<?php

declare (strict_types = 1);

namespace TonicForHealth\PaymentProcessing\Domain\PaymentProcessingContext\Entity\PurchaseTransaction;

/**
 * Domain value object for a purchase transaction status.
 */
class PurchaseTransactionStatus
{
    const STATUS_CODE_PENDING = 1;
    const STATUS_CODE_APPROVED = 2;
    const STATUS_CODE_DECLINED = 3;

    /**
     * @var string[]
     */
    private static $statusTexts = [
        self::STATUS_CODE_PENDING => 'Pending',
        self::STATUS_CODE_APPROVED => 'Approved',
        self::STATUS_CODE_DECLINED => 'Declined',
    ];

    /**
     * @var int
     */
    private $statusCode;

    /**
     * @return PurchaseTransactionStatus
     */
    public static function createPending(): self
    {
        return new self(self::STATUS_CODE_PENDING);
    }

    /**
     * @return PurchaseTransactionStatus
     */
    public static function createApproved(): self
    {
        return new self(self::STATUS_CODE_APPROVED);
    }

    /**
     * @return PurchaseTransactionStatus
     */
    public static function createDeclined(): self
    {
        return new self(self::STATUS_CODE_DECLINED);
    }

    /**
     * @return bool
     */
    public function isPending(): bool
    {
        return self::STATUS_CODE_PENDING === $this->statusCode;
    }

    /**
     * @return bool
     */
    public function isApproved(): bool
    {
        return self::STATUS_CODE_APPROVED === $this->statusCode;
    }

    /**
     * @return bool
     */
    public function isDeclined(): bool
    {
        return self::STATUS_CODE_DECLINED === $this->statusCode;
    }

    /**
     * @param int $statusCode
     */
    private function __construct(int $statusCode)
    {
        $this->statusCode = $statusCode;
    }

    /**
     * @return int
     *
     * @deprecated
     */
    public function getStatusCode(): int
    {
        return $this->statusCode;
    }

    /**
     * @return string
     */
    public function __toString(): string
    {
        return self::$statusTexts[$this->statusCode];
    }
}