package vcs import ( "os" "go.alanpearce.eu/website/internal/config" "go.alanpearce.eu/website/internal/log" "github.com/go-git/go-git/v5" "github.com/pkg/errors" ) type Config struct { LocalPath string RemoteURL config.URL Branch string `conf:"default:main"` } type Repository struct { repo *git.Repository } func CloneOrUpdate(cfg *Config) (*Repository, error) { gr, err := git.PlainClone(cfg.LocalPath, false, &git.CloneOptions{ URL: cfg.RemoteURL.String(), Progress: os.Stdout, }) if err != nil { if !errors.Is(err, git.ErrRepositoryAlreadyExists) { return nil, err } gr, err = git.PlainOpen(cfg.LocalPath) if err != nil { return nil, err } repo := &Repository{ repo: gr, } _, err := repo.Update(cfg) if err != nil { return nil, err } return repo, nil } return &Repository{ repo: gr, }, nil } func (r *Repository) Update(cfg *Config) (bool, error) { log.Info("updating repository") head, err := r.repo.Head() if err != nil { return false, err } log.Info("updating from", "rev", head.Hash().String()) wt, err := r.repo.Worktree() if err != nil { return false, err } err = wt.Pull(&git.PullOptions{ SingleBranch: true, Force: true, }) if err != nil { if errors.Is(err, git.NoErrAlreadyUpToDate) { log.Info("already up-to-date") return true, nil } return false, err } head, err = r.repo.Head() if err != nil { return false, err } log.Info("updated to", "rev", head.Hash().String()) return true, r.Clean(wt) } func (r *Repository) Clean(wt *git.Worktree) error { st, err := wt.Status() if err != nil { return err } if !st.IsClean() { err = wt.Clean(&git.CleanOptions{ Dir: true, }) if err != nil { return err } } return nil }