feat: prepare for other git services

cmd/gogitlabber/git.go

@@ -6,6 +6,58 @@ import (
 	"strings"
 )
 
+func checkoutRepositories(repositories []Repository) {
+
+	for _, repo := range repositories {
+
+		// create clone
+		repoName := string(repo.PathWithNamespace)
+    url := getGitlabURL(gitlabToken, gitlabHost, repoName)
+
+		// create repository destination
+		repoDestination := repoDestinationPre + repoName
+
+		// create and update bar description
+		descriptionPrefixPre := "Cloning repository "
+		descriptionPrefix := descriptionPrefixPre + repoName + " ..."
+		bar.Describe(descriptionPrefix)
+
+		// clone the repo
+		cloneOutput, err := cloneRepository(repoDestination, url)
+
+		if err != nil {
+
+			// if repo already exists, try to pull the latest changes
+			if strings.Contains(string(cloneOutput),
+				"already exists and is not an empty directory") {
+
+				descriptionPrefixPre := "Pulling repository "
+				descriptionPrefix := descriptionPrefixPre + repoName + " ..."
+				bar.Describe(descriptionPrefix)
+
+				_, err := pullRepositories(repoDestination)
+				if err != nil {
+					continue
+				}
+
+				pulledCount = pulledCount + 1
+				continue
+			}
+
+			// in case cloning failed and the directory does not exist
+			// print the clone error and continue
+			log.Printf("\n❌ error cloning %s: %v\n%s\n", repoName, err, cloneOutput)
+			errorCount = errorCount + 1
+			bar.Add(1)
+			continue
+		}
+
+		// finish the clone
+		clonedCount = clonedCount + 1
+		bar.Add(1)
+	}
+}
+
 func cloneRepository(repoDestination string, gitlabUrl string) (string, error) {
 
 	cloneCmd := exec.Command("git", "clone", gitlabUrl, repoDestination)