var ini = require('ini');
var fs = require('fs');
var common = require('../common');
const jwt = require("jsonwebtoken");
var upperCase = require('upper-case');
var atob = require('atob');
var logger = require('./logger');

exports.authenticateUser = (req, res, next) => {
  password = atob(req.body.password);
  if(+common.rtl_sso) {
    if (common.cookie === password) {
      const token = jwt.sign(
        { user: 'Custom_User', lndConfigPath: common.lnd_config_path, macaroonPath: common.macaroon_path },
        'default_secret_key'
      );
      res.status(200).json({ token: token });
    } else {
      res.status(401).json({
        message: "Login Failure!",
        error: "SSO Authentication Failed!"
      });
    }
  } else {
    const RTLConfFilePath = common.rtl_conf_file_path + '/RTL.conf';
    fs.readFile(RTLConfFilePath, 'utf8', function (err, data) {
      if (err) {
        logger.error('\r\nAuthenticate: 13: ' + JSON.stringify(Date.now()) + ': ERROR: RTL Config Reading Failed!');
        res.status(500).json({
          message: "RTL Config Reading Failed!",
          error: err
        });
      } else {
        if(upperCase(common.node_auth_type) === 'CUSTOM') {
          const rtlPass = ini.parse(data).Authentication.rtlPass;
          if (rtlPass === password) {
            var rpcUser = 'Custom_User';
            const token = jwt.sign(
              { user: rpcUser, lndConfigPath: common.lnd_config_path, macaroonPath: common.macaroon_path },
              'default_secret_key'
            );
            res.status(200).json({ token: token });
          } else {
            res.status(401).json({
              message: "Authentication Failed!",
              error: "Password Validation Failed!"
            });
          }
        } else {
          fs.readFile(common.lnd_config_path, 'utf8', function (err, data) {
            if (err) {
              logger.error('\r\nAuthenticate: 45: ' + JSON.stringify(Date.now()) + ': ERROR: RTL Config Reading Failed!');
              res.status(500).json({
                message: "LND Config Reading Failed!",
                error: err
              });
            } else {
              const jsonLNDConfig = ini.parse(data);
              if (undefined !== jsonLNDConfig.Bitcoind && undefined !== jsonLNDConfig.Bitcoind['bitcoind.rpcpass']) {
                if (jsonLNDConfig.Bitcoind['bitcoind.rpcpass'] === password) {
                  var rpcUser = (undefined !== jsonLNDConfig.Bitcoind['bitcoind.rpcuser']) ? jsonLNDConfig.Bitcoind['bitcoind.rpcuser'] : '';
                  const token = jwt.sign(
                    { user: rpcUser, lndConfigPath: common.lnd_config_path, macaroonPath: common.macaroon_path },
                    'default_secret_key'
                  );
                  res.status(200).json({ token: token });
                } else {
                  res.status(401).json({
                    message: "Authentication Failed!",
                    error: "Password Validation Failed!"
                  });
                }
              } else {
                res.status(401).json({
                  message: "Authentication Failed!",
                  error: "Password Not Found In LND Config!"
                });
              }
            }
          });
        }
      }
    })  
  }
};