Function getCommitFileStats

git/api/commit.go:238–280

(
	ctx context.Context,
	repoPath string,
	sha sha.SHA,
)

}

func getCommitFileStats(
	ctx context.Context,
	repoPath string,
	sha sha.SHA,
) ([]CommitFileStats, error) {
	g, ctx := errgroup.WithContext(ctx)
	var changeInfoChanges map[string]changeInfoChange
	var changeInfoTypes map[string]changeInfoType

	g.Go(func() error {
		var err error
		changeInfoChanges, err = getChangeInfoChanges(ctx, repoPath, sha)
		return err
	})

	g.Go(func() error {
		var err error
		changeInfoTypes, err = getChangeInfoTypes(ctx, repoPath, sha)
		return err
	})

	if err := g.Wait(); err != nil {
		return nil, fmt.Errorf("failed to get change infos: %w", err)
	}

	if len(changeInfoTypes) == 0 {
		return []CommitFileStats{}, nil
	}

	fileStats := make([]CommitFileStats, len(changeInfoChanges))
	i := 0
	for path, info := range changeInfoChanges {
		fileStats[i] = CommitFileStats{
			Path:       changeInfoTypes[path].Path,
			OldPath:    changeInfoTypes[path].OldPath,
			ChangeType: changeInfoTypes[path].Status,
			Insertions: info.Insertions,
			Deletions:  info.Deletions,
		}
		i++
	}
	return fileStats, nil
}

// In case of rename of a file, same commit will be listed twice - Once in old file and second time in new file.
// Hence, we are making it a pattern to only list it as part of new file and not as part of old file.