package nechotron

import "strings"

type FilterFn func(u *Update) bool

func TextStartsWith(text string) FilterFn {
	return func(u *Update) bool {
		return strings.HasPrefix(u.Text(), text)
	}
}

func TextHas(text string) FilterFn {
	return func(u *Update) bool {
		return strings.Contains(u.Text(), text)
	}
}