// Copyright 2024 The Lynx Authors. All rights reserved.
// Licensed under the Apache License Version 2.0 that can be found in the
// LICENSE file in the root directory of this source tree.
import { render } from 'preact';

import { __root } from '../../root.js';
import { delayedEvents } from './event/delayEvents.js';
import { delayedLifecycleEvents } from './event/delayLifecycleEvents.js';
import { globalCommitTaskMap } from './patch/commit.js';
import { deinitGlobalSnapshotPatch } from './patch/snapshotPatch.js';
import { profileEnd, profileStart } from '../../shared/profile.js';
import { withSyncEffectFlush } from '../../utils.js';
import { resetSnapshotMainThreadFunctionRuntime } from '../worklet/call/runOnMainThread.js';
import { resetSnapshotBackgroundFunctionRuntime } from '../worklet/ctx.js';

function destroyBackground(): void {
  if (typeof __PROFILE__ !== 'undefined' && __PROFILE__) {
    profileStart('ReactLynx::destroyBackground');
  }

  deinitGlobalSnapshotPatch();

  withSyncEffectFlush(() => {
    // eslint-disable-next-line @typescript-eslint/no-unsafe-argument
    render(null, __root as any);
  });

  globalCommitTaskMap.forEach(task => {
    task();
  });
  globalCommitTaskMap.clear();
  // Clear delayed events which should not be executed after destroyed.
  // This is important when the page is performing a reload.
  delayedLifecycleEvents.length = 0;
  if (delayedEvents) {
    delayedEvents.length = 0;
  }
  resetSnapshotBackgroundFunctionRuntime();
  resetSnapshotMainThreadFunctionRuntime();
  if (typeof __PROFILE__ !== 'undefined' && __PROFILE__) {
    profileEnd();
  }
}

export { destroyBackground };