Initial commit

.eslintrc.js

@@ -0,0 +1,9 @@
+module.exports = {
+  extends: 'airbnb-base',
+  plugins: [
+    'import'
+  ],
+  rules: {
+    'no-underscore-dangle': [ 'error', { allow: ['_id'] } ],
+  },
+};

.gitignore

@@ -0,0 +1,84 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/

gulpfile.js

@@ -0,0 +1,58 @@
+const {
+  parallel,
+  src,
+  watch,
+} = require('gulp');
+const cache = require('gulp-cached');
+const eslint = require('gulp-eslint');
+const log = require('fancy-log');
+const {
+  green,
+  magenta,
+  cyan,
+  red,
+  yellow,
+} = require('chalk');
+const { spawn } = require('child_process');
+
+let isFirstRun = true;
+let node;
+const server = async () => {
+  if (node) node.kill();
+  isFirstRun = false;
+  node = await spawn('node', ['src/index.js'], { stdio: ['inherit', 'inherit', 'inherit', 'ipc'] });
+  node.on('message', (msg) => {
+    if (msg.event === 'ready') {
+      log(`Server ${green('ready')} on ${yellow(msg.location)}`);
+    }
+  });
+  node.on('close', (code, signal) => {
+    const exited = [];
+    if (code) exited.push(`code ${magenta(code)}`);
+    if (signal) exited.push(`signal ${magenta(signal)}`);
+    log(`Process ${green('exited')} with ${exited.join(' ')}`);
+  });
+};
+
+const lintScripts = () => src(['src/**/*.js'])
+  .pipe(cache('lint'))
+  .pipe(eslint())
+  .pipe(eslint.format());
+
+
+const serve = () => {
+  const watcher = watch(
+    ['src/**/*.js'],
+    { queue: false, ignoreInitial: false },
+    parallel(lintScripts, server),
+  );
+  watcher.on('add', (path) => {
+    if (!isFirstRun) log(`File ${green(path)} was ${green('added')}`);
+  });
+  watcher.on('change', path => log(`File ${green(path)} was ${cyan('changed')}`));
+  watcher.on('unlink', path => log(`File ${green(path)} was ${red('removed')}.`));
+};
+
+exports.default = serve;
+exports.serve = serve;
+exports['lint:js'] = lintScripts;

package.json

@@ -0,0 +1,25 @@
+{
+  "name": "projector-button",
+  "version": "1.0.0",
+  "main": "src/index.js",
+  "license": "MIT",
+  "private": true,
+  "scripts": {
+    "dev": "node_modules/.bin/gulp"
+  },
+  "devDependencies": {
+    "chalk": "^2.4.2",
+    "eslint": "^5.16.0",
+    "eslint-config-airbnb-base": "^13.1.0",
+    "eslint-plugin-import": "^2.17.2",
+    "fancy-log": "^1.3.3",
+    "gulp": "^4.0.1",
+    "gulp-cached": "^1.1.1",
+    "gulp-eslint": "^5.0.0"
+  },
+  "dependencies": {
+    "envalid": "^5.0.0",
+    "express": "^4.16.4",
+    "node-fetch": "^2.3.0"
+  }
+}

src/app.js

@@ -0,0 +1,12 @@
+const express = require('express');
+const { USERNAME, PASSWORD } = require('./env');
+
+const app = express();
+
+const createAuth = () => Buffer.from(`${USERNAME}:${PASSWORD}`).toString('base64');
+
+app.get('/', (req, res) => {
+  res.json({ ping: 'pong', auth: createAuth() });
+});
+
+module.exports = app;

src/env.js

@@ -0,0 +1,17 @@
+const { makeValidator, cleanEnv } = require('envalid');
+
+const nonemptystr = makeValidator((v) => {
+  const err = new Error('Expected a non-empty string');
+  if (v === undefined || v === null || v === '') {
+    throw err;
+  }
+  const trimmed = String(v).trim();
+  if (!trimmed) throw err;
+  return trimmed;
+});
+
+module.exports = cleanEnv(process.env, {
+  USERNAME: nonemptystr({ desc: 'The projector username.' }),
+  PASSWORD: nonemptystr({ desc: 'The projector password.' }),
+  PROJECTOR_URI: nonemptystr({ desc: 'The projector URI.' }),
+});

src/index.js

@@ -0,0 +1,6 @@
+const app = require('./app');
+
+const port = process.env.PORT || 4999;
+app.listen(port, () => {
+  if (process.send) process.send({ event: 'ready', location: `http://0.0.0.0:${port}` });
+});