2018-09-30 14:50:09 -04:00
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/**
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* Server-side Express application
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* - API methods
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* - entry-point to shared React App
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*
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*/
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2018-09-09 17:22:44 -04:00
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import React from 'react';
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import { StaticRouter } from 'react-router-dom';
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import express from 'express';
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import { renderToString } from 'react-dom/server';
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import serialize from 'serialize-javascript';
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2018-09-13 14:54:16 -04:00
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import bodyParser from 'body-parser';
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import session from 'express-session';
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import pgConnect from 'connect-pg-simple';
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2018-09-09 17:22:44 -04:00
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import App from './frontend/app';
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2018-09-30 11:18:57 -04:00
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import db from './db';
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2018-10-20 07:20:10 -04:00
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import { authUser, createUser, getUserById, getNewUserAPIKey } from './user';
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2018-09-29 14:09:48 -04:00
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import { queryBuildingsAtPoint, queryBuildingsByReference, getBuildingById,
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saveBuilding } from './building';
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2018-09-10 05:44:32 -04:00
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import tileserver from './tileserver';
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2018-09-13 15:36:14 -04:00
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import { parseBuildingURL } from './parse';
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2018-09-09 17:22:44 -04:00
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// create server
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const server = express();
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// reference packed assets
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const assets = require(process.env.RAZZLE_ASSETS_MANIFEST);
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// disable header
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server.disable('x-powered-by');
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// serve static files
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server.use(express.static(process.env.RAZZLE_PUBLIC_DIR));
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// parse POSTed json body
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server.use(bodyParser.json());
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// handle user sessions
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2018-09-13 14:54:16 -04:00
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const pgSession = pgConnect(session);
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2018-09-09 17:22:44 -04:00
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const sess = {
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2018-09-29 14:09:48 -04:00
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name: 'cl.session',
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store: new pgSession({
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2018-09-30 11:18:57 -04:00
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pgPromise: db,
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2018-09-29 14:09:48 -04:00
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tableName : 'user_sessions'
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}),
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secret: process.env.APP_COOKIE_SECRET,
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saveUninitialized: false,
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resave: false,
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cookie: { maxAge: 30 * 24 * 60 * 60 * 1000 } // 30 days
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2018-09-09 17:22:44 -04:00
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};
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if (server.get('env') === 'production') {
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2018-09-29 14:09:48 -04:00
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// trust first proxy
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server.set('trust proxy', 1)
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// serve secure cookies
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sess.cookie.secure = true
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2018-09-09 17:22:44 -04:00
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}
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server.use(session(sess));
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// handle HTML routes (server-side rendered React)
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server.get('/*.html', frontendRoute);
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server.get('/', frontendRoute);
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function frontendRoute(req, res) {
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const context = {};
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const data = {};
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2018-09-13 15:41:42 -04:00
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context.status = 200;
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2018-09-10 18:32:56 -04:00
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2018-09-11 18:30:17 -04:00
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const building_id = parseBuildingURL(req.url);
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2018-09-13 15:41:42 -04:00
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if (isNaN(building_id)){
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context.status = 404;
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}
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const is_building = (typeof(building_id) !== "undefined")
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2018-09-11 18:30:17 -04:00
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Promise.all([
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req.session.user_id? getUserById(req.session.user_id) : undefined,
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is_building? getBuildingById(building_id) : undefined
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2018-09-11 18:30:17 -04:00
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]).then(function(values){
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const user = values[0];
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const building = values[1];
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if (is_building && typeof(building) === "undefined"){
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context.status = 404
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}
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data.user = user;
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data.building = building;
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renderHTML(context, data, req, res)
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2018-09-30 16:53:41 -04:00
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}).catch(error => {
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console.error(error);
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data.user = undefined;
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data.building = undefined;
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context.status = 500;
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renderHTML(context, data, req, res);
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});
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2018-09-11 18:30:17 -04:00
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}
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2018-09-10 18:32:56 -04:00
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2018-09-13 15:41:42 -04:00
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function renderHTML(context, data, req, res){
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2018-09-09 17:22:44 -04:00
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const markup = renderToString(
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2018-09-29 14:09:48 -04:00
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<StaticRouter context={context} location={req.url}>
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<App user={data.user} building={data.building} />
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</StaticRouter>
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2018-09-09 17:22:44 -04:00
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);
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if (context.url) {
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2018-09-29 14:09:48 -04:00
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res.redirect(context.url);
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2018-09-09 17:22:44 -04:00
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} else {
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2018-09-29 14:09:48 -04:00
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res.status(context.status).send(
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`<!doctype html>
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2018-09-09 17:22:44 -04:00
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<html lang="">
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<head>
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<meta http-equiv="X-UA-Compatible" content="IE=edge" />
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<meta charset="utf-8" />
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<title>Colouring London</title>
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<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
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<style>
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@font-face {
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font-family: 'glacial_cl';
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src: url('/fonts/glacialindifference-regular-webfont.woff2') format('woff2'),
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url('/fonts/glacialindifference-regular-webfont.woff') format('woff');
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font-weight: normal;
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font-style: normal;
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}
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</style>
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${
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assets.client.css
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? `<link rel="stylesheet" href="${assets.client.css}">`
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: ''
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}
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${
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process.env.NODE_ENV === 'production'
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? `<script src="${assets.client.js}" defer></script>`
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: `<script src="${assets.client.js}" defer crossorigin></script>`
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}
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</head>
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<body>
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<div id="root">${markup}</div>
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<script>
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window.__PRELOADED_STATE__ = ${serialize(data)}
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</script>
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</body>
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</html>`
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2018-09-29 14:09:48 -04:00
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);
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2018-09-09 17:22:44 -04:00
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}
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}
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2018-09-10 05:44:32 -04:00
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// GET tiles
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server.use('/tiles', tileserver);
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2018-09-29 14:09:48 -04:00
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// GET buildings
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// not implemented - may be useful to GET all buildings, paginated
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2018-09-09 17:22:44 -04:00
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2018-09-29 14:09:48 -04:00
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// GET buildings at point
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server.get('/buildings/locate', function(req, res){
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const { lng, lat } = req.query;
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queryBuildingsAtPoint(lng, lat).then(function(result){
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res.send(result);
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}).catch(function(error){
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console.error(error);
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res.send({error:'Database error'})
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})
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});
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// GET buildings by reference (UPRN/TOID or other identifier)
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server.get('/buildings/reference', function(req, res){
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const { key, id } = req.query;
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queryBuildingsByReference(key, id).then(function(result){
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res.send(result);
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}).catch(function(error){
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console.error(error);
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res.send({error:'Database error'})
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})
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});
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// GET individual building, POST building updates
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server.route('/building/:building_id.json')
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.get(function (req, res) {
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const { building_id } = req.params;
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getBuildingById(building_id).then(function(result){
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if (result && result.length) {
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res.send(result)
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} else {
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res.status(404).send({error:'Not Found'})
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}
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}).catch(function(error){
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console.error(error);
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2018-09-11 18:30:17 -04:00
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res.send({error:'Database error'})
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})
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})
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.post(function (req, res) {
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2018-09-30 17:30:00 -04:00
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if (!req.session.user_id) {
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res.send({error: 'Must be logged in'});
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return
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}
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const user_id = req.session.user_id;
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2018-09-11 18:30:17 -04:00
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const { building_id } = req.params;
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const building = req.body;
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saveBuilding(building_id, building, user_id).then(building => {
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if (building.error) {
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res.send(building)
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return
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}
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if (typeof(building) === "undefined") {
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res.send({error:'Database error'})
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return
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}
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res.send(building)
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}).catch(
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2018-09-11 18:30:17 -04:00
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() => res.send({error:'Database error'})
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)
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})
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2018-09-09 17:22:44 -04:00
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// POST new user
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server.post('/users', function(req, res){
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const user = req.body;
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if (req.session.user_id) {
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res.send({error: 'Already signed in'});
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2018-09-13 11:58:05 -04:00
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return
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2018-09-09 17:22:44 -04:00
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}
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if (user.email){
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if (user.email != user.confirm_email) {
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2018-09-29 14:09:48 -04:00
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res.send({error: "Email did not match confirmation."});
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return
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2018-09-09 17:22:44 -04:00
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}
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} else {
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user.email = null;
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}
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createUser(user).then(function(result){
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if (result.user_id) {
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req.session.user_id = result.user_id;
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res.send({user_id: result.user_id});
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} else {
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req.session.user_id = undefined;
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res.send({error: result.error});
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}
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}).catch(function(err){
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console.error(err);
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res.send(err)
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});
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});
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// POST user auth
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server.post('/login', function(req, res){
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authUser(req.body.username, req.body.password).then(function(user) {
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if (user.user_id) {
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req.session.user_id = user.user_id;
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} else {
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req.session.user_id = undefined;
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}
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res.send(user);
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}).catch(function(error){
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res.send(error);
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})
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});
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// POST user logout
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server.post('/logout', function(req, res){
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req.session.user_id = undefined;
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req.session.destroy(function(err){
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if (err) {
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console.error(err);
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res.send({error: 'Failed to end session'})
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}
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res.send({success: true});
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});
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});
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// GET own user info
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server.get('/users/me', function(req, res){
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if (!req.session.user_id) {
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res.send({error: 'Must be logged in'});
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return
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}
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getUserById(req.session.user_id).then(function(user){
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res.send(user);
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}).catch(function(error){
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res.send(error);
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});
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});
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2018-10-20 07:20:10 -04:00
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// POST generate API key
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server.post('/api/key', function(req, res){
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if (!req.session.user_id) {
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res.send({error: 'Must be logged in'});
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return
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}
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getNewUserAPIKey(req.session.user_id).then(function(api_key){
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res.send(api_key);
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}).catch(function(error){
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res.send(error);
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});
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})
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2018-09-09 17:22:44 -04:00
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export default server;
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