Normalize NuGet package version on upload (#22186)

Fixes #22178

After this change upload versions with different semver metadata are
treated as the same version and trigger a duplicated version error.

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

modules/packages/nuget/metadata.go

@@ -5,8 +5,10 @@ package nuget
 
 import (
 	"archive/zip"
+	"bytes"
 	"encoding/xml"
 	"errors"
+	"fmt"
 	"io"
 	"path/filepath"
 	"regexp"
@@ -182,7 +184,23 @@ func ParseNuspecMetaData(r io.Reader) (*Package, error) {
 	return &Package{
 		PackageType: packageType,
 		ID:          p.Metadata.ID,
-		Version:     v.String(),
+		Version:     toNormalizedVersion(v),
 		Metadata:    m,
 	}, nil
 }
+
+// https://learn.microsoft.com/en-us/nuget/concepts/package-versioning#normalized-version-numbers
+// https://github.com/NuGet/NuGet.Client/blob/dccbd304b11103e08b97abf4cf4bcc1499d9235a/src/NuGet.Core/NuGet.Versioning/VersionFormatter.cs#L121
+func toNormalizedVersion(v *version.Version) string {
+	var buf bytes.Buffer
+	segments := v.Segments64()
+	fmt.Fprintf(&buf, "%d.%d.%d", segments[0], segments[1], segments[2])
+	if len(segments) > 3 && segments[3] > 0 {
+		fmt.Fprintf(&buf, ".%d", segments[3])
+	}
+	pre := v.Prerelease()
+	if pre != "" {
+		fmt.Fprint(&buf, "-", pre)
+	}
+	return buf.String()
+}

modules/packages/nuget/metadata_test.go

@@ -146,6 +146,19 @@ func TestParseNuspecMetaData(t *testing.T) {
 		assert.Len(t, deps, 1)
 		assert.Equal(t, dependencyID, deps[0].ID)
 		assert.Equal(t, dependencyVersion, deps[0].Version)
+
+		t.Run("NormalizedVersion", func(t *testing.T) {
+			np, err := ParseNuspecMetaData(strings.NewReader(`<?xml version="1.0" encoding="utf-8"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
+  <metadata>
+	<id>test</id>
+	<version>1.04.5.2.5-rc.1+metadata</version>
+  </metadata>
+</package>`))
+			assert.NoError(t, err)
+			assert.NotNil(t, np)
+			assert.Equal(t, "1.4.5.2-rc.1", np.Version)
+		})
 	})
 
 	t.Run("Symbols Package", func(t *testing.T) {