<?php

if (!defined('_PS_VERSION_')) {
    exit;
}

function upgrade_module_1_5_0($module)
{
    $newColumn = Db::getInstance()->executeS(
        'SHOW COLUMNS FROM `' . _DB_PREFIX_ . 'ws_customhtml` LIKE \'custom_class\''
    );

    if (!empty($newColumn)) {
        return true;
    }

    $oldColumn = Db::getInstance()->executeS(
        'SHOW COLUMNS FROM `' . _DB_PREFIX_ . 'ws_customhtml` LIKE \'column_class\''
    );

    if (!empty($oldColumn)) {
        return Db::getInstance()->execute(
            'ALTER TABLE `' . _DB_PREFIX_ . 'ws_customhtml`
             CHANGE `column_class` `custom_class` VARCHAR(128) NOT NULL DEFAULT \'\''
        );
    }

    return Db::getInstance()->execute(
        'ALTER TABLE `' . _DB_PREFIX_ . 'ws_customhtml`
         ADD COLUMN `custom_class` VARCHAR(128) NOT NULL DEFAULT \'\' AFTER `content`'
    );
}