package util

import "strconv"

var msgHandler map[string](chan interface{})

func GetMsgHandler(msgPipe string) chan interface{} {
	hdr, has := msgHandler[msgPipe]
	if !has {
		hdr = make(chan interface{})
		msgHandler[msgPipe] = hdr
	}
	return hdr
}

func PostMessage(msgPipe string, msg interface{}) {
	hdr, has := msgHandler[msgPipe]
	if !has {
		hdr = make(chan interface{})
		msgHandler[msgPipe] = hdr
	}
	hdr <- msg
}

const (
	NUMBER_ALL = iota
	NUMBER_CONTINUE
)

func NumberFilter(in string, mode int) string {
	sbyte := make([]byte, 0)
	bnumbered := false
	for _, ss := range []byte(in) {
		if (ss >= '0' && ss <= '9') || ss == '.' || ss == '-' || ss == '+' {
			sbyte = append(sbyte, ss)
			bnumbered = true
		} else if mode != NUMBER_ALL {
			if bnumbered {
				break
			}
		}
	}
	return string(sbyte)
}

func init() {
	msgHandler = make(map[string]chan interface{})
}

func DebugLevel() int {
	return 1
}

func ToInt(source interface{}) int {
	res := -1
	switch val := source.(type) {
	case int:
		res = val
	case int16:
		res = int(val)
	case int32:
		res = int(val)
	case float32:
		res = int(val)
	case float64:
		res = int(val)
	case string:
		res = int(StringToInt64(val, 0))
	}
	return res
}

func StringToInt64(str string, dval int64) int64 {
	res, e := strconv.ParseInt(str, 10, 64)
	if e != nil {
		res = dval
	}
	return res
}