mevn-stack-assignment/backend/server.js

107 lines
2.6 KiB
JavaScript

const express = require('express');
const sqlite3 = require('sqlite3');
const cors = require('cors');
const app = express();
app.use(cors());
app.use(express.json());
function getDb() {
return new sqlite3.Database('db.sqlite', (err) => {
if (err) console.log('db error:', err);
console.log('Connected to database!');
});
}
const db = getDb();
db.run(
`CREATE TABLE IF NOT EXISTS appointments (
id INTEGER PRIMARY KEY,
date TEXT,
time TEXT,
name TEXT
)`,
(err) => {
console.log('Table creation error:', err);
}
);
db.close();
app.post('/api/appointments', (req, res) => {
const d = req.body;
console.log('data:', d);
const db = getDb();
db.run(
'INSERT INTO appointments (date, time, name) VALUES (?, ?, ?)',
[d.date, d.time, d.name],
function (err) {
if (err) {
console.log('error:', err);
res.status(500).json({ msg: 'error' });
} else {
db.all('SELECT * FROM appointments', [], (err, rows) => {
if (err) {
console.log('error:', err);
res.status(500).json({ msg: 'error' });
} else {
console.log('all data:', rows);
res.json({ msg: 'ok', data: rows });
}
db.close();
});
}
}
);
});
app.get('/api/slots', (req, res) => {
const db = getDb();
db.all('SELECT * FROM appointments', [], (err, rows) => {
let temp = [];
for (let i = 28; i <= 29; i++) {
for (let h = 13; h <= 17; h++) {
for (let m = 0; m < 60; m += 30) {
let d = `2024-02-${i}`;
let t = `${h}:${m === 0 ? '00' : m}`;
temp.push({ date: d, time: t });
}
}
}
for (let i = 1; i <= 3; i++) {
for (let h = 13; h <= 17; h++) {
for (let m = 0; m < 60; m += 30) {
let d = `2024-03-0${i}`;
let t = `${h}:${m === 0 ? '00' : m}`;
temp.push({ date: d, time: t });
}
}
}
let available = temp.filter((slot) => {
return !rows.some((r) => r.date === slot.date && r.time === slot.time);
});
console.log('available slots:', available);
res.json(available);
db.close();
});
});
app.get('/api/appointments', (req, res) => {
const db = getDb();
db.all('SELECT * FROM appointments', [], (err, rows) => {
if (err) {
console.log('error:', err);
res.status(500).json({ msg: 'error' });
} else {
console.log('all appointments:', rows);
res.json(rows);
}
db.close();
});
});
app.listen(3000, () => console.log('Server running at http://localhost:3000'));