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postgres.js
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postgres.js
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const express = require('express');
const cors = require('cors');
const bodyParser = require('body-parser');
const { Client } = require('pg')
const path = require('path');
const multer = require('multer');
const app = express();
app.use(bodyParser.json());
app.use(cors());
const port = 5000;
const client = new Client({
host: "localhost",
user: "postgres",
port: 5432,
password: "postgres",
database: "postgres"
})
client.connect()
// auth
function createAccount(username , password, role){
const res = client.query('INSERT INTO auth (username, password, role) VALUES ($1, $2, $3)', [username, password, role], (err, res)=>{
if(err){
console.log(err.message);
}else{
console.log('Data insert successful');
}
})
}
function changePassword(username, password){
const res = client.query('UPDATE auth SET password = $1 WHERE username = $2', [password, username], (err, res)=>{
if(err){
console.log(err.message);
}else{
console.log('Data update successful');
}
})
}
// profile
function createProfile(username, name , description, website, location, image, role){
client.query('INSERT INTO profile (username, name, description, website, location, image, role) VALUES ($1, $2, $3, $4, $5, $6, $7)',
[username, name, description, website, location, image, role], (err, res)=>{
if(err){
console.log(err.message);
}else{
console.log('Data insert successful');
}
})
}
// product
const storageProduct = multer.diskStorage({
destination: path.join(__dirname, 'public/uploads/product'),
filename: (req, file, cb) => {
cb(null, file.originalname);
}
})
const storageProfile = multer.diskStorage({
destination: path.join(__dirname, 'public/uploads/profile'),
filename: (req, file, cb) => {
cb(null, file.originalname);
}
})
function addProduct(serialNumber, name , brand){
client.query('INSERT INTO product (serialNumber, name, brand) VALUES ($1, $2, $3)',
[serialNumber, name, brand], (err, res)=>{
if(err){
console.log(err.message);
}else{
console.log('Data insert successful');
}
})
}
// auth
app.get('/authAll', async (req, res)=>{
const data = await client.query('Select * from auth');
res.header('Access-Control-Allow-Credentials', true);
res.send(data.rows);
console.log("Data sent successfully");
});
app.post('/auth/:username/:password', async (req, res)=>{
const {username, password} = req.params;
const data = await client.query(`SELECT * FROM auth WHERE username = '${username}' AND password = '${password}'`);
res.send(data.rows);
console.log("Data sent successfully");
});
app.post('/addaccount', (req, res)=>{
const {username, password, role} = req.body;
createAccount(username, password, role);
res.send('Data inserted');
});
app.post('/changepsw', (req, res)=>{
const {username, password} = req.body;
changePassword(username, password);
res.send('Data updated');
});
// profile
app.get('/profileAll', async (req, res)=>{
const data = await client.query('Select * from profile');
res.header('Access-Control-Allow-Credentials', true);
res.send(data.rows);
console.log("Data sent successfully");
});
app.get('/profile/:username', async (req, res)=>{
const {username} = req.params;
const data = await client.query(`SELECT * FROM profile WHERE username = '${username}'`);
res.send(data.rows);
console.log("Data sent successfully");
});
app.post('/addprofile', (req, res)=>{
const {username, name, description, website, location, image, role} = req.body;
createProfile(username, name, description, website, location, image, role);
res.send('Data inserted');
});
// image
app.post('/upload/profile', (req, res)=>{
let upload = multer({ storage: storageProfile}).single('image');
upload(req, res, (err)=>{
if(!req.file){
return res.send('Please select an image to upload')
}else if (err instanceof multer.MulterError){
return res.send(err);
} else if (err) {
return res.send(err);
}
})
})
// product
app.post('/upload/product', (req, res)=>{
let upload = multer({ storage: storageProduct}).single('image');
upload(req, res, (err)=>{
if(!req.file){
return res.send('Please select an image to upload')
}else if (err instanceof multer.MulterError){
return res.send(err);
} else if (err) {
return res.send(err);
}
})
})
app.get('/file/profile/:fileName', function (req, res) {
const {fileName} = req.params;
const filePath = path.join(__dirname, 'public/uploads/profile', fileName);
res.sendFile(filePath);
});
app.get('/file/product/:fileName', function (req, res) {
const {fileName} = req.params;
const filePath = path.join(__dirname, 'public/uploads/product', fileName);
res.sendFile(filePath);
});
app.get('/product/serialNumber', async (req, res)=>{
const data = await client.query(`SELECT serialNumber FROM product`);
res.send(data.rows);
});
app.post('/addproduct', (req, res)=>{
const {serialNumber, name, brand} = req.body;
addProduct(serialNumber, name, brand);
res.send('Data inserted');
});
app.listen(port, ()=>{
console.log('Server is running on port 5000');
});