require("dotenv-safe").load();
var jwt = require('jsonwebtoken');

//#region Encript
function LTrim(x) {
  return x.replace(/^\s+/, "");
}

global.encriptPassword = function encriptPassword(password, amount = 10) {
  return Cript(RPad(password, amount), " ");
}

function RPad(St, Tm) {
  text = (LTrim(St) + "          ").substr(0, Tm);
  return text;
}

function Cript(St, Pw) {
  x = "";

  p = 0;

  for (i = 0; i < St.length; i++) {

      if (p > Pw.length) {
          p = 1;
      }
      j = ord(Pw.substr(p, 1)) + 128;
      n = ord(St.substr(i, 1));

      x = x + Again(n, j);
      p = 0;
  }

  return x;
}

function Again(n, j) {
  exitloop = false;

  while (exitloop == false) {

      n = n ^ j;

      if (n < 31) {
          n = 128 + n;
      } else if ((n > 127) && (n < 159)) {
          n = n - 128;
      } else {
          exitloop = true;
      }
  }
  return String.fromCharCode(n);
}

function ord(string) {
  var str = string + ''
  var code = str.charCodeAt(0)

  if (code >= 0xD800 && code <= 0xDBFF) {
      var hi = code
      if (str.length === 1) {
          return code
      }
      var low = str.charCodeAt(1)
      return ((hi - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000
  }
  if (code >= 0xDC00 && code <= 0xDFFF) {
      return code
  }
  return code
}
//#endregion

global.verifyJWT = function verifyJWT(req, res, next) {
  //console.log(req.headers.token);
  var token = decodeURI(req.headers.token);
  if(!token)
    token = req.params.tk || req.body.token;
  //console.log(token);
  //token = encriptPassword(token, token.length);
  //console.log(token);
  if (!token) return res.status(401).send({ auth: false, message: 'Não foi enviado token' });

  jwt.verify(token, process.env.SECRET, function (err, decoded) {
    if (err) {
      //console.log(err);
      res.status(200).send({ status: 'expired' });
    }
    else {
      req.idusers = decoded.id;
      next();
    }
  });
}

global.fixApostrofe = function fixApostrofe(content) {
  for (let i = 0; i < 20; i++) {
    content = content.replace("'", '&apos;');
  }
  return content;
}

global.fixAspas = function fixAspas(content) {
  for (let i = 0; i < 20; i++) {
    content = content.replace('"', '&quot;');
  }
  return content;
}

global.replaceAll = function ReplaceAll(Texto, Palavras, TrocarPor, Vezes) {
  for (let i = 0; i < Vezes; i++) {
      for (let o = 0; o < Palavras.length; o++) {
          Texto = Texto.replace(Palavras[o], TrocarPor[o]);
      }
  }
  return Texto;
}