chore: prevent downloading already existing downloaded releases

cmd/install.go

@@ -26,7 +26,7 @@ var (
 				fmt.Println("See 'tfversion install -h' for help and examples")
 				os.Exit(1)
 			}
-			installA(args[0])
+			execCmd(args[0])
 		},
 	}
 )
@@ -35,9 +35,10 @@ func init() {
 	rootCmd.AddCommand(installCmd)
 }
 
-func installA(version string) {
-	// Check if the Terraform release is already downloaded
+func execCmd(version string) {
 	isAlreadyDownloaded := download.IsAlreadyDownloaded(version)
+	//TODO: Print a message to the user that the version is already downloaded
+
 	if !isAlreadyDownloaded {
 		// Download the Terraform release
 		zipFile, err := download.Download(version, runtime.GOOS, runtime.GOARCH)

pkg/download/download.go

@@ -11,6 +11,14 @@ import (
 	"github.com/bschaatsbergen/tfversion/pkg/install"
 )
 
+// IsAlreadyDownloaded checks if the given Terraform version is already downloaded and unzipped.
+func IsAlreadyDownloaded(version string) bool {
+	downloadLocation := getDownloadLocation()
+	filePath := filepath.Join(downloadLocation, version, install.TerraformBinaryName)
+	_, err := os.Stat(filePath)
+	return !os.IsNotExist(err)
+}
+
 func getDownloadLocation() string {
 	user, err := os.UserHomeDir()
 	if err != nil {
@@ -28,13 +36,6 @@ func ensureDownloadDirectoryExists(downloadLocation string) {
 	}
 }
 
-func IsAlreadyDownloaded(version string) bool {
-	downloadLocation := getDownloadLocation()
-	filePath := filepath.Join(downloadLocation, version, install.TerraformBinaryName)
-	_, err := os.Stat(filePath)
-	return !os.IsNotExist(err)
-}
-
 // Download downloads the Terraform release zip file for the given version, OS and architecture.
 func Download(version, goos, goarch string) (string, error) {
 	downloadLocation := getDownloadLocation()