package blobtreeconfig

import (
	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/blobstor/blobtree"
)

// Config is a wrapper over the config section
// which provides access to Blobtree configurations.
type Config config.Config

const (
	// SizeDefault is a default limit of estimates of single Blobtree file size.
	SizeDefault = 4 * 1024 * 1024

	// DepthDefault is a default shallow dir depth.
	DepthDefault = 8
)

// From wraps config section into Config.
func From(c *config.Config) *Config {
	return (*Config)(c)
}

// Type returns the storage type.
func (x *Config) Type() string {
	return blobtree.Type
}

// Size returns the value of "size" config parameter.
//
// Returns SizeDefault if the value is not a positive number.
func (x *Config) Size() uint64 {
	s := config.SizeInBytesSafe(
		(*config.Config)(x),
		"size",
	)

	if s > 0 {
		return s
	}

	return SizeDefault
}

// ShallowDepth returns the value of "depth" config parameter.
//
// Returns ShallowDepthDefault if the value is not a positive number.
func (x *Config) Depth() uint64 {
	d := config.UintSafe(
		(*config.Config)(x),
		"depth",
	)

	if d > 0 {
		return d
	}

	return DepthDefault
}