import csv from 'csv-parser';
import formidable from "formidable";
import fs from "fs";
import sqlite3 from 'sqlite3';

export const config = {
  api: {
    bodyParser: false
  }
};

export default function handler(req,res) {

  const form = new formidable.IncomingForm();
  form.parse(req, async function (err, fields, files) {

    // console.log('ppp')
    console.log(files.file.filepath)
    const DB_NAME = 'data/appUser.db';
    const TABLE_NAME = 'user';
    
    // Open a connection to the SQLite database
    const db = new sqlite3.Database(DB_NAME);
    
    // fs.createReadStream('data/user.csv')
    fs.createReadStream(files.file.filepath)
    .pipe(csv())
    .on('data', (data) => {
      const values = Object.values(data);
      const placeholders = values.map(() => '?').join(',');
      const sql = `INSERT INTO ${TABLE_NAME} (${Object.keys(data).join(',')}) VALUES (${placeholders})`;
      db.run(sql, values, (err) => {
        if (err) {
          console.error(err);
        }
      });
    })
    .on('end', () => {
      console.log(`Data inserted successfully into table ${TABLE_NAME}`);
  
      fs.unlinkSync(files.file.filepath);
      db.close();
    });


    // console.log(fields)
    // await saveFile(files.file,fields.fName? fields.fName:files.file.originalFilename );
    return res.status(201).send("");
  });




  res.status(200).json({ msg: 'ok' })
}