snapshot of https://github.com/jitsi/jitsi-meet.git @ fd1749dd28f4138aa80234fc7f311b19aaffa0e7 (2026-09-15)

react/features/speaker-stats/middleware.ts

@@ -0,0 +1,101 @@
+import { batch } from 'react-redux';
+import { AnyAction } from 'redux';
+
+import { IStore } from '../app/types';
+import {
+    PARTICIPANT_JOINED,
+    PARTICIPANT_KICKED,
+    PARTICIPANT_LEFT,
+    PARTICIPANT_UPDATED
+} from '../base/participants/actionTypes';
+import MiddlewareRegistry from '../base/redux/MiddlewareRegistry';
+
+import {
+    ADD_TO_OFFSET,
+    INIT_SEARCH,
+    INIT_UPDATE_STATS,
+    RESET_SEARCH_CRITERIA
+} from './actionTypes';
+import {
+    clearTimelineBoundary,
+    initReorderStats,
+    setTimelineBoundary,
+    updateSortedSpeakerStatsIds,
+    updateStats
+} from './actions.any';
+import { CLEAR_TIME_BOUNDARY_THRESHOLD } from './constants';
+import {
+    filterBySearchCriteria,
+    getCurrentDuration,
+    getPendingReorder,
+    getSortedSpeakerStatsIds,
+    getTimelineBoundaries,
+    resetHiddenStats
+} from './functions';
+
+MiddlewareRegistry.register(({ dispatch, getState }: IStore) => (next: Function) => (action: AnyAction) => {
+    switch (action.type) {
+    case INIT_SEARCH: {
+        const state = getState();
+        const stats = filterBySearchCriteria(state);
+
+        dispatch(updateStats(stats));
+        break;
+    }
+
+    case INIT_UPDATE_STATS:
+        if (action.getSpeakerStats) {
+            const state = getState();
+            const speakerStats = { ...action.getSpeakerStats() };
+            const stats = filterBySearchCriteria(state, speakerStats);
+            const pendingReorder = getPendingReorder(state);
+
+            batch(() => {
+                if (pendingReorder) {
+                    dispatch(updateSortedSpeakerStatsIds(getSortedSpeakerStatsIds(state, stats) ?? []));
+                }
+
+                dispatch(updateStats(stats));
+            });
+
+        }
+
+        break;
+
+    case RESET_SEARCH_CRITERIA: {
+        const state = getState();
+        const stats = resetHiddenStats(state);
+
+        dispatch(updateStats(stats));
+        break;
+    }
+    case PARTICIPANT_JOINED:
+    case PARTICIPANT_LEFT:
+    case PARTICIPANT_KICKED:
+    case PARTICIPANT_UPDATED: {
+        const { pendingReorder } = getState()['features/speaker-stats'];
+
+        if (!pendingReorder) {
+            dispatch(initReorderStats());
+        }
+        break;
+    }
+
+    case ADD_TO_OFFSET: {
+        const state = getState();
+        const { timelineBoundary } = state['features/speaker-stats'];
+        const { right } = getTimelineBoundaries(state);
+        const currentDuration = getCurrentDuration(state) ?? 0;
+
+        if (Math.abs((right + action.value) - currentDuration) < CLEAR_TIME_BOUNDARY_THRESHOLD) {
+            dispatch(clearTimelineBoundary());
+        } else if (!timelineBoundary) {
+            dispatch(setTimelineBoundary(currentDuration ?? 0));
+        }
+
+        break;
+    }
+    }
+
+    return next(action);
+});