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server.js
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server.js
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const express = require('express');
const app = express();
const bodyParser = require('body-parser');
const cors = require('cors');
const mongoose = require('mongoose');
const PORT = 4000;
app.use(cors());
app.use(bodyParser.json());
app.use(express.static("public"))
const uri = "mongodb+srv://PraveenElango:orbital2020@siaoon.xfqrw.mongodb.net/SiaoOn?retryWrites=true&w=majority"
mongoose.connect(uri, { useNewUrlParser: true });
const db = mongoose.connection;
db.once('open',
() => console.log("MongoDB database connection established successfully!"));
db.on('error', err => {
console.error('connection error:', err)
});
const Question = require('./models/questions');
function saveQuestion(question) {
return new Question(question).save();
}
app.get("/question/:id", function (req, res) {
let questionId = req.params.id;
Question.find({}, (err, qn) => {
if (err) {
console.log(err.response);
} else {
res.json(qn[questionId]);
}
})
});
app.listen(process.env.PORT || 3000, function () {
console.log("Server running on Port: " + PORT);
})
// let count = 0;
// qns.map(x => {
// saveQuestion(x).then(doc => {
// count++;
// console.log("count is " + count);
// }).catch(error => { console.error(error) });
// })
// Question.collection.drop();
// saveQuestion({
// question: "What is the time complexity of insertion in a linked list?",
// options: {
// optionA: "O(1)",
// optionB: "O(n)",
// optionC: "O(n^2)",
// optionD: "O(log n)"
// },
// correct_answer: "O(1)",
// topic: "linked-list"
// })
// .then(doc => { console.log(doc) })
// .catch(error => { console.error(error) });
// Question.deleteMany({}, err => {
// if (err) {
// console.log(err);
// }
// });
// Question.find({}, (err, qn) => {
// if (err) {
// console.log("finding");
// console.log(err)
// } else {
// console.log(qn)
// }
// });