package writecache

import (
	"time"

	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/shard/mode"
)

type StorageType string

func (t StorageType) String() string {
	return string(t)
}

const (
	StorageTypeUndefined StorageType = "null"
	StorageTypeDB        StorageType = "db"
	StorageTypeFSTree    StorageType = "fstree"
)

type Metrics interface {
	SetShardID(string)
	Get(d time.Duration, success bool, st StorageType, ioTag string)
	Delete(d time.Duration, success bool, st StorageType, ioTag string)
	Put(d time.Duration, success bool, st StorageType, ioTag string)
	Flush(success bool, st StorageType)
	Evict(st StorageType)

	SetEstimateSize(uint64)
	SetMode(m mode.ComponentMode)
	SetActualCounters(uint64)
	SetPath(path string)
	Close()
}

func DefaultMetrics() Metrics { return metricsStub{} }

type metricsStub struct{}

func (metricsStub) SetShardID(string) {}

func (metricsStub) SetPath(string) {}

func (metricsStub) Get(time.Duration, bool, StorageType, string) {}

func (metricsStub) Delete(time.Duration, bool, StorageType, string) {}

func (metricsStub) Put(time.Duration, bool, StorageType, string) {}

func (metricsStub) SetEstimateSize(uint64) {}

func (metricsStub) SetMode(mode.ComponentMode) {}

func (metricsStub) SetActualCounters(uint64) {}

func (metricsStub) Flush(bool, StorageType) {}

func (metricsStub) Evict(StorageType) {}

func (metricsStub) Close() {}