server.js

// https://codequs.com/p/B108Pqbt/build-a-restful-api-with-node-js-and-mongodb/
// coverage test: "istanbul cover node_modules\mocha\bin\_mocha -- -R spec"
//hot deploy: nodemon ./server.js

var express = require("express");
var app = express();
var bodyParser = require("body-parser");
var mongoOp = require("./models/mongo");
var router = express.Router();

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ "extended": false }));

app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use("/scripts", express.static("./client/js"));
app.use("/css", express.static("./client/css"));
app.use("/images", express.static("./client/images"));
app.use("/public", express.static("./client/public"));

router.get("/", function (req, res) {
  //res.json({ "status": 200, "message": "Hello World" });
  res.render('index', { title: 'Express + JADE', content: 'Hello JADE, My name is tommyspot' });

});

router.route("/users")
  .get(function (req, res) {
    var response = {};
    mongoOp.find({}, function (err, data) {
      if (err) {
        response = { status: 404, message: "Error fetching data" };
      } else {
        response = { status: 200, data: data };
      }
      res.json(response);
      //res.render('users', response);
    });
  })
  .post(function (req, res) {
    var db = new mongoOp();
    var response = {};

    if(req.body.email === '' || req.body.password === ''){
      response = { status: 501, message: "Input fields must not empty" };
      res.json(response);
    } else {
    db.userEmail = req.body.email;
    db.userPassword = require('crypto').createHash('sha1').update(req.body.password).digest('base64');
    db.save(function (err, data) {
      if (err) {
        response = { status: 501, message: "Error adding data" };
      } else {
        response = { status: 200, data: data };
      }
      res.json(response);
    });
    }
  });

router.route("/users/:id")
  .get(function (req, res) {
    var response = {};
    mongoOp.findById(req.params.id, function (err, data) {
      if (err) {
        response = { status: 501, message: "Error fetching data" };
      } else {
        response = { status: 200, data: data };
      }
      res.json(response);
    });
  })
  .put(function (req, res) {
    var response = {};
    mongoOp.findById(req.params.id, function (err, data) {
      if (err) {
        response = { status: 501, message: "Error fetching data" };
      } else {
        if (req.body.email !== undefined) {
          data.userEmail = req.body.email;
        }
        if (req.body.password !== undefined) {
          data.userPassword = require('crypto').createHash('sha1').update(req.body.password).digest('base64');
        }
        data.save(function (err, data) {
          if (err) {
            response = { status: 501, message: "Error updating data" };
          } else {
            response = { status: 200, data: data };
          }
          res.json(response);
        })
      }
    });
  })
  .delete(function (req, res) {
    var response = {};
    mongoOp.findById(req.params.id, function (err, data) {
      if (err) {
        response = { status: 501, message: "Error fetching data" };
      } else {
        mongoOp.remove({ _id: req.params.id }, function (err) {
          if (err) {
            response = { status: 501, message: "Error deleting data" };
          } else {
            response = { status: 200, message: "Data associated with " + req.params.id + "is deleted" };
          }
          res.json(response);
        });
      }
    });
  })

app.use('/', router);

app.listen(process.env.PORT || 3000);
console.log("Listening to PORT 3000");