feat: .env file support — skip prompts on repeat deploys

- /opt/fw/.env stores token, cloud, node, port, upstream
- If .env exists with WALLARM_TOKEN, all prompts are skipped
- Saved automatically after successful deployment
- Perfect for testing: edit .env once, deploy repeatedly

cmd/deploy/main.go

@@ -37,6 +37,23 @@ func runDeployFlow(r preflight.Result) {
 	var s state.State
 	s.DeploymentType = "native"
 
+	// Check for .env file — skip prompts if present
+	envPath := "/opt/fw/.env"
+	envData, _ := os.ReadFile(envPath)
+	envMap := parseEnv(string(envData))
+	skipPrompts := envMap["WALLARM_TOKEN"] != ""
+
+	if skipPrompts {
+		fmt.Println()
+		fmt.Println("Using saved configuration from /opt/fw/.env")
+		s.CloudRegion = envMap["WALLARM_CLOUD"]
+		if s.CloudRegion == "US" {
+			s.APIHost = "us1.api.wallarm.com"
+		} else {
+			s.APIHost = "api.wallarm.com"
+		}
+		s.APIToken = envMap["WALLARM_TOKEN"]
+	} else {
 		// Step 1: Cloud region
 		fmt.Println()
 		fmt.Println("─── Cloud Region ───")
@@ -72,11 +89,22 @@ func runDeployFlow(r preflight.Result) {
 			fmt.Println("Token cannot be empty.")
 			return
 		}
+	}
 
 	// Step 3: Node configuration
+	var nodeName, port, upstreamIP, upstreamPort, labels string
+	if skipPrompts {
+		nodeName = envMap["WALLARM_NODE"]
+		port = envMap["WALLARM_PORT"]
+		upstreamIP = envMap["WALLARM_UPSTREAM_IP"]
+		upstreamPort = envMap["WALLARM_UPSTREAM_PORT"]
+		labels = envMap["WALLARM_LABELS"]
+		fmt.Printf("\n  Node: %s | Port: %s | Upstream: %s:%s | Cloud: %s\n",
+			nodeName, port, upstreamIP, upstreamPort, s.CloudRegion)
+	} else {
 		fmt.Println()
 		fmt.Print("Node name: ")
-	nodeName, _ := reader.ReadString('\n')
+		nodeName, _ = reader.ReadString('\n')
 		nodeName = strings.TrimSpace(nodeName)
 		if nodeName == "" {
 			fmt.Println("Node name required.")
@@ -84,29 +112,28 @@ func runDeployFlow(r preflight.Result) {
 		}
 
 		fmt.Print("Listen port [8081]: ")
-	port, _ := reader.ReadString('\n')
+		port, _ = reader.ReadString('\n')
 		port = strings.TrimSpace(port)
 		if port == "" {
 			port = "8081"
 		}
-	address := "0.0.0.0:" + port
 
 		fmt.Print("Upstream IP [127.0.0.1]: ")
-	upstreamIP, _ := reader.ReadString('\n')
+		upstreamIP, _ = reader.ReadString('\n')
 		upstreamIP = strings.TrimSpace(upstreamIP)
 		if upstreamIP == "" {
 			upstreamIP = "127.0.0.1"
 		}
 
 		fmt.Print("Upstream port [80]: ")
-	upstreamPort, _ := reader.ReadString('\n')
+		upstreamPort, _ = reader.ReadString('\n')
 		upstreamPort = strings.TrimSpace(upstreamPort)
 		if upstreamPort == "" {
 			upstreamPort = "80"
 		}
 
 		fmt.Print("Labels [group=" + nodeName + "]: ")
-	labels, _ := reader.ReadString('\n')
+		labels, _ = reader.ReadString('\n')
 		labels = strings.TrimSpace(labels)
 		if labels == "" {
 			labels = "group=" + nodeName
@@ -114,7 +141,7 @@ func runDeployFlow(r preflight.Result) {
 
 		fmt.Println()
 		fmt.Printf("  Node:       %s\n", nodeName)
-	fmt.Printf("  Listen:     %s\n", address)
+		fmt.Printf("  Listen:     %s\n", "0.0.0.0:"+port)
 		fmt.Printf("  Upstream:   %s:%s\n", upstreamIP, upstreamPort)
 		fmt.Printf("  Region:     %s (%s)\n", s.CloudRegion, s.APIHost)
 		fmt.Print("\nProceed with deployment? [Y/n]: ")
@@ -124,6 +151,13 @@ func runDeployFlow(r preflight.Result) {
 			fmt.Println("Cancelled.")
 			return
 		}
+	}
+
+	if port == "" { port = "8081" }
+	if upstreamIP == "" { upstreamIP = "127.0.0.1" }
+	if upstreamPort == "" { upstreamPort = "80" }
+	if labels == "" { labels = "group=" + nodeName }
+	address := "0.0.0.0:" + port
 
 	baseDir := "/opt/fw"
 	instanceDir := baseDir + "/" + nodeName + "/wallarm"
@@ -178,6 +212,11 @@ WALLARM_REGION=%s
 		fmt.Fprintf(os.Stderr, "Warning: could not save state: %v\n", err)
 	}
 
+	// Save .env for future runs
+	os.WriteFile(envPath, []byte(fmt.Sprintf(
+		"WALLARM_TOKEN=%s\nWALLARM_CLOUD=%s\nWALLARM_NODE=%s\nWALLARM_PORT=%s\nWALLARM_UPSTREAM_IP=%s\nWALLARM_UPSTREAM_PORT=%s\nWALLARM_LABELS=%s\n",
+		s.APIToken, s.CloudRegion, nodeName, port, upstreamIP, upstreamPort, labels)), 0644)
+
 	fmt.Println()
 	fmt.Println("✅ Deployment complete!")
 	fmt.Println()
@@ -334,3 +373,18 @@ deployment.  On subsequent runs, it shows your existing deployments.
 		}
 	}
 }
+
+func parseEnv(data string) map[string]string {
+	m := map[string]string{}
+	for _, line := range strings.Split(data, "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) == 2 {
+			m[strings.TrimSpace(parts[0])] = strings.TrimSpace(parts[1])
+		}
+	}
+	return m
+}