package rate

import (
	"errors"

	"github.com/juju/ratelimit"
)

type Limit struct {
	*ratelimit.Bucket
}

func New(opts ...Option) (*Limit, error) {
	opt := new(options)
	for _, o := range opts {
		o(opt)
	}

	res := new(Limit)
	if opt.fillInterval > 0 && opt.capacity > 0 && opt.quantum > 0 {
		res.Bucket = ratelimit.NewBucketWithQuantum(opt.fillInterval, opt.capacity, opt.quantum)

		return res, nil
	}

	if opt.fillInterval > 0 && opt.capacity > 0 {
		res.Bucket = ratelimit.NewBucket(opt.fillInterval, opt.capacity)

		return res, nil
	}

	if opt.rate > 0 && opt.capacity > 0 {
		res.Bucket = ratelimit.NewBucketWithRate(opt.rate, opt.capacity)

		return res, nil
	}

	return nil, errors.New("options error can not find func to init")
}