install.php

<?php

/**
 * Codeigniter asset versioning installer
 *
 * @author     Roland Oduberu <https://github.com/roliod>
 * @license    MIT License
 * @copyright  2018 Roland Oduberu
 * @link       https://github.com/roliod/codeigniter-asset-versioning/releases
 */

$installer = new Installer();
$installer->install();

class Installer
{
    public $helper_to_path;
    public $library_to_path;
    public $helper_from_path;
    public $library_form_path;

    public function __construct()
    {
        $this->library_to_path = "application/libraries/asset.php";
        $this->helper_to_path = "application/helpers/asset_helper.php";
        $this->library_form_path = "vendor/roliod/codeigniter-asset-versioning/src/libraries/asset.php";
        $this->helper_from_path = "vendor/roliod/codeigniter-asset-versioning/src/helpers/asset_helper.php";
    }

    public function install()
    {
        $this->copy_helper();
        $this->copy_library();
    }

    public function copy_helper()
    {
        if ($this->exists($this->helper_to_path)) {
            return $this;
        }

        $this->copy_file($this->helper_from_path, $this->helper_to_path);

        return $this;
    }

    public function copy_library()
    {
        if ($this->exists($this->library_to_path)) {
            return $this;
        }

        $this->copy_file($this->library_form_path, $this->library_to_path);

        return $this;
    }

    /**
     * Check if file exists
     *
     * @param string $file path
     * @return bool
     */
    public function exists($path)
    {
        return (bool) file_exists($path);
    }

    /**
     * Recursive Copy
     *
     * @param string $src
     * @param string $dst
     */
    public function copy_file($from, $to)
    {
        copy($from, $to);
    }
}