package two

import (
	"bufio"
	"io"
	"strings"
)

func parseLines(r io.Reader) ([]string, []string, error) {
	var stripes, designs []string

	var inDesigns bool
	scanner := bufio.NewScanner(r)
	for scanner.Scan() {
		line := scanner.Text()
		if line == "" {
			inDesigns = true
			continue
		}

		if inDesigns {
			designs = append(designs, line)
		} else {
			stripes = strings.Split(line, ", ")
		}
	}

	if err := scanner.Err(); err != nil {
		return nil, nil, err
	}

	return stripes, designs, nil
}