package mailparse

import (
	"errors"
	"fmt"
	"io"
	"os"

	"github.com/jhillyerd/enmime"
)

func getBody(envelope *enmime.Envelope) (string, error) {
	if envelope.Text != "" {
		return envelope.Text, nil
	}
	if envelope.HTML != "" {
		// TODO: jaytaylor.com/html2text
		return envelope.HTML, nil
	}
	return "", errors.New("Can't find any text part inside the email")
}

func GetText(r io.Reader) (string, error) {
	envelope, err := enmime.ReadEnvelope(r)
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
	return getBody(envelope)
}