package conf

import (
	"bufio"
	"io"
)

type token int

const (
	Name        token = iota
	Delimiter   token = iota
	Nothing     token = iota
	IfStatement token = iota
)

// Having a Config to Manager function could be nice?
// Or we could just return a Manager from here.
type Config struct {
}

type scanner struct {
	r    io.Reader
	ss   bufio.Scanner
	prev token
	cur  token
}

func NewConfig(r io.Reader) *Config {
	br := bufio.NewReader(r)
	s := newScanner(br)
	s.next()

	return &Config{}
}

func newScanner(r io.Reader) *scanner {
	ns := bufio.NewScanner(r)
	ns.Split(bufio.ScanWords)

	sc := scanner{
		r:  r,
		ss: *ns,
	}

	return &sc
}

func getTokenType(s string) token {
	return Nothing
}

func (s *scanner) next() (token, string, error) {
	stop := s.ss.Scan()
	if stop {
		return Nothing, "", s.ss.Err()
	}
	tokstr := s.ss.Text()
	token := getTokenType(tokstr)

	return token, tokstr, nil
}

func (s *scanner) peek() (token, string, error) {
	return Nothing, "", nil
}