Fix incorrect relative/absolute URL usages (#29531) (#29547)

Backport #29531 by wxiaoguang

Add two "HTMLURL" methods for PackageDescriptor. 
And rename "FullWebLink" to "VersionWebLink"

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/packages/descriptor.go

@@ -70,16 +70,26 @@ type PackageFileDescriptor struct {
 	Properties PackagePropertyList
 }
 
-// PackageWebLink returns the package web link
+// PackageWebLink returns the relative package web link
 func (pd *PackageDescriptor) PackageWebLink() string {
 	return fmt.Sprintf("%s/-/packages/%s/%s", pd.Owner.HomeLink(), string(pd.Package.Type), url.PathEscape(pd.Package.LowerName))
 }
 
-// FullWebLink returns the package version web link
-func (pd *PackageDescriptor) FullWebLink() string {
+// VersionWebLink returns the relative package version web link
+func (pd *PackageDescriptor) VersionWebLink() string {
 	return fmt.Sprintf("%s/%s", pd.PackageWebLink(), url.PathEscape(pd.Version.LowerVersion))
 }
 
+// PackageHTMLURL returns the absolute package HTML URL
+func (pd *PackageDescriptor) PackageHTMLURL() string {
+	return fmt.Sprintf("%s/-/packages/%s/%s", pd.Owner.HTMLURL(), string(pd.Package.Type), url.PathEscape(pd.Package.LowerName))
+}
+
+// VersionHTMLURL returns the absolute package version HTML URL
+func (pd *PackageDescriptor) VersionHTMLURL() string {
+	return fmt.Sprintf("%s/%s", pd.PackageHTMLURL(), url.PathEscape(pd.Version.LowerVersion))
+}
+
 // CalculateBlobSize returns the total blobs size in bytes
 func (pd *PackageDescriptor) CalculateBlobSize() int64 {
 	size := int64(0)

routers/api/packages/npm/api.go

@@ -12,6 +12,7 @@ import (
 
 	packages_model "code.gitea.io/gitea/models/packages"
 	npm_module "code.gitea.io/gitea/modules/packages/npm"
+	"code.gitea.io/gitea/modules/setting"
 )
 
 func createPackageMetadataResponse(registryURL string, pds []*packages_model.PackageDescriptor) *npm_module.PackageMetadata {
@@ -98,7 +99,7 @@ func createPackageSearchResponse(pds []*packages_model.PackageDescriptor, total
 				Maintainers: []npm_module.User{}, // npm cli needs this field
 				Keywords:    metadata.Keywords,
 				Links: &npm_module.PackageSearchPackageLinks{
-					Registry: pd.FullWebLink(),
+					Registry: setting.AppURL + "api/packages/" + pd.Owner.Name + "/npm",
 					Homepage: metadata.ProjectURL,
 				},
 			},

routers/web/user/package.go

@@ -161,7 +161,7 @@ func RedirectToLastVersion(ctx *context.Context) {
 		return
 	}
 
-	ctx.Redirect(pd.FullWebLink())
+	ctx.Redirect(pd.VersionWebLink())
 }
 
 // ViewPackageVersion displays a single package version

services/convert/package.go

@@ -35,7 +35,7 @@ func ToPackage(ctx context.Context, pd *packages.PackageDescriptor, doer *user_m
 		Name:       pd.Package.Name,
 		Version:    pd.Version.Version,
 		CreatedAt:  pd.Version.CreatedUnix.AsTime(),
-		HTMLURL:    pd.FullWebLink(),
+		HTMLURL:    pd.VersionHTMLURL(),
 	}, nil
 }