3 files changed, 317 insertions, 0 deletions
diff --git a/ui/gui.go b/ui/gui.go
new file mode 100644
index 000000000..556e682a9
--- /dev/null
+++ b/ui/gui.go
@@ -0,0 +1,217 @@
+package ethui
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethchain"
+	"github.com/ethereum/eth-go/ethdb"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/niemeyer/qml"
+	"math/big"
+	"strings"
+)
+
+// Block interface exposed to QML
+type Block struct {
+	Number int
+	Hash   string
+}
+
+type Tx struct {
+	Value, Hash, Address string
+}
+
+func NewTxFromTransaction(tx *ethchain.Transaction) *Tx {
+	hash := hex.EncodeToString(tx.Hash())
+	sender := hex.EncodeToString(tx.Recipient)
+
+	return &Tx{Hash: hash, Value: ethutil.CurrencyToString(tx.Value), Address: sender}
+}
+
+// Creates a new QML Block from a chain block
+func NewBlockFromBlock(block *ethchain.Block) *Block {
+	info := block.BlockInfo()
+	hash := hex.EncodeToString(block.Hash())
+
+	return &Block{Number: int(info.Number), Hash: hash}
+}
+
+type Gui struct {
+	// The main application window
+	win *qml.Window
+	// QML Engine
+	engine    *qml.Engine
+	component *qml.Common
+	// The ethereum interface
+	eth *eth.Ethereum
+
+	// The public Ethereum library
+	lib *EthLib
+
+	txDb *ethdb.LDBDatabase
+
+	addr []byte
+}
+
+// Create GUI, but doesn't start it
+func New(ethereum *eth.Ethereum) *Gui {
+	lib := &EthLib{blockManager: ethereum.BlockManager, blockChain: ethereum.BlockManager.BlockChain(), txPool: ethereum.TxPool}
+	db, err := ethdb.NewLDBDatabase("tx_database")
+	if err != nil {
+		panic(err)
+	}
+
+	key := ethutil.Config.Db.GetKeys()[0]
+	addr := key.Address()
+
+	ethereum.BlockManager.WatchAddr(addr)
+
+	return &Gui{eth: ethereum, lib: lib, txDb: db, addr: addr}
+}
+
+func (ui *Gui) Start() {
+	defer ui.txDb.Close()
+
+	// Register ethereum functions
+	qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
+		Init: func(p *Block, obj qml.Object) { p.Number = 0; p.Hash = "" },
+	}, {
+		Init: func(p *Tx, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
+	}})
+
+	ethutil.Config.Log.Infoln("[GUI] Starting GUI")
+	// Create a new QML engine
+	ui.engine = qml.NewEngine()
+	// Load the main QML interface
+	component, err := ui.engine.LoadFile("wallet.qml")
+	if err != nil {
+		panic(err)
+	}
+	ui.engine.LoadFile("transactions.qml")
+
+	ui.win = component.CreateWindow(nil)
+
+	context := ui.engine.Context()
+
+	// Expose the eth library and the ui library to QML
+	context.SetVar("eth", ui.lib)
+	context.SetVar("ui", &UiLib{engine: ui.engine, eth: ui.eth})
+
+	// Register the ui as a block processor
+	ui.eth.BlockManager.SecondaryBlockProcessor = ui
+	//ui.eth.TxPool.SecondaryProcessor = ui
+
+	// Add the ui as a log system so we can log directly to the UGI
+	ethutil.Config.Log.AddLogSystem(ui)
+
+	// Loads previous blocks
+	go ui.setInitialBlockChain()
+	go ui.readPreviousTransactions()
+	go ui.update()
+
+	ui.win.Show()
+	ui.win.Wait()
+
+	ui.eth.Stop()
+}
+
+func (ui *Gui) setInitialBlockChain() {
+	// Load previous 10 blocks
+	chain := ui.eth.BlockManager.BlockChain().GetChain(ui.eth.BlockManager.BlockChain().CurrentBlock.Hash(), 10)
+	for _, block := range chain {
+		ui.ProcessBlock(block)
+	}
+
+}
+
+func (ui *Gui) readPreviousTransactions() {
+	it := ui.txDb.Db().NewIterator(nil, nil)
+	for it.Next() {
+		tx := ethchain.NewTransactionFromBytes(it.Value())
+
+		ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
+	}
+	it.Release()
+}
+
+func (ui *Gui) ProcessBlock(block *ethchain.Block) {
+	ui.win.Root().Call("addBlock", NewBlockFromBlock(block))
+}
+
+// Simple go routine function that updates the list of peers in the GUI
+func (ui *Gui) update() {
+	txChan := make(chan ethchain.TxMsg, 1)
+	ui.eth.TxPool.Subscribe(txChan)
+
+	account := ui.eth.BlockManager.GetAddrState(ui.addr).Account
+	unconfirmedFunds := new(big.Int)
+	ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(account.Amount)))
+	for {
+		select {
+		case txMsg := <-txChan:
+			tx := txMsg.Tx
+
+			if txMsg.Type == ethchain.TxPre {
+				if bytes.Compare(tx.Sender(), ui.addr) == 0 {
+					ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
+					ui.txDb.Put(tx.Hash(), tx.RlpEncode())
+
+					ui.eth.BlockManager.GetAddrState(ui.addr).Nonce += 1
+					unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
+				} else if bytes.Compare(tx.Recipient, ui.addr) == 0 {
+					ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
+					ui.txDb.Put(tx.Hash(), tx.RlpEncode())
+
+					unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
+				}
+
+				pos := "+"
+				if unconfirmedFunds.Cmp(big.NewInt(0)) >= 0 {
+					pos = "-"
+				}
+				val := ethutil.CurrencyToString(new(big.Int).Abs(ethutil.BigCopy(unconfirmedFunds)))
+				str := fmt.Sprintf("%v (%s %v)", ethutil.CurrencyToString(account.Amount), pos, val)
+
+				ui.win.Root().Call("setWalletValue", str)
+			} else {
+				amount := account.Amount
+				if bytes.Compare(tx.Sender(), ui.addr) == 0 {
+					amount.Sub(account.Amount, tx.Value)
+				} else if bytes.Compare(tx.Recipient, ui.addr) == 0 {
+					amount.Add(account.Amount, tx.Value)
+				}
+
+				ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(amount)))
+			}
+		}
+
+		/*
+			accountAmount := ui.eth.BlockManager.GetAddrState(ui.addr).Account.Amount
+			ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", accountAmount))
+
+			ui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", ui.eth.Peers().Len(), ui.eth.MaxPeers))
+
+			time.Sleep(1 * time.Second)
+		*/
+
+	}
+}
+
+// Logging functions that log directly to the GUI interface
+func (ui *Gui) Println(v ...interface{}) {
+	str := strings.TrimRight(fmt.Sprintln(v...), "\n")
+	lines := strings.Split(str, "\n")
+	for _, line := range lines {
+		ui.win.Root().Call("addLog", line)
+	}
+}
+
+func (ui *Gui) Printf(format string, v ...interface{}) {
+	str := strings.TrimRight(fmt.Sprintf(format, v...), "\n")
+	lines := strings.Split(str, "\n")
+	for _, line := range lines {
+		ui.win.Root().Call("addLog", line)
+	}
+}
diff --git a/ui/library.go b/ui/library.go
new file mode 100644
index 000000000..3bbb01314
--- /dev/null
+++ b/ui/library.go
@@ -0,0 +1,60 @@
+package ethui
+
+import (
+	"encoding/hex"
+	"fmt"
+	"github.com/ethereum/eth-go/ethchain"
+	"github.com/ethereum/eth-go/ethutil"
+	"strings"
+)
+
+type EthLib struct {
+	blockManager *ethchain.BlockManager
+	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"))
+	keyRing := ethutil.NewValueFromBytes(k)
+
+	amount := ethutil.Big(a)
+	code := ethchain.Compile(strings.Split(data, "\n"))
+	tx := ethchain.NewTransaction(hash, amount, code)
+	tx.Nonce = lib.blockManager.GetAddrState(keyRing.Get(1).Bytes()).Nonce
+
+	tx.Sign(keyRing.Get(0).Bytes())
+
+	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())}
+}
diff --git a/ui/ui_lib.go b/ui/ui_lib.go
new file mode 100644
index 000000000..c956fd032
--- /dev/null
+++ b/ui/ui_lib.go
@@ -0,0 +1,40 @@
+package ethui
+
+import (
+	"github.com/ethereum/eth-go"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/niemeyer/qml"
+)
+
+// UI Library that has some basic functionality exposed
+type UiLib struct {
+	engine    *qml.Engine
+	eth       *eth.Ethereum
+	connected bool
+}
+
+// Opens a QML file (external application)
+func (ui *UiLib) Open(path string) {
+	component, err := ui.engine.LoadFile(path[7:])
+	if err != nil {
+		ethutil.Config.Log.Debugln(err)
+	}
+	win := component.CreateWindow(nil)
+
+	go func() {
+		win.Show()
+		win.Wait()
+	}()
+}
+
+func (ui *UiLib) Connect(button qml.Object) {
+	if !ui.connected {
+		ui.eth.Start()
+		ui.connected = true
+		button.Set("enabled", false)
+	}
+}
+
+func (ui *UiLib) ConnectToPeer(addr string) {
+	ui.eth.ConnectToPeer(addr)
+}