fix: prompt login in red when bitwarden session is missing

scaffold/scaffold.go

@@ -1596,6 +1596,11 @@ type Runtime struct {
 	SecretName         string
 }
 
+const (
+	ansiRedColor   = "\033[31m"
+	ansiResetColor = "\033[0m"
+)
+
 func Run(ctx context.Context, args []string, version string) error {
 	runtime, err := NewRuntime(version)
 	if err != nil {
@@ -1917,9 +1922,7 @@ func (r Runtime) runUpdate(ctx context.Context, inv bootstrap.Invocation) error
 func (r Runtime) openSecretStore() (secretstore.Store, error) {
 	policy := r.activeBackendPolicy()
 	if policy == secretstore.BackendBitwardenCLI {
-		if _, err := secretstore.EnsureBitwardenSessionEnv(secretstore.BitwardenSessionOptions{
-			ServiceName: r.BinaryName,
-		}); err != nil {
+		if err := r.ensureBitwardenSession(); err != nil {
 			return nil, err
 		}
 	}
@@ -1936,6 +1939,37 @@ func (r Runtime) openSecretStore() (secretstore.Store, error) {
 	})
 }
 
+func (r Runtime) ensureBitwardenSession() error {
+	if hasBitwardenSessionInEnv() {
+		return nil
+	}
+
+	loaded, err := secretstore.EnsureBitwardenSessionEnv(secretstore.BitwardenSessionOptions{
+		ServiceName: r.BinaryName,
+	})
+	if err != nil {
+		return err
+	}
+
+	if loaded || hasBitwardenSessionInEnv() {
+		return nil
+	}
+
+	return errors.New(colorizeRed(fmt.Sprintf(
+		"Session Bitwarden introuvable. Lance %s login puis relance la commande.",
+		r.BinaryName,
+	)))
+}
+
+func hasBitwardenSessionInEnv() bool {
+	session, ok := os.LookupEnv("BW_SESSION")
+	return ok && strings.TrimSpace(session) != ""
+}
+
+func colorizeRed(message string) string {
+	return ansiRedColor + strings.TrimSpace(message) + ansiResetColor
+}
+
 func (r Runtime) activeBackendPolicy() secretstore.BackendPolicy {
 	policy := secretstore.BackendPolicy(strings.TrimSpace(r.Manifest.SecretStore.BackendPolicy))
 	if policy == "" {

scaffold/scaffold_test.go

@@ -68,6 +68,8 @@ func TestGenerateCreatesRecommendedSkeleton(t *testing.T) {
 		"config.NewStore[Profile]",
 		"secretstore.Open(secretstore.Options",
 		"secretstore.EnsureBitwardenSessionEnv",
+		"func (r Runtime) ensureBitwardenSession() error {",
+		"\\033[31m",
 		"secretstore.LoginBitwarden",
 		"update.Run",
 		"manifest.LoadDefaultOrEmbedded",