fix: improved offline support

Closes coop-cloud/organising#471.

pkg/catalogue/catalogue.go

@@ -8,6 +8,7 @@ import (
 
 	"coopcloud.tech/abra/pkg/config"
 	gitPkg "coopcloud.tech/abra/pkg/git"
+	"coopcloud.tech/abra/pkg/runtime"
 	"github.com/go-git/go-git/v5"
 	"github.com/sirupsen/logrus"
 )
@@ -52,9 +53,13 @@ var CatalogueSkipList = map[string]bool{
 }
 
 // EnsureCatalogue ensures that the catalogue is cloned locally & present.
-func EnsureCatalogue() error {
+func EnsureCatalogue(conf *runtime.Config) error {
 	catalogueDir := path.Join(config.ABRA_DIR, "catalogue")
 	if _, err := os.Stat(catalogueDir); err != nil && os.IsNotExist(err) {
+		if conf.Offline {
+			return fmt.Errorf("no local copy of the catalogue available, network access required")
+		}
+
 		url := fmt.Sprintf("%s/%s.git", config.REPOS_BASE_URL, config.CATALOGUE_JSON_REPO_NAME)
 		if err := gitPkg.Clone(catalogueDir, url); err != nil {
 			return err
@@ -68,7 +73,7 @@ func EnsureCatalogue() error {
 
 // EnsureUpToDate ensures that the local catalogue has no unstaged changes as
 // is up to date. This is useful to run before doing catalogue generation.
-func EnsureUpToDate() error {
+func EnsureUpToDate(conf *runtime.Config) error {
 	isClean, err := gitPkg.IsClean(config.CATALOGUE_DIR)
 	if err != nil {
 		return err
@@ -79,6 +84,11 @@ func EnsureUpToDate() error {
 		return fmt.Errorf(msg, config.CATALOGUE_DIR)
 	}
 
+	if conf.Offline {
+		logrus.Debug("attempting to use local catalogue without access network (\"--offline\")")
+		return nil
+	}
+
 	repo, err := git.PlainOpen(config.CATALOGUE_DIR)
 	if err != nil {
 		return err