<?php

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

// get the current value of the option
$tools4wp_license = get_option('tools4wp_license');

// check if $tools4wp_license is an array
if (is_array($tools4wp_license)) {

    // check if the key exists
    if (!(array_key_exists('tools4wp_licensed', $tools4wp_license))) {

        // update the value of the option
        $tools4wp_license['tools4wp_licensed'] = 'false';
    } 

    // save the updated option to the database
    update_option('tools4wp_license', $tools4wp_license);
} else {

    // create a new key with the value of 'false'
    $tools4wp_license = array('tools4wp_licensed' => 'false');
    update_option('tools4wp_license', $tools4wp_license);
}
add_filter( 'plugin_action_links', 'add_license_link', 10, 2 );

function add_license_link( $links, $file ) {
    $t4wp_name = get_option('t4wp_white');
    $short_name = $t4wp_name['short_name'] ?? 'tools4wp';
    if ( strpos( $file, 'tools4wp' ) !== false ) {
        $links[] = '<a href="' . admin_url( 'tools.php?page=' . $short_name . '_options' ) . '">Settings</a>';
    }
    return $links;
}