const (
	HTTPAuthHeaderSecretPrefix = "HTTP_AUTH_HEADER_"
	HTTPAuthTokenSecretPrefix  = "HTTP_AUTH_TOKEN_"
)

type HTTPIdentifier struct {
	TLS              bool
	URL              string
	Checksum         digest.Digest
	Filename         string
	Perm             int
	UID              int
	GID              int
	AuthHeaderSecret string
	Header           []HeaderField
	VerifySignature  *HTTPSignatureVerifyOptions
}

type HTTPSignatureVerifyOptions struct {
	PubKey    []byte
	Signature []byte
}

type HeaderField struct {
	Name  string
	Value string
}

type Metadata struct {
	Digest           digest.Digest
	Filename         string
	LastModified     *time.Time
	ChecksumResponse *MetadataChecksumResponse
}

type MetadataChecksumAlgo int

const (
	MetadataChecksumAlgoSHA256 MetadataChecksumAlgo = iota
	MetadataChecksumAlgoSHA384
	MetadataChecksumAlgoSHA512
)

type MetadataChecksumRequest struct {
	Algo   MetadataChecksumAlgo
	Suffix []byte
}

type MetadataChecksumResponse struct {
	Digest string
	Suffix []byte
}

type MetadataOpts struct {
	ChecksumReq *MetadataChecksumRequest
}

type Opt struct {
	CacheAccessor cache.Accessor
	Transport     http.RoundTripper
}

type Source struct {
	// contains filtered or unexported fields
}