asset

type PostFileRequest struct {
	Action      string                 `json:"action"`
	ExtraFields map[string]interface{} `json:"extra-fields,omitempty"`
}

type SignatureParser interface {
	ParseSignature(signed string, name string, expiredAt time.Time) (valid bool, err error)
}

type Store interface {
	GetFileReader(name string) (io.ReadCloser, error)
	PutFileReader(name string, src io.Reader, length int64, contentType string) error
	GeneratePostFileRequest(name string) (*PostFileRequest, error)
}

type URLSigner interface {
	// SignedURL returns a url with access to the named file. If asset
	// store is private, the returned URL is a signed one, allowing access
	// to asset for a short period.
	SignedURL(name string) (string, error)
	IsSignatureRequired() bool
}