// Code generated by go-enum DO NOT EDIT.
// Version: -
// Revision: -
// Build Date: -
// Built By: -

package events

import (
	"database/sql/driver"
	"errors"
	"fmt"
	"strings"
)

const (
	// TopicProcessed is a Topic of type Processed.
	TopicProcessed Topic = "event:processed"
	// TopicUserRegister is a Topic of type UserRegister.
	TopicUserRegister Topic = "user:register"
)

var ErrInvalidTopic = fmt.Errorf("not a valid Topic, try [%s]", strings.Join(_TopicNames, ", "))

var _TopicNames = []string{
	string(TopicProcessed),
	string(TopicUserRegister),
}

// TopicNames returns a list of possible string values of Topic.
func TopicNames() []string {
	tmp := make([]string, len(_TopicNames))
	copy(tmp, _TopicNames)
	return tmp
}

// TopicValues returns a list of the values for Topic
func TopicValues() []Topic {
	return []Topic{
		TopicProcessed,
		TopicUserRegister,
	}
}

// String implements the Stringer interface.
func (x Topic) String() string {
	return string(x)
}

// IsValid provides a quick way to determine if the typed value is
// part of the allowed enumerated values
func (x Topic) IsValid() bool {
	_, err := ParseTopic(string(x))
	return err == nil
}

var _TopicValue = map[string]Topic{
	"event:processed": TopicProcessed,
	"user:register":   TopicUserRegister,
}

// ParseTopic attempts to convert a string to a Topic.
func ParseTopic(name string) (Topic, error) {
	if x, ok := _TopicValue[name]; ok {
		return x, nil
	}
	return Topic(""), fmt.Errorf("%s is %w", name, ErrInvalidTopic)
}

var errTopicNilPtr = errors.New("value pointer is nil") // one per type for package clashes

// Scan implements the Scanner interface.
func (x *Topic) Scan(value interface{}) (err error) {
	if value == nil {
		*x = Topic("")
		return
	}

	// A wider range of scannable types.
	// driver.Value values at the top of the list for expediency
	switch v := value.(type) {
	case string:
		*x, err = ParseTopic(v)
	case []byte:
		*x, err = ParseTopic(string(v))
	case Topic:
		*x = v
	case *Topic:
		if v == nil {
			return errTopicNilPtr
		}
		*x = *v
	case *string:
		if v == nil {
			return errTopicNilPtr
		}
		*x, err = ParseTopic(*v)
	default:
		return errors.New("invalid type for Topic")
	}

	return
}

// Value implements the driver Valuer interface.
func (x Topic) Value() (driver.Value, error) {
	return x.String(), nil
}

// Set implements the Golang flag.Value interface func.
func (x *Topic) Set(val string) error {
	v, err := ParseTopic(val)
	*x = v
	return err
}

// Get implements the Golang flag.Getter interface func.
func (x *Topic) Get() interface{} {
	return *x
}

// Type implements the github.com/spf13/pFlag Value interface.
func (x *Topic) Type() string {
	return "Topic"
}

type NullTopic struct {
	Topic Topic
	Valid bool
}

func NewNullTopic(val interface{}) (x NullTopic) {
	err := x.Scan(val) // yes, we ignore this error, it will just be an invalid value.
	_ = err            // make any errcheck linters happy
	return
}

// Scan implements the Scanner interface.
func (x *NullTopic) Scan(value interface{}) (err error) {
	if value == nil {
		x.Topic, x.Valid = Topic(""), false
		return
	}

	err = x.Topic.Scan(value)
	x.Valid = (err == nil)
	return
}

// Value implements the driver Valuer interface.
func (x NullTopic) Value() (driver.Value, error) {
	if !x.Valid {
		return nil, nil
	}
	// driver.Value accepts int64 for int values.
	return string(x.Topic), nil
}

type NullTopicStr struct {
	NullTopic
}

func NewNullTopicStr(val interface{}) (x NullTopicStr) {
	x.Scan(val) // yes, we ignore this error, it will just be an invalid value.
	return
}

// Value implements the driver Valuer interface.
func (x NullTopicStr) Value() (driver.Value, error) {
	if !x.Valid {
		return nil, nil
	}
	return x.Topic.String(), nil
}