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server/src/services/roomCameraService.js

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+const EventEmitter = require('events');
+const logger = require('../globals/logger').child('roomCameraService');
+const { loadConfig } = require('../helpers/configLoader');
+
+const events = new EventEmitter();
+const config = loadConfig();
+
+const cameraMap = new Map();
+
+function normalizeCamera(camera) {
+  if (!camera) return null;
+  const id = camera.id || camera.name;
+  if (!id) {
+    logger.warn('Room camera missing id', camera);
+    return null;
+  }
+  return {
+    id: String(id),
+    name: camera.name || camera.id || String(id),
+    description: camera.description || null,
+  };
+}
+
+function loadFromConfig() {
+  cameraMap.clear();
+  const list = Array.isArray(config.roomCameras) ? config.roomCameras : [];
+  list.forEach((camera) => {
+    const normalized = normalizeCamera(camera);
+    if (normalized) {
+      cameraMap.set(normalized.id, normalized);
+    }
+  });
+  logger.info('Loaded room cameras', { count: cameraMap.size });
+  events.emit('update', getRoomCameras());
+}
+
+function getRoomCameras() {
+  return Array.from(cameraMap.values());
+}
+
+function getRoomCamera(id) {
+  if (!id) return null;
+  return cameraMap.get(String(id)) || null;
+}
+
+loadFromConfig();
+
+module.exports = {
+  getRoomCameras,
+  getRoomCamera,
+  roomCameraEvents: events,
+};