package util

import (
	"gopkg.in/yaml.v3"
	"strconv"
	"strings"
)

type Range[T ~int | ~int8 | ~int16 | ~int32 | ~int64 |
	~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr] [2]T

func (r *Range[T]) Size() T {
	return r[1] - r[0]
}

func (r *Range[T]) Within(x T) bool {
	return x >= r[0] && x <= r[1]
}

func (r *Range[T]) Valid() bool {
	return r.Size() >= 0
}

func (r *Range[T]) UnmarshalYAML(value *yaml.Node) error {
	ss := strings.Split(value.Value, "-")
	i64, err := strconv.ParseInt(ss[0], 10, 0)
	if err != nil {
		return err
	}
	r[0] = T(i64)
	i64, err = strconv.ParseInt(ss[1], 10, 0)
	if err != nil {
		return err
	}
	r[1] = T(i64)
	return nil
}