<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2020 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Component\Signature\Tests;

use Exception;
use Jose\Component\Core\JWK;
use Jose\Component\Signature\JWSLoader;

/**
 * @group JWSLoader
 * @group unit
 *
 * @internal
 */
class JWSLoaderTest extends SignatureTest
{
    /**
     * @var null|JWSLoader
     */
    private $jwsLoader;

    /**
     * @test
     */
    public function theFlattenedTokenCannotBeLoaded(): void
    {
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Unable to load and verify the token.');

        $token = '{"payload":"SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4","protected":"eyJhbGciOiJSUzI1NiIsImtpZCI6ImJpbGJvLmJhZ2dpbnNAaG9iYml0b24uZXhhbXBsZSJ9","signature":"MRjdkly7_-oTPTS3AXP41iQIGKa80A0ZmTuV5MEaHoxnW2e5CZ5NlKtainoFmKZopdHM1O2U4mwzJdQx996ivp83xuglII7PNDi84wnB-BDkoBwA78185hX-Es4JIwmDLJK3lfWRa-XtL0RnltuYv746iYTh_qHRD68BNt1uSNCrUCTJDt5aAE6x8wW1Kt9eRo4QPocSadnHXFxnt8Is9UzpERV0ePPQdLuW3IS_de3xyIrDaLGdjluPxUAhb6L2aXic1U12podGU0KLUQSE_oI-ZnmKJ3F4uOZDnd6QZWJushZ41Axf_fcIe8u9ipH84ogoree7vjbU5y18kDquDg"}';
        $key = new JWK([
            'kty' => 'RSA',
            'kid' => 'bilbo.baggins@hobbiton.example',
            'use' => 'sig',
            'n' => 'n4EPtAOCc9AlkeQHPzHStgAbgs7bTZLwUBZdR8_KuKPEHLd4rHVTeT-O-XV2jRojdNhxJWTDvNd7nqQ0VEiZQHz_AJmSCpMaJMRBSFKrKb2wqVwGU_NsYOYL-QtiWN2lbzcEe6XC0dApr5ydQLrHqkHHig3RBordaZ6Aj-oBHqFEHYpPe7Tpe-OfVfHd1E6cS6M1FZcD1NNLYD5lFHpPI9bTwJlsde3uhGqC0ZCuEHg8lhzwOHrtIQbS0FVbb9k3-tVTU4fg_3L_vniUFAKwuCLqKnS2BYwdq_mzSnbLY7h_qixoR7jig3__kRhuaxwUkRz5iaiQkqgc5gHdrNP5zw',
            'e' => 'AQAB',
        ]);

        $this->getJWSLoader()->loadAndVerifyWithKey($token, $key, $signature);
    }

    /**
     * @test
     */
    public function theTokenCannotBeVerifiedBecauseOfAnUnsupportedAlgorithm(): void
    {
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Unable to load and verify the token.');

        $token = 'eyJhbGciOiJSUzI1NiIsImtpZCI6ImJpbGJvLmJhZ2dpbnNAaG9iYml0b24uZXhhbXBsZSJ9.SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4.MRjdkly7_-oTPTS3AXP41iQIGKa80A0ZmTuV5MEaHoxnW2e5CZ5NlKtainoFmKZopdHM1O2U4mwzJdQx996ivp83xuglII7PNDi84wnB-BDkoBwA78185hX-Es4JIwmDLJK3lfWRa-XtL0RnltuYv746iYTh_qHRD68BNt1uSNCrUCTJDt5aAE6x8wW1Kt9eRo4QPocSadnHXFxnt8Is9UzpERV0ePPQdLuW3IS_de3xyIrDaLGdjluPxUAhb6L2aXic1U12podGU0KLUQSE_oI-ZnmKJ3F4uOZDnd6QZWJushZ41Axf_fcIe8u9ipH84ogoree7vjbU5y18kDquDg';
        $key = new JWK([
            'kty' => 'RSA',
            'kid' => 'bilbo.baggins@hobbiton.example',
            'use' => 'sig',
            'n' => 'n4EPtAOCc9AlkeQHPzHStgAbgs7bTZLwUBZdR8_KuKPEHLd4rHVTeT-O-XV2jRojdNhxJWTDvNd7nqQ0VEiZQHz_AJmSCpMaJMRBSFKrKb2wqVwGU_NsYOYL-QtiWN2lbzcEe6XC0dApr5ydQLrHqkHHig3RBordaZ6Aj-oBHqFEHYpPe7Tpe-OfVfHd1E6cS6M1FZcD1NNLYD5lFHpPI9bTwJlsde3uhGqC0ZCuEHg8lhzwOHrtIQbS0FVbb9k3-tVTU4fg_3L_vniUFAKwuCLqKnS2BYwdq_mzSnbLY7h_qixoR7jig3__kRhuaxwUkRz5iaiQkqgc5gHdrNP5zw',
            'e' => 'AQAB',
        ]);

        $this->getJWSLoader()->loadAndVerifyWithKey($token, $key, $signature);
    }

    /**
     * @test
     */
    public function theTokenCannotBeVerifiedBecauseOfABadKey(): void
    {
        $this->expectException(Exception::class);
        $this->expectExceptionMessage('Unable to load and verify the token.');

        $token = 'eyJhbGciOiJIUzI1NiIsImtpZCI6IjAxOGMwYWU1LTRkOWItNDcxYi1iZmQ2LWVlZjMxNGJjNzAzNyJ9.SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4.s0h6KThzkfBBBkLspW1h84VsJZFTsPPqMDA7g1Md7p0';
        $key = new JWK([
            'kty' => 'RSA',
            'kid' => 'bilbo.baggins@hobbiton.example',
            'use' => 'sig',
            'n' => 'n4EPtAOCc9AlkeQHPzHStgAbgs7bTZLwUBZdR8_KuKPEHLd4rHVTeT-O-XV2jRojdNhxJWTDvNd7nqQ0VEiZQHz_AJmSCpMaJMRBSFKrKb2wqVwGU_NsYOYL-QtiWN2lbzcEe6XC0dApr5ydQLrHqkHHig3RBordaZ6Aj-oBHqFEHYpPe7Tpe-OfVfHd1E6cS6M1FZcD1NNLYD5lFHpPI9bTwJlsde3uhGqC0ZCuEHg8lhzwOHrtIQbS0FVbb9k3-tVTU4fg_3L_vniUFAKwuCLqKnS2BYwdq_mzSnbLY7h_qixoR7jig3__kRhuaxwUkRz5iaiQkqgc5gHdrNP5zw',
            'e' => 'AQAB',
        ]);

        $this->getJWSLoader()->loadAndVerifyWithKey($token, $key, $signature);
    }

    /**
     * @test
     */
    public function theTokenCanBeVerified(): void
    {
        $token = 'eyJhbGciOiJIUzI1NiIsImtpZCI6IjAxOGMwYWU1LTRkOWItNDcxYi1iZmQ2LWVlZjMxNGJjNzAzNyJ9.SXTigJlzIGEgZGFuZ2Vyb3VzIGJ1c2luZXNzLCBGcm9kbywgZ29pbmcgb3V0IHlvdXIgZG9vci4gWW91IHN0ZXAgb250byB0aGUgcm9hZCwgYW5kIGlmIHlvdSBkb24ndCBrZWVwIHlvdXIgZmVldCwgdGhlcmXigJlzIG5vIGtub3dpbmcgd2hlcmUgeW91IG1pZ2h0IGJlIHN3ZXB0IG9mZiB0by4.s0h6KThzkfBBBkLspW1h84VsJZFTsPPqMDA7g1Md7p0';
        $key = new JWK([
            'kty' => 'oct',
            'kid' => '018c0ae5-4d9b-471b-bfd6-eef314bc7037',
            'use' => 'sig',
            'alg' => 'HS256',
            'k' => 'hJtXIZ2uSN5kbQfbtTNWbpdmhkV8FJG-Onbc6mxCcYg',
        ]);

        $jws = $this->getJWSLoader()->loadAndVerifyWithKey($token, $key, $signature);
        static::assertEquals("It\xe2\x80\x99s a dangerous business, Frodo, going out your door. You step onto the road, and if you don't keep your feet, there\xe2\x80\x99s no knowing where you might be swept off to.", $jws->getPayload());
        static::assertEquals(0, $signature);
    }

    private function getJWSLoader(): JWSLoader
    {
        if (null === $this->jwsLoader) {
            $this->jwsLoader = $this->getJWSLoaderFactory()->create(['jws_compact'], ['HS256']);
        }

        return $this->jwsLoader;
    }
}