bookbrainz/bookbrainz-site

/*
 * Copyright (C) 2020 Prabal Singh
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

import * as propHelpers from '../../client/helpers/props';
import {escapeProps, generateProps} from '../helpers/props';
import Layout from '../../client/containers/layout';
import React from 'react';
import ReactDOMServer from 'react-dom/server';
import RevisionsPage from '../../client/components/pages/revisions';
import express from 'express';
import {getNextEnabledAndResultsArray} from '../../common/helpers/utils';
import {getOrderedRevisions} from '../helpers/revisions';
import target from '../templates/target';


const router = express.Router();

/* GET revisions page. */
router.get('/', async (req, res, next) => {
    const {orm} = req.app.locals;
    const size = req.query.size ? parseInt(req.query.size, 10) : 20;
    const from = req.query.from ? parseInt(req.query.from, 10) : 0;

    function render(results, nextEnabled) {
        const props = generateProps(req, res, {
            from,
            nextEnabled,
            results,
            showRevisionEditor: true,
            size
        });

        /*
         * Renders react components server side and injects markup into target
         * file object spread injects the app.locals variables into React as
         * props
         */
        const markup = ReactDOMServer.renderToString(
            <Layout {...propHelpers.extractLayoutProps(props)}>
                <RevisionsPage {...propHelpers.extractChildProps(props)}/>
            </Layout>
        );

        res.send(target({
            markup,
            props: escapeProps(props),
            script: '/js/revisions.js',
            title: 'Revisions'
        }));
    }

    try {
        // fetch 1 more revision than required to check nextEnabled
        const orderedRevisions = await getOrderedRevisions(from, size + 1, orm);
        const {newResultsArray, nextEnabled} = getNextEnabledAndResultsArray(orderedRevisions, size);
        return render(newResultsArray, nextEnabled);
    }
    catch (err) {
        return next(err);
    }
});


// eslint-disable-next-line consistent-return
router.get('/revisions', async (req, res, next) => {
    const {orm} = req.app.locals;
    const size = req.query.size ? parseInt(req.query.size, 10) : 20;
    const from = req.query.from ? parseInt(req.query.from, 10) : 0;

    try {
        const orderedRevisions = await getOrderedRevisions(from, size, orm);
        res.send(orderedRevisions);
    }
    catch (err) {
        return next(err);
    }
});

export default router;