package inbucket

import (
  "crypto/sha1"
  "fmt"
  "io"
  "strings"
)

// Take "user+ext@host.com" and return "user", aka the mailbox we'll store it in
func ParseMailboxName(emailAddress string) (result string) {
  result = strings.ToLower(emailAddress)
  if idx := strings.Index(result, "@"); idx > -1 {
    result = result[0:idx]
  } 
  if idx := strings.Index(result, "+"); idx > -1 {
    result = result[0:idx]
  } 
  return result
}

// Take a mailbox name and hash it into the directory we'll store it in
func HashMailboxName(mailbox string) string {
  h := sha1.New()
  io.WriteString(h, mailbox)
  return fmt.Sprintf("%x", h.Sum(nil))
}