<?php

namespace NoccyLabs\React\Protocol;

use NoccyLabs\React\Protocol\Json\JsonProtocol;
use NoccyLabs\React\Protocol\Line\LineProtocol;
use PHPUnit\Framework\Attributes\CoversClass;
use React\EventLoop\Loop;
use React\Stream\CompositeStream;
use React\Stream\ThroughStream;

#[CoversClass(ProtocolStream::class)]
#[CoversClass(LineProtocol::class)]
#[CoversClass(JsonProtocol::class)]
class ProtocolStreamTest extends \PHPUnit\Framework\TestCase
{

    public function testSendingFrames()
    {
        $is = new ThroughStream();
        $os = new ThroughStream();
        $cs = new CompositeStream($is, $os);

        $proto = new LineProtocol();
        $stream = new ProtocolStream($cs, $proto);

        $written = null;
        $os->on("data", function ($v) use (&$written) { $written = $v; });

        $stream->send(["helloworld"]);

        $this->assertEquals("helloworld\n", $written);

        $cs->close();
    }

    public function testReceivingFrames()
    {
        $is = new ThroughStream();
        $os = new ThroughStream();
        $cs = new CompositeStream($is, $os);
        $ws = new CompositeStream($os, $is);

        $proto = new LineProtocol();
        $stream = new ProtocolStream($cs, $proto);

        $read = null;
        $stream->on("message", function ($v) use (&$read) { $read = $v; });

        $ws->write("helloworld\n");

        $this->assertEquals([ "helloworld" ], $read);

        $cs->close();
    }

    public function testPartialFrames()
    {
        $is = new ThroughStream();
        $os = new ThroughStream();
        $cs = new CompositeStream($is, $os);
        $ws = new CompositeStream($os, $is);

        $proto = new JsonProtocol(
            frameSeparator: "\n"
        );
        $stream = new ProtocolStream($cs, $proto);

        $read = null;
        $stream->on("message", function ($v) use (&$read) { $read = $v; });

        $ws->write('{"hello":');
        $ws->write('"world"}');
        $ws->write("\n");

        $this->assertEquals([ "hello" => "world" ], $read);

        $cs->close();

    }

}