WIP: operator collaboration MVP

See toolshed/organising#467

pkg/git/pull.go

@@ -0,0 +1,41 @@
+package git
+
+import (
+	"errors"
+
+	"coopcloud.tech/abra/pkg/log"
+	"github.com/go-git/go-git/v5"
+)
+
+// Pull pulls the latest changes in.
+func Pull(repoDir string, dryRun bool) error {
+	if dryRun {
+		log.Debugf("dry run: no git changes pulled in %s", repoDir)
+		return nil
+	}
+
+	repo, err := git.PlainOpen(repoDir)
+	if err != nil {
+		return err
+	}
+
+	opts := &git.PullOptions{
+		RemoteName: "origin", // NOTE(d1): what could go wrong 🤡
+	}
+
+	worktree, err := repo.Worktree()
+	if err != nil {
+		return err
+	}
+
+	if err := worktree.Pull(opts); err != nil && !errors.Is(err, git.NoErrAlreadyUpToDate) {
+		return err
+	} else if err != nil && errors.Is(err, git.NoErrAlreadyUpToDate) {
+		log.Debugf("skipping pulling changes at %s", repoDir)
+		return nil
+	}
+
+	log.Debugf("git changes pulled in at %s", repoDir)
+
+	return nil
+}