package shortcode

import "fmt"

// Fieldset represents a parsed [fieldset] block shortcode.
type Fieldset struct {
	Legend    string // fieldset legend text
	Columns   int    // number of columns (0 = single column)
	VisibleOn int    // field index that controls visibility (0 = always visible)
}

// FieldsetHandler handles the [fieldset] / [/fieldset] block shortcode.
type FieldsetHandler struct{}

func init() {
	Register(FieldsetHandler{})
}

func (FieldsetHandler) Tag() string {
	return "fieldset"
}

func (FieldsetHandler) Parse(attrs map[string]string) (interface{}, string) {
	columns := 0
	if v, ok := attrs["columns"]; ok {
		fmt.Sscanf(v, "%d", &columns)
	}
	visibleOn := 0
	if v, ok := attrs["visible_on"]; ok {
		fmt.Sscanf(v, "%d", &visibleOn)
	}

	return &Fieldset{
		Legend:    attrs["legend"],
		Columns:   columns,
		VisibleOn: visibleOn,
	}, ""
}