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package main

import (
    "flag"
    "fmt"
    "github.com/ethereum/ethutil-go"
    "log"
    "os"
    "os/signal"
    "path"
    "runtime"
)

const Debug = true

var StartConsole bool
var StartMining bool

func Init() {
    flag.BoolVar(&StartConsole, "c", false, "debug and testing console")
    flag.BoolVar(&StartMining, "m", false, "start dagger mining")

    flag.Parse()
}

// Register interrupt handlers so we can stop the server
func RegisterInterupts(s *Server) {
    // Buffered chan of one is enough
    c := make(chan os.Signal, 1)
    // Notify about interrupts for now
    signal.Notify(c, os.Interrupt)
    go func() {
        for sig := range c {
            fmt.Printf("Shutting down (%v) ... \n", sig)

            s.Stop()
        }
    }()
}

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

    ethutil.InitFees()

    Init()

    ethutil.ReadConfig()

    server, err := NewServer()

    if err != nil {
        log.Println(err)
        return
    }

    if StartConsole {
        err := os.Mkdir(ethutil.Config.ExecPath, os.ModePerm)
        // Error is OK if the error is ErrExist
        if err != nil && !os.IsExist(err) {
            log.Panic("Unable to create EXECPATH. Exiting")
        }

        // TODO The logger will eventually be a non blocking logger. Logging is a expensive task
        // Log to file only
        file, err := os.OpenFile(path.Join(ethutil.Config.ExecPath, "debug.log"), os.O_RDWR|os.O_CREATE, os.ModePerm)
        if err != nil {
            log.Panic("Unable to set proper logger", err)
        }

        ethutil.Config.Log = log.New(file, "", 0)

        console := NewConsole(server)
        go console.Start()
    }

    log.Println("Starting Ethereum")

    RegisterInterupts(server)

    if StartMining {
        log.Println("Mining started")
        dagger := &Dagger{}

        go func() {
            for {
                res := dagger.Search(ethutil.Big("01001"), ethutil.BigPow(2, 36))
                log.Println("Res dagger", res)
                //server.Broadcast("blockmine", ethutil.Encode(res.String()))
            }
        }()
    }

    server.Start()

    // Wait for shutdown
    server.WaitForShutdown()
}