user.go

package id

import (
	jsoniter "github.com/json-iterator/go"
)

const (
	User        = "user"
	UsersPrefix = "users"
)

type UserID struct {
	UserID string `json:"user_id"`
}

func (t *UserID) Type() string { return User }

func (t *UserID) String() string {
	return Join(UsersPrefix, t.UserID)
}

func (t *UserID) ToMap() map[string]any {
	return map[string]any{
		"user_id": t.UserID,
	}
}

func (t *UserID) FromMap(m map[string]any) error {
	t.UserID = m["user_id"].(string)
	return nil
}

func (t *UserID) Validate() error {
	if t.UserID == "" {
		return ErrInvalidID
	}
	return nil
}

func parseUserID(parts []string) (*UserID, error) {
	var id UserID
	if len(parts) != 2 || parts[0] != UsersPrefix {
		return nil, ErrInvalidID
	}

	id.UserID = parts[1]
	return &id, nil
}

func (t *UserID) UnmarshalJSON(b []byte) error {
	var data string
	if err := jsoniter.Unmarshal(b, &data); err != nil {
		return err
	}
	knownID, err := Parse(data)
	if err != nil {
		return err
	}
	t.UserID = knownID.(*UserID).UserID
	return nil
}

func (t *UserID) MarshalJSON() ([]byte, error) {
	return []byte(t.String()), nil
}