feat: recipe fetch command

Also may have rooted out another go-git cloning bug 🙄

Closes coop-cloud/organising#365

pkg/recipe/recipe.go

@@ -17,6 +17,7 @@ import (
 	"coopcloud.tech/abra/pkg/config"
 	"coopcloud.tech/abra/pkg/formatter"
 	gitPkg "coopcloud.tech/abra/pkg/git"
+	"coopcloud.tech/abra/pkg/limit"
 	"coopcloud.tech/abra/pkg/upstream/stack"
 	loader "coopcloud.tech/abra/pkg/upstream/stack"
 	"coopcloud.tech/abra/pkg/web"
@@ -1011,3 +1012,63 @@ func GetRecipeCatalogueVersions(recipeName string, catl RecipeCatalogue) ([]stri
 
 	return versions, nil
 }
+
+// UpdateRepositories clones and updates all recipe repositories locally.
+func UpdateRepositories(repos RepoCatalogue, recipeName string) error {
+	var barLength int
+	if recipeName != "" {
+		barLength = 1
+	} else {
+		barLength = len(repos)
+	}
+
+	cloneLimiter := limit.New(10)
+
+	retrieveBar := formatter.CreateProgressbar(barLength, "ensuring recipes are cloned & up-to-date...")
+	ch := make(chan string, barLength)
+	for _, repoMeta := range repos {
+		go func(rm RepoMeta) {
+			cloneLimiter.Begin()
+			defer cloneLimiter.End()
+
+			if recipeName != "" && recipeName != rm.Name {
+				ch <- rm.Name
+				retrieveBar.Add(1)
+				return
+			}
+			if _, exists := catalogue.CatalogueSkipList[rm.Name]; exists {
+				ch <- rm.Name
+				retrieveBar.Add(1)
+				return
+			}
+
+			recipeDir := path.Join(config.RECIPES_DIR, rm.Name)
+
+			if err := gitPkg.Clone(recipeDir, rm.CloneURL); err != nil {
+				logrus.Fatal(err)
+			}
+
+			isClean, err := gitPkg.IsClean(recipeDir)
+			if err != nil {
+				logrus.Fatal(err)
+			}
+
+			if !isClean {
+				logrus.Fatalf("%s has locally unstaged changes", rm.Name)
+			}
+
+			if err := EnsureUpToDate(rm.Name); err != nil {
+				logrus.Fatal(err)
+			}
+
+			ch <- rm.Name
+			retrieveBar.Add(1)
+		}(repoMeta)
+	}
+
+	for range repos {
+		<-ch // wait for everything
+	}
+
+	return nil
+}