opcotech/elemo

package model

import (
    "errors"
    "time"

    "github.com/opcotech/elemo/internal/pkg/validate"
)

// Label is an entity that can be attached to a resource to provide additional
// information about it. For example, a Type can be used to indicate the
// environment a resource belongs to.
type Label struct {
    ID          ID         `json:"id" validate:"required"`
    Name        string     `json:"name" validate:"required,min=3,max=120"`
    Description string     `json:"description" validate:"omitempty,min=5,max=500"`
    CreatedAt   *time.Time `json:"created_at" validate:"omitempty"`
    UpdatedAt   *time.Time `json:"updated_at" validate:"omitempty"`
}

func (l *Label) Validate() error {
    if err := validate.Struct(l); err != nil {
        return errors.Join(ErrInvalidLabelDetails, err)
    }
    if err := l.ID.Validate(); err != nil {
        return errors.Join(ErrInvalidLabelDetails, err)
    }
    return nil
}

// NewLabel creates a new Label.
func NewLabel(name string) (*Label, error) {
    label := &Label{
        ID:   MustNewNilID(ResourceTypeLabel),
        Name: name,
    }

    if err := label.Validate(); err != nil {
        return nil, err
    }

    return label, nil
}