Core —— AT Protocol 核心操作

use Revolution\Bluesky\Core\CBOR;

$record = [
    '$type'     => 'app.bsky.feed.post',
    'text'      => 'Hello, Bluesky!',
    'createdAt' => '2025-01-01T00:00:00.000Z',
];

$bytes = CBOR::encode($record); // 二进制字符串

use Revolution\Bluesky\Core\CBOR;

// 解码单个 item
$data = CBOR::decode($bytes);

// 解码流开头的 item，并返回剩余部分
[$item, $remainder] = CBOR::decodeFirst($bytes);

// 解码流中所有 item
$items = CBOR::decodeAll($bytes);

use Revolution\Bluesky\Core\CBOR;
use Revolution\Bluesky\Core\CID;

$record = data_get($block, 'value');
$cbor   = CBOR::encode($record);
$bool   = CID::verify($cbor, data_get($block, 'cid'));

use Revolution\Bluesky\Core\CID;

// 从数据生成 CID
$cid = CID::encode($data, CID::DAG_CBOR); // 用于 record
$cid = CID::encode($data, CID::RAW);      // 二进制（图片等）

// 校验 CID
$bool = CID::verify($data, $cid, CID::DAG_CBOR);
$bool = CID::verify($file, $cid, CID::RAW);

// 解析 CID
$decoded = CID::decode($cid); // ['version', 'codec', 'hash']

// 查看 CID 版本
$version = CID::version($cid); // 0 or 1

// 与字节表示互转
$bytes = CID::decodeBytes($cid);
$cid   = CID::encodeBytes($bytes);

use Revolution\Bluesky\Core\CAR;

// 解码整个 CAR 文件（root 与全部 block）
['roots' => $roots, 'blocks' => $blocks] = CAR::decode($carData);

// 仅获取 root CID
$roots = CAR::decodeRoots($carData);

// 遍历 block
foreach (CAR::blockIterator($carData) as [$cid, $block]) {
    // $cid: CID 字符串，$block: 二进制数据
}

// 作为 record map 获取
foreach (CAR::blockMap($carData) as $key => $record) {
    // $key: record key, $record: 已解码的数组
}

use Revolution\Bluesky\Core\CAR;
use Revolution\Bluesky\Crypto\DidKey;
use Revolution\Bluesky\Facades\Bluesky;
use Revolution\Bluesky\Support\DidDocument;

$did = 'did:plc:***';

$didDoc    = DidDocument::make(Bluesky::identity()->resolveDID($did)->json());
$publicKey = DidKey::parse($didDoc->publicKey());

$signed    = CAR::signedCommit($carData);
$bool      = CAR::verifySignedCommit($signed, $publicKey);

例: 3jujm55ngfc24

use Revolution\Bluesky\Core\TID;

// 生成下一个 TID
$tid = TID::next();
echo $tid->toString(); // 类似 "3jujm55ngfc24" 的字符串

// 从字符串构建 TID
$tid = TID::fromStr('3jujm55ngfc24');

// 从时间戳（微秒）和 clock ID 构建
$tid = TID::fromTime(microtime(true) * 1000000, 0);

use Revolution\Bluesky\Core\Varint;

// 对整数编码
$bytes = Varint::encode(1234);

// 从流中解码（返回值与消费的字节数）
[$value, $bytesRead] = Varint::decodeStream($stream);

// 测试里也可以直接使用
$bytes = CBOR::encode(['text' => 'Hello']);
$cid   = CID::encode($bytes, CID::DAG_CBOR);
$bool  = CID::verify($bytes, $cid);