server.js

require('dotenv').config();
const jwt = require('jsonwebtoken');
const express = require('express');
const morgan = require('morgan');
const bodyParser = require('body-parser');
const mongoose = require('mongoose');
const cors = require('cors');
const db = mongoose.connection;
const port = process.env.PORT||6969;
const server = express();
const categoryRouter = require('./api/routes/categories');
const userRouter = require('./api/routes/users');
const adminsRouter = require('./api/routes/admins');
mongoose.connect(process.env.DATABASE_URL);             // connects to the database

//middleware
server.use(morgan('dev'));                              // logs requests to console
server.use(cors());
server.use(bodyParser.urlencoded({extended:false}));    // allows for simple url body parsing
server.use(bodyParser.json());                          // allows for simple JSON body parsing

// Generates original AUTH_KEY for other users on the server.


// routes
server.use('/categories',categoryRouter);               // routes video requests to corresponding router
server.use('/user',userRouter);                         // routes video requests to corresponding router
server.use('/admins',adminsRouter);                     // routes video requests to corresponding router

// error handling
server.use((req,res,next)=>{
    res.status(404).json({message:"That route does not exist."});   // defaults to the error code of the other method, and defaults to 500 if none was present. 
    console.error("That route does not exist.");  
});

// database error handling
db.on('error',(error)=>{console.error(error)});
server.listen(port);
db.once('open',()=>{
    console.log("---------------------------\nServer sucessfully connected to: "+process.env.DATABASE_URL+"\n-----------------------------");
    console.log("Server is listening on port: "+ port+"\n------------------------------");
    const payload = {
        username: 'JezzyServerAdmin',
        password: 'TotallySecureServerPassword'
    }
    const token = jwt.sign(payload, process.env.JWT_KEY);
    console.log("AUTH_TOKEN: "+token);
});