package main

import (
	"cli-mon/can"
	"cli-mon/ui"
	"cli-mon/yabl"
	"flag"
	"fmt"
	"os"
	"reflect"
)

func main() {
	filename := flag.String("f", "", "Candump filename")
	canbus := flag.String("i", "", "CAN bus interface")
	stdin := flag.Bool("s", false, "Read from stdin")
	gui := flag.Bool("gui", false, "Text mode gui")
	flag.Parse()

	var frames <-chan *can.CanFrame

	switch {
	case *stdin:
		frames = can.ReadStdin()
	case len(*filename) > 0:
		frames = can.Readfile(filename)
	case len(*canbus) > 0:
		var err error
		frames, err = can.StartCan(*canbus)
		if err != nil {
			fmt.Println(err)
			return
		}
	default:
		flag.Usage()
	}

	if frames == nil {
		fmt.Println("Get no data")
		os.Exit(0)
	}

	var messages = yabl.StartProtocolParsing(frames)

	if *gui {
		ui.InitCliApp(messages)
	} else {
		for msg := range messages {
			// val := getField(msg.Object, msg.Field)
			fmt.Printf("%v %v.%v [%d] %v\n", msg.Updated.Format("Jan _2 15:04:05.000"), msg.ActionName, msg.Field, msg.UnitId, msg.Value)
		}
	}
}

func getField(v yabl.Action, field yabl.FName) interface{} {
	r := reflect.ValueOf(v)
	f := reflect.Indirect(r).FieldByName(string(field))
	return f.Interface()
}