// @flow
import Router from 'koa-router';

import auth from '../middlewares/authentication';
import { NotificationSetting } from '../models';
import { presentNotificationSetting } from '../presenters';
import policy from '../policies';

const { authorize } = policy;
const router = new Router();

router.post('notificationSettings.create', auth(), async ctx => {
  const { event } = ctx.body;
  ctx.assertPresent(event, 'event is required');

  const user = ctx.state.user;
  authorize(user, 'create', NotificationSetting);

  const [setting] = await NotificationSetting.findOrCreate({
    where: {
      userId: user.id,
      teamId: user.teamId,
      event,
    },
  });

  ctx.body = {
    data: presentNotificationSetting(ctx, setting),
  };
});

router.post('notificationSettings.list', auth(), async ctx => {
  const user = ctx.state.user;
  const settings = await NotificationSetting.findAll({
    where: {
      userId: user.id,
    },
  });

  ctx.body = {
    data: settings.map(setting => presentNotificationSetting(ctx, setting)),
  };
});

router.post('notificationSettings.delete', auth(), async ctx => {
  const { id } = ctx.body;
  ctx.assertPresent(id, 'id is required');

  const user = ctx.state.user;
  const setting = await NotificationSetting.findById(id);
  authorize(user, 'delete', setting);

  await setting.destroy();

  ctx.body = {
    success: true,
  };
});

router.post('notificationSettings.unsubscribe', async ctx => {
  const { id, token } = ctx.body;
  ctx.assertPresent(id, 'id is required');
  ctx.assertPresent(token, 'token is required');

  const setting = await NotificationSetting.findById(id);
  if (setting) {
    if (token !== setting.unsubscribeToken) {
      ctx.redirect(`${process.env.URL}?notice=invalid-auth`);
    }

    await setting.destroy();
  }

  ctx.redirect(`${process.env.URL}/settings/notifications?success`);
});

export default router;