standardnotes-app-web/app/assets/javascripts/components/ConfirmSignoutModal.tsx

import { useEffect, useRef, useState } from 'preact/hooks';
import {
  AlertDialog,
  AlertDialogDescription,
  AlertDialogLabel,
} from '@reach/alert-dialog';
import { STRING_SIGN_OUT_CONFIRMATION } from '@/strings';
import { WebApplication } from '@/ui_models/application';
import { AppState } from '@/ui_models/app_state';
import { observer } from 'mobx-react-lite';

type Props = {
  application: WebApplication;
  appState: AppState;
};

export const ConfirmSignoutContainer = observer((props: Props) => {
  if (!props.appState.accountMenu.signingOut) {
    return null;
  }
  return <ConfirmSignoutModal {...props} />;
});

export const ConfirmSignoutModal = observer(
  ({ application, appState }: Props) => {
    const [deleteLocalBackups, setDeleteLocalBackups] = useState(false);

    const cancelRef = useRef<HTMLButtonElement>(null);
    function closeDialog() {
      appState.accountMenu.setSigningOut(false);
    }

    const [localBackupsCount, setLocalBackupsCount] = useState(0);

    useEffect(() => {
      application.bridge.localBackupsCount().then(setLocalBackupsCount);
    }, [appState.accountMenu.signingOut, application.bridge]);

    return (
      <AlertDialog onDismiss={closeDialog} leastDestructiveRef={cancelRef}>
        <div className="sk-modal-content">
          <div className="sn-component">
            <div className="sk-panel">
              <div className="sk-panel-content">
                <div className="sk-panel-section">
                  <AlertDialogLabel className="sk-h3 sk-panel-section-title capitalize">
                    End your session?
                  </AlertDialogLabel>
                  <AlertDialogDescription className="sk-panel-row">
                    <p className="color-foreground">
                      {STRING_SIGN_OUT_CONFIRMATION}
                    </p>
                  </AlertDialogDescription>
                  {localBackupsCount > 0 && (
                    <div className="flex">
                      <div className="sk-panel-row"></div>
                      <label className="flex items-center">
                        <input
                          type="checkbox"
                          checked={deleteLocalBackups}
                          onChange={(event) => {
                            setDeleteLocalBackups(
                              (event.target as HTMLInputElement).checked
                            );
                          }}
                        />
                        <span className="ml-2">
                          Delete {localBackupsCount} local backup file
                          {localBackupsCount > 1 ? 's' : ''}
                        </span>
                      </label>
                      <button
                        className="capitalize sk-a ml-1.5 p-0 rounded cursor-pointer"
                        onClick={() => {
                          application.bridge.viewlocalBackups();
                        }}
                      >
                        View backup files
                      </button>
                    </div>
                  )}
                  <div className="flex my-1 mt-4">
                    <button
                      className="sn-button small neutral"
                      ref={cancelRef}
                      onClick={closeDialog}
                    >
                      Cancel
                    </button>
                    <button
                      className="sn-button small danger ml-2"
                      onClick={() => {
                        if (deleteLocalBackups) {
                          application.signOutAndDeleteLocalBackups();
                        } else {
                          application.signOut();
                        }
                        closeDialog();
                      }}
                    >
                      {application.hasAccount()
                        ? 'Sign Out'
                        : 'Clear Session Data'}
                    </button>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </AlertDialog>
    );
  }
);