<?php

namespace Shetabit\Multipay;

use Ramsey\Uuid\Uuid;
use Shetabit\Multipay\Traits\HasDetail;

class Invoice
{
    use HasDetail;

    /**
     * invoice's unique universal id (uuid)
     *
     * @var string
     */
    protected $uuid;

    /**
     * Amount
     *
     * @var int|float
     */
    protected $amount = 0;

    /**
     * invoice's transaction id
     *
     * @var string
     */
    protected $transactionId;

    /**
     * @var string
     */
    protected $driver;

    /**
     * Invoice constructor.
     *
     * @throws \Exception
     */
    public function __construct()
    {
        $this->uuid();
    }

    /**
     * Set invoice uuid
     *
     * @param $uuid|null
     *
     * @throws \Exception
     */
    public function uuid($uuid = null)
    {
        if (empty($uuid)) {
            $uuid = Uuid::uuid4()->toString();
        }

        $this->uuid = $uuid;
        return $this;
    }

    /**
     * Get invoice uuid
     *
     * @return string
     */
    public function getUuid()
    {
        return $this->uuid;
    }

    /**
     * Set the amount of invoice
     *
     * @param $amount
     *
     * @return $this
     *
     * @throws \Exception
     */
    public function amount($amount)
    {
        if (!is_numeric($amount)) {
            throw new \Exception('Amount value should be a number (integer or float).');
        }
        $this->amount = $amount;

        return $this;
    }

    /**
     * Get the value of invoice
     *
     * @return int|float
     */
    public function getAmount()
    {
        return $this->amount;
    }

    /**
     * set transaction id
     *
     * @param $id
     *
     * @return $this
     */
    public function transactionId($id)
    {
        $this->transactionId = $id;

        return $this;
    }

    /**
     * Get the value of transaction's id
     *
     * @return string
     */
    public function getTransactionId()
    {
        return $this->transactionId;
    }

    /**
     * Set the value of driver
     *
     * @param $driver
     *
     * @return $this
     */
    public function via($driver)
    {
        $this->driver = $driver;

        return $this;
    }

    /**
     * Get the value of driver
     *
     * @return string
     */
    public function getDriver()
    {
        return $this->driver;
    }
}