<?php

declare(strict_types=1);

namespace Blax\WebRtc\Tests\Fixtures;

use Blax\WebRtc\Contracts\RecordingStore;

final class MemoryRecordingStore implements RecordingStore
{
    /** @var array<string,string> "room|peer" => concatenated bytes */
    public array $data = [];

    /** @var array<int,string> finalized keys */
    public array $finalized = [];

    public function append(string $roomId, string $peerId, string $chunk): void
    {
        $key = "{$roomId}|{$peerId}";
        $this->data[$key] = ($this->data[$key] ?? '').$chunk;
    }

    public function finalize(string $roomId, string $peerId): ?string
    {
        $key = "{$roomId}|{$peerId}";
        if (! isset($this->data[$key])) {
            return null;
        }
        $this->finalized[] = $key;

        return "mem://{$key}";
    }
}