Add `DEFAULT_MIRROR_REPO_UNITS` and `DEFAULT_TEMPLATE_REPO_UNITS` options (#32416)

Resolve #30350

The action unit of mirrors and templates should be disabled by default.
This PR adds `DEFAULT_MIRROR_REPO_UNITS` and
`DEFAULT_TEMPLATE_REPO_UNITS` options to allow users to specify default
units for mirrors and templates.

Thanks to @lng2020 for the
[idea](https://github.com/go-gitea/gitea/issues/30350#issuecomment-2053942243)

4 files changed, 58 insertions, 1 deletions

diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index f201ff1d19..7d5b3961bc 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -1007,6 +1007,14 @@ LEVEL = Info
 ;; The set of allowed values and rules are the same as DEFAULT_REPO_UNITS.
 ;DEFAULT_FORK_REPO_UNITS = repo.code,repo.pulls
 ;;
+;; Comma separated list of default mirror repo units.
+;; The set of allowed values and rules are the same as DEFAULT_REPO_UNITS.
+;DEFAULT_MIRROR_REPO_UNITS = repo.code,repo.releases,repo.issues,repo.wiki,repo.projects,repo.packages
+;;
+;; Comma separated list of default template repo units.
+;; The set of allowed values and rules are the same as DEFAULT_REPO_UNITS.
+;DEFAULT_TEMPLATE_REPO_UNITS = repo.code,repo.releases,repo.issues,repo.pulls,repo.wiki,repo.projects,repo.packages
+;;
 ;; Prefix archive files by placing them in a directory named after the repository
 ;PREFIX_ARCHIVE_FILES = true
 ;;
diff --git a/models/unit/unit.go b/models/unit/unit.go
index 3b62e5f982..c816fc6c68 100644
--- a/models/unit/unit.go
+++ b/models/unit/unit.go
@@ -80,6 +80,27 @@ var (
 		TypePullRequests,
 	}
 
+	// DefaultMirrorRepoUnits contains the default unit types for mirrors
+	DefaultMirrorRepoUnits = []Type{
+		TypeCode,
+		TypeIssues,
+		TypeReleases,
+		TypeWiki,
+		TypeProjects,
+		TypePackages,
+	}
+
+	// DefaultTemplateRepoUnits contains the default unit types for templates
+	DefaultTemplateRepoUnits = []Type{
+		TypeCode,
+		TypeIssues,
+		TypePullRequests,
+		TypeReleases,
+		TypeWiki,
+		TypeProjects,
+		TypePackages,
+	}
+
 	// NotAllowedDefaultRepoUnits contains units that can't be default
 	NotAllowedDefaultRepoUnits = []Type{
 		TypeExternalWiki,
@@ -147,6 +168,7 @@ func LoadUnitConfig() error {
 	if len(DefaultRepoUnits) == 0 {
 		return errors.New("no default repository units found")
 	}
+	// default fork repo units
 	setDefaultForkRepoUnits, invalidKeys := FindUnitTypes(setting.Repository.DefaultForkRepoUnits...)
 	if len(invalidKeys) > 0 {
 		log.Warn("Invalid keys in default fork repo units: %s", strings.Join(invalidKeys, ", "))
@@ -155,6 +177,24 @@ func LoadUnitConfig() error {
 	if len(DefaultForkRepoUnits) == 0 {
 		return errors.New("no default fork repository units found")
 	}
+	// default mirror repo units
+	setDefaultMirrorRepoUnits, invalidKeys := FindUnitTypes(setting.Repository.DefaultMirrorRepoUnits...)
+	if len(invalidKeys) > 0 {
+		log.Warn("Invalid keys in default mirror repo units: %s", strings.Join(invalidKeys, ", "))
+	}
+	DefaultMirrorRepoUnits = validateDefaultRepoUnits(DefaultMirrorRepoUnits, setDefaultMirrorRepoUnits)
+	if len(DefaultMirrorRepoUnits) == 0 {
+		return errors.New("no default mirror repository units found")
+	}
+	// default template repo units
+	setDefaultTemplateRepoUnits, invalidKeys := FindUnitTypes(setting.Repository.DefaultTemplateRepoUnits...)
+	if len(invalidKeys) > 0 {
+		log.Warn("Invalid keys in default template repo units: %s", strings.Join(invalidKeys, ", "))
+	}
+	DefaultTemplateRepoUnits = validateDefaultRepoUnits(DefaultTemplateRepoUnits, setDefaultTemplateRepoUnits)
+	if len(DefaultTemplateRepoUnits) == 0 {
+		return errors.New("no default template repository units found")
+	}
 	return nil
 }
 
diff --git a/modules/setting/repository.go b/modules/setting/repository.go
index 8656ebc7ec..14cf5805c0 100644
--- a/modules/setting/repository.go
+++ b/modules/setting/repository.go
@@ -43,6 +43,8 @@ var (
 		DisabledRepoUnits                       []string
 		DefaultRepoUnits                        []string
 		DefaultForkRepoUnits                    []string
+		DefaultMirrorRepoUnits                  []string
+		DefaultTemplateRepoUnits                []string
 		PrefixArchiveFiles                      bool
 		DisableMigrations                       bool
 		DisableStars                            bool `ini:"DISABLE_STARS"`
@@ -161,6 +163,8 @@ var (
 		DisabledRepoUnits:                       []string{},
 		DefaultRepoUnits:                        []string{},
 		DefaultForkRepoUnits:                    []string{},
+		DefaultMirrorRepoUnits:                  []string{},
+		DefaultTemplateRepoUnits:                []string{},
 		PrefixArchiveFiles:                      true,
 		DisableMigrations:                       false,
 		DisableStars:                            false,
diff --git a/services/repository/create.go b/services/repository/create.go
index 261ac7fccc..0207f12a33 100644
--- a/services/repository/create.go
+++ b/services/repository/create.go
@@ -381,8 +381,13 @@ func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, re
 
 	// insert units for repo
 	defaultUnits := unit.DefaultRepoUnits
-	if isFork {
+	switch {
+	case isFork:
 		defaultUnits = unit.DefaultForkRepoUnits
+	case repo.IsMirror:
+		defaultUnits = unit.DefaultMirrorRepoUnits
+	case repo.IsTemplate:
+		defaultUnits = unit.DefaultTemplateRepoUnits
 	}
 	units := make([]repo_model.RepoUnit, 0, len(defaultUnits))
 	for _, tp := range defaultUnits {