legacy-redirect.js

'use strict';

var restify = require('restify'),
    mongoose = require('mongoose'),
    config = require('./config.json'),
    Promise = require('bluebird'),
    version = require("./package.json").version;

mongoose.Promise = Promise;

if (typeof config !== 'object') {
    throw new Error('Server has not been configured yet. Please run bin/setup.');
}

var dburl = 'mongodb://' +
    config.mongodb.host + ':' +
    config.mongodb.port + '/' +
    config.mongodb.dbname;

mongoose.connect(dburl);
mongoose.model('Location', require('./models/location').Location);
mongoose.model('Region', require('./models/region').Region);

var server = restify.createServer({
    name: `Leerstandsmelder Legacy Redirect Server v${version}`,
    version: version
});
server.pre(restify.pre.userAgentConnection());
server.use(restify.fullResponse());
server.use(restify.gzipResponse());
server.use(restify.authorizationParser());

server.get('/:region_slug/places/:location_slug', function (req, res, next) {
    var redirect = config.redirect_server.redirect_host;
    return mongoose.model('Region').findOne({slug: req.params.region_slug})
        .then(function (region) {
            if (region) {
                redirect += '/' + (region.slug || region.uuid);
                return mongoose.model('Location').findOne({legacy_slug: req.params.location_slug});
            } else {
                throw new Error();
            }
        })
        .then(function (location) {
            if (location) {
                redirect += '/' + (location.slug || location.uuid);
                res.setHeader('Location', redirect);
                res.send(301);
                next();
            } else {
                throw new Error();
            }
        })
        .catch(function () {
            res.send(restify.NotFoundError());
            next();
        });
});

server.listen(config.redirect_server.port, config.redirect_server.host, function () {
    console.log(`${server.name} listening at ${server.url}`);
});