diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..ca51474
--- /dev/null
+++ b/.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"
+}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..27e8853
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,118 @@
+# Created by https://www.gitignore.io/api/node,vim,osx,macos,linux
+
+*node_modules
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.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
+
+# 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-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### OSX ###
+*.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
+
+
+### macOS ###
+# Icon must end with two \r
+# Thumbnails
+# Files that might appear in the root of a volume
+# Directories potentially created on remote AFP share
+
+
+### Linux ###
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# End of https://www.gitignore.io/api/node,vim,osx,macos,linux
+l
diff --git a/gulpfile.js b/gulpfile.js
new file mode 100644
index 0000000..6059bf9
--- /dev/null
+++ b/gulpfile.js
@@ -0,0 +1,27 @@
+'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', 'test']);
+});
+
+gulp.task('default', ['dev']);
diff --git a/lib/cors-middleware.js b/lib/cors-middleware.js
new file mode 100644
index 0000000..6661797
--- /dev/null
+++ b/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();
+};
diff --git a/lib/error-middleware.js b/lib/error-middleware.js
new file mode 100644
index 0000000..761f3d9
--- /dev/null
+++ b/lib/error-middleware.js
@@ -0,0 +1,21 @@
+'use strict';
+
+const createError = require('http-errors');
+const debug = require('debug')('blog: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();
+};
diff --git a/lib/storage.js b/lib/storage.js
new file mode 100644
index 0000000..23dd80b
--- /dev/null
+++ b/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')('blog: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)));
+}
diff --git a/model/blog.js b/model/blog.js
new file mode 100644
index 0000000..4e0d51a
--- /dev/null
+++ b/model/blog.js
@@ -0,0 +1,58 @@
+
+'use strict';
+
+const uuid = require('node-uuid');
+const createError = require('http-errors');
+const debug = require('debug')('blog:blog');
+const storage = require('../lib/storage.js');
+
+const Blog = module.exports = function(name, content) {
+  debug('blog constructor');
+
+  if (!name) throw createError(400, 'expected name');
+  if (!content) throw createError(400, 'expected content');
+
+  this.id = uuid.v1();
+  this.name = name;
+  this.content = content;
+};
+
+Blog.createBlog = function(_blog) {
+  debug('createBlog');
+
+  try {
+    let blog = new Blog(_blog.name, _blog.content);
+    return storage.createItem('blog', blog);
+  } catch (err) {
+    return Promise.reject(err);
+  }
+};
+
+Blog.fetchBlog = function(id) {
+  debug('fetchBlog');
+  return storage.fetchItem('blog', id);
+};
+
+Blog.updateBlog = function(id, _blog) {
+  debug('updateBlog');
+
+  return storage.fetchItem('blog', id)
+  .catch( err => Promise.reject(createError(404, err.message)))
+  .then( blog => {
+    for (var prop in blog) {
+      if (prop === 'id') continue;
+      if (_blog[prop]) blog[prop] = _blog[prop];
+    }
+    return storage.createItem('blog', blog);
+  });
+};
+
+Blog.deleteBlog = function(id) {
+  debug('deleteBlog');
+  return storage.deleteItem('blog', id);
+};
+
+Blog.fetchIDs = function() {
+  debug('fetchIDs');
+  return storage.availIDs('blog');
+};
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..37687d8
--- /dev/null
+++ b/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "12-express_middleware",
+  "version": "1.0.0",
+  "description": "![CF](https://camo.githubusercontent.com/70edab54bba80edb7493cad3135e9606781cbb6b/687474703a2f2f692e696d6775722e636f6d2f377635415363382e706e67) Lab 12: Single Resource Express API ===",
+  "main": "server.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "start": "DEBUG='blog*' node server.js",
+    "test": "DEBUG='blog*' ./node_modules/mocha/bin/mocha"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/sueanyv/12-express_middleware.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/sueanyv/12-express_middleware/issues"
+  },
+  "homepage": "https://github.com/sueanyv/12-express_middleware#readme",
+  "dependencies": {
+    "bluebird": "^3.4.7",
+    "body-parser": "^1.16.1",
+    "debug": "^2.6.1",
+    "express": "^4.14.1",
+    "http-errors": "^1.6.1",
+    "mkdirp": "^0.5.1",
+    "morgan": "^1.8.1",
+    "node-uuid": "^1.4.7"
+  },
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "mocha": "^3.2.0",
+    "superagent": "^3.5.0"
+  }
+}
diff --git a/route/blog-router.js b/route/blog-router.js
new file mode 100644
index 0000000..444cd02
--- /dev/null
+++ b/route/blog-router.js
@@ -0,0 +1,41 @@
+'use strict';
+
+const Router = require('express').Router;
+const jsonParser = require('body-parser').json();
+const debug = require('debug')('blog:blog-router');
+const Blog = require('../model/blog.js');
+const blogRouter = new Router();
+
+blogRouter.post('/api/blog', jsonParser, function(req, res, next) {
+  debug('POST: /api/blog');
+
+  Blog.createBlog(req.body)
+  .then( blog => res.json(blog))
+  .catch( err => next(err));
+});
+
+blogRouter.get('/api/blog/:id', function(req, res, next) {
+  debug('GET: /api/blog/:id');
+
+  Blog.fetchBlog(req.params.id)
+  .then( blog => res.json(blog))
+  .catch( err => next(err));
+});
+
+blogRouter.get('/api/blog', function(req, res, next) {
+  debug('GET: /api/blog')
+
+  Blog.fetchIDs()
+  .then( ids => res.json(ids))
+  .catch(next);
+});
+
+blogRouter.put('/api/blog', jsonParser, function(req, res, next) {
+  debug('PUT: /api/blog');
+
+  Blog.updateBlog(req.query.id, req.body)
+  .then( blog => res.json(blog))
+  .catch(next);
+});
+
+module.exports = blogRouter;
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..59249f6
--- /dev/null
+++ b/server.js
@@ -0,0 +1,22 @@
+'use strict';
+
+const morgan = require('morgan');
+const express = require('express');
+const createError = require('http-errors');
+const debug = require('debug')('blog:server');
+
+const blogRouter = require('./route/blog-router.js');
+const cors = require('./lib/cors-middleware.js');
+const errors = require('./lib/error-middleware.js');
+
+const PORT = process.env.PORT || 3000;
+const app = express();
+
+app.use(morgan('dev'));
+app.use(cors);
+app.use(blogRouter);
+app.use(errors);
+
+app.listen(PORT, () => {
+  console.log(`server up: ${PORT}`);
+});
diff --git a/test/blog-route-test.js b/test/blog-route-test.js
new file mode 100644
index 0000000..e17863e
--- /dev/null
+++ b/test/blog-route-test.js
@@ -0,0 +1,118 @@
+'use strict';
+
+const expect = require('chai').expect;
+const request = require('superagent');
+const Blog = require('../model/blog.js');
+const url = 'http://localhost:8000';
+
+require('../server.js');
+
+const exampleBlog = {
+  name: 'example name',
+  content: 'example content'
+};
+
+describe('Blog Routes', function() {
+
+  describe('GET: /api/blog', function() {
+    describe('with a valid id', function() {
+      before( done => {
+        Blog.createBlog(exampleBlog)
+        .then(blog => {
+          this.tempBlog = blog;
+          done();
+        })
+        .catch( err => done(err));
+      });
+
+      after( done => {
+        Blog.deleteBlog(this.tempBlog.id)
+        .then( ()=> done())
+        .catch( err => done(err));
+      });
+
+      it('should return a blog', done => {
+        request.get(`${url}/api/blog/${this.tempBlog.id}`)
+        .end((err, res) => {
+          if (err) return done(err);
+          expect(res.status).to.equal(200);
+          expect(res.body.id).to.equal(this.tempBlog.id);
+          expect(res.body.name).to.equal(this.tempBlog.name);
+          expect(res.body.content).to.equal(this.tempBlog.content);
+          done();
+        });
+      });
+
+      describe('with an invalid id', function() {
+        it('should respond with a 404 status code', done => {
+          request.get(`${url}/api/blog/123456789`)
+          .end((err, res) => {
+            expect(res.status).to.equal(404);
+            done();
+          });
+        });
+      });
+    });
+  });
+
+  describe('POST: /api/blog', function() {
+    describe('with a valid body', function() {
+      after( done => {
+        if (this.tempBlog) {
+          Blog.deleteBlog(this.tempBlog.id)
+          .then( ()=> done())
+          .catch( err => done(err));
+        }
+      });
+
+      it('should return a blog', done => {
+        request.post(`${url}/api/blog`)
+        .send(exampleBlog)
+        .end((err, res) => {
+          if (err) return done(err);
+          expect(res.status).to.equal(200);
+          expect(res.body.name).to.equal(exampleBlog.name);
+          expect(res.body.content).to.equal(exampleBlog.content);
+          this.tempBlog = res.body;
+          done();
+        });
+      });
+    });
+  });
+
+  describe('PUT: /api/blog', function() {
+    describe('with a valid id and body', function() {
+      before( done => {
+        Blog.createBlog(exampleBlog)
+        .then( blog => {
+          this.tempBlog = blog;
+          done();
+        })
+        .catch( err => done(err));
+      });
+
+      after( done => {
+        if (this.tempBlog) {
+          Blog.deleteBlog(this.tempBlog.id)
+          .then( ()=> done())
+          .catch(done);
+        }
+      });
+
+      it('should return a blog', done => {
+        let updateBlog = { name: 'new name', content: 'new content' };
+        request.put(`${url}/api/blog?id=${this.tempBlog.id}`)
+        .send(updateBlog)
+        .end((err, res) => {
+          if (err) return done(err);
+          expect(res.status).to.equal(200);
+          expect(res.body.id).to.equal(this.tempBlog.id);
+          for (var prop in updateBlog) {
+            expect(res.body[prop]).to.equal(updateBlog[prop])
+          }
+          done();
+        });
+      });
+    });
+  });
+});