package config

import (
	"errors"
	"io/ioutil"
	"os"
	"path"

	"git.trj.tw/golang/utils"
	"gopkg.in/yaml.v2"
)

// RecordData -
type RecordData struct {
	Name string `yaml:"name" json:"name"`
	Type string `yaml:"type" json:"type"`
}

// DomainData -
type DomainData struct {
	Name    string       `yaml:"name" json:"name"`
	Records []RecordData `yaml:"records" json:"records"`
}

// Config -
type Config struct {
	URL struct {
		V4 string `yaml:"v4"`
		V6 string `yaml:"v6"`
	} `yaml:"url"`
	VerifyValue string       `yaml:"verify_value"`
	Domains     []DomainData `yaml:"domains"`
}

var conf *Config

// LoadConfig -
func LoadConfig(p ...string) error {
	var fp string
	// set config path
	if len(p) > 0 && len(p[0]) > 0 {
		fp = p[0]
	} else {
		wd, err := os.Getwd()
		if err != nil {
			return err
		}

		fp = path.Join(wd, "config.yml")
	}

	fp = utils.ParsePath(fp)
	if exists := utils.CheckExists(fp, false); !exists {
		return errors.New("config file not exists")
	}

	data, err := ioutil.ReadFile(fp)
	if err != nil {
		return err
	}
	conf = &Config{}
	err = yaml.Unmarshal(data, conf)
	if err != nil {
		return err
	}

	return nil
}

// GetConfig -
func GetConfig() *Config { return conf }

// GetV4Data -
func (p DomainData) GetV4Data() DomainData {
	domain := DomainData{}
	domain.Name = p.Name
	if len(p.Records) == 0 {
		return domain
	}
	for _, it := range p.Records {
		if it.Type == "A" {
			domain.Records = append(domain.Records, it)
		}
	}
	return domain
}

// GetV6Data -
func (p DomainData) GetV6Data() DomainData {
	domain := DomainData{}
	domain.Name = p.Name
	if len(p.Records) == 0 {
		return domain
	}
	for _, it := range p.Records {
		if it.Type == "AAAA" {
			domain.Records = append(domain.Records, it)
		}
	}
	return domain
}