<?php

namespace InnocardLoyalty;

class Terminal
{
    const TYPE_POS        = 0; // POS Terminal
    const TYPE_E_COMMERCE = 1; // E-Commerce / Datatrans
    const TYPE_MERCHANT   = 2; // Virtual Terminal Merchant
    const TYPE_E_SHOP     = 3; // Virtual Terminal E-Shop / Voucher shop
    const TYPE_MOBILE_APP = 4; // Virtual Terminal Mobile App

    const STATUS_ACTIVE = 1;

    protected static $allowed_types = [
        self::TYPE_POS        => 'POS Terminal',
        self::TYPE_E_COMMERCE => 'E-Commerce / Datatrans Terminal',
        self::TYPE_MERCHANT   => 'Virtual Terminal Merchant',
        self::TYPE_E_SHOP     => 'Virtual Terminal E-Shop / Voucher shop',
        self::TYPE_MOBILE_APP => 'Virtual Terminal Mobile App',
    ];

    /**
     * @param int $type
     * @return array
     * @throws InnocadLoyaltyException
     */
    public static function get($type = null)
    {
        if (null !== $type && !array_key_exists($type, self::$allowed_types)) {
            throw new InnocadLoyaltyException('Unknown Terminal Type');
        }

        $userSessionID = User::signin();
        $response = Request::get('LOIN/Terminal', ['UserSessionID' => $userSessionID]);
        User::signout($userSessionID);

        if (Request::RESPONSE_STATUS_OK != $response['LOINTerminalSelect']['Status']) {
            throw new InnocadLoyaltyException($response['LOINTerminalSelect']['UserMessage'], $response['LOINTerminalSelect']['Status']);
        }

        if (!$response['LOINTerminalSelect']['RowCount']) {
            throw new InnocadLoyaltyException('There are no terminals found');
        }

        $terminals = $response['LOINTerminalSelect']['Terminals'];

        if (null !== $type) {
            foreach ($terminals as $terminal) {
                if ($type == $terminal['Terminal']['TerminalType'] && self::STATUS_ACTIVE == $terminal['Terminal']['Status']) {
                    return $terminal['Terminal'];
                }
            }
            throw new InnocadLoyaltyException('There is no active "' . self::$allowed_types[$type] . '"');
        }

        return $terminals;
    }
}