server.js

//___________________
//Dependencies
//___________________
const express = require("express");
const mongoose = require("mongoose");
const app = express();
const db = mongoose.connection;
require("dotenv").config();
const cors = require("cors");

app.use(express.json());
app.use(cors());

//___________________
//Port

const Posts = require("./models/post");
//___________________
// Allow use of Heroku's port or your own local port, depending on the environment
const PORT = process.env.PORT;

//___________________
//Database
//___________________
// How to connect to the database either via heroku or locally
const MONGODB_URI = process.env.MONGODB_URI;

// Connect to Mongo &
// Fix Depreciation Warnings from Mongoose
// May or may not need these depending on your Mongoose version
mongoose.connect(MONGODB_URI, () => {
  console.log("connected");
});

// Error / success
db.on("error", (err) => console.log(err.message + " is Mongod not running?"));
db.on("connected", () => console.log("mongo connected: ", MONGODB_URI));
db.on("disconnected", () => console.log("mongo disconnected"));

//___________________
//Middleware
//___________________

//use public folder for static assets
app.use(express.static("public"));

app.use(express.json()); // returns middleware that only parses JSON - may or may not need it depending on your project

//___________________
// Routes

app.post("/CityBook", (req, res) => {
  Posts.create(req.body, (err, CreatedPost) => {
    res.json(CreatedPost);
  });
});

app.get("/CityBook", (req, res) => {
  Posts.find({}, (err, foundPost) => {
    res.json(foundPost);
  });
});

app.delete("/CityBook/:id", (req, res) => {
  Posts.findByIdAndRemove(req.params.id, (err, deletedPost) => {
    res.json(deletedPost);
  });
});

app.put("/CityBook/:id", (req, res) => {
  Posts.findByIdAndUpdate(
    req.params.id,
    req.body,
    { new: true },
    (error, updatedPost) => {
      res.json(updatedPost);
    }
  );
});

//___________________
//localhost:3000

//___________________
//Listener debugging
//___________________
app.listen(4000, () => console.log("Listening on port:", PORT));