standardnotes-app-web/app/assets/javascripts/preferences/panes/account/Sync.tsx

import {
  PreferencesGroup,
  PreferencesSegment,
  Text,
  Title,
} from '@/preferences/components';
import { Button } from '@/components/Button';
import { SyncQueueStrategy } from '@node_modules/@standardnotes/snjs';
import { STRING_GENERIC_SYNC_ERROR } from '@/strings';
import { useState } from '@node_modules/preact/hooks';
import { dateToLocalizedString } from '@/utils';
import { observer } from '@node_modules/mobx-react-lite';
import { WebApplication } from '@/ui_models/application';
import { FunctionComponent } from 'preact';

type Props = {
  application: WebApplication;
};

export const formatLastSyncDate = (lastUpdatedDate: Date) => {
  return dateToLocalizedString(lastUpdatedDate);
};

export const Sync: FunctionComponent<Props> = observer(
  ({ application }: Props) => {
    const [isSyncingInProgress, setIsSyncingInProgress] = useState(false);
    const [lastSyncDate, setLastSyncDate] = useState(
      formatLastSyncDate(application.getLastSyncDate() as Date)
    );

    const doSynchronization = async () => {
      setIsSyncingInProgress(true);

      const response = await application.sync({
        queueStrategy: SyncQueueStrategy.ForceSpawnNew,
        checkIntegrity: true,
      });
      setIsSyncingInProgress(false);
      if (response && response.error) {
        application.alertService!.alert(STRING_GENERIC_SYNC_ERROR);
      } else {
        setLastSyncDate(
          formatLastSyncDate(application.getLastSyncDate() as Date)
        );
      }
    };

    return (
      <PreferencesGroup>
        <PreferencesSegment>
          <div className="flex flex-row items-center">
            <div className="flex-grow flex flex-col">
              <Title>Sync</Title>
              <Text>
                Last synced <span className="font-bold">on {lastSyncDate}</span>
              </Text>
              <Button
                className="min-w-20 mt-3"
                type="normal"
                label="Sync now"
                disabled={isSyncingInProgress}
                onClick={doSynchronization}
              />
            </div>
          </div>
        </PreferencesSegment>
      </PreferencesGroup>
    );
  }
);