server.js

import express from 'express'
import mongoose from 'mongoose'
import multer from 'multer'
import { v2 as cloudinary } from 'cloudinary';
import path from 'path'
import { config } from 'dotenv'


config({path:'.env'})
cloudinary.config({ 
        cloud_name: process.env.CLOU_NAME, 
        api_key: process.env.CLOU_API_KEY, 
        api_secret: process.env.CLOU_API_SECCRET
    });

const app=express()

const port=process.env.PORT

mongoose.connect(
    process.env.MONGO_URL,
    {
        dbName:'image_uploder',
    }
).then(()=>{console.log(`mongobd connected`)})
.catch((err)=>console.log(err))

//rendering ejs file
app.get('/',(req,res)=>{
    res.render('index.ejs',{url:null})
})

const storage=multer.diskStorage({
    //destination:'./public/uploads',
    filename:function(req,file,cd){
        const uniqueSuffix=Date.now()+path.extname(file.originalname)
        cd(null,file.fieldname+'-'+uniqueSuffix)
    },
})

const upload=multer({storage:storage})

const imageSchema=new mongoose.Schema({
    filename:String,
    public_id:String,
    img_url:String,
})

const File=mongoose.model("cloudinary",imageSchema)

app.post('/upload',upload.single('file'),async(req,res)=>{
    const file=req.file.path
    const cloudinaryRes=await cloudinary.uploader.upload(file,{
        folder:'img_uploader',
    })

    //save to database
    const db=await File.create({
        filename:file.originalname,
        public_id:cloudinaryRes.public_id,
        img_url:cloudinaryRes.secure_url,
    })

    res.render('index.ejs',{url:cloudinaryRes.secure_url})

    //res.json({message:'file uploaded successfully',cloudinaryRes})
})

app.listen(port,()=>{
    console.log(`port is running at ${port}`)    
})