Propagate install_if and provider_priority to APKINDEX

Turn InstallIf into an array as strings (as it has the format as
depend/provides), and add ProviderPriority. Format them into the
geenrated APKINDEX file.

Resolves go-gitea#28704

modules/packages/alpine/metadata.go

@@ -55,16 +55,17 @@ type VersionMetadata struct {
 }
 
 type FileMetadata struct {
-	Checksum     string   `json:"checksum"`
-	Packager     string   `json:"packager,omitempty"`
-	BuildDate    int64    `json:"build_date,omitempty"`
-	Size         int64    `json:"size,omitempty"`
-	Architecture string   `json:"architecture,omitempty"`
-	Origin       string   `json:"origin,omitempty"`
-	CommitHash   string   `json:"commit_hash,omitempty"`
-	InstallIf    string   `json:"install_if,omitempty"`
-	Provides     []string `json:"provides,omitempty"`
-	Dependencies []string `json:"dependencies,omitempty"`
+	Checksum         string   `json:"checksum"`
+	Packager         string   `json:"packager,omitempty"`
+	BuildDate        int64    `json:"build_date,omitempty"`
+	Size             int64    `json:"size,omitempty"`
+	Architecture     string   `json:"architecture,omitempty"`
+	Origin           string   `json:"origin,omitempty"`
+	CommitHash       string   `json:"commit_hash,omitempty"`
+	InstallIf        []string `json:"install_if,omitempty"`
+	Provides         []string `json:"provides,omitempty"`
+	Dependencies     []string `json:"dependencies,omitempty"`
+	ProviderPriority int64    `json:"provider_priority,omitempty"`
 }
 
 // ParsePackage parses the Alpine package file
@@ -179,7 +180,7 @@ func ParsePackageInfo(r io.Reader) (*Package, error) {
 		case "license":
 			p.VersionMetadata.License = value
 		case "install_if":
-			p.FileMetadata.InstallIf = value
+			p.FileMetadata.InstallIf = append(p.FileMetadata.InstallIf, value)
 		case "provides":
 			if value != "" {
 				p.FileMetadata.Provides = append(p.FileMetadata.Provides, value)
@@ -188,6 +189,11 @@ func ParsePackageInfo(r io.Reader) (*Package, error) {
 			if value != "" {
 				p.FileMetadata.Dependencies = append(p.FileMetadata.Dependencies, value)
 			}
+		case "provider_priority":
+			n, err := strconv.ParseInt(value, 10, 64)
+			if err == nil {
+				p.FileMetadata.ProviderPriority = n
+			}
 		}
 	}
 	if err := scanner.Err(); err != nil {

modules/packages/alpine/metadata_test.go

@@ -36,7 +36,8 @@ commit = 1111e709613fbc979651b09ac2bc27c6591a9999
 maintainer = ` + packageMaintainer + `
 license = MIT
 depend = common
-install_if = value
+install_if = package1=1.40r3
+install_if = !bar
 depend = gitea
 provides = common
 provides = gitea`)
@@ -95,7 +96,7 @@ func TestParsePackage(t *testing.T) {
 		assert.NoError(t, err)
 		assert.NotNil(t, p)
 
-		assert.Equal(t, "Q1SRYURM5+uQDqfHSwTnNIOIuuDVQ=", p.FileMetadata.Checksum)
+		assert.Equal(t, "Q1nExxVXVcTXgbZFLzqlwgJlQELxM=", p.FileMetadata.Checksum)
 	})
 }
 
@@ -136,7 +137,7 @@ func TestParsePackageInfo(t *testing.T) {
 		assert.Equal(t, "aarch64", p.FileMetadata.Architecture)
 		assert.Equal(t, "origin", p.FileMetadata.Origin)
 		assert.Equal(t, "1111e709613fbc979651b09ac2bc27c6591a9999", p.FileMetadata.CommitHash)
-		assert.Equal(t, "value", p.FileMetadata.InstallIf)
+		assert.Equal(t, []string{"package1=1.40r3", "!bar"}, p.FileMetadata.InstallIf)
 		assert.ElementsMatch(t, []string{"common", "gitea"}, p.FileMetadata.Provides)
 		assert.ElementsMatch(t, []string{"common", "gitea"}, p.FileMetadata.Dependencies)
 	})

services/packages/alpine/repository.go

@@ -230,6 +230,12 @@ func buildPackagesIndex(ctx context.Context, ownerID int64, repoVersion *package
 		if len(pd.FileMetadata.Provides) > 0 {
 			fmt.Fprintf(&buf, "p:%s\n", strings.Join(pd.FileMetadata.Provides, " "))
 		}
+		if len(pd.FileMetadata.InstallIf) > 0 {
+			fmt.Fprintf(&buf, "i:%s\n", strings.Join(pd.FileMetadata.InstallIf, " "))
+		}
+		if pd.FileMetadata.ProviderPriority > 0 {
+			fmt.Fprintf(&buf, "k:%d\n", pd.FileMetadata.ProviderPriority)
+		}
 		fmt.Fprint(&buf, "\n")
 	}