package DNSProvider

import (
	"reflect"

	"github.com/go-acme/lego/v4/challenge"
)

type DNSProvider struct {
	TencentCloud TencentCloud `json:"TencentCloud,omitempty"`
	AliCloud     AliCloud     `json:"AliCloud,omitempty"`
	HuaweiCloud  HuaweiCloud  `json:"HuaweiCloud,omitempty"`
	WestCN       WestCN       `json:"WestCN,omitempty"`
	RainYun      RainYun      `json:"RainYun,omitempty"`
	Dode         Dode         `json:"Dode,omitempty"`
}

func (dnsProvider *DNSProvider) Choose() ([]challenge.Provider, []error) {

	var Providers []challenge.Provider
	var Errors []error
	v := reflect.ValueOf(dnsProvider).Elem()

	for i := 0; i < v.NumField(); i++ {
		field := v.Field(i)
		if field.Kind() == reflect.Struct {
			for ii := 0; ii < field.NumField(); ii++ {
				if field.Field(ii).String() != "" {
					method, _ := field.Type().MethodByName("Provider")
					results := method.Func.Call([]reflect.Value{field})
					err, _ := results[1].Interface().(error)
					if err != nil {
						Errors = append(Errors, err)
					} else {
						Providers = append(Providers, results[0].Interface().(challenge.Provider))
					}
					break
				}
			}
		}
	}
	return Providers, Errors
}