bitcoin

type BitcoinWallet interface {

	// Returns the type of crytocurrency this wallet implements
	CurrencyCode() string

	// Get the master private key
	MasterPrivateKey() *hd.ExtendedKey

	// Get the master public key
	MasterPublicKey() *hd.ExtendedKey

	// Get the current address for the given purpose
	CurrentAddress(purpose spvwallet.KeyPurpose) btc.Address

	// Get the confirmed and unconfirmed balances
	Balance() (confirmed, unconfirmed int64)

	// Send bitcoins to an external wallet
	Spend(amount int64, addr btc.Address, feeLevel spvwallet.FeeLevel) error

	// Returnt the network parameters
	Params() *chaincfg.Params
}

type ExchangeRates interface {

	// Fetch the exchange rate for the given currency
	// It's OK if this returns from a cache.
	GetExchangeRate(currencyCode string) (float64, error)

	// Update the prices with the current exchange rate before returning.
	GetLatestRate(currencyCode string) (float64, error)

	// Return the number of currency units per coin. For example, in bitcoin
	// this is 100m satoshi per BTC. This is used when converting from fiat
	// to the smaller currency unit.
	UnitsPerCoin() int
}