<?php

declare(strict_types=1);

namespace Blax\WebRtc\Tests\Fixtures;

use Blax\WebRtc\Contracts\RealtimeTransport;

/** A RealtimeTransport double: records sent frames and replays a scripted inbound sequence. */
final class ScriptedRealtimeTransport implements RealtimeTransport
{
    /** @var array<int,string> */
    public array $sent = [];

    public bool $closed = false;

    /** @param array<int,string> $inbound scripted JSON frames handed back by receive() */
    public function __construct(private array $inbound) {}

    public function send(string $text): void
    {
        $this->sent[] = $text;
    }

    public function receive(): ?string
    {
        return array_shift($this->inbound); // null once exhausted
    }

    public function close(): void
    {
        $this->closed = true;
    }

    /** @return array<int,string> the `type` of each sent frame, in order */
    public function sentTypes(): array
    {
        return array_map(static fn ($s) => (string) (json_decode($s, true)['type'] ?? '?'), $this->sent);
    }
}