<?php

/**
 * This file is part of the Elephant.io package
 *
 * For the full copyright and license information, please view the LICENSE file
 * that was distributed with this source code.
 *
 * @copyright Wisembly
 * @license   http://www.opensource.org/licenses/MIT-License MIT License
 */

namespace ElephantIO\Test\Websocket;

use ElephantIO\Parser\Websocket\Decoder;
use PHPUnit\Framework\TestCase;
use ReflectionProperty;

class DecoderTest extends TestCase
{
    /** @dataProvider providerUnmaskedPayload */
    public function testUnmaskedPayload($payload, $expected)
    {
        $decoder = new Decoder(hex2bin($payload));

        $this->assertSame($expected, (string) $decoder);

        $this->assertPropSame(0x1, $decoder, 'fin');
        $this->assertPropSame([0x0, 0x0, 0x0], $decoder, 'rsv');
        $this->assertPropSame(false, $decoder, 'mask');
        $this->assertPropSame("\x00\x00\x00\x00", $decoder, 'maskKey');
        $this->assertPropSame(Decoder::OPCODE_TEXT, $decoder, 'opCode');
    }

    public function providerUnmaskedPayload()
    {
        $short = 'foo';
        $long = <<<EOF
This payload length is over 125 chars, hence the length part inside the payload
should now be 16 bits in length. There are still a little bit less than that to
satisfy the fact that we need more than 125 characters, but less than 65536. So
this should do the trick...
EOF;

        $shortMask = '8103666f6f';
        $longMask = '817e010b54686973207061796c6f6164206c656e677468206973206f76'
                   . '6572203132352063686172732c2068656e636520746865206c656e6774'
                   . '68207061727420696e7369646520746865207061796c6f61640a73686f'
                   . '756c64206e6f77206265203136206269747320696e206c656e6774682e'
                   . '20546865726520617265207374696c6c2061206c6974746c6520626974'
                   . '206c657373207468616e207468617420746f0a73617469736679207468'
                   . '6520666163742074686174207765206e656564206d6f7265207468616e'
                   . '2031323520636861726163746572732c20627574206c65737320746861'
                   . '6e2036353533362e20536f0a746869732073686f756c6420646f207468'
                   . '6520747269636b2e2e2e';

        return [[$shortMask, $short],
            [$longMask, $this->fixEol($long)]];
    }

    /**
     * Test with a masked payload (the masked being "?EV!")
     *
     * @dataProvider providerMaskedPayload
     */
    public function testMaskedPayload($payload, $expected)
    {
        $decoder = new Decoder(hex2bin($payload));

        $this->assertSame($expected, (string) $decoder);

        $this->assertPropSame(0x1, $decoder, 'fin');
        $this->assertPropSame([0x0, 0x0, 0x0], $decoder, 'rsv');
        $this->assertPropSame(true, $decoder, 'mask');
        $this->assertPropSame('?EV!', $decoder, 'maskKey');
        $this->assertPropSame(Decoder::OPCODE_TEXT, $decoder, 'opCode');
    }

    public function providerMaskedPayload()
    {
        $short = 'foo';
        $long = <<<EOF
This payload length is over 125 chars, hence the length part inside the payload
should now be 16 bits in length. There are still a little bit less than that to
satisfy the fact that we need more than 125 characters, but less than 65536. So
this should do the trick...
EOF;

        $shortMask = '81833f455621592a39';
        $longMask = '81fe010b3f4556216b2d3f521f353758532a37451f29334f58313e0156'
                   . '36764e492024010e7763015c2d37534c6976495a2b35441f313e441f29'
                   . '334f58313e014f2424551f2c3852562133014b2d33014f242f4d502432'
                   . '2b4c2d39545321764f503276435a6567171f273f554c653f4f1f29334f'
                   . '58313e0f1f113e444d2076404d2076524b2c3a4d1f24764d5631224d5a'
                   . '6534484b653a444c367655572438014b2d37551f31392b4c2422484c23'
                   . '2f014b2d3301592435551f313e404b6521441f2b33445b653b4e4d2076'
                   . '55572438010e7763015c2d37535e2622444d367a015d30220153202552'
                   . '1f313e40516560140a76600f1f16392b4b2d3f521f363e4e4a2932015b'
                   . '2a7655572076554d2c354a116b78';

        return [[$shortMask, $short], // data encoded with < 125 characters
            [$longMask, $this->fixEol($long)]];  // data encoded with > 125 characters but < 65536 characters
    }

    private function assertPropSame($expected, $object, $property)
    {
        $refl = new ReflectionProperty(Decoder::class, $property);
        $refl->setAccessible(true);

        $this->assertSame($expected, $refl->getValue($object));
    }

    private function fixEol($str, $from = "\r\n", $to = "\n")
    {
        if (false !== strpos($str, $from)) {
            $str = str_replace($from, $to, $str);
        }

        return $str;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MjU4MTM4OTMxMzczNTk4NSAyMDE1MDUyODA5MTQzMDMxIDM4ODE4NjczNjM4MTY3OTI=