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

package cmd

import (
	"context"
	"fmt"
	"net/http"
	"net/url"
	"os"
	"testing"
	"time"
)

func niceError(code APIErrorCode) string {
	// Special-handle ErrNone
	if code == ErrNone {
		return "ErrNone"
	}

	return fmt.Sprintf("%s (%s)", errorCodes[code].Code, errorCodes[code].Description)
}

func TestParseCredentialHeader(t *testing.T) {
	sampleTimeStr := UTCNow().Format(yyyymmdd)

	testCases := []struct {
		inputCredentialStr  string
		expectedCredentials credentialHeader
		expectedErrCode     APIErrorCode
	}{
		// Test Case - 1.
		// Test case with no '=' in te inputCredentialStr.
		{
			inputCredentialStr:  "Credential",
			expectedCredentials: credentialHeader{},
			expectedErrCode:     ErrMissingFields,

}

// APIErrorCode type of error status.
type APIErrorCode int

//go:generate stringer -type=APIErrorCode -trimprefix=Err $GOFILE

// Error codes, non exhaustive list - http://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html
const (
	ErrNone APIErrorCode = iota
	ErrAccessDenied
	ErrBadDigest
	ErrEntityTooSmall
	ErrEntityTooLarge

		req.ContentLength = int64(createBucketConfigBuffer.Len())
		return req
	}

	testCases := []struct {
		request            *http.Request
		serverConfigRegion string
		expectedCode       APIErrorCode
	}{
		// Test case - 1.
		{createExpectedRequest(&http.Request{}, "eu-central-1"), globalMinioDefaultRegion, ErrNone},
		// Test case - 2.
		// In case of empty request body ErrNone is returned.

// error while parsing and validating.
func calculateSeedSignature(r *http.Request, trailers bool) (cred auth.Credentials, signature string, region string, date time.Time, errCode APIErrorCode) {
	// Copy request.
	req := *r

	// Save authorization header.
	v4Auth := req.Header.Get(xhttp.Authorization)

	// Parse signature version '4' header.

		prefix, token, startAfter, delimiter string
		fetchOwner                           bool
		maxKeys                              int
		encodingType                         string
		errCode                              APIErrorCode
	}{
		{
			values: url.Values{
				"prefix":             []string{"photos/"},
				"continuation-token": []string{"dG9rZW4="},
				"start-after":        []string{"start-after"},

	owner := &Owner{
		ID:          globalMinioDefaultOwnerID,
		DisplayName: "minio",
	}
	data := ListVersionsResponse{}
	var lastObjMetaName string
	var tagErr, metaErr APIErrorCode = -1, -1

	for _, object := range resp.Objects {
		if object.Name == "" {
			continue
		}
		// Cache checks for the same object
		if metadata != nil && lastObjMetaName != object.Name {

	stsRouter.Methods(http.MethodPost).HandlerFunc(httpTraceAll(sts.AssumeRoleWithCustomToken)).
		Queries(stsAction, customTokenIdentity).
		Queries(stsVersion, stsAPIVersion)
}

func apiToSTSError(authErr APIErrorCode) (stsErrCode STSErrorCode) {
	switch authErr {
	case ErrSignatureDoesNotMatch, ErrInvalidAccessKeyID, ErrAccessKeyDisabled:
		return ErrSTSAccessDenied
	case ErrServerNotInitialized:
		return ErrSTSNotInitialized

	copyDirective    = "COPY"
	replaceDirective = "REPLACE"
	accessDirective  = "ACCESS"
)

// Parses location constraint from the incoming reader.
func parseLocationConstraint(r *http.Request) (location string, s3Error APIErrorCode) {
	// If the request has no body with content-length set to 0,
	// we do not have to validate location constraint. Bucket will
	// be created at default region.
	locationConstraint := createBucketLocationConfiguration{}

	// validated first.
	"x-amz-date",
	"date",
}

// parseAmzDateHeader - parses supported amz date headers, in
// supported amz date formats.
func parseAmzDateHeader(req *http.Request) (time.Time, APIErrorCode) {
	for _, amzDateHeader := range amzDateHeaders {
		amzDateStr := req.Header.Get(amzDateHeader)
		if amzDateStr != "" {
			t, err := amztime.Parse(amzDateStr)
			if err != nil {