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package ethui
import (
"encoding/hex"
"fmt"
"github.com/ethereum/eth-go/ethchain"
"github.com/ethereum/eth-go/ethutil"
"github.com/ethereum/go-ethereum/utils"
"github.com/obscuren/secp256k1-go"
"strings"
)
type Contract struct {
object *ethchain.StateObject
}
func NewContract(object *ethchain.StateObject) *Contract {
return &Contract{object: object}
}
func (c *Contract) GetStorage(address string) string {
// Because somehow, even if you return nil to QML it
// still has some magical object so we can't rely on
// undefined or null at the QML side
if c.object != nil {
val := c.object.GetMem(ethutil.Big("0x" + address))
return val.BigInt().String()
}
return ""
}
func (c *Contract) Value() string {
if c.object != nil {
return c.object.Amount.String()
}
return ""
}
type EthLib struct {
stateManager *ethchain.StateManager
blockChain *ethchain.BlockChain
txPool *ethchain.TxPool
Db *Debugger
}
func (lib *EthLib) ImportAndSetPrivKey(privKey string) bool {
fmt.Println(privKey)
mnemonic := strings.Split(privKey, " ")
if len(mnemonic) == 24 {
fmt.Println("Got mnemonic key, importing.")
key := ethutil.MnemonicDecode(mnemonic)
utils.ImportPrivateKey(key)
} else if len(mnemonic) == 1 {
fmt.Println("Got hex key, importing.")
utils.ImportPrivateKey(privKey)
} else {
fmt.Println("Did not recognise format, exiting.")
return false
}
return true
}
func (lib *EthLib) CreateAndSetPrivKey() (string, string, string, string) {
pub, prv := secp256k1.GenerateKeyPair()
pair := ðutil.Key{PrivateKey: prv, PublicKey: pub}
ethutil.Config.Db.Put([]byte("KeyRing"), pair.RlpEncode())
mne := ethutil.MnemonicEncode(ethutil.Hex(prv))
mnemonicString := strings.Join(mne, " ")
return mnemonicString, fmt.Sprintf("%x", pair.Address()), fmt.Sprintf("%x", prv), fmt.Sprintf("%x", pub)
}
func (lib *EthLib) GetKey() string {
return ethutil.Hex(ethutil.Config.Db.GetKeys()[0].Address())
}
func (lib *EthLib) GetStateObject(address string) *Contract {
stateObject := lib.stateManager.ProcState().GetContract(ethutil.FromHex(address))
if stateObject != nil {
return NewContract(stateObject)
}
// See GetStorage for explanation on "nil"
return NewContract(nil)
}
func (lib *EthLib) Watch(addr, storageAddr string) {
// lib.stateManager.Watch(ethutil.FromHex(addr), ethutil.FromHex(storageAddr))
}
func (lib *EthLib) CreateTx(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
return lib.Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr)
}
func (lib *EthLib) Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
var hash []byte
var contractCreation bool
if len(recipient) == 0 {
contractCreation = true
} else {
var err error
hash, err = hex.DecodeString(recipient)
if err != nil {
return "", err
}
}
keyPair := ethutil.Config.Db.GetKeys()[0]
value := ethutil.Big(valueStr)
gas := ethutil.Big(gasStr)
gasPrice := ethutil.Big(gasPriceStr)
var tx *ethchain.Transaction
// Compile and assemble the given data
if contractCreation {
// Compile script
mainScript, initScript, err := utils.CompileScript(dataStr)
if err != nil {
return "", err
}
tx = ethchain.NewContractCreationTx(value, gas, gasPrice, mainScript, initScript)
} else {
lines := strings.Split(dataStr, "\n")
var data []byte
for _, line := range lines {
data = append(data, ethutil.BigToBytes(ethutil.Big(line), 256)...)
}
tx = ethchain.NewTransactionMessage(hash, value, gas, gasPrice, data)
}
acc := lib.stateManager.GetAddrState(keyPair.Address())
tx.Nonce = acc.Nonce
tx.Sign(keyPair.PrivateKey)
lib.txPool.QueueTransaction(tx)
if contractCreation {
ethutil.Config.Log.Infof("Contract addr %x", tx.Hash()[12:])
} else {
ethutil.Config.Log.Infof("Tx hash %x", tx.Hash())
}
return ethutil.Hex(tx.Hash()), nil
}
func (lib *EthLib) GetBlock(hexHash string) *QBlock {
hash, err := hex.DecodeString(hexHash)
if err != nil {
return nil
}
block := lib.blockChain.GetBlock(hash)
return &QBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
}
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