package identify

import (
	"os/exec"
	"regexp"
)


type Indetification struct {
	word string
	Identifier func(*Indetification) (string, error)
}

func New(word string) Indetification {
	return Indetification{
		word: word,
		Identifier: executeTransShell,
	}
}

func executeTransShell(i *Indetification) (string, error) {
	config := []string{
		"-no-ansi",
		"-id",
		i.word,
	}
	outBytes, err := exec.Command("trans", config...).Output()
	return string(outBytes), err
}

func (i Indetification) Identify() string {
	output, err := i.Identifier(&i)
	if err != nil {
		panic(err)
	}
	return parseTransIdentifyOutput(output)
}

func parseTransIdentifyOutput(out string) string {
	re := regexp.MustCompile(`(?m)^Code\s+(\w+)$`)
	result := ""
	matches := re.FindStringSubmatch(out)
	if (len(matches) >= 2) {
		result = matches[1]
	}
	return result
}