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index.js
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index.js
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const express = require('express');
var bodyParser = require('body-parser');
var zip = require('express-zip');
const exphbs = require('express-handlebars');
const multer = require('multer');
const imagemin = require('imagemin');
const imageminMozjpeg = require('imagemin-mozjpeg');
const base64 = require('file-base64');
const app = express();
const path = require('path');
const fs = require('fs');
// Handlebars Middleware
app.engine('handlebars', exphbs({
defaultLayout: 'main'
}));
app.set('view engine', 'handlebars');
const storage = multer.diskStorage({
destination: './public/uploads/',
filename: function(req, file, cb){
cb(null,file.originalname + '-' + Date.now() + path.extname(file.originalname));
}
});
var upload = multer({
storage: storage,
limits:{fileSize: 20000000},
})
app.use(express.static(__dirname + '/public'));
// main Route
app.get('/', (req, res) => {
const img = this.img;
res.render('index', {
msg : ''
});
});
app.get('/upload', (req,res)=> {
res.redirect('/');
});
app.post('/upload',upload.array('myImage'),(req,res)=> {
if(req.body['quality'] < 0) req.body['quality'] = 0;
if(req.body['quality'] > 100) req.body['quality'] = 100;
(async () => {
const files = await imagemin(['public/uploads/*.jpg'], {
destination: 'build/images',
plugins: [
imageminMozjpeg({
quality : req.body['quality'] || 85
})
]
});
var zipImgs = []
req.files.forEach((img , index)=>{
zipImgs.push({path:'build/images/'+img.filename,name:'img'+index+'.jpg'})
})
res.zip(zipImgs,'compressed.zip',()=>{
req.files.forEach((img , index)=>{
fs.unlink('build/images/'+img.filename,(err)=> {
if(err) throw err;
});
fs.unlink('public/uploads/'+img.filename,(err)=> {
if(err) throw err;
})
})
});
//=> [{data: <Buffer 89 50 4e …>, destinationPath: 'build/images/foo.jpg'}, …]
})();
})
const port = process.env.PORT || 5000;
app.listen(port, () =>{
console.log(`Server started on port ${port}`);
});