gahew

server/src/services/modeManager/index.js

@@ -0,0 +1,78 @@
+// mode Manager
+// Purpose: Defines the mode Manager module and the helpers/state used by this service unit.
+// Scope: Keeps runtime behavior unchanged while isolating responsibilities into a clear module boundary.
+const EventEmitter = require('events');
+const io = require('../../globals/io');
+const { sendAlert } = require('../alertService');
+const ALERT_COLOR = '#ff9800';
+const { isAdmin, isLockdownAdmin } = require('../roleService');
+const { publishEvent } = require('../eventBus');
+
+const MODES = {
+  OPEN: 'open',
+  TURNS: 'turns',
+  ADMIN: 'admin',
+  LOCKDOWN: 'lockdown',
+};
+
+let currentMode = MODES.ADMIN;
+const modeEvents = new EventEmitter();
+
+function canChangeMode(socket, nextMode) {
+  if (currentMode === MODES.LOCKDOWN && nextMode !== MODES.LOCKDOWN) {
+    return isLockdownAdmin(socket);
+  }
+  if (nextMode === MODES.LOCKDOWN) {
+    return isAdmin(socket);
+  }
+  return isAdmin(socket);
+}
+
+function setMode(nextMode, socket, options = {}) {
+  if (!Object.values(MODES).includes(nextMode)) {
+    throw new Error(`Unknown mode ${nextMode}`);
+  }
+  const force = Boolean(options.force);
+  if (!force && !canChangeMode(socket, nextMode)) {
+    throw new Error('Not authorized to change mode');
+  }
+  if (currentMode === nextMode) {
+    return currentMode;
+  }
+  currentMode = nextMode;
+  sendAlert({
+    color: ALERT_COLOR,
+    title: 'Mode Changed',
+    message: `Server mode set to ${nextMode}`,
+  });
+  publishEvent({
+    source: 'modeManager',
+    type: 'mode.changed',
+    payload: { mode: currentMode, by: socket?.data?.user?.username || null },
+  });
+  modeEvents.emit('change', currentMode);
+  io.emit('mode', { mode: currentMode });
+  return currentMode;
+}
+
+function getMode() {
+  return currentMode;
+}
+
+module.exports = {
+  MODES,
+  getMode,
+  setMode,
+  modeEvents,
+};
+
+io.on('connection', (socket) => {
+  socket.emit('mode', { mode: currentMode });
+  socket.on('setMode', ({ mode }) => {
+    try {
+      setMode(mode, socket);
+    } catch (err) {
+      sendAlert({ color: ALERT_COLOR, title: 'Mode change failed', message: err.message });
+    }
+  });
+});