package types

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

// Account is a standard account using a sequence number for replay protection
// and a pubkey for authentication.
type Account interface {
	GetAddress() crypto.Address
	SetAddress(crypto.Address) error // errors if already set.

	GetPubKey() crypto.PubKey // can return nil.
	SetPubKey(crypto.PubKey) error

	GetSequence() int64
	SetSequence(int64) error

	GetCoins() Coins
	SetCoins(Coins)

	Get(key interface{}) (value interface{}, err error)
	Set(key interface{}, value interface{}) error
}

// AccountStore indexes accounts by address.
type AccountStore interface {
	NewAccountWithAddress(ctx Context, addr crypto.Address) Account
	GetAccount(ctx Context, addr crypto.Address) Account
	SetAccount(ctx Context, acc Account)
}

// new(AccountStoreKey) is a capabilities key.
type AccountStoreKey struct{}