package factory

import (
	"reflect"

	_ "gitlink.org.cn/cloudream/jcs-pub/common/pkgs/storage"
	"gitlink.org.cn/cloudream/jcs-pub/common/pkgs/storage/factory/reg"
	stgtypes "gitlink.org.cn/cloudream/jcs-pub/common/pkgs/storage/types"
	jcstypes "gitlink.org.cn/cloudream/jcs-pub/common/types"
)

// 此函数永远不会返回nil。如果找不到对应的Builder，则会返回EmptyBuilder，
// 此Builder的所有函数都会返回否定值或者封装后的ErrUnsupported错误（需要使用errors.Is检查）
func GetBuilder(detail *jcstypes.UserSpaceDetail) stgtypes.StorageBuilder {
	typ := reflect.TypeOf(detail.UserSpace.Storage)

	ctor, ok := reg.StorageBuilders[typ]
	if !ok {
		return &stgtypes.EmptyBuilder{}
	}

	return ctor(detail)
}