package e2ee

// backends is a process-wide registry of available Backend implementations,
// keyed by Backend.Name(). Backends self-register from an init() function
// in their own package (mirroring the self-registration idiom already used
// by xmpp/extensions for stanza payload types), so importing a backend
// package for its side effect is what makes it available here.
var backends = map[string]Backend{}

// Register adds b to the registry, keyed by b.Name(). Call from the
// backend package's own init().
func Register(b Backend) {
	backends[b.Name()] = b
}

// Get looks up a registered backend by name.
func Get(name string) (Backend, bool) {
	b, ok := backends[name]
	return b, ok
}