package keys

import (
	crypto "github.com/tendermint/go-crypto"
)

// Keybase allows simple CRUD on a keystore, as an aid to signing
type Keybase interface {
	// Sign some bytes
	Sign(name, passphrase string, msg []byte) (crypto.Signature, crypto.PubKey, error)
	// Create a new keypair
	Create(name, passphrase string, algo CryptoAlgo) (info Info, seed string, err error)
	// Recover takes a seedphrase and loads in the key
	Recover(name, passphrase, seedphrase string) (info Info, erro error)
	List() ([]Info, error)
	Get(name string) (Info, error)
	Update(name, oldpass, newpass string) error
	Delete(name, passphrase string) error

	Import(name string, armor string) (err error)
	ImportPubKey(name string, armor string) (err error)
	Export(name string) (armor string, err error)
	ExportPubKey(name string) (armor string, err error)
}

// Info is the public information about a key
type Info struct {
	Name         string        `json:"name"`
	PubKey       crypto.PubKey `json:"pubkey"`
	PrivKeyArmor string        `json:"privkey.armor"`
}

func newInfo(name string, pub crypto.PubKey, privArmor string) Info {
	return Info{
		Name:         name,
		PubKey:       pub,
		PrivKeyArmor: privArmor,
	}
}

// Address is a helper function to calculate the address from the pubkey
func (i Info) Address() []byte {
	return i.PubKey.Address()
}

func (i Info) bytes() []byte {
	bz, err := cdc.MarshalBinaryBare(i)
	if err != nil {
		panic(err)
	}
	return bz
}

func readInfo(bz []byte) (info Info, err error) {
	err = cdc.UnmarshalBinaryBare(bz, &info)
	return
}