package dns_providers

import (
	"context"
	"fmt"
	"log"
	"time"

	"github.com/levelzerotechnology/directadmin-go"
	"hub.cybercinch.nz/cybercinch/ddns-update/internal"
)

const (
	DirectadminTag = "directadmin"
)

type Directadmin struct {
	Client  *directadmin.UserContext
	Context context.Context
	Config  internal.Config
}

type ListDNSRecordsParams struct {
	Name string
}

func (d *Directadmin) FetchRecord(hostname string) (string, error) {
	dnsRecord, err := d.GetDnsRecord(hostname)
	if err != nil {
		log.Fatal("unable to retrieve DNS record")
		return "", err
	}

	return dnsRecord[0].Value, nil
}

func (d *Directadmin) UpdateRecord(hostname string, ip string) error {

	result := GetDomainParts(hostname)
	current_record, _ := d.GetDnsRecord(hostname)

	// Create an updated record for the new ip
	new_record := directadmin.DNSRecord{Name: current_record[0].Name, Ttl: current_record[0].Ttl, Type: current_record[0].Type, Value: ip}

	err := d.Client.UpdateDNSRecord(result.Domain, current_record[0], new_record)
	if err != nil {
		return err
	}
	return nil
}

func (d *Directadmin) GetDnsRecord(hostname string) ([]directadmin.DNSRecord, error) {

	domainParts := GetDomainParts(hostname)
	dnsRecords, err := d.Client.GetDNSRecords(domainParts.Domain)
	var slice []directadmin.DNSRecord

	for _, dnsRecord := range dnsRecords {
		if domainParts.Name == dnsRecord.Name {
			slice = append(slice, dnsRecord)
		}
	}

	if len(slice) == 0 {
		return nil, fmt.Errorf("unable to find DNS record for %s", hostname)
	}

	return slice, err
}

func (d *Directadmin) NewClient(server_url string, username string, key string) {
	api, err := directadmin.New(server_url, 5*time.Second, false, false)
	if err != nil {
		panic(err)
	}

	userCtx, err := api.LoginAsUser(username, key)
	if err != nil {
		panic(err)
	}

	d.Client = userCtx
}

func NewDirectAdminProvider(ctx context.Context, config internal.Config) *Directadmin {
	c := &Directadmin{}
	c.Context = ctx
	c.Config = config
	c.NewClient(config.DirectadminUrl, config.DirectadminUsername, config.DirectadminKey)
	return c
}