feat(firmware): add OCPP schema and constants for charge point management

apps/csms/src/index.ts

@@ -7,6 +7,11 @@ import { cors } from 'hono/cors'
 import { logger } from 'hono/logger'
 import { showRoutes } from 'hono/dev'
 import { auth } from './lib/auth.ts'
+import {
+  isSupportedOCPP,
+  SUPPORTED_OCPP_VERSIONS,
+  type SupportedOCPPVersion,
+} from './constants.ts'
 
 const app = new Hono<{
   Variables: {
@@ -45,7 +50,7 @@ app.use(
 
 app.on(['POST', 'GET'], '/api/auth/*', (c) => auth.handler(c.req.raw))
 
-app.get('/', (c) => {
+app.get('/api', (c) => {
   const user = c.get('user')
   const session = c.get('session')
 
@@ -66,13 +71,21 @@ app.get('/', (c) => {
 })
 
 app.get(
-  '/ocpp',
+  '/ocpp/:chargePointId',
   upgradeWebSocket((c) => {
+    const chargePointId = c.req.param('chargePointId')
+
     return {
       onOpen(evt, ws) {
+        const subProtocol = ws.protocol || 'unknown'
+        if (!isSupportedOCPP(subProtocol)) {
+          ws.close(1002, 'Unsupported subprotocol')
+          return
+        }
+
         const connInfo = getConnInfo(c)
         console.log(
-          `New connection from ${connInfo.remote.address}:${connInfo.remote.port}`,
+          `New connection from ${connInfo.remote.address}:${connInfo.remote.port} for station ${chargePointId}`,
         )
       },
       onMessage(evt, ws) {