feat: Add Actions API rerun endpoints for runs and jobs (#36768)

This PR adds official REST API endpoints to rerun Gitea Actions workflow
runs and individual jobs:

* POST /api/v1/repos/{owner}/{repo}/actions/runs/{run}/rerun
* POST /api/v1/repos/{owner}/{repo}/actions/runs/{run}/jobs/{job_id}/rerun

It reuses the existing rerun behavior from the web UI and exposes it
through stable API routes.

---------

Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

models/repo/repo.go

@@ -422,52 +422,37 @@ func (repo *Repository) UnitEnabled(ctx context.Context, tp unit.Type) bool {
 	return false
 }
 
-// MustGetUnit always returns a RepoUnit object
+// MustGetUnit always returns a RepoUnit object even if the unit doesn't exist (not enabled)
 func (repo *Repository) MustGetUnit(ctx context.Context, tp unit.Type) *RepoUnit {
 	ru, err := repo.GetUnit(ctx, tp)
 	if err == nil {
 		return ru
 	}
-
+	if !errors.Is(err, util.ErrNotExist) {
+		setting.PanicInDevOrTesting("Failed to get unit %v for repository %d: %v", tp, repo.ID, err)
+	}
+	ru = &RepoUnit{RepoID: repo.ID, Type: tp}
 	switch tp {
 	case unit.TypeExternalWiki:
-		return &RepoUnit{
-			Type:   tp,
-			Config: new(ExternalWikiConfig),
-		}
+		ru.Config = new(ExternalWikiConfig)
 	case unit.TypeExternalTracker:
-		return &RepoUnit{
-			Type:   tp,
-			Config: new(ExternalTrackerConfig),
-		}
+		ru.Config = new(ExternalTrackerConfig)
 	case unit.TypePullRequests:
-		return &RepoUnit{
-			Type:   tp,
-			Config: new(PullRequestsConfig),
-		}
+		ru.Config = new(PullRequestsConfig)
 	case unit.TypeIssues:
-		return &RepoUnit{
-			Type:   tp,
-			Config: new(IssuesConfig),
-		}
+		ru.Config = new(IssuesConfig)
 	case unit.TypeActions:
-		return &RepoUnit{
-			Type:   tp,
-			Config: new(ActionsConfig),
-		}
+		ru.Config = new(ActionsConfig)
 	case unit.TypeProjects:
-		cfg := new(ProjectsConfig)
-		cfg.ProjectsMode = ProjectsModeNone
-		return &RepoUnit{
-			Type:   tp,
-			Config: cfg,
+		ru.Config = new(ProjectsConfig)
+	default: // other units don't have config
+	}
+	if ru.Config != nil {
+		if err = ru.Config.FromDB(nil); err != nil {
+			setting.PanicInDevOrTesting("Failed to load default config for unit %v of repository %d: %v", tp, repo.ID, err)
 		}
 	}
-
-	return &RepoUnit{
-		Type:   tp,
-		Config: new(UnitConfig),
-	}
+	return ru
 }
 
 // GetUnit returns a RepoUnit object

models/repo/repo_unit.go

@@ -241,6 +241,8 @@ type ProjectsConfig struct {
 
 // FromDB fills up a ProjectsConfig from serialized format.
 func (cfg *ProjectsConfig) FromDB(bs []byte) error {
+	// TODO: remove GetProjectsMode, only use ProjectsMode
+	cfg.ProjectsMode = ProjectsModeAll
 	return json.UnmarshalHandleDoubleEncode(bs, &cfg)
 }