Add Arch package registry (#32692)

Close #25037
Close #31037

This PR adds a Arch package registry usable with pacman.

![grafik](https://github.com/user-attachments/assets/81cdb0c2-02f9-4733-bee2-e48af6b45224)

Rewrite of #25396 and #31037. You can follow [this
tutorial](https://wiki.archlinux.org/title/Creating_packages) to build a
package for testing.

Docs PR: https://gitea.com/gitea/docs/pulls/111

Co-authored-by: [d1nch8g@ion.lc](mailto:d1nch8g@ion.lc)
Co-authored-by: @ExplodingDragon

---------

Co-authored-by: dancheg97 <dancheg97@fmnx.su>
Co-authored-by: dragon <ExplodingFKL@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

models/packages/arch/search.go

@@ -0,0 +1,38 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package arch
+
+import (
+	"context"
+
+	packages_model "code.gitea.io/gitea/models/packages"
+	arch_module "code.gitea.io/gitea/modules/packages/arch"
+)
+
+// GetRepositories gets all available repositories
+func GetRepositories(ctx context.Context, ownerID int64) ([]string, error) {
+	return packages_model.GetDistinctPropertyValues(
+		ctx,
+		packages_model.TypeArch,
+		ownerID,
+		packages_model.PropertyTypeFile,
+		arch_module.PropertyRepository,
+		nil,
+	)
+}
+
+// GetArchitectures gets all available architectures for the given repository
+func GetArchitectures(ctx context.Context, ownerID int64, repository string) ([]string, error) {
+	return packages_model.GetDistinctPropertyValues(
+		ctx,
+		packages_model.TypeArch,
+		ownerID,
+		packages_model.PropertyTypeFile,
+		arch_module.PropertyArchitecture,
+		&packages_model.DistinctPropertyDependency{
+			Name:  arch_module.PropertyRepository,
+			Value: repository,
+		},
+	)
+}

models/packages/descriptor.go

@@ -13,6 +13,7 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/json"
 	"code.gitea.io/gitea/modules/packages/alpine"
+	"code.gitea.io/gitea/modules/packages/arch"
 	"code.gitea.io/gitea/modules/packages/cargo"
 	"code.gitea.io/gitea/modules/packages/chef"
 	"code.gitea.io/gitea/modules/packages/composer"
@@ -150,6 +151,8 @@ func GetPackageDescriptor(ctx context.Context, pv *PackageVersion) (*PackageDesc
 	switch p.Type {
 	case TypeAlpine:
 		metadata = &alpine.VersionMetadata{}
+	case TypeArch:
+		metadata = &arch.VersionMetadata{}
 	case TypeCargo:
 		metadata = &cargo.Metadata{}
 	case TypeChef:

models/packages/package.go

@@ -31,6 +31,7 @@ type Type string
 // List of supported packages
 const (
 	TypeAlpine    Type = "alpine"
+	TypeArch      Type = "arch"
 	TypeCargo     Type = "cargo"
 	TypeChef      Type = "chef"
 	TypeComposer  Type = "composer"
@@ -55,6 +56,7 @@ const (
 
 var TypeList = []Type{
 	TypeAlpine,
+	TypeArch,
 	TypeCargo,
 	TypeChef,
 	TypeComposer,
@@ -82,6 +84,8 @@ func (pt Type) Name() string {
 	switch pt {
 	case TypeAlpine:
 		return "Alpine"
+	case TypeArch:
+		return "Arch"
 	case TypeCargo:
 		return "Cargo"
 	case TypeChef:
@@ -131,6 +135,8 @@ func (pt Type) SVGName() string {
 	switch pt {
 	case TypeAlpine:
 		return "gitea-alpine"
+	case TypeArch:
+		return "gitea-arch"
 	case TypeCargo:
 		return "gitea-cargo"
 	case TypeChef:

models/packages/package_file.go

@@ -221,6 +221,11 @@ func SearchFiles(ctx context.Context, opts *PackageFileSearchOptions) ([]*Packag
 	return pfs, count, err
 }
 
+// HasFiles tests if there are files of packages matching the search options
+func HasFiles(ctx context.Context, opts *PackageFileSearchOptions) (bool, error) {
+	return db.Exist[PackageFile](ctx, opts.toConds())
+}
+
 // CalculateFileSize sums up all blob sizes matching the search options.
 // It does NOT respect the deduplication of blobs.
 func CalculateFileSize(ctx context.Context, opts *PackageFileSearchOptions) (int64, error) {