// Copyright (c) 2020 Proton Technologies AG
//
// This file is part of ProtonMail Bridge.
//
// ProtonMail Bridge is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ProtonMail Bridge is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.

package message

import (
	"net/mail"
	"strings"

	"github.com/emersion/go-imap"
)

func getAddresses(addrs []*mail.Address) (imapAddrs []*imap.Address) {
	for _, a := range addrs {
		if a == nil {
			continue
		}

		parts := strings.SplitN(a.Address, "@", 2)
		if len(parts) != 2 {
			continue
		}

		imapAddrs = append(imapAddrs, &imap.Address{
			PersonalName: a.Name,
			MailboxName:  parts[0],
			HostName:     parts[1],
		})
	}

	return
}

func formatAddressList(addrs []*mail.Address) (s string) {
	for i, addr := range addrs {
		if i > 0 {
			s += ", "
		}
		s += addr.String()
	}
	return
}