Refactor github reporer to use common comments code

cmd/pint/ci.go

@@ -171,7 +171,7 @@ func actionCI(c *cli.Context) error {
 		); err != nil {
 			return err
 		}
-		reps = append(reps, gl)
+		reps = append(reps, reporter.NewCommentReporter(gl))
 	}
 
 	meta.cfg.Repository = detectRepository(meta.cfg.Repository)
@@ -191,6 +191,12 @@ func actionCI(c *cli.Context) error {
 			return fmt.Errorf("got not a valid number via GITHUB_PULL_REQUEST_NUMBER: %w", err)
 		}
 
+		var headCommit string
+		headCommit, err = git.HeadCommit(git.RunGit)
+		if err != nil {
+			return errors.New("failed to get the HEAD commit")
+		}
+
 		timeout, _ := time.ParseDuration(meta.cfg.Repository.GitHub.Timeout)
 		var gr reporter.GithubReporter
 		if gr, err = reporter.NewGithubReporter(
@@ -203,11 +209,11 @@ func actionCI(c *cli.Context) error {
 			meta.cfg.Repository.GitHub.Repo,
 			prNum,
 			meta.cfg.Repository.GitHub.MaxComments,
-			git.RunGit,
+			headCommit,
 		); err != nil {
 			return err
 		}
-		reps = append(reps, gr)
+		reps = append(reps, reporter.NewCommentReporter(gr))
 	}
 
 	minSeverity, err := checks.ParseSeverity(c.String(failOnFlag))

internal/reporter/comments.go

@@ -33,6 +33,18 @@ type Commenter interface {
 	IsEqual(ExistingCommentV2, PendingCommentV2) bool
 }
 
+func NewCommentReporter(c Commenter) CommentReporter {
+	return CommentReporter{c: c}
+}
+
+type CommentReporter struct {
+	c Commenter
+}
+
+func (cr CommentReporter) Submit(summary Summary) (err error) {
+	return Submit(context.Background(), summary, cr.c)
+}
+
 func makeComments(summary Summary) (comments []PendingCommentV2) {
 	var buf strings.Builder
 	for _, reports := range dedupReports(summary.reports) {
@@ -155,3 +167,16 @@ func problemIcon(s checks.Severity) string {
 		return ":stop_sign:"
 	}
 }
+
+func errsToComment(errs []error) string {
+	var buf strings.Builder
+	buf.WriteString("There were some errors when pint was trying to create a report.\n")
+	buf.WriteString("Some review comments might be outdated or missing.\n")
+	buf.WriteString("List of all errors:\n\n")
+	for _, err := range errs {
+		buf.WriteString("- `")
+		buf.WriteString(err.Error())
+		buf.WriteString("`\n")
+	}
+	return buf.String()
+}