package gandi

import (
	"fmt"
	"ncddns/mod"

	"github.com/go-gandi/go-gandi"
	"github.com/go-gandi/go-gandi/config"
	"github.com/go-gandi/go-gandi/livedns"
)

var (
	gandiEmailRecords = []livedns.DomainRecord{
		{
			RrsetType:   "MX",
			RrsetTTL:    10800,
			RrsetName:   "@",
			RrsetValues: []string{"10 spool.mail.gandi.net.", "50 fb.mail.gandi.net."},
		},
		{
			RrsetType:   "TXT",
			RrsetTTL:    10800,
			RrsetName:   "@",
			RrsetValues: []string{`"v=spf1 include:_mailcust.gandi.net ?all"`},
		},
	}
)

type Client struct{}

func (g Client) IPSet(reqs []mod.IPSetRequest) error {
	if len(reqs) == 0 {
		return nil
	}
	if err := g.EnsureAllDomainsAreSame(reqs); err != nil {
		return err
	}
	pwd := reqs[0].Password
	domain := reqs[0].Domain
	records := make([]livedns.DomainRecord, len(reqs))
	for index, req := range reqs {
		records[index] = livedns.DomainRecord{
			RrsetType:   "A",
			RrsetTTL:    300,
			RrsetName:   req.Host,
			RrsetValues: []string{req.IP},
		}
	}
	records = append(records, gandiEmailRecords...)

	_, err := gandi.NewLiveDNSClient(config.Config{
		APIKey: pwd,
	}).UpdateDomainRecords(domain, records)
	return err
}

func (Client) EnsureAllDomainsAreSame(reqs []mod.IPSetRequest) error {
	first := reqs[0].Domain
	for _, dom := range reqs {
		if first != dom.Domain {
			return fmt.Errorf("domain mismatch: %s != %s", first, dom.Domain)
		}
	}
	return nil
}