/*
	This file is part of go-ethereum

	go-ethereum is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	go-ethereum is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * @authors
 * 	Jeffrey Wilcke <i@jev.io>
 */
package main

import (
	"fmt"
	"os"
	"runtime"
	"time"

	"github.com/ethereum/go-ethereum/cmd/utils"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/eth"
	"github.com/ethereum/go-ethereum/ethutil"
	"github.com/ethereum/go-ethereum/logger"
	"github.com/ethereum/go-ethereum/state"
)

const (
	ClientIdentifier = "Ethereum(G)"
	Version          = "0.8.6"
)

var clilogger = logger.NewLogger("CLI")

func main() {
	runtime.GOMAXPROCS(runtime.NumCPU())

	defer func() {
		logger.Flush()
	}()

	utils.HandleInterrupt()

	// precedence: code-internal flag default < config file < environment variables < command line
	Init() // parsing command line

	if PrintVersion {
		printVersion()
		return
	}

	utils.InitConfig(VmType, ConfigFile, Datadir, "ETH")

	ethereum, err := eth.New(&eth.Config{
		Name:         ethutil.MakeVersion(ClientIdentifier, Version),
		KeyStore:     KeyStore,
		DataDir:      Datadir,
		LogFile:      LogFile,
		LogLevel:     LogLevel,
		LogFormat:    LogFormat,
		MaxPeers:     MaxPeer,
		Port:         OutboundPort,
		NAT:          NAT,
		KeyRing:      KeyRing,
		Shh:          true,
		Dial:         Dial,
		BootNodes:    BootNodes,
		NodeKey:      NodeKey,
		MinerThreads: MinerThreads,
	})

	if err != nil {
		clilogger.Fatalln(err)
	}

	utils.KeyTasks(ethereum.KeyManager(), KeyRing, GenAddr, SecretFile, ExportDir, NonInteractive)

	if Dump {
		var block *types.Block

		if len(DumpHash) == 0 && DumpNumber == -1 {
			block = ethereum.ChainManager().CurrentBlock()
		} else if len(DumpHash) > 0 {
			block = ethereum.ChainManager().GetBlock(ethutil.Hex2Bytes(DumpHash))
		} else {
			block = ethereum.ChainManager().GetBlockByNumber(uint64(DumpNumber))
		}

		if block == nil {
			fmt.Fprintln(os.Stderr, "block not found")

			// We want to output valid JSON
			fmt.Println("{}")

			os.Exit(1)
		}

		// Leave the Println. This needs clean output for piping
		statedb := state.New(block.Root(), ethereum.Db())
		fmt.Printf("%s\n", statedb.Dump())

		fmt.Println(block)

		return
	}

	if len(ImportChain) > 0 {
		start := time.Now()
		err := utils.ImportChain(ethereum, ImportChain)
		if err != nil {
			clilogger.Infoln(err)
		}
		clilogger.Infoln("import done in", time.Since(start))
		return
	}

	if StartRpc {
		utils.StartRpc(ethereum, RpcListenAddress, RpcPort)
	}

	if StartWebSockets {
		utils.StartWebSockets(ethereum, WsPort)
	}

	utils.StartEthereum(ethereum)

	fmt.Printf("Welcome to the FRONTIER\n")

	if StartMining {
		ethereum.Miner().Start()
	}

	if StartJsConsole {
		InitJsConsole(ethereum)
	} else if len(InputFile) > 0 {
		ExecJsFile(ethereum, InputFile)
	}
	// this blocks the thread
	ethereum.WaitForShutdown()
}

func printVersion() {
	fmt.Printf(`%v %v
PV=%d
GOOS=%s
GO=%s
GOPATH=%s
GOROOT=%s
`, ClientIdentifier, Version, eth.ProtocolVersion, runtime.GOOS, runtime.Version(), os.Getenv("GOPATH"), runtime.GOROOT())
}