-and-firewall')
        );
        return $columns;
    }
    
    function get_sortable_columns() {
        $sortable_columns = array(
            'login_attempt_ip' => array('login_attempt_ip',false),
            'user_id' => array('user_id',false),
            'user_login' => array('user_login',false),
            'failed_login_date' => array('failed_login_date',false),
        );
        return $sortable_columns;
    }
    
    function get_bulk_actions() {
        $actions = array(
            'delete' => 'Delete'
        );
        return $actions;
    }

    function process_bulk_action() {
            global $aio_wp_security;
            if('delete'===$this->current_action()) 
            {//Process delete bulk actions
                if(!isset($_REQUEST['item']))
                {
                    $error_msg = '<div id="message" class="error"><p><strong>';
                    $error_msg .= __('Please select some records using the checkboxes','all-in-one-wp-security-and-firewall');
                    $error_msg .= '</strong></p></div>';
                    _e($error_msg);
                } else{
                    $this->delete_login_failed_records(($_REQUEST['item']));

                }
            }
    }
    
    
    
    /*
     * This function will delete selected records from the "failed_logins" table.
     * The function accepts either an array of IDs or a single ID
     */
    function delete_login_failed_records($entries)
    {
        global $wpdb, $aio_wp_security;
        $failed_login_table = AIOWPSEC_TBL_FAILED_LOGINS;
        if (is_array($entries))
        {
            if (isset($_REQUEST['_wp_http_referer']))
            {
                //Delete multiple records
                $tab = strip_tags($_REQUEST['tab']);
                $entries = array_filter($entries, 'is_numeric'); //discard non-numeric ID values
                $id_list = "(" .implode(",",$entries) .")"; //Create comma separate list for DB operation
                $delete_command = "DELETE FROM ".$failed_login_table." WHERE ID IN ".$id_list;
                $result = $wpdb->query($delete_command);
                if($result !== false)
                {
                    $redir_url = sprintf('admin.php?page=%s&tab=%s&bulk_count=%s', AIOWPSEC_USER_LOGIN_MENU_SLUG, $tab, count($entries));
                    AIOWPSecurity_Utility::redirect_to_url($redir_url);
                } else {
                    // error on bulk delete
                    $aio_wp_security->debug_logger->log_debug("DB error: ".$wpdb->last_error,4);
                    $redir_url = sprintf('admin.php?page=%s&tab=%s&bulk_error=%s', AIOWPSEC_USER_LOGIN_MENU_SLUG, $tab, 1);
                    AIOWPSecurity_Utility::redirect_to_url($redir_url);
                    
                }
            }
            
        } elseif ($entries != NULL)
        {
            $nonce=isset($_GET['aiowps_nonce'])?$_GET['aiowps_nonce']:'';
            if (!isset($nonce) ||!wp_verify_nonce($nonce, 'delete_failed_login_rec'))
            {
                $aio_wp_security->debug_logger->log_debug("Nonce check failed for delete failed login record operation!",4);
                die(__('Nonce check failed for delete failed login record operation!','all-in-one-wp-security-and-firewall'));
            }
            //Delete single record
            $delete_command = "DELETE FROM ".$failed_login_table." WHERE ID = '".absint($entries)."'";
            $result = $wpdb->query($delete_command);
            if($result !== false)
            {
                $success_msg = '<div id="message" class="updated fade"><p><strong>';
                $success_msg .= __('The selected entry was deleted successfully!','all-in-one-wp-security-and-firewall');
                $success_msg .= '</strong></p></div>';
                _e($success_msg);
            }
        }
    }
    
    function prepare_items($ignore_pagination = false) {
        /**
         * First, lets decide how many records per page to show
         */
        $per_page = 20;
        $columns = $this->get_columns();
        $hidden = array();
        $sortable = $this->get_sortable_columns();
        $search = isset( $_REQUEST['s'] ) ? sanitize_text_field( $_REQUEST['s'] ) : '';

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

        $this->process_bulk_action();

        global $wpdb;
        $failed_logins_table_name = AIOWPSEC_TBL_FAILED_LOGINS;

        /* -- Ordering parameters -- */
        //Parameters that are going to be used to order the result
        isset($_GET["orderby"]) ? $orderby = strip_tags($_GET["orderby"]) : $orderby = '';
        isset($_GET["order"]) ? $order = strip_tags($_GET["order"]) : $order = '';

        $orderby = !empty($orderby) ? esc_sql($orderby) : 'failed_login_date';
        $order = !empty($order) ? esc_sql($order) : 'DESC';

        $orderby = AIOWPSecurity_Utility::sanitize_value_by_array($orderby, $sortable);
        $order = AIOWPSecurity_Utility::sanitize_value_by_array($order, array('DESC' => '1', 'ASC' => '1'));
        if(empty($search)) {
            $data = $wpdb->get_results("SELECT * FROM " . $failed_logins_table_name . " ORDER BY $orderby $order", ARRAY_A);
        } else {
            $data = $wpdb->get_results($wpdb->prepare("SELECT * FROM $failed_logins_table_name WHERE `user_login` LIKE '%%%s%%' OR `login_attempt_ip` LIKE '%%%s%%' ORDER BY $orderby $order", $search, $search), ARRAY_A);
        }

        if (!$ignore_pagination) {
            $current_page = $this->get_pagenum();
            $total_items = count($data);
            $data = array_slice($data, (($current_page - 1) * $per_page), $per_page);
            $this->set_pagination_args(array(
                'total_items' => $total_items, //WE have to calculate the total number of items
                'per_page' => $per_page, //WE have to determine how many items to show on a page
                'total_pages' => ceil($total_items / $per_page)   //WE have to calculate the total number of pages
            ));
        }
        $this->items = $data;
        }
}
