TGUI 4.3

tgui/packages/tgui-panel/game/middleware.js

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+/**
+ * @file
+ * @copyright 2020 Aleksej Komarov
+ * @license MIT
+ */
+
+import { pingSuccess } from '../ping/actions';
+import { connectionLost, connectionRestored, roundRestarted } from './actions';
+import { selectGame } from './selectors';
+import { CONNECTION_LOST_AFTER } from './constants';
+
+const withTimestamp = action => ({
+  ...action,
+  meta: {
+    ...action.meta,
+    now: Date.now(),
+  },
+});
+
+export const gameMiddleware = store => {
+  let lastPingedAt;
+  setInterval(() => {
+    const state = store.getState();
+    if (!state) {
+      return;
+    }
+    const game = selectGame(state);
+    const pingsAreFailing = lastPingedAt
+      && Date.now() >= lastPingedAt + CONNECTION_LOST_AFTER;
+    if (!game.connectionLostAt && pingsAreFailing) {
+      store.dispatch(withTimestamp(connectionLost()));
+    }
+    if (game.connectionLostAt && !pingsAreFailing) {
+      store.dispatch(withTimestamp(connectionRestored()));
+    }
+  }, 1000);
+  return next => action => {
+    const { type, payload, meta } = action;
+    if (type === pingSuccess.type) {
+      lastPingedAt = meta.now;
+      return next(action);
+    }
+    if (type === roundRestarted.type) {
+      return next(withTimestamp(action));
+    }
+    return next(action);
+  };
+};