package s3

import (
	"fmt"
	"strings"

	"gitea.maximumdirect.net/eric/distributor/internal/storage"
)

const BackendName = "s3"

const DefaultRegion = "us-east-1"

type Options struct {
	Endpoint        string
	Bucket          string
	Prefix          string
	Region          string
	ForcePathStyle  bool
	AccessKeyID     string
	SecretAccessKey string
}

func (o Options) normalized() (Options, error) {
	if o.Endpoint == "" {
		return Options{}, fmt.Errorf("endpoint is required")
	}
	if o.Bucket == "" {
		return Options{}, fmt.Errorf("bucket is required")
	}
	if o.Region == "" {
		o.Region = DefaultRegion
	}
	o.Prefix = strings.Trim(o.Prefix, "/")
	if err := storage.ValidatePrefix(o.Prefix); err != nil {
		return Options{}, fmt.Errorf("prefix: %w", err)
	}
	if (o.AccessKeyID == "") != (o.SecretAccessKey == "") {
		return Options{}, fmt.Errorf("access key id and secret access key must be configured together")
	}
	return o, nil
}