fix: serve index.html for docs directory, update README with testing instructions

services/gateway/README.md

@@ -7,7 +7,7 @@ WebSocket API gateway for vehicle (TRex), HMI, and mobile app connections.
 - Authenticates WebSocket connections via JWT
 - Routes messages to Kafka topics
 - Manages connection state in Redis
-- Serves Swagger docs
+- Serves AsyncAPI docs
 
 ## Ports
 
@@ -18,37 +18,56 @@ WebSocket API gateway for vehicle (TRex), HMI, and mobile app connections.
 
 ## WebSocket Endpoints
 
-- `/ws/trex` - Vehicle connections
+| Endpoint | Purpose | User-Agent |
-- `/ws/hmi` - HMI connections  
+|----------|---------|------------|
-- `/ws/mobile` - Mobile app connections
+| `/session` | Vehicle (TRex) and HMI connections | `Fisker Ocean T.Rex x.x.x.x` or `HMI x.x.x.x` |
+| `/secret_mobile` | Mobile app connections | `Mobile x.x.x` or `iOS x.x.x` or `Android x.x.x` |
+
+## API Documentation
+
+AsyncAPI specs available at `/docs/`:
+- `/docs/asyncapi_mobile.yaml` - Mobile API
+- `/docs/asyncapi_hmi.yaml` - HMI API
+- `/docs/asyncapi_trex.yaml` - T-Rex API
+- `/docs/index.html` - Interactive UI
+
+## Testing WebSocket Connections
+
+Install websocat:
+```bash
+brew install websocat
+```
+
+Test mobile endpoint:
+```bash
+# Connect to mobile websocket
+websocat -H="User-Agent: Mobile 1.0.0" wss://gateway.mini.cloud.fiskerinc.com/secret_mobile
+
+# Send verify message (after connecting)
+{"handler":"verify","data":{"token":"<jwt_token>"}}
+```
+
+Test vehicle endpoint (requires VIN in SSL cert or header):
+```bash
+websocat -H="User-Agent: Fisker Ocean T.Rex 1.0.0.0 ABC123" \
+  -H="X-VIN: YH7DR1EA1PA000001" \
+  wss://gateway.mini.cloud.fiskerinc.com/session
+```
 
 ## Build
 
 ```bash
-# Local
+# From cloud-services root
-go build .
+docker build --platform linux/arm64 -t gateway:latest -f services/gateway/Dockerfile .
-
-# Docker
-docker build -t gateway -f Dockerfile ../..
-```
-
-## Run
-
-```bash
-# Required env vars
-export KAFKA_HOSTS=localhost:9092
-export REDIS_HOST=localhost
-export JWK_URL=https://keycloak.example.com/realms/consumer/protocol/openid-connect/certs
-
-./gateway
 ```
 
 ## Configuration
 
-See `deploy/base/configmap-common.yaml` for all options.
+See `deploy/base/config.env` for all environment variables.
 
 Key settings:
 - `KAFKA_HOSTS` - Kafka bootstrap servers
 - `REDIS_HOST/PORT` - Redis for session state
 - `JWK_URL` - JWKS endpoint for JWT validation
+- `DOCS` - Path to docs directory (default: `/docs`)
 - `LOG_LEVEL` - debug, info, warn, error

services/gateway/handlers/static.go

@@ -2,6 +2,8 @@ package handlers
 
 import (
 	"net/http"
+	"os"
+	"path"
 
 	"github.com/fiskerinc/cloud-services/pkg/utils/envtool"
 )
@@ -12,6 +14,23 @@ func DocsHandler() http.Handler {
 	if fp == "" {
 		return nil
 	}
-	fs := http.FileServer(http.Dir(fp))
+
-	return fs
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// Get the requested path
+		reqPath := r.URL.Path
+		if reqPath == "" || reqPath == "/" {
+			reqPath = "/index.html"
+		}
+
+		// Build full file path
+		fullPath := path.Join(fp, reqPath)
+
+		// Check if it's a directory, serve index.html
+		info, err := os.Stat(fullPath)
+		if err == nil && info.IsDir() {
+			fullPath = path.Join(fullPath, "index.html")
+		}
+
+		http.ServeFile(w, r, fullPath)
+	})
 }