smart-tag/db/insertDB.js

const con = require('./connect')

function insertDB(barcode, shelving, level){
  con.con.connect(function(err) {
      if (err) throw err;
      console.log("Connected!");
      var sql = `IF EXISTS(SELECT * FROM vn.smartTag WHERE code='${barcode}') 
                  THEN 
                    UPDATE vn.smartTag 
                    SET shelvingFk = '${shelving}', level = ${level}
                    WHERE code='${barcode}';
                  ELSE 
                    INSERT 
                    INTO vn.smartTag (code, shelvingFk, level) 
                    VALUES ('${barcode}', '${shelving}', ${level});
                  END IF;`;
      con.con.query(sql, function (err, result) {
        if (err) throw err;
        console.log("1 record inserted");
      });
    });
}
exports.insertDB = insertDB;