opensourcepos/app/Models/Tokens/Token.php

<?php

namespace App\Models\Tokens;

use CodeIgniter\Model;

/**
 * Token class
 */
abstract class Token extends Model
{
	protected string $value = '';

	/**
	 * @param string $value
	 */
	public function __construct(string $value = '')
	{
		parent::__construct();

		$this->value = $value;
	}

	/**
	 * @return array
	 */
	public static function get_barcode_tokens(): array
	{
		return [
			new Token_barcode_price(),
			new Token_barcode_weight(),
			new Token_barcode_ean()
		];
	}

	/**
	 * @return array
	 */
	public static function get_tokens(): array
	{
		return [
			new Token_customer(),
			new Token_invoice_count(),
			new Token_invoice_sequence(),
			new Token_quote_sequence(),
			new Token_suspended_invoice_count(),
			new Token_quote_sequence(),
			new Token_work_order_sequence(),
			new Token_year_invoice_count(),
			new Token_year_quote_count()
		];
	}

	/**
	 * @return string
	 */
	abstract public function token_id(): string;

	/**
	 * @return mixed
	 */
	abstract public function get_value();

	/**
	 * @param $token_id
	 * @return bool
	 */
	public function matches($token_id): bool
	{
		return $this->token_id() == $token_id;
	}

	/**
	 * @param string $text
	 * @return string
	 */
	public function replace_token(string $text): string    //TODO: This function is never called in the code
	{
		if(strstr($text, $this->token_id()))
		{
			return str_replace($this->token_id(), $this->get_value(), $text);
		}

		return $text;
	}
}