var createError = require('http-errors');
const mongoose = require('mongoose');
var express = require('express');
var path = require('path');
bodyParser = require('body-parser');
var app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
port = process.env.PORT || 3500;
app.listen(port);
console.log('Server started on: ' + port);

app.get('/', (req, res) => {
    res.send('Hello World!')
})

app.get('/home', (req, res) => {
    res.send('Hello Home!')
})

main().catch(err => console.log(err));

async function main() {
    mongoose.connect('mongodb://localhost:27017/ekam').then(() => {
        console.log('mongodb connected');
    });
}

var conn = mongoose.connection;

conn.on('connected', function () {
    console.log('database is connected successfully');
});

conn.on('disconnected',function(){
    console.log('database is disconnected successfully');
});

conn.once('open', function () {
    console.log('connection open successfully');
});

// Add headers
app.use(function (req, res, next) {
    // Website you wish to allow to connect
    res.setHeader('Access-Control-Allow-Origin', '*');
    // Request methods you wish to allow
    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
    // Request headers you wish to allow
    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
    // Set to true if you need the website to include cookies in the requests sent
    // to the API (e.g. in case you use sessions)
    res.setHeader('Access-Control-Allow-Credentials', true);
    // Pass to next layer of middleware
    next();
});

app.get('/scheduleAppointmentAPI', (req, res) => {
    const collections = conn.db.collection("ahc");
    collections.find({}).toArray(function (err, data) {
        res.send(data);
    })
});