// This file is part of the happyDomain (R) project.
// Copyright (c) 2020-2024 happyDomain
// Authors: Pierre-Olivier Mercier, et al.
//
// This program is offered under a commercial and under the AGPL license.
// For commercial licensing, contact us at <contact@happydomain.org>.
//
// For AGPL licensing:
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package svcs

import (
	"fmt"
	"strings"

	"github.com/StackExchange/dnscontrol/v4/models"
	"github.com/miekg/dns"

	"git.happydns.org/happyDomain/model"
	"git.happydns.org/happyDomain/utils"
)

type Orphan struct {
	Type string
	RR   string
}

func (s *Orphan) GetNbResources() int {
	return 1
}

func (s *Orphan) GenComment(origin string) string {
	return fmt.Sprintf("%s %s", s.Type, s.RR)
}

func (s *Orphan) GenRRs(domain string, ttl uint32, origin string) (rrs models.Records) {
	if _, ok := dns.StringToType[s.Type]; ok {
		rr, err := dns.NewRR(fmt.Sprintf("%s %d IN %s %s", utils.DomainJoin(domain), ttl, s.Type, s.RR))
		if err == nil {
			rc, err := models.RRtoRC(rr, strings.TrimSuffix(origin, "."))
			if err == nil {
				rrs = append(rrs, &rc)
				return
			}
		}
	}

	rr := utils.NewRecordConfig(domain, s.Type, ttl, origin)
	rr.SetTarget(s.RR)
	rrs = append(rrs, rr)

	return
}

func init() {
	RegisterService(
		func() happydns.Service {
			return &Orphan{}
		},
		nil,
		ServiceInfos{
			Name:        "Orphan Record",
			Description: "A record not yet handled by happyDomain. Ask us to support it.",
			Categories:  []string{},
		},
		99999999,
	)
}