Fs02/grimoire

package changeset

// Options applicable to changeset.
type Options struct {
    message     string
    code        int
    name        string
    exact       bool
    changeOnly  bool
    required    bool
    sourceField string
    emptyValues []interface{}
}

// Option for changeset operation.
type Option func(*Options)

func (options *Options) apply(opts []Option) {
    for _, opt := range opts {
        opt(options)
    }
}

// Message for changeset operation's error.
func Message(message string) Option {
    return func(opts *Options) {
        opts.message = message
    }
}

// Code for changeset operation's error.
func Code(code int) Option {
    return func(opts *Options) {
        opts.code = code
    }
}

// Name is used to define index name of constraints.
func Name(name string) Option {
    return func(opts *Options) {
        opts.name = name
    }
}

// Exact is used to define how index name is matched.
func Exact(exact bool) Option {
    return func(opts *Options) {
        opts.exact = exact
    }
}

// ChangeOnly is used to define if validate is only check change
func ChangeOnly(changeOnly bool) Option {
    return func(opts *Options) {
        opts.changeOnly = changeOnly
    }
}

// Required is used to define whether an assoc needs to be required or not.
func Required(required bool) Option {
    return func(opts *Options) {
        opts.required = required
    }
}

// SourceField to define used field name in params.
func SourceField(field string) Option {
    return func(opts *Options) {
        opts.sourceField = field
    }
}

// EmptyValues defines list of empty values when casting.
// default to [""]
func EmptyValues(values ...interface{}) Option {
    return func(opts *Options) {
        opts.emptyValues = values
    }
}