<?php

namespace Tests\Providers\Qr;

use PHPUnit\Framework\TestCase;
use RobThree\Auth\TwoFactorAuth;
use RobThree\Auth\TwoFactorAuthException;

class IQRCodeProviderTest extends TestCase
{
    /**
     * @param string $datauri
     *
     * @return null|array
     */
    private function DecodeDataUri($datauri)
    {
        if (preg_match('/data:(?P<mimetype>[\w\.\-\/]+);(?P<encoding>\w+),(?P<data>.*)/', $datauri, $m) === 1) {
            return array(
                'mimetype' => $m['mimetype'],
                'encoding' => $m['encoding'],
                'data' => base64_decode($m['data'])
            );
        }

        return null;
    }

    /**
     * @return void
     */
    public function testTotpUriIsCorrect()
    {
        $qr = new TestQrProvider();

        $tfa = new TwoFactorAuth('Test&Issuer', 6, 30, 'sha1', $qr);
        $data = $this->DecodeDataUri($tfa->getQRCodeImageAsDataUri('Test&Label', 'VMR466AB62ZBOKHE'));
        $this->assertEquals('test/test', $data['mimetype']);
        $this->assertEquals('base64', $data['encoding']);
        $this->assertEquals('otpauth://totp/Test%26Label?secret=VMR466AB62ZBOKHE&issuer=Test%26Issuer&period=30&algorithm=SHA1&digits=6@200', $data['data']);
    }

    /**
     * @return void
     */
    public function testGetQRCodeImageAsDataUriThrowsOnInvalidSize()
    {
        $qr = new TestQrProvider();

        $tfa = new TwoFactorAuth('Test', 6, 30, 'sha1', $qr);

        $this->expectException(TwoFactorAuthException::class);

        $tfa->getQRCodeImageAsDataUri('Test', 'VMR466AB62ZBOKHE', 0);
    }
}