"istio.io/istio/pkg/slices"
	"istio.io/istio/pkg/test/env"
	"istio.io/istio/pkg/test/util/retry"
)

const (
	cniConfSubDir    = "/testdata/pre/"
	k8sSvcAcctSubDir = "/testdata/k8s_svcacct/"

	defaultFileMode = 0o644
)

func getEnv(key, fallback string) string {
	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	return fallback
}

func mktemp(dir, prefix string, t *testing.T) string {
	t.Helper()

	// write "ResetID"
	err = en.Append(0xa7, 0x52, 0x65, 0x73, 0x65, 0x74, 0x49, 0x44)
	if err != nil {
		return
	}
	err = en.WriteString(z.ResetID)
	if err != nil {
		err = msgp.WrapError(err, "ResetID")
		return
	}
	// write "ResetBeforeDate"
	err = en.Append(0xaf, 0x52, 0x65, 0x73, 0x65, 0x74, 0x42, 0x65, 0x66, 0x6f, 0x72, 0x65, 0x44, 0x61, 0x74, 0x65)
	if err != nil {
		return
	}

			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *LockArgs) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 5
	// write "UID"
	err = en.Append(0x85, 0xa3, 0x55, 0x49, 0x44)
	if err != nil {
		return
	}
	err = en.WriteString(z.UID)
	if err != nil {
		err = msgp.WrapError(err, "UID")
		return
	}
	// write "Resources"

	err = en.Append(0xb1, 0x54, 0x6f, 0x74, 0x61, 0x6c, 0x44, 0x72, 0x6f, 0x70, 0x70, 0x65, 0x64, 0x43, 0x6f, 0x75, 0x6e, 0x74)
	if err != nil {
		return
	}
	err = en.WriteUint64(z.TotalDroppedCount)
	if err != nil {
		err = msgp.WrapError(err, "TotalDroppedCount")
		return
	}
	// write "TotalDroppedBytes"

	fi2, err := os.Stat(tmpFile)
	if err != nil {
		t.Fatalf("Error Stat(): %v", err)
	}
	if !SameFile(fi1, fi2) {
		t.Fatal("Expected the files to be same")
	}
	if err = os.WriteFile(tmpFile, []byte("aaa"), 0o644); err != nil {
		t.Fatal(err)
	}
	fi2, err = os.Stat(tmpFile)
	if err != nil {
		t.Fatalf("Error Stat(): %v", err)
	}
	if SameFile(fi1, fi2) {
		t.Fatal("Expected the files not to be same")
	}
}

// MarshalMsg implements msgp.Marshaler
func (z *MetricV2) MarshalMsg(b []byte) (o []byte, err error) {
	o = msgp.Require(b, z.Msgsize())
	// map header, size 6
	// string "Description"
	o = append(o, 0x86, 0xab, 0x44, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f, 0x6e)
	o, err = z.Description.MarshalMsg(o)
	if err != nil {
		err = msgp.WrapError(err, "Description")
		return
	}
	// string "StaticLabels"

			if err != nil {
				return fmt.Errorf("failed to marshal CNI config map in file %s: %w", in.cniConfigFilepath, err)
			}
			if err = file.AtomicWrite(in.cniConfigFilepath, cniConfig, os.FileMode(0o644)); err != nil {
				return fmt.Errorf("failed to write updated CNI config to file %s: %w", in.cniConfigFilepath, err)
			}
		} else {
			installLog.Infof("removing Istio CNI config file: %s", in.cniConfigFilepath)

	} else if key0.Curve != elliptic.P256() {
		t.Fatal("Key[0] is not using P-256 curve")
	} else if !bytes.Equal(key0.X.Bytes(), []byte{
		0x30, 0xa0, 0x42, 0x4c, 0xd2,
		0x1c, 0x29, 0x44, 0x83, 0x8a, 0x2d, 0x75, 0xc9, 0x2b, 0x37, 0xe7, 0x6e, 0xa2,
		0xd, 0x9f, 0x0, 0x89, 0x3a, 0x3b, 0x4e, 0xee, 0x8a, 0x3c, 0xa, 0xaf, 0xec, 0x3e,
	}) {
		t.Fatalf("Bad key[0].X, got %v", key0.X.Bytes())

	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

	file := path.Join(os.TempDir(), "issue")
	if err := os.WriteFile(file, []byte(""), 0o644); err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(file)

	// Check if file is given.
	if _, err := readDir(path.Join(file, "mydir")); err != errFileNotFound {

		}
	}
	return
}

// EncodeMsg implements msgp.Encodable
func (z *BatchJobRequest) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 6
	// write "ID"
	err = en.Append(0x86, 0xa2, 0x49, 0x44)
	if err != nil {
		return
	}
	err = en.WriteString(z.ID)
	if err != nil {
		err = msgp.WrapError(err, "ID")
		return
	}
	// write "User"
	err = en.Append(0xa4, 0x55, 0x73, 0x65, 0x72)