// license that can be found in the LICENSE file.

package tar

import (
	"math"
	"strings"
	"testing"
	"time"
)

func TestFitsInBase256(t *testing.T) {
	vectors := []struct {
		in    int64
		width int
		ok    bool
	}{
		{+1, 8, true},
		{0, 8, true},
		{-1, 8, true},
		{1 << 56, 8, false},
		{(1 << 56) - 1, 8, true},
		{-1 << 56, 8, true},
		{(-1 << 56) - 1, 8, false},

			m.Set(name, metric.Value, labels...)
		}
	}
}

// SetHistogramValues - sets values for the given MetricName using the provided map of
// range to value.
func SetHistogramValues[V uint64 | int64 | float64](m MetricValues, name MetricName, values map[string]V, labels ...string) {
	for rng, val := range values {
		m.Set(name, float64(val), append(labels, rangeL, rng)...)
	}
}

//go:build (linux || darwin) && !appengine
// +build linux darwin
// +build !appengine

package cmd

import "syscall"

func direntInode(dirent *syscall.Dirent) uint64 {
	return dirent.Ino

	}
	return err
}

func saveConfigWithOpts(ctx context.Context, store objectIO, configFile string, data []byte, opts ObjectOptions) error {
	hashReader, err := hash.NewReader(ctx, bytes.NewReader(data), int64(len(data)), "", getSHA256Hash(data), int64(len(data)))
	if err != nil {
		return err
	}

	_, err = store.PutObject(ctx, minioMetaBucket, configFile, NewPutObjReader(hashReader), opts)
	return err
}

// ShardFileSize - returns final erasure size from original size.
func (e ErasureInfo) ShardFileSize(totalLength int64) int64 {
	if totalLength == 0 {
		return 0
	}
	if totalLength == -1 {
		return -1
	}
	numShards := totalLength / e.BlockSize
	lastBlockSize := totalLength % e.BlockSize
	lastShardSize := ceilFrac(lastBlockSize, int64(e.DataBlocks))
	return numShards*e.ShardSize() + lastShardSize
}

type ObjectPartInfo struct {
	ETag       string            `json:"etag,omitempty" msg:"e"`
	Number     int               `json:"number" msg:"n"`
	Size       int64             `json:"size" msg:"s"`        // Size of the part on the disk.
	ActualSize int64             `json:"actualSize" msg:"as"` // Original size of the part without compression or encryption bytes.

}

type tierMetrics struct {
	sync.RWMutex  // protects requestsCount only
	requestsCount map[string]struct {
		success int64
		failure int64
	}
	histogram *prometheus.HistogramVec
}

var globalTierMetrics = tierMetrics{
	requestsCount: make(map[string]struct {
		success int64
		failure int64
	}),
	histogram: prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Name:    "tier_ttlb_seconds",

// signed byte values.
// We compute and return both.
func (b *block) computeChecksum() (unsigned, signed int64) {
	for i, c := range b {
		if 148 <= i && i < 156 {
			c = ' ' // Treat the checksum field itself as all spaces.
		}
		unsigned += int64(c)
		signed += int64(int8(c))
	}
	return unsigned, signed
}

// reset clears the block with all zeros.
func (b *block) reset() {

var _healingMetric_index = [...]uint8{0, 6, 12, 31}

func (i healingMetric) String() string {
	if i >= healingMetric(len(_healingMetric_index)-1) {
		return "healingMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _healingMetric_name[_healingMetric_index[i]:_healingMetric_index[i+1]]

var _batchJobMetric_index = [...]uint8{0, 11, 22, 28}

func (i batchJobMetric) String() string {
	if i >= batchJobMetric(len(_batchJobMetric_index)-1) {
		return "batchJobMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _batchJobMetric_name[_batchJobMetric_index[i]:_batchJobMetric_index[i+1]]