ethereal/ui/library.go


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package ethui

import (
    "encoding/hex"
    "fmt"
    "github.com/ethereum/eth-go/ethchain"
    "github.com/ethereum/eth-go/ethutil"
    "strings"
)

type EthLib struct {
    stateManager *ethchain.StateManager
    blockChain   *ethchain.BlockChain
    txPool       *ethchain.TxPool
}

func (lib *EthLib) CreateTx(receiver, a, data string) string {
    var hash []byte
    if len(receiver) == 0 {
        hash = ethchain.ContractAddr
    } else {
        var err error
        hash, err = hex.DecodeString(receiver)
        if err != nil {
            return err.Error()
        }
    }

    k, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
    keyPair := ethutil.NewKeyFromBytes(k)

    amount := ethutil.Big(a)
    code := ethchain.Compile(strings.Split(data, "\n"))
    tx := ethchain.NewTransaction(hash, amount, code)
    tx.Nonce = lib.stateManager.GetAddrState(keyPair.Address()).Nonce

    tx.Sign(keyPair.PrivateKey)

    lib.txPool.QueueTransaction(tx)

    if len(receiver) == 0 {
        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())
}

func (lib *EthLib) GetBlock(hexHash string) *Block {
    hash, err := hex.DecodeString(hexHash)
    if err != nil {
        return nil
    }

    block := lib.blockChain.GetBlock(hash)
    fmt.Println(block)

    return &Block{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
}