package internal

import "fmt"

type PlaceholderStyle int

const (
	QuestionMark PlaceholderStyle = iota
	DollarNumber
	ColonNumber
)

type Placeholder struct {
	style PlaceholderStyle
	count int
}

func NewPlaceholder(style PlaceholderStyle) *Placeholder {
	return &Placeholder{style: style}
}

func (p *Placeholder) Next() string {
	p.count++
	switch p.style {
	case DollarNumber:
		return fmt.Sprintf("$%d", p.count)
	case ColonNumber:
		return fmt.Sprintf(":%d", p.count)
	default:
		return "?"
	}
}

func (p *Placeholder) Reset() {
	p.count = 0
}

func (p *Placeholder) Count() int {
	return p.count
}