class Get
{
    /**
     * AmazonPay module object
     *
     * @var AmazonPay
     */
    private $module;

    /**
     * Amazon Pay order object
     *
     * @var OrderMeta|null
     */
    private $order;

    /**
     * Sets `$module` member var with dependency injection.
     *
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @param AmazonPay      $module
     * @param OrderMeta|null $order
     * @return void
     */
    public function __construct(AmazonPay $module, OrderMeta $order = null) {
        $this->module = $module;
        $this->order = $order;
    }

    /**
     * Gets a Charge
     *
     * @see https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-api-v2/charge.html#get-charge
     * @author Evan D Shaw <evandanielshaw@gmail.com>
     * @param string $chargeId Charge ID
     * @return array
     * @throws InvalidArgumentException Thrown by `getAmazonClient`.
     */
    public function get($chargeId) {
        try {
            $client = $this->module->getAmazonClient();
            $result = $client->getCharge($chargeId);
            if ($this->module->errors->hasError($result)) {
                return $this->module->errors->getAmzErrorResponse($result);
            }
        } catch (\Exception $e) {
            return $this->module->errors->getErrorResponse(
                GenericErrorStore::AMAZON_PAY_SDK_CLIENT_EXCEPTION,
                [$e->getMessage()]
            );
        }

        if ($this->order instanceof OrderMeta) {
            $oldChargeState = $this->order->getChargeState();
            $response = json_decode($result['response'], true);
            $details = $response['statusDetails'];
            $this->order->updateChargeState(
                new State(
                    $details['state'],
                    $details['reasonCode'],
                    $details['reasonDescription']
                )
            );

            if ($details['state'] !== $oldChargeState->getState()) {
                $amount = null;
                if ($details['state'] === State::CAPTURED || $details['state'] === State::AUTHORIZED) {
                    $amount = $this->order->getMostRecentTransactionAmount();
                }
                if (!empty(State::STATE_TO_LOG_ACTION[$details['state']])) {
                    (new Logger())->logApiResponse(new Log(
                        $this->order->getChargePermissionId(),
                        State::STATE_TO_LOG_ACTION[$details['state']],
                        Log::RESPONSE_OK,
                        $amount
                    ));
                }
            }
        }

        return $result;
    }
}