var express = require("express");
var path = require("path");
var bodyParser = require("body-parser");
var mongodb = require("mongodb");
var mongoose = require("mongoose");
var User = require("./model-user");

var app = express();
app.use(express.static(__dirname + "/public"));
app.use(bodyParser.json());

// Generic error handler used by all endpoints.
app.use(function (err, req, res, next) {
  console.log("Handle error");
});

// Create a database variable outside of the database connection callback to reuse the connection pool in your app.
var db;

// Connect to the database before starting the application server.
mongoose.Promise = global.Promise;
mongoose.connect(process.env.MONGODB_URI, function (err, database) {
  if (err) {
    console.log(err);
    process.exit(1);
  }

  // Save database object from the callback for reuse.
  db = database;
  console.log("Database connection ready");

  // Initialize the app.
  var server = app.listen(process.env.PORT || 8080, function () {
    var port = server.address().port;
    console.log("App now running on port", port);
  });
});

app.post("/api/users", function(req, res, next) {
  var newUser = new User();
  newUser.firstName = req.body.firstName;
  newUser.lastName = req.body.lastName;
  newUser.email = req.body.email;
  newUser.password = req.body.password;
  newUser.save(function(err, newUser) {
    if (err) {
      console.log("MONGOOSE ERRROR");
      return next(err);
    } else {
      return res.status(201).json(newUser.toObject());
    }
  });
});