lab 12 - Danny

.eslintrc

@@ -0,0 +1,21 @@
+{
+  "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

@@ -0,0 +1,102 @@
+
+# Created by https://www.gitignore.io/api/macos,node,vim,vim
+
+### 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*
+node_modules
+
+# 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
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# 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
+
+
+
+### Vim ###
+# swap
+[._]*.s[a-w][a-z]
+[._]s[a-w][a-z]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### Vim ###
+# swap
+# session
+# temporary
+# auto-generated tag files
+
+### project specific ###
+temp
+img/test.bmp

README.md

@@ -0,0 +1,84 @@
+# Express Single Resource API with middleware
+
+This express single resource API allows a user to make GET, PUT, and POST requests to the Artist object. The user can POST a new Artist name and genre, receive an id, and can get the Artist by that id.
+
+### Set-Up
+
+In your Terminal
+
+```sh
+$ git clone <repository url>
+$ cd 12-express_middleware
+$ npm i
+```
+This will install the proper dependencies. You should receive the following in your package.json file:
+
+```sh
+"dependencies": {
+  "bluebird": "^3.4.6",
+  "body-parser": "^1.15.2",
+  "chai": "^3.5.0",
+  "debug": "^2.4.5",
+  "express": "^4.14.0",
+  "http-errors": "^1.5.1",
+  "mocha": "^3.2.0",
+  "morgan": "^1.7.0",
+  "node-uuid": "^1.4.7",
+  "superagent": "^3.3.1"
+}
+```
+
+Run `node server.js`  or to start your server. Or run `npm run start` to include debug while starting your server. You will receive a response of 'server live on PORT: `<PORT>`'
+
+
+### Use
+
+Making a POST request
+* Run `http POST localhost:<PORT>/api/artist name='<name>' genre='<genre>'`
+* This will update the Artist object to show `name:` `genre:` and `id:`
+* You will also receive a status code of 200.
+
+Example:
+```sh
+HTTP/1.1 200 OK
+Access-Control-Allow-Headers: *
+Access-Control-Allow-Origin: *
+Connection: keep-alive
+Content-Length: 79
+Content-Type: application/json; charset=utf-8
+Date: Wed, 21 Dec 2016 01:42:55 GMT
+ETag: W/"4f-XrtcY5ELsfZ6vIlKoUtB+Q"
+X-Powered-By: Express
+
+{
+    "genre": "Punk",
+    "id": "cb000020-c71e-11e6-b55a-156f3ac3297a",
+    "name": "Blink-182"
+}
+```
+
+Making a GET request
+* Run `http localhost:<PORT>/api/artist?id=<id>`
+* You must copy and paste the id from the post request.
+* You will also receive a status code of 200.
+
+Example:
+```sh
+HTTP/1.1 200 OK
+Access-Control-Allow-Headers: *
+Access-Control-Allow-Origin: *
+Connection: keep-alive
+Content-Length: 40
+Content-Type: application/json; charset=utf-8
+Date: Wed, 21 Dec 2016 01:43:28 GMT
+ETag: W/"28-ivjiv1YIQTFvK7z9Yn5eIA"
+X-Powered-By: Express
+
+[
+    "cb000020-c71e-11e6-b55a-156f3ac3297a"
+]
+```
+
+* If you run `http localhost:<PORT>/api/artist` you should receive a 400 status code, and a message of 'bad request'
+
+* If you run `http POST localhost:<PORT>/api/artist` you should receive a 400 status code, and a message of 'bad request'

data/artist/cb000020-c71e-11e6-b55a-156f3ac3297a.json

@@ -0,0 +1 @@
+{"id":"cb000020-c71e-11e6-b55a-156f3ac3297a","name":"Blink-182","genre":"Punk"}

data/artist/ceb2b430-c7a8-11e6-8966-5197e7604b92.json

@@ -0,0 +1 @@
+{"id":"ceb2b430-c7a8-11e6-8966-5197e7604b92","name":"U2","genre":"easy listening"}

gulpfile.js

@@ -0,0 +1,23 @@
+'use strict';
+
+const gulp = require('gulp');
+const eslint = require('gulp-eslint');
+const mocha = require('gulp-mocha');
+
+gulp.task('test', function() {
+  gulp.src('./test/*-test.js', { read: false })
+  .pipe(mocha({ reporter: 'spec' }));
+});
+
+gulp.task('lint', function() {
+  return gulp.src(['**/*.js', '!node_modules'])
+  .pipe(eslint())
+  .pipe(eslint.format())
+  .pipe(eslint.failAfterError());
+});
+
+gulp.task('dev', function() {
+  gulp.watch(['**/*.js', '!node_modules'], ['lint', 'task']);
+});
+
+gulp.task('default', ['dev']);

lib/cors-middleware.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = function(req, res, next) {
+  res.append('Access-Control-Allow-Origin', '*');
+  res.append('Access-Control-Allow-Headers', '*');
+  next();
+};

lib/err-middleware.js

@@ -0,0 +1,21 @@
+'use strict';
+
+const createError = require('http-errors');
+const debug = require('debug')('artist:err-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

@@ -0,0 +1,54 @@
+'use strict';
+
+const Promise = require('bluebird');
+const fs = Promise.promisifyAll(require('fs'), {suffix: 'Prom'});
+const createError = require('http-errors');
+const debug = require('debug')('music-artists: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/music-artists.js

@@ -0,0 +1,61 @@
+'use strict';
+
+const uuid = require('node-uuid');
+const createError = require('http-errors');
+const debug = require('debug')('music-artists:music-artists');
+const storage = require('../lib/storage.js');
+
+const Artist = module.exports = function(name, genre) {
+  debug('artist constructor');
+
+  if(!name) throw createError(400, 'expected name');
+  if(!genre) throw createError(400, 'expected genre');
+
+  this.id = uuid.v1();
+  this.name = name;
+  this.genre = genre;
+
+};
+
+Artist.createArtist = function(_artist) {
+  debug('createArtist');
+
+  try {
+    let artist = new Artist(_artist.name, _artist.genre);
+    return storage.createItem('artist', artist);
+  } catch (err) {
+    return Promise.reject(createError(400, err.message));
+  }
+};
+
+Artist.fetchArtist = function(id) {
+  debug('fetchArtist');
+
+  return storage.fetchItem('artist', id);
+};
+
+Artist.updateArtist = function(id, _artist) {
+  debug('updateArtist');
+
+  return storage.fetchItem('artist', id)
+  .catch( err => Promise.reject(createError(404, err.message)))
+  .then( artist => {
+    for (var prop in artist) {
+      if (prop === 'id') continue;
+      if (_artist[prop]) artist[prop] = _artist[prop];
+    }
+    return storage.createItem('artist', artist);
+  });
+};
+
+Artist.deleteArtist = function(id) {
+  debug('deleteArtist');
+
+  return storage.deleteItem('artist', id);
+};
+
+Artist.fetchIDs = function() {
+  debug('fetchIDs');
+
+  return storage.availIDs('artist');
+};