laconicd/types/account.go
Justin Thompson 4344dc10c7
change photon to aphoton (#476)
* change photon to aphoton

* fix test

* photon docs

* update doc

Co-authored-by: Federico Kunze <federico.kunze94@gmail.com>
2020-08-31 12:40:53 -04:00

152 lines
4.2 KiB
Go

package types
import (
"encoding/json"
"fmt"
"gopkg.in/yaml.v2"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/auth"
"github.com/cosmos/cosmos-sdk/x/auth/exported"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
tmamino "github.com/tendermint/tendermint/crypto/encoding/amino"
ethcmn "github.com/ethereum/go-ethereum/common"
ethcrypto "github.com/ethereum/go-ethereum/crypto"
)
var _ exported.Account = (*EthAccount)(nil)
var _ exported.GenesisAccount = (*EthAccount)(nil)
func init() {
authtypes.RegisterAccountTypeCodec(&EthAccount{}, EthAccountName)
}
// ----------------------------------------------------------------------------
// Main Ethermint account
// ----------------------------------------------------------------------------
// EthAccount implements the auth.Account interface and embeds an
// auth.BaseAccount type. It is compatible with the auth.AccountKeeper.
type EthAccount struct {
*authtypes.BaseAccount `json:"base_account" yaml:"base_account"`
CodeHash []byte `json:"code_hash" yaml:"code_hash"`
}
// ProtoAccount defines the prototype function for BaseAccount used for an
// AccountKeeper.
func ProtoAccount() exported.Account {
return &EthAccount{
BaseAccount: &auth.BaseAccount{},
CodeHash: ethcrypto.Keccak256(nil),
}
}
// EthAddress returns the account address ethereum format.
func (acc EthAccount) EthAddress() ethcmn.Address {
return ethcmn.BytesToAddress(acc.Address.Bytes())
}
// TODO: remove on SDK v0.40
// Balance returns the balance of an account.
func (acc EthAccount) Balance() sdk.Int {
return acc.GetCoins().AmountOf(DenomDefault)
}
// SetBalance sets an account's balance of aphotons
func (acc *EthAccount) SetBalance(amt sdk.Int) {
coins := acc.GetCoins()
diff := amt.Sub(coins.AmountOf(DenomDefault))
switch {
case diff.IsPositive():
// Increase coins to amount
coins = coins.Add(sdk.NewCoin(DenomDefault, diff))
case diff.IsNegative():
// Decrease coins to amount
coins = coins.Sub(sdk.NewCoins(sdk.NewCoin(DenomDefault, diff.Neg())))
default:
return
}
if err := acc.SetCoins(coins); err != nil {
panic(fmt.Errorf("could not set coins for address %s: %w", acc.EthAddress().String(), err))
}
}
type ethermintAccountPretty struct {
Address sdk.AccAddress `json:"address" yaml:"address"`
Coins sdk.Coins `json:"coins" yaml:"coins"`
PubKey []byte `json:"public_key" yaml:"public_key"`
AccountNumber uint64 `json:"account_number" yaml:"account_number"`
Sequence uint64 `json:"sequence" yaml:"sequence"`
CodeHash string `json:"code_hash" yaml:"code_hash"`
}
// MarshalYAML returns the YAML representation of an account.
func (acc EthAccount) MarshalYAML() (interface{}, error) {
alias := ethermintAccountPretty{
Address: acc.Address,
Coins: acc.Coins,
AccountNumber: acc.AccountNumber,
Sequence: acc.Sequence,
CodeHash: ethcmn.Bytes2Hex(acc.CodeHash),
}
if acc.PubKey != nil {
alias.PubKey = acc.PubKey.Bytes()
}
bz, err := yaml.Marshal(alias)
if err != nil {
return nil, err
}
return string(bz), err
}
// MarshalJSON returns the JSON representation of an EthAccount.
func (acc EthAccount) MarshalJSON() ([]byte, error) {
alias := ethermintAccountPretty{
Address: acc.Address,
Coins: acc.Coins,
AccountNumber: acc.AccountNumber,
Sequence: acc.Sequence,
CodeHash: ethcmn.Bytes2Hex(acc.CodeHash),
}
if acc.PubKey != nil {
alias.PubKey = acc.PubKey.Bytes()
}
return json.Marshal(alias)
}
// UnmarshalJSON unmarshals raw JSON bytes into an EthAccount.
func (acc *EthAccount) UnmarshalJSON(bz []byte) error {
acc.BaseAccount = &authtypes.BaseAccount{}
var alias ethermintAccountPretty
if err := json.Unmarshal(bz, &alias); err != nil {
return err
}
if alias.PubKey != nil {
pubKey, err := tmamino.PubKeyFromBytes(alias.PubKey)
if err != nil {
return err
}
acc.BaseAccount.PubKey = pubKey
}
acc.BaseAccount.Coins = alias.Coins
acc.BaseAccount.Address = alias.Address
acc.BaseAccount.AccountNumber = alias.AccountNumber
acc.BaseAccount.Sequence = alias.Sequence
acc.CodeHash = ethcmn.Hex2Bytes(alias.CodeHash)
return nil
}