// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"encoding/base64"
	"fmt"
	"math/rand"
	"net/http"
	"runtime"
	"strconv"
	"strings"
	"time"

	jsoniter "github.com/json-iterator/go"
	"github.com/minio/minio-go/v7/pkg/tags"
	"github.com/minio/minio/internal/crypto"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/minio/internal/kms"

	for k, v := range objInfo.Metadata {
		oi.UserDefined[k] = v[0]
	}

	ce, ok := oi.UserDefined[xhttp.ContentEncoding]
	if !ok {
		ce, ok = oi.UserDefined[strings.ToLower(xhttp.ContentEncoding)]
	}
	if ok {
		oi.ContentEncoding = ce
	}

	_, ok = oi.UserDefined[xhttp.AmzStorageClass]
	if !ok {
		oi.UserDefined[xhttp.AmzStorageClass] = objInfo.StorageClass
	}

	for k, v := range objInfo.UserMetadata {

     {{.Prompt}} {{.HelpName}} http://node{1...32}.example.com/mnt/export{1...32}

  4. Start distributed MinIO server in an expanded setup, run the following command on all the nodes
     {{.Prompt}} {{.HelpName}} http://node{1...16}.example.com/mnt/export{1...32} \
            http://node{17...64}.example.com/mnt/export{1...64}

	return cleanMetadataKeys(metadata, "md5Sum", "etag", "expires", xhttp.AmzObjectTagging, "last-modified", VersionPurgeStatusKey)
}

// Filter X-Amz-Storage-Class field only if it is set to STANDARD.
// This is done since AWS S3 doesn't return STANDARD Storage class as response header.
func removeStandardStorageClass(metadata map[string]string) map[string]string {
	if metadata[xhttp.AmzStorageClass] == storageclass.STANDARD {

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package plugin

import (
	"bytes"
	"encoding/json"
	"io"
	"net/http"
	"time"

	"github.com/minio/minio/internal/config"
	xhttp "github.com/minio/minio/internal/http"
	xnet "github.com/minio/pkg/v3/net"
	"github.com/minio/pkg/v3/policy"
)

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"errors"
	"math"
	"net/http"

	"github.com/minio/minio/internal/auth"
	objectlock "github.com/minio/minio/internal/bucket/object/lock"
	"github.com/minio/minio/internal/bucket/replication"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/minio/internal/logger"

	return sha256Sum, releaseTime, releaseInfo, err
}

func getUpdateTransport(timeout time.Duration) http.RoundTripper {
	var updateTransport http.RoundTripper = &http.Transport{
		Proxy:                 http.ProxyFromEnvironment,
		DialContext:           xhttp.NewInternodeDialContext(timeout, globalTCPOptions),
		IdleConnTimeout:       timeout,
		TLSHandshakeTimeout:   timeout,

	}
	result.Endpoint = rp.String()
	req, err := http.NewRequestWithContext(ctx, http.MethodPost, reqURL.String(), reader)
	if err != nil {
		result.Error = err.Error()
		return
	}
	client := &http.Client{
		Transport: globalRemoteTargetTransport,
	}
	resp, err := client.Do(req)
	if err != nil {
		result.Error = err.Error()
		return
	}
	defer xhttp.DrainBody(resp.Body)

// out of HTTP "chunked" format before returning it.
// The s3ChunkedReader returns io.EOF when the final 0-length chunk is read.
//
// NewChunkedReader is not needed by normal applications. The http package
// automatically decodes chunking when reading response bodies.
func newSignV4ChunkedReader(req *http.Request, trailer bool) (io.ReadCloser, APIErrorCode) {

	return strconv.AppendInt(etag, n, 10)
}

// Set adds the ETag to the HTTP headers. It overwrites any
// existing ETag entry.
//
// Due to legacy S3 clients, that make incorrect assumptions
// about HTTP headers, Set should be used instead of
// http.Header.Set(...). Otherwise, some S3 clients will not
// able to extract the ETag.
func Set(etag ETag, h http.Header) {
	// Some (broken) S3 clients expect the ETag header to