crypto

type PubKeyClient interface {
	// GetPubKeyFromAddress returns the public key of the given account address
	// if it exists.
	GetPubKeyFromAddress(ctx context.Context, address string) (cryptotypes.PubKey, error)
}

type RingCache interface {
	RingClient

	// GetCachedAddresses returns the addresses of the applications that are
	// currently cached in the ring cache.
	GetCachedAddresses() []string
	// Start starts the ring cache, it takes a cancellable context and, in a
	// separate goroutine, listens for on-chain delegation events and invalidates
	// the cache if the redelegation event's AppAddress is stored in the cache.
	Start(ctx context.Context)
	// Stop stops the ring cache by unsubscribing from on-chain delegation events.
	// And clears the cache, so that it no longer contains any rings,
	Stop()
}

type RingClient interface {
	// GetRingForAddress returns the ring for the given application address if
	// it exists.
	GetRingForAddress(ctx context.Context, appAddress string) (*ring.Ring, error)

	// VerifyRelayRequestSignature verifies the relay request signature against
	// the ring for the application address in the relay request.
	VerifyRelayRequestSignature(ctx context.Context, relayRequest *types.RelayRequest) error
}