finished the lab for today

.eslintrc

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+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

.gitignore

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+# Created by https://www.gitignore.io/api/osx,vim,node,macos,windows
+
+### macOS ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# 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 (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://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
+
+
+### OSX ###
+
+# Icon must end with two \r
+
+# Thumbnails
+
+# Files that might appear in the root of a volume
+
+# Directories potentially created on remote AFP share
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+ehthumbs.db
+ehthumbs_vista.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.gitignore.io/api/osx,vim,node,macos,windows

lib/cors-middleware.js

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+'use strict';
+
+module.exports = function(req, res, next) {
+  res.append('Access-Control-Allow-Origin', '*');
+  res.append('Access-Control-Allow-Headers', '*');
+  next();
+}

lib/error-middleware.js

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+'use strict';
+
+const createError = require('http-errors');
+const debug = require('debug')('superhero:error-middleware');
+
+module.exports = function(err, req, res, next) {
+  console.error(err.message);
+
+  if (err.status) {
+    debug('user error');
+
+    res.status(err.status).send(err.name);
+    next();
+    return;
+  }
+
+  debug('server error');
+  err = createError(500, err.message);
+  res.status(err.status).send(err.name);
+  next();
+};

lib/storage.js

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+'use strict';
+
+const Promise = require('bluebird');
+const fs = Promise.promisifyAll(require('fs'), {suffix: 'Prom'});
+const createError = require('http-errors');
+const debug = require('debug')('superhero:storage');
+
+module.exports = exports = {};
+
+exports.createItem = function(schemaName, item) {
+  debug('createItem');
+
+  if (!schemaName) return Promise.reject(createError(400, 'expected schema name'));
+  if (!item) return Promise.reject(createError(400, 'expected item'));
+
+  let json = JSON.stringify(item);
+  return fs.writeFileProm(`${__dirname}/../data/${schemaName}/${item.id}.json`, json)
+  .then( () => item)
+  .catch( err => Promise.reject(createError(500, err.message)));
+};
+
+exports.fetchItem = function(schemaName, id) {
+  debug('fetchItem');
+
+  if (!schemaName) return Promise.reject(createError(400, 'expected schema name'));
+  if (!id) return Promise.reject(createError(400, 'expected id'));
+
+  return fs.readFileProm(`${__dirname}/../data/${schemaName}/${id}.json`)
+  .then(data => {
+    try {
+      let item = JSON.parse(data.toString());
+      return item;
+    } catch (err) {
+      return Promise.reject(createError(500, err.message));
+    }
+  })
+  .catch(err => Promise.reject(createError(404, err.message)));
+};
+
+exports.deleteItem = function(schemaName, id) {
+  debug('deleteItem');
+
+  if (!schemaName) return Promise.reject(createError(400, 'expected schema name'));
+  if (!id) return Promise.reject(createError(400, 'expected id'));
+
+  return fs.unlinkProm(`${__dirname}/../data/${schemaName}/${id}.json`)
+  .catch( err => Promise.reject(createError(404, err.message)));
+};
+
+exports.availIDs = function(schemaName) {
+  return fs.readdirProm(`${__dirname}/../data/${schemaName}`)
+  .then( files => files.map(name => name.split('.json')[0]))
+  .catch( err => Promise.reject(createError(404, err.message)));
+};

model/superhero.js

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+'use strict';
+
+const uuidv4 = require('uuid/v4');
+const createError = require('http-errors');
+const debug = require('debug')('superhero:superhero');
+const storage = require('../lib/storage.js');
+
+const Superhero = module.exports = function(name, comicUni) {
+  debug('superhero constructor');
+
+  if (!name) throw new Error('expected name');
+  if (!comicUni) throw new Error('expected comicUni');
+
+  this.id = uuidv4();
+  this.name = name;
+  this.comicUni = comicUni;
+};
+
+Superhero.createSuperhero = function(_superhero) {
+  debug('createSuperhero');
+
+  try {
+    let superhero = new Superhero(_superhero.name, _superhero.comicUni);
+    return storage.createItem('superhero', superhero);
+  } catch (err) {
+    return Promise.reject(err);
+  }
+};
+
+Superhero.fetchSuperhero = function(id) {
+  debug('fetchSuperhero');
+  return storage.fetchItem('superhero', id);
+};
+
+Superhero.updateSuperhero = function(id, _superhero) {
+  debug('updateSuperhero');
+
+  return storage.fetchItem('superhero', id)
+  .catch( err => Promise.reject(createError(404, err.message)))
+  .then( superhero => {
+    for (var prop in superhero) {
+      if (prop === 'id') continue;
+      if (_superhero[prop]) superhero[prop] = _superhero[prop];
+    }
+    return storage.createItem('superhero', superhero);
+  });
+};
+
+Superhero.deleteSuperhero = function(id) {
+  debug('deleteSuperhero');
+  return storage.deleteItem('superhero', id);
+};
+
+Superhero.fetchIDs = function() {
+  debug('fetchIDs');
+  return storage.availIDs('superhero');
+};

package.json

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+{
+  "name": "12-express-middleware",
+  "version": "1.0.0",
+  "description": "![cf](https://i.imgur.com/7v5ASc8.png) 12: Express Middleware ======",
+  "main": "server.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "DEBUG='note*' ./node_modules/mocha/bin/mocha",
+    "start": "DEBUG='note*' node server.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/bretladenburg/12-express-middleware.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/bretladenburg/12-express-middleware/issues"
+  },
+  "homepage": "https://github.com/bretladenburg/12-express-middleware#readme",
+  "dependencies": {
+    "bluebird": "^3.5.0",
+    "body-parser": "^1.17.2",
+    "debug": "^2.6.8",
+    "express": "^4.15.3",
+    "http-errors": "^1.6.1",
+    "morgan": "^1.8.2",
+    "uuid": "^3.1.0"
+  },
+  "devDependencies": {
+    "chai": "^4.1.0",
+    "mocha": "^3.5.0",
+    "superagent": "^3.5.2"
+  }
+}

route/superhero-router.js

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+'use strict';
+
+const Router = require('express').Router;
+const jsonParser = require('body-parser').json();
+const debug = require('debug')('superhero:superhero-router');
+const Superhero = require('../model/superhero.js');
+const superheroRouter = new Router();
+
+superheroRouter.post('/api/superhero', jsonParser, function(req, res, next) {
+  debug('POST: /api/superhero');
+
+  Superhero.createSuperhero(req.body)
+  .then( superhero => res.json(superhero))
+  .catch( err => next(err));
+});
+
+superheroRouter.get('/api/superhero/:id', function(req, res, next) {
+  debug('GET: /api/superhero/:id');
+
+  Superhero.fetchSuperhero(req.params.id)
+  .then( superhero => res.json(superhero))
+  .catch( err => next(err));
+});
+
+superheroRouter.get('/api/superhero', function(req, res, next) {
+  debug('GET: /api/superhero');
+
+  Superhero.fetchIDs()
+  .then( ids => res.json(ids))
+  .catch( err => next(err));
+});
+
+superheroRouter.put('/api/superhero', jsonParser, function(req, res, next) {
+  debug('PUT: /api/superhero');
+
+  Superhero.updateSuperhero(req.query.id, req.body)
+  .then( superhero => res.json(superhero))
+  .catch( err => next(err));
+});
+
+module.exports = superheroRouter;