From 13c00afc68652d517f91313bb8c3eeb206d23f22 Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Tue, 17 Feb 2015 16:54:52 +0100
Subject: [PATCH] Implement register and watchTx

---
 .../assets/ext/ethereum.js/dist/ethereum.js   |  2 +
 rpc/message.go                                | 28 +++++++++
 rpc/packages.go                               | 60 ++++++++++++++++++-
 3 files changed, 88 insertions(+), 2 deletions(-)

diff --git a/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js b/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
index d0e9d3cb74..83b598b3f1 100644
--- a/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
+++ b/cmd/mist/assets/ext/ethereum.js/dist/ethereum.js
@@ -1417,6 +1417,8 @@ var ethMethods = function () {
 
     var methods = [
     { name: 'balanceAt', call: 'eth_balanceAt' },
+    { name: 'register', call: 'eth_register' },
+    { name: 'unregister', call: 'eth_unregister' },
     { name: 'stateAt', call: 'eth_stateAt' },
     { name: 'storageAt', call: 'eth_storageAt' },
     { name: 'countAt', call: 'eth_countAt'},
diff --git a/rpc/message.go b/rpc/message.go
index 7983e003d2..b5b852f544 100644
--- a/rpc/message.go
+++ b/rpc/message.go
@@ -342,3 +342,31 @@ func (req *RpcRequest) ToWhisperHasIdentityArgs() (string, error) {
 	rpclogger.DebugDetailf("%T %v", args, args)
 	return args, nil
 }
+
+func (req *RpcRequest) ToRegisterArgs() (string, error) {
+	if len(req.Params) < 1 {
+		return "", NewErrorResponse(ErrorArguments)
+	}
+
+	var args string
+	err := json.Unmarshal(req.Params[0], &args)
+	if err != nil {
+		return "", err
+	}
+	rpclogger.DebugDetailf("%T %v", args, args)
+	return args, nil
+}
+
+func (req *RpcRequest) ToWatchTxArgs() (string, error) {
+	if len(req.Params) < 1 {
+		return "", NewErrorResponse(ErrorArguments)
+	}
+
+	var args string
+	err := json.Unmarshal(req.Params[0], &args)
+	if err != nil {
+		return "", err
+	}
+	rpclogger.DebugDetailf("%T %v", args, args)
+	return args, nil
+}
diff --git a/rpc/packages.go b/rpc/packages.go
index ef31ff1e11..0b73d48a77 100644
--- a/rpc/packages.go
+++ b/rpc/packages.go
@@ -55,6 +55,9 @@ type EthereumApi struct {
 
 	messagesMut sync.RWMutex
 	messages    map[int][]xeth.WhisperMessage
+	// Register keeps a list of accounts and transaction data
+	regmut   sync.Mutex
+	register map[string][]*NewTxArgs
 
 	db ethutil.Database
 }
@@ -73,6 +76,36 @@ func NewEthereumApi(eth *xeth.XEth) *EthereumApi {
 	return api
 }
 
+func (self *EthereumApi) Register(args string, reply *interface{}) error {
+	self.regmut.Lock()
+	defer self.regmut.Unlock()
+
+	if _, ok := self.register[args]; ok {
+		self.register[args] = nil // register with empty
+	}
+	return nil
+}
+
+func (self *EthereumApi) Unregister(args string, reply *interface{}) error {
+	self.regmut.Lock()
+	defer self.regmut.Unlock()
+
+	delete(self.register, args)
+
+	return nil
+}
+
+func (self *EthereumApi) WatchTx(args string, reply *interface{}) error {
+	self.regmut.Lock()
+	defer self.regmut.Unlock()
+
+	txs := self.register[args]
+	self.register[args] = nil
+
+	*reply = txs
+	return nil
+}
+
 func (self *EthereumApi) NewFilter(args *FilterOptions, reply *interface{}) error {
 	var id int
 	filter := core.NewFilter(self.xeth.Backend())
@@ -149,8 +182,13 @@ func (p *EthereumApi) Transact(args *NewTxArgs, reply *interface{}) error {
 		args.GasPrice = defaultGasPrice
 	}
 
-	result, _ := p.xeth.Transact( /* TODO specify account */ args.To, args.Value, args.Gas, args.GasPrice, args.Data)
-	*reply = result
+	// TODO if no_private_key then
+	if _, exists := p.register[args.From]; exists {
+		p.register[args.From] = append(p.register[args.From], args)
+	} else {
+		result, _ := p.xeth.Transact( /* TODO specify account */ args.To, args.Value, args.Gas, args.GasPrice, args.Data)
+		*reply = result
+	}
 	return nil
 }
 
@@ -424,6 +462,24 @@ func (p *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) error
 	case "eth_gasPrice":
 		*reply = defaultGasPrice
 		return nil
+	case "eth_register":
+		args, err := req.ToRegisterArgs()
+		if err != nil {
+			return err
+		}
+		return p.Register(args, reply)
+	case "eth_unregister":
+		args, err := req.ToRegisterArgs()
+		if err != nil {
+			return err
+		}
+		return p.Unregister(args, reply)
+	case "eth_watchTx":
+		args, err := req.ToWatchTxArgs()
+		if err != nil {
+			return err
+		}
+		return p.WatchTx(args, reply)
 	case "web3_sha3":
 		args, err := req.ToSha3Args()
 		if err != nil {