index.js

//jshint esversion:6

const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const querystring = require('querystring');
const app = express();
app.use(express.static('public'));
//q4QbxT9vVV5WW6DO
mongoose.connect("mongodb+srv://admin:q4QbxT9vVV5WW6DO@cluster0-hc4da.mongodb.net/SCISAT_Data", {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  useFindAndModify: false
});

testSchema = {
  name: String,
  description: String
};

pointSchema = {
  _id: Number,
  x: Number,
  y: Number
};

concentrationSchema = {
  _id: mongoose.Schema.ObjectId,
  occultation_name: [String],
  event_type: [String],
  date: [String],
  date_MJD2000: [String],
  latitude: [String],
  longitude: [String],
  beta_angle: [String],
  start_timetag: [String],
  end_timetag: [String],
  start_time: [String],
  end_time: [String],
  molecule_range: [String],
  molecule_name: [String],
  alt_conc: [[mongoose.Schema.Number]]
}

function insertTest(){
  for (let i = 0;i < 5000; i++ ){
    const point = new Point({
      _id: i,
      x : Math.floor( Math.random() * 50),
      y: Math.floor( Math.random() * 50)
    });
    point.save();
  }
}

const Test = mongoose.model("Test", testSchema);
const Point = mongoose.model("Point", pointSchema);
const Ozone = mongoose.model("TimePeriod", concentrationSchema, "TimePeriod");

app.use(bodyParser.urlencoded({
  extended: true
}));

app.route("/:paramName").get(function(req, res) {
  // insertTest();
  const path = req.params.paramName;
  console.log(path);
  res.sendFile(__dirname+"/public/index.html");

});

app.route("/api/:paramName")
  .get(function(req, res) {
    const queryObject = req.query;
    const q = queryObject.q;
    const collection = req.params.paramName;
    if (collection === "points") {
      Point.find({}, (err, foundItems) => {
        if(err){
          res.send(err);
        } else {
          res.send({Data:foundItems});
        }
      });
    } else if(collection==="tests") {
      console.log(q);
      Test.find({name: q}, (err, foundItems) => {
        if(err){
          res.send(err);
        } else {
          res.send(foundItems);
        }
      });
    } else if(collection === "Data" && q){
      Ozone.find({date:{$regex:q+".*"}}, (err, foundItems)=>{
        if (err){
          res.send(err);
        } else {
          //console.log(foundItems);
          res.send({Data:foundItems});
        }
      });
    }

  });

let port = process.env.PORT;
if (port == null || port == ""){
  port = 3000;
}


app.listen(port, function(){
  console.log("Server started on port "+port);
});