<?php

/**
 *
 * EE_DMS_4_8_0_gateways
 *
 * @package         Event Espresso
 * @subpackage
 * @author              Mike Nelson
 *
 * Migrates line items that used to have LIN_code="tickets" to "pre-tax-total"
 */
class EE_DMS_4_8_0_pretax_totals extends EE_Data_Migration_Script_Stage
{

    protected $_line_item_table_name;


    /**
     * Just initializes the status of the migration
     */
    public function __construct()
    {
        global $wpdb;
        $this->_line_item_table_name = $wpdb->prefix."esp_line_item";
        $this->_pretty_name = __('Pre-tax total line items', 'event_espresso');
        parent::__construct();
    }



    /**
     * Counts the records to migrate; the public version may cache it
     * @return int
     */
    protected function _count_records_to_migrate()
    {
        return 1;
    }



    /**
     * IMPORTANT: if an error is encountered, or everything is finished, this stage should update its status property accordingly.
     * Note: it should not alter the count of items migrated. That is done in the public function that calls this.
     * IMPORTANT: The count of items migrated should ONLY be less than $num_items_to_migrate when it's the last migration step, otherwise it
     * should always return $num_items_to_migrate. (Eg, if we're migrating attendees rows from the database, and $num_items_to_migrate is set to 50,
     * then we SHOULD actually migrate 50 rows,but at very least we MUST report/return 50 items migrated)
     * @param int $num_items_to_migrate
     * @return int number of items ACTUALLY migrated
     */
    protected function _migration_step($num_items_to_migrate = 50)
    {
        global $wpdb;
        $rows_updated = $wpdb->update(
            $this->_line_item_table_name,
            array( 'LIN_code' => 'pre-tax-subtotal' ),
            array( 'LIN_code' => 'tickets' ),
            array( '%s' ),
            array( '%s' )
        );
        $this->set_completed();
        return 1;
    }
}
