Function Encode

flow/encoding.go:97–118

Encode encodes the given value to a string.

(ctx context.Context, cipher aead.Cipher, val any, opts ...CodecOption)

// Encode encodes the given value to a string.
func Encode(ctx context.Context, cipher aead.Cipher, val any, opts ...CodecOption) (s string, err error) {
	// Steps:
	// 1. Encode to JSON
	// 2. GZIP
	// 3. Encrypt with AEAD (XChaCha20-Poly1305) + Base64 URL-encode
	var b bytes.Buffer

	gz, err := gzip.NewWriterLevel(&b, gzip.BestCompression)
	if err != nil {
		return "", err
	}

	if err = json.NewEncoder(gz).Encode(val); err != nil {
		return "", err
	}

	if err = gz.Close(); err != nil {
		return "", err
	}

	return cipher.Encrypt(ctx, b.Bytes(), additionalDataFromOpts(opts...))
}