// (c) Bernhard Tittelbach, 2013

package main

import (
    "fmt"
    "os"
    "flag"
    //~ "log"
)

//~ func StringArrayToByteArray(ss []string) [][]byte {
    //~ bb := make([][]byte, len(ss))
    //~ for index, s := range(ss) {
        //~ bb[index] = []byte(s)
    //~ }
    //~ return bb
//~ }

// ---------- Main Code -------------

var (
    cmd_port_ string
    pub_port_ string
)

func usage() {
    fmt.Fprintf(os.Stderr, "Usage: door_daemon_0mq <door tty device>\n")
    flag.PrintDefaults()
}

func init() {
    flag.StringVar(&cmd_port_, "cmdport", "tcp://127.0.01:3232", "zmq command socket path")
    flag.StringVar(&pub_port_, "pubport", "pgm://233.252.1.42:4242", "zmq public/listen socket path")
    flag.Usage = usage
    flag.Parse()
}

func main() {
    args := flag.Args()
    if len(args) < 1 {
        fmt.Fprintf(os.Stderr, "Input file is missing!\n");
        usage()
        os.Exit(1);
    }

    zmqctx, cmd_chans, pub_chans := ZmqsInit(cmd_port_, pub_port_)
    defer cmd_chans.Close()
    defer pub_chans.Close()
    defer zmqctx.Close()

    serial_wr, err := OpenAndHandleSerial(args[0], pub_chans.Out())
    defer close(serial_wr)
    if err != nil {
        panic(err)
    }

    //~ serial_wr <- "f"
    //~ firmware_version := <- serial_rd
    //~ log.Print("Firmware version:", firmware_version)

    for incoming_request := range cmd_chans.In() {
        //~ log.Print(incoming_request)
        reply, err := HandleCommand(incoming_request, pub_chans.Out(), serial_wr)
         if err != nil {
            //~ log.Print(err)
            out_msg := [][]byte{[]byte("ERROR"), []byte(err.Error())}
            cmd_chans.Out() <- out_msg
            //~ log.Print("sent error")
         } else {
            //~ log.Print(reply)
            cmd_chans.Out() <- reply
            //~ log.Print("sent reply")
         }
    }
}